CMakeLists.txt

@@ -1,7 +1,8 @@
 ################################################################################
-## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com  ##
-##                                                                            ##
 ## Project for working with OpenGL and Qt6 widgets                            ##
+##                                                                            ##
+## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com  ##
+## All Content (c) 2023 Shaun Reed, all rights reserved                       ##
 ################################################################################
 cmake_minimum_required(VERSION 3.23)
 

src/CMakeLists.txt

@@ -1,7 +1,8 @@
 ################################################################################
-## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com  ##
-##                                                                            ##
 ## Project for working with OpenGL and Qt6 widgets                            ##
+##                                                                            ##
+## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com  ##
+## All Content (c) 2023 Shaun Reed, all rights reserved                       ##
 ################################################################################
 
 # Qtk Library

src/app/CMakeLists.txt

@@ -1,7 +1,8 @@
 ################################################################################
-## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com  ##
-##                                                                            ##
 ## Project for working with OpenGL and Qt6 widgets                            ##
+##                                                                            ##
+## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com  ##
+## All Content (c) 2023 Shaun Reed, all rights reserved                       ##
 ################################################################################
 
 ################################################################################

src/app/debugconsole.cpp

@@ -1,7 +1,7 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
-## About: MainWindow for creating an example Qt application                   ##
+## About: Debug console for qtk views                                         ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
 ##############################################################################*/
@@ -29,16 +29,5 @@ DebugConsole::DebugConsole(
   auto qtkWidget = dynamic_cast<QtkWidget *>(owner);
   if(qtkWidget) {
     connect(qtkWidget, &QtkWidget::sendLog, this, &DebugConsole::sendLog);
-    sendLog(
-        "Debug console (" + name + ") attached to QtkWidget: '"
-        + qtkWidget->objectName() + "'");
-    sendLog("Test\nLogging\t\n\tStuff", Status);
-    sendLog("Test\nLogging\t\n\tStuff", Debug);
-    sendLog("Test\nLogging\t\n\tStuff", Warn);
-    sendLog("Test\nLogging\t\n\tStuff", Error);
-    sendLog(
-        "Test\nLogging\t\n\tStuff that is really long and will wrap around but "
-        "it might not you don't know until you try",
-        Fatal);
   }
 }

src/app/debugconsole.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Debug console for qtk views                                         ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -77,6 +77,10 @@ namespace Qtk {
       }
 
     private:
+      /**
+       * @param context Log context severity level.
+       * @return QColor corresponding with the message context.
+       */
       [[nodiscard]] QColor logColor(const DebugContext & context) const {
         switch(context) {
           case Status:
@@ -94,6 +98,13 @@ namespace Qtk {
         }
       }
 
+      /**
+       * Prefixes a log message to add context level.
+       *
+       * @param message The message to prefix.
+       * @param context The log context severity level.
+       * @return The log message prefixed with the DebugContext level.
+       */
       [[nodiscard]] QString logPrefix(
           QString & message, const DebugContext & context) {
         QString prefix;
@@ -121,8 +132,8 @@ namespace Qtk {
         return message;
       }
 
-      QTextEdit * mConsole;
       Ui::DebugConsole * ui_;
+      QTextEdit * mConsole;
   };
 }  // namespace Qtk
 

src/app/examplescene.cpp

@@ -1,15 +1,11 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
-## About: Classes for managing objects and data within a scene                ##
+## About: Example Qtk scene                                                   ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
 ##############################################################################*/
 
-#include <qtk/meshrenderer.h>
-#include <qtk/model.h>
-#include <qtk/texture.h>
-
 #include "examplescene.h"
 #include "resources.h"
 

src/app/examplescene.h

@@ -1,7 +1,7 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
-## About: Classes for managing objects and data within a scene                ##
+## About: Example Qtk scene                                                   ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
 ##############################################################################*/
@@ -9,11 +9,7 @@
 #ifndef QTK_EXAMPLE_SCENE_H
 #define QTK_EXAMPLE_SCENE_H
 
-#include <QMatrix4x4>
-
-#include <qtk/camera3d.h>
 #include <qtk/scene.h>
-#include <qtk/skybox.h>
 
 /**
  * Example scene using QtkWidget to render 3D models and simple geometry within
@@ -40,6 +36,7 @@ class ExampleScene : public Qtk::Scene {
      **************************************************************************/
 
     ExampleScene();
+
     ~ExampleScene();
 
     /***************************************************************************
@@ -50,6 +47,7 @@ class ExampleScene : public Qtk::Scene {
      * Initialize objects within the scene
      */
     void init() override;
+
     /**
      * Called when OpenGL repaints the widget.
      */

src/app/main.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Main program for practice using Qt6 widgets and OpenGL              ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##

src/app/qtkmainwindow.cpp

@@ -1,19 +1,21 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: MainWindow for Qtk application                                      ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
 ##############################################################################*/
 
-#include <qtk/qtkapi.h>
-
 #include "examplescene.h"
 #include "qtkmainwindow.h"
 #include "ui_qtkmainwindow.h"
 
 MainWindow * MainWindow::mainWindow_ = Q_NULLPTR;
 
+/*******************************************************************************
+ * Constructors / Destructors
+ ******************************************************************************/
+
 MainWindow::MainWindow(QWidget * parent) : QMainWindow(parent) {
   ui_ = new Ui::MainWindow;
   setObjectName("MainWindow");
@@ -47,6 +49,25 @@ MainWindow::~MainWindow() {
   delete ui_;
 }
 
+/*******************************************************************************
+ * Public Methods
+ ******************************************************************************/
+
+MainWindow * MainWindow::getMainWindow() {
+  if(mainWindow_ == Q_NULLPTR) {
+    mainWindow_ = new MainWindow;
+  }
+  return mainWindow_;
+}
+
+Qtk::QtkWidget * MainWindow::getQtkWidget(const QString & name) {
+  if(!views_.count(name)) {
+    return Q_NULLPTR;
+  }
+  return views_[name];
+}
+
 void MainWindow::refreshScene(QString sceneName) {
+  // TODO: Select TreeView using sceneName>
   ui_->qtk__TreeView->updateView(getQtkWidget(sceneName)->getScene());
 }

src/app/qtkmainwindow.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: MainWindow for Qtk application                                      ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -40,22 +40,18 @@ class MainWindow : public QMainWindow {
      * @param parent The parent for this QMainWindow
      */
     explicit MainWindow(QWidget * parent = nullptr);
+
     ~MainWindow() override;
 
     /***************************************************************************
-     * Public Static Methods
+     * Public Methods
      **************************************************************************/
 
     /**
      * Allows widgets to retrieve an instance of this root QMainWindow.
      * @return this
      */
-    inline static MainWindow * getMainWindow() {
+    static MainWindow * getMainWindow();
-      if(mainWindow_ == Q_NULLPTR) {
-        mainWindow_ = new MainWindow;
-      }
-      return mainWindow_;
-    }
 
     /**
      * Accessor for retrieving a QtkWidget by it's objectName.
@@ -64,22 +60,23 @@ class MainWindow : public QMainWindow {
      * @param name The objectName associated with the QtkWidget.
      * @return Pointer to an active QtkWidget or Q_NULLPTR is not found.
      */
-    inline Qtk::QtkWidget * getQtkWidget(const QString & name) {
+    Qtk::QtkWidget * getQtkWidget(const QString & name);
-      if(!views_.count(name)) {
-        return Q_NULLPTR;
-      }
-      return views_[name];
-    }
 
   public slots:
+    /**
+     * Trigger a refresh for widgets related to a scene that has been updated.
+     * @param sceneName The name of the scene that has been modified.
+     */
     void refreshScene(QString sceneName);
 
   private:
-    MainWindow(const MainWindow &) {};
     /***************************************************************************
      * Private Members
      **************************************************************************/
 
+    /** Do not allow copying */
+    MainWindow(const MainWindow &) {};
+
     Ui::MainWindow * ui_ {};
     static MainWindow * mainWindow_;
 

src/app/qtkwidget.cpp

@@ -1,7 +1,7 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
-## About: Main window for Qt6 OpenGL widget application                       ##
+## About: QtkWidget for Qt desktop application                                ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
 ##############################################################################*/
@@ -9,9 +9,9 @@
 #include <QKeyEvent>
 #include <QVBoxLayout>
 
-#include "qtk/input.h"
+#include <qtk/input.h>
-#include "qtk/mesh.h"
+#include <qtk/scene.h>
-#include "qtk/scene.h"
+#include <qtk/shape.h>
 
 #include "debugconsole.h"
 #include "qtkmainwindow.h"
@@ -23,12 +23,15 @@ using namespace Qtk;
  * Constructors, Destructors
  ******************************************************************************/
 
+QtkWidget::QtkWidget(QWidget * parent) :
+    QtkWidget(parent, "QtkWidget") {}
+
 QtkWidget::QtkWidget(QWidget * parent, const QString & name) :
     QtkWidget(parent, name, Q_NULLPTR) {}
 
 QtkWidget::QtkWidget(QWidget * parent, const QString & name, Scene * scene) :
     QOpenGLWidget(parent), mDebugLogger(Q_NULLPTR),
-    mConsole(new DebugConsole(this, name)) {
+    mConsole(new DebugConsole(this, name)), mScene(Q_NULLPTR) {
   setScene(scene);
   setObjectName(name);
   QSurfaceFormat format;
@@ -65,10 +68,6 @@ QAction * QtkWidget::getActionToggleConsole() {
   return action;
 }
 
-/*******************************************************************************
- * Public Inherited Virtual Methods
- ******************************************************************************/
-
 void QtkWidget::initializeGL() {
   initializeOpenGLFunctions();
   // Connect the frameSwapped signal to call the update() function
@@ -113,10 +112,58 @@ void QtkWidget::paintGL() {
   }
 }
 
+void QtkWidget::setScene(Qtk::Scene * scene) {
+  delete mScene;
+  mScene = scene;
+  if(mScene != Q_NULLPTR) {
+    mConsole->setTitle(mScene->getSceneName());
+  } else {
+    mConsole->setTitle("Null Scene");
+  }
+}
+
+void QtkWidget::toggleConsole() {
+  if(mConsoleActive) {
+    mConsole->setHidden(true);
+    mConsoleActive = false;
+  } else {
+    MainWindow::getMainWindow()->addDockWidget(
+        Qt::DockWidgetArea::BottomDockWidgetArea,
+        dynamic_cast<QDockWidget *>(mConsole));
+    mConsole->setHidden(false);
+    mConsoleActive = true;
+  }
+}
+
 /*******************************************************************************
- * Protected Slots
+ * Protected Methods
  ******************************************************************************/
 
+void QtkWidget::keyPressEvent(QKeyEvent * event) {
+  if(event->isAutoRepeat()) {
+    // Do not repeat input while a key is held down
+    event->ignore();
+  } else {
+    Input::registerKeyPress(event->key());
+  }
+}
+
+void QtkWidget::keyReleaseEvent(QKeyEvent * event) {
+  if(event->isAutoRepeat()) {
+    event->ignore();
+  } else {
+    Input::registerKeyRelease(event->key());
+  }
+}
+
+void QtkWidget::mousePressEvent(QMouseEvent * event) {
+  Input::registerMousePress(event->button());
+}
+
+void QtkWidget::mouseReleaseEvent(QMouseEvent * event) {
+  Input::registerMouseRelease(event->button());
+}
+
 void QtkWidget::update() {
   updateCameraInput();
 
@@ -195,39 +242,49 @@ void QtkWidget::messageLogged(const QOpenGLDebugMessage & msg) {
   sendLog("(OpenGL) " + error.replace("\n", "\n(OpenGL) "), context);
 }
 
-/*******************************************************************************
- * Protected Methods
- ******************************************************************************/
-
-void QtkWidget::keyPressEvent(QKeyEvent * event) {
-  if(event->isAutoRepeat()) {
-    // Do not repeat input while a key is held down
-    event->ignore();
-  } else {
-    Input::registerKeyPress(event->key());
-  }
-}
-
-void QtkWidget::keyReleaseEvent(QKeyEvent * event) {
-  if(event->isAutoRepeat()) {
-    event->ignore();
-  } else {
-    Input::registerKeyRelease(event->key());
-  }
-}
-
-void QtkWidget::mousePressEvent(QMouseEvent * event) {
-  Input::registerMousePress(event->button());
-}
-
-void QtkWidget::mouseReleaseEvent(QMouseEvent * event) {
-  Input::registerMouseRelease(event->button());
-}
-
 /*******************************************************************************
  * Private Methods
  ******************************************************************************/
 
+void QtkWidget::teardownGL() { /* Nothing to teardown yet... */ }
+
+void QtkWidget::updateCameraInput() {
+  Input::update();
+  // Camera Transformation
+  if(Input::buttonPressed(Qt::RightButton)) {
+    static const float transSpeed = 0.1f;
+    static const float rotSpeed = 0.5f;
+
+    // Handle rotations
+    Scene::getCamera().getTransform().rotate(
+        -rotSpeed * Input::mouseDelta().x(), Camera3D::LocalUp);
+    Scene::getCamera().getTransform().rotate(
+        -rotSpeed * Input::mouseDelta().y(), Scene::getCamera().getRight());
+
+    // Handle translations
+    QVector3D translation;
+    if(Input::keyPressed(Qt::Key_W)) {
+      translation += Scene::getCamera().getForward();
+    }
+    if(Input::keyPressed(Qt::Key_S)) {
+      translation -= Scene::getCamera().getForward();
+    }
+    if(Input::keyPressed(Qt::Key_A)) {
+      translation -= Scene::getCamera().getRight();
+    }
+    if(Input::keyPressed(Qt::Key_D)) {
+      translation += Scene::getCamera().getRight();
+    }
+    if(Input::keyPressed(Qt::Key_Q)) {
+      translation -= Scene::getCamera().getUp() / 2.0f;
+    }
+    if(Input::keyPressed(Qt::Key_E)) {
+      translation += Scene::getCamera().getUp() / 2.0f;
+    }
+    Scene::getCamera().getTransform().translate(transSpeed * translation);
+  }
+}
+
 void QtkWidget::printContextInformation() {
   QString glType;
   QString glVersion;
@@ -260,63 +317,3 @@ void QtkWidget::printContextInformation() {
   qDebug() << qPrintable(message);
   sendLog("(OpenGL) " + message.replace("\n", "\n(OpenGL) "), Status);
 }
-
-void QtkWidget::updateCameraInput() {
-  Input::update();
-  // Camera Transformation
-  if(Input::buttonPressed(Qt::RightButton)) {
-    static const float transSpeed = 0.1f;
-    static const float rotSpeed = 0.5f;
-
-    // Handle rotations
-    Scene::getCamera().getTransform().rotate(
-        -rotSpeed * Input::mouseDelta().x(), Camera3D::LocalUp);
-    Scene::getCamera().getTransform().rotate(
-        -rotSpeed * Input::mouseDelta().y(), Scene::getCamera().right());
-
-    // Handle translations
-    QVector3D translation;
-    if(Input::keyPressed(Qt::Key_W)) {
-      translation += Scene::getCamera().forward();
-    }
-    if(Input::keyPressed(Qt::Key_S)) {
-      translation -= Scene::getCamera().forward();
-    }
-    if(Input::keyPressed(Qt::Key_A)) {
-      translation -= Scene::getCamera().right();
-    }
-    if(Input::keyPressed(Qt::Key_D)) {
-      translation += Scene::getCamera().right();
-    }
-    if(Input::keyPressed(Qt::Key_Q)) {
-      translation -= Scene::getCamera().up() / 2.0f;
-    }
-    if(Input::keyPressed(Qt::Key_E)) {
-      translation += Scene::getCamera().up() / 2.0f;
-    }
-    Scene::getCamera().getTransform().translate(transSpeed * translation);
-  }
-}
-
-void QtkWidget::toggleConsole() {
-  if(mConsoleActive) {
-    mConsole->setHidden(true);
-    mConsoleActive = false;
-  } else {
-    MainWindow::getMainWindow()->addDockWidget(
-        Qt::DockWidgetArea::BottomDockWidgetArea,
-        dynamic_cast<QDockWidget *>(mConsole));
-    mConsole->setHidden(false);
-    mConsoleActive = true;
-  }
-}
-
-void QtkWidget::setScene(Qtk::Scene * scene) {
-  delete mScene;
-  mScene = scene;
-  if(mScene != Q_NULLPTR) {
-    mConsole->setTitle(mScene->getSceneName());
-  } else {
-    mConsole->setTitle("Null Scene");
-  }
-}

src/app/qtkwidget.h

@@ -1,7 +1,7 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
-## About: Main window for Qt6 OpenGL widget application                       ##
+## About: QtkWidget for Qt desktop application                                ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
 ##############################################################################*/
@@ -17,8 +17,8 @@
 #include <QOpenGLWidget>
 #include <QPlainTextEdit>
 
-#include "qtk/qtkapi.h"
+#include <qtk/qtkapi.h>
-#include "qtk/scene.h"
+#include <qtk/scene.h>
 
 namespace Qtk {
   class DebugConsole;
@@ -42,8 +42,7 @@ namespace Qtk {
        *
        * @param parent Pointer to a parent widget for this QtkWidget or nullptr.
        */
-      explicit QtkWidget(QWidget * parent = nullptr) :
+      explicit QtkWidget(QWidget * parent = nullptr);
-          QtkWidget(parent, "QtkWidget") {}
 
       /**
        * Default construct a QtkWidget.
@@ -62,26 +61,18 @@ namespace Qtk {
        */
       QtkWidget(QWidget * parent, const QString & name, Qtk::Scene * scene);
 
-      ~QtkWidget() override;
+      ~QtkWidget();
+
       /*************************************************************************
        * Public Methods
        ************************************************************************/
+
+      /**
+       * Constructs a QAction to hide / show this DebugConsole.
+       * @return QAction to toggle visibility of this DebugConsole.
+       */
       QAction * getActionToggleConsole();
 
-    private:
-      /*************************************************************************
-       * Private Methods
-       ************************************************************************/
-
-      // clang-format off
-    void teardownGL() { /* Nothing to teardown yet... */ }
-      // clang-format on
-
-    public:
-      /*************************************************************************
-       * Public Inherited Virtual Methods
-       ************************************************************************/
-
       /**
        * Called when the widget is first constructed.
        */
@@ -104,24 +95,61 @@ namespace Qtk {
        * Accessors
        ************************************************************************/
 
+      /**
+       * @return The active scene being viewed in this widget.
+       */
       inline Qtk::Scene * getScene() { return mScene; }
 
       /*************************************************************************
        * Setters
        ************************************************************************/
 
+      /**
+       * @param scene The new scene to view.
+       */
       void setScene(Qtk::Scene * scene);
+
     public slots:
+
       /**
        * Toggle visibility of the DebugConsole associated with this QtkWidget.
        */
       void toggleConsole();
 
-    protected slots:
+    signals:
+      /**
+       * Log a message to the DebugConsole associated with this widget.
+       * @param message The message to log.
+       * @param context The context of the log message.
+       */
+      void sendLog(const QString & message, DebugContext context = Status);
+
+    protected:
       /*************************************************************************
-       * Qt Slots
+       * Protected Methods
        ************************************************************************/
 
+      /**
+       * @param event Key press event to update camera input manager.
+       */
+      void keyPressEvent(QKeyEvent * event) override;
+
+      /**
+       * @param event Key release event to update camera input manager.
+       */
+      void keyReleaseEvent(QKeyEvent * event) override;
+
+      /**
+       * @param event Mouse button press event to update camera input manager.
+       */
+      void mousePressEvent(QMouseEvent * event) override;
+
+      /**
+       * @param event Mouse button release event to update camera input manager.
+       */
+      void mouseReleaseEvent(QMouseEvent * event) override;
+
+    protected slots:
       /**
        * Called when the `frameSwapped` signal is caught.
        * See definition of initializeGL()
@@ -137,39 +165,39 @@ namespace Qtk {
        */
       void messageLogged(const QOpenGLDebugMessage & msg);
 #endif
-    public:
-    signals:
-      void sendLog(
-          const QString & message, Qtk::DebugContext context = Qtk::Status);
-
-    protected:
-      /*************************************************************************
-       * Protected Methods
-       ************************************************************************/
-
-      void keyPressEvent(QKeyEvent * event) override;
-      void keyReleaseEvent(QKeyEvent * event) override;
-      void mousePressEvent(QMouseEvent * event) override;
-      void mouseReleaseEvent(QMouseEvent * event) override;
 
     private:
       /*************************************************************************
        * Private Methods
        ************************************************************************/
 
+      /**
+       * Deconstruct any resources we have allocated for this widget.
+       */
+      void teardownGL();
+
+      /**
+       * Callback function to update input for camera controls
+       */
       static void updateCameraInput();
 
 #ifdef QTK_DEBUG
+      /**
+       * Prints OpenGL context information at start of debug session.
+       */
       void printContextInformation();
-      QOpenGLDebugLogger * mDebugLogger;
 #endif
+
       /*************************************************************************
        * Private Members
        ************************************************************************/
 
-      bool mConsoleActive = false;
+#ifdef QTK_DEBUG
+      QOpenGLDebugLogger * mDebugLogger;
+#endif
       Qtk::Scene * mScene;
       Qtk::DebugConsole * mConsole;
+      bool mConsoleActive = false;
   };
 }  // namespace Qtk
 

src/app/toolbox.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Toolbox plugin for object details and options                       ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##

src/app/toolbox.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Toolbox plugin for object details and options                       ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -22,10 +22,20 @@ namespace Qtk {
       Q_OBJECT
 
     public:
+      /*************************************************************************
+      * Contructors / Destructors
+      *************************************************************************/
+
       explicit ToolBox(QWidget * parent = nullptr);
+
       ~ToolBox();
 
     private:
+
+      /*************************************************************************
+       * Private Members
+       ************************************************************************/
+
       Ui::ToolBox * ui;
   };
 }  // namespace Qtk

src/app/treeview.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: TreeView plugin for scene hierarchy                                 ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -28,8 +28,9 @@ Qtk::TreeView::~TreeView() {
 }
 
 /*******************************************************************************
- * Public Members
+ * Public Methods
  ******************************************************************************/
+
 void Qtk::TreeView::updateView(const Qtk::Scene * scene) {
   ui->treeWidget->clear();
   ui->treeWidget->setColumnCount(1);
@@ -48,9 +49,9 @@ void Qtk::TreeView::itemFocus(QTreeWidgetItem * item, int column) {
   auto & transform = scene->getCamera().getTransform();
   auto object = scene->getObject(name);
   Transform3D * objectTransform;
-  if(object->getType() == Object::MESH) {
+  if(object->getType() == Object::QTK_MESH) {
     objectTransform = &dynamic_cast<MeshRenderer *>(object)->getTransform();
-  } else if(object->getType() == Object::MODEL) {
+  } else if(object->getType() == Object::QTK_MODEL) {
     objectTransform = &dynamic_cast<Model *>(object)->getTransform();
   }
   transform.setTranslation(objectTransform->getTranslation());

src/app/treeview.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: TreeView plugin for scene hierarchy                                 ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -26,10 +26,18 @@ namespace Qtk {
       Q_OBJECT
 
     public:
+      /*************************************************************************
+       * Constructors / Destructors
+       ************************************************************************/
+
       explicit TreeView(QWidget * parent = nullptr);
 
       ~TreeView();
 
+      /*************************************************************************
+       * Public Methods
+       ************************************************************************/
+
       /**
        * Updates the QTreeWidget with all objects within the scene.
        * @param scene The scene to load objects from.
@@ -48,6 +56,10 @@ namespace Qtk {
       void itemFocus(QTreeWidgetItem * item, int column);
 
     private:
+      /*************************************************************************
+       * Private Members
+       ************************************************************************/
+
       Ui::TreeView * ui;
 
       /**

src/app/widgetplugin.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Generic Qt Designer widget plugin                                   ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -11,10 +11,14 @@
 #include <QtPlugin>
 #include <utility>
 
-#include "qtk/qtkapi.h"
+#include <qtk/qtkapi.h>
 
 #include "widgetplugin.h"
 
+/*******************************************************************************
+ * Constructors, Destructors
+ ******************************************************************************/
+
 WidgetPlugin::WidgetPlugin(
     QString group, QString class_name, QString include,
     WidgetPlugin::Factory factory) :
@@ -22,21 +26,11 @@ WidgetPlugin::WidgetPlugin(
     m_className(std::move(class_name)), m_includeFile(std::move(include)),
     m_factory(std::move(factory)), m_objectName(class_name) {}
 
-QString WidgetPlugin::toolTip() const {
+WidgetPlugin::WidgetPlugin(QObject * parent) : QObject(parent) {}
-  return QStringLiteral("A custom widget tool tip.");
-}
 
-QString WidgetPlugin::whatsThis() const {
+/*******************************************************************************
-  return QStringLiteral("Custom widget what's this?");
+ * Public Methods
-}
+ ******************************************************************************/
-
-QIcon WidgetPlugin::icon() const {
-  return Qtk::getIcon();
-}
-
-bool WidgetPlugin::isContainer() const {
-  return true;
-}
 
 QString WidgetPlugin::group() const {
   return m_group;
@@ -54,6 +48,22 @@ QWidget * WidgetPlugin::createWidget(QWidget * parent) {
   return m_factory(parent);
 }
 
+QString WidgetPlugin::toolTip() const {
+  return QStringLiteral("A custom widget tool tip.");
+}
+
+QString WidgetPlugin::whatsThis() const {
+  return QStringLiteral("Custom widget what's this?");
+}
+
+QIcon WidgetPlugin::icon() const {
+  return Qtk::getIcon();
+}
+
+bool WidgetPlugin::isContainer() const {
+  return true;
+}
+
 bool WidgetPlugin::isInitialized() const {
   return m_initialized;
 }

src/app/widgetplugin.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Generic Qt Designer widget plugin                                   ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -22,14 +22,21 @@ class QDESIGNER_WIDGET_EXPORT WidgetPlugin :
     using Factory = std::function<QWidget *(QWidget *)>;
 
   public:
+    /***************************************************************************
+     * Contructors / Destructors
+     **************************************************************************/
+
     WidgetPlugin(
         QString group, QString class_name, QString include, Factory factory);
 
-    explicit WidgetPlugin(QObject * parent = nullptr) : QObject(parent) {}
+    explicit WidgetPlugin(QObject * parent = nullptr);
 
     ~WidgetPlugin() = default;
 
-  public:
+    /***************************************************************************
+     * Public Methods
+     **************************************************************************/
+
     /**
      * @return The name of the group to which this widget belongs.
      */
@@ -56,7 +63,7 @@ class QDESIGNER_WIDGET_EXPORT WidgetPlugin :
      * @param parent Parent widget to the new instance of this widget.
      * @return A new instance of this custom widget.
      */
-    QWidget * createWidget(QWidget * parent) override;
+    [[nodiscard]] QWidget * createWidget(QWidget * parent) override;
 
     /**
      * @return Short description used in Qt Designer tool tips.
@@ -102,8 +109,11 @@ class QDESIGNER_WIDGET_EXPORT WidgetPlugin :
     [[nodiscard]] QString domXml() const override;
 
   private:
-    bool m_initialized = false;
+    /***************************************************************************
+     * Private Members
+     **************************************************************************/
 
+    bool m_initialized = false;
     QString m_group;
     QString m_className;
     QString m_objectName;

src/app/widgetplugincollection.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Collection of widget plugins for Qt Designer                        ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -14,6 +14,10 @@
 #include "treeview.h"
 #include "widgetplugin.h"
 
+/*******************************************************************************
+ * Constructors, Destructors
+ ******************************************************************************/
+
 WidgetPluginCollection::WidgetPluginCollection(QObject * parent) :
     QObject(parent), m_collectionName("Qtk Widget Collection") {
   m_collection = {
@@ -28,6 +32,11 @@ WidgetPluginCollection::WidgetPluginCollection(QObject * parent) :
           [](QWidget * parent) { return new Qtk::ToolBox(parent); }),
   };
 }
+
+/*******************************************************************************
+ * Public Methods
+ ******************************************************************************/
+
 QList<QDesignerCustomWidgetInterface *> WidgetPluginCollection::customWidgets()
     const {
   return m_collection;

src/app/widgetplugincollection.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Collection of widget plugins for Qt Designer                        ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -17,16 +17,32 @@ class WidgetPluginCollection :
     public QDesignerCustomWidgetCollectionInterface {
     Q_OBJECT
     // Since we're exporting a collection, this is the only plugin metadata
-    // needed.
+    // needed. We don't need this for-each widget in the collection.
     Q_PLUGIN_METADATA(IID "com.Klips.WidgetPluginCollection")
     // Tell Qt Object system that we're implementing an interface.
     Q_INTERFACES(QDesignerCustomWidgetCollectionInterface)
 
   public:
+    /***************************************************************************
+     * Contructors / Destructors
+     **************************************************************************/
+
     explicit WidgetPluginCollection(QObject * parent = nullptr);
+
+    /***************************************************************************
+     * Public Methods
+     **************************************************************************/
+
+    /**
+     * @return QList of all custom widgets pointers.
+     */
     [[nodiscard]] QList<QDesignerCustomWidgetInterface *> customWidgets() const;
 
   private:
+    /***************************************************************************
+     * Private Members
+     **************************************************************************/
+
     QList<QDesignerCustomWidgetInterface *> m_collection;
     QString m_collectionName;
 };

src/qtk/CMakeLists.txt

@@ -1,7 +1,8 @@
 ################################################################################
-## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com  ##
-##                                                                            ##
 ## Project for working with OpenGL and Qt6 widgets                            ##
+##                                                                            ##
+## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com  ##
+## All Content (c) 2023 Shaun Reed, all rights reserved                       ##
 ################################################################################
 
 # TODO: Provide option for linking MainWindow with plugin statically
@@ -16,9 +17,10 @@
 set(PUBLIC_HEADERS
     camera3d.h
     input.h
-    mesh.h
+    shape.h
     meshrenderer.h
     model.h
+    modelmesh.h
     object.h
     qtkapi.h
     scene.h
@@ -30,9 +32,10 @@ set(PUBLIC_HEADERS
 set(SOURCE_FILES
     camera3d.cpp
     input.cpp
-    mesh.cpp
+    shape.cpp
     meshrenderer.cpp
     model.cpp
+    modelmesh.cpp
     object.cpp
     scene.cpp
     skybox.cpp

src/qtk/camera3d.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Fly camera class from tutorials followed at trentreed.net           ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com	| URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -10,15 +10,18 @@
 
 using namespace Qtk;
 
+/*******************************************************************************
+ * Static Public Constants
+ ******************************************************************************/
+
 const QVector3D Camera3D::LocalForward(0.0f, 0.0f, -1.0f);
 const QVector3D Camera3D::LocalUp(0.0f, 1.0f, 0.0f);
 const QVector3D Camera3D::LocalRight(1.0f, 0.0f, 0.0f);
 
 /*******************************************************************************
- * Accessors
+ * Public Methods
  ******************************************************************************/
 
-// Produces worldToView matrix
 const QMatrix4x4 & Camera3D::toMatrix() {
   mWorld.setToIdentity();
   // Qt6 renamed QMatrix4x4::conjugate() to conjugated()

src/qtk/camera3d.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Fly camera class from tutorials followed at trentreed.net           ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com	| URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -18,7 +18,7 @@ namespace Qtk {
   class QTKAPI Camera3D {
     public:
       /*************************************************************************
-       * Constants
+       * Static Public Constants
        ************************************************************************/
 
       static const QVector3D LocalForward;
@@ -29,39 +29,56 @@ namespace Qtk {
        * Accessors
        ************************************************************************/
 
+      /**
+       * @return Transform3D associated with this camera.
+       */
       inline Transform3D & getTransform() { return mTransform; }
 
+      /**
+       * @return Current translation of the camera as a QVector3D.
+       */
       [[nodiscard]] inline const QVector3D & getTranslation() const {
         return mTransform.getTranslation();
       }
 
+      /**
+       * @return Current rotation of this camera as a QQuaternion.
+       */
       [[nodiscard]] inline const QQuaternion & getRotation() const {
         return mTransform.getRotation();
       }
 
-      const QMatrix4x4 & toMatrix();
+      /**
-
+       * @return QVector3D for the forward vector of the camera.
-      // Queries
+       */
-      [[nodiscard]] inline QVector3D forward() const {
+      [[nodiscard]] inline QVector3D getForward() const {
         return mTransform.getRotation().rotatedVector(LocalForward);
       }
 
-      [[nodiscard]] inline QVector3D right() const {
+      /**
+       * @return QVector3D for the right vector of the camera.
+       */
+      [[nodiscard]] inline QVector3D getRight() const {
         return mTransform.getRotation().rotatedVector(LocalRight);
       }
 
-      [[nodiscard]] inline QVector3D up() const {
+      /**
+       * @return QVector3D for the up vector of the camera.
+       */
+      [[nodiscard]] inline QVector3D getUp() const {
         return mTransform.getRotation().rotatedVector(LocalUp);
       }
 
-    private:
       /*************************************************************************
-       * Private Members
+       * Public Methods
        ************************************************************************/
 
-      Transform3D mTransform;
+      /**
-      QMatrix4x4 mWorld;
+       * @return World To View matrix for this camera.
+       */
+      const QMatrix4x4 & toMatrix();
 
+    private:
       /*************************************************************************
        * Private Methods
        ************************************************************************/
@@ -70,6 +87,13 @@ namespace Qtk {
       friend QDataStream & operator<<(QDataStream & out, Camera3D & transform);
       friend QDataStream & operator>>(QDataStream & in, Camera3D & transform);
 #endif
+
+      /*************************************************************************
+       * Private Members
+       ************************************************************************/
+
+      Transform3D mTransform;
+      QMatrix4x4 mWorld;
   };
 
 // Qt Streams

src/qtk/input.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Input class from tutorials followed at trentreed.net                ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com	| URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -18,6 +18,13 @@ using namespace Qtk;
 /*******************************************************************************
  * Static Helper Structs
  ******************************************************************************/
+
+ /**
+  * Struct to hold key input state. When a key is pressed we construct this and
+  * store it within a KeyContainer (or ButtonContainer for mouse buttons).
+  *
+  * @tparam T Qt::Key or Qt::MouseButton input type for this instance.
+  */
 template <typename T> struct InputInstance : std::pair<T, Input::InputState> {
     typedef std::pair<T, Input::InputState> base_class;
 
@@ -28,6 +35,7 @@ template <typename T> struct InputInstance : std::pair<T, Input::InputState> {
     inline InputInstance(T value, Input::InputState state) :
         base_class(value, state) {}
 
+    // Allows use of std::find to search for a key's InputInstance
     inline bool operator==(const InputInstance & rhs) const {
       return this->first == rhs.first;
     }
@@ -53,14 +61,44 @@ static QPoint sg_mouseDelta;
  * Static Inline Helper Functions
  ******************************************************************************/
 
+/**
+ * Search for the InputInstance of a key.
+ *
+ * @param value The key to search for.
+ * @return Iterator to the found element or the end iterator if not found.
+ */
 static inline KeyContainer::iterator FindKey(Qt::Key value) {
   return std::find(sg_keyInstances.begin(), sg_keyInstances.end(), value);
 }
 
+/**
+ * Search for the InputInstance of a mouse button.
+ *
+ * @param value The mouse button to search for.
+ * @return Iterator to the found element or the end iterator if not found.
+ */
 static inline ButtonContainer::iterator FindButton(Qt::MouseButton value) {
   return std::find(sg_buttonInstances.begin(), sg_buttonInstances.end(), value);
 }
 
+/**
+ * Check an InputInstance for the InputReleased state.
+ *
+ * @tparam TPair KeyInstance or ButtonInstance
+ * @param instance Instance to check for InputReleased state.
+ * @return True if the InputInstance is in the released state.
+ */
+template <typename TPair>
+static inline bool CheckReleased(const TPair & instance) {
+  return instance.second == Input::InputReleased;
+}
+
+/**
+ * Updates an InputInstance and applies transitions if needed.
+ *
+ * @tparam TPair KeyInstance or ButtonInstance.
+ * @param instance The InputInstance to update.
+ */
 template <typename TPair> static inline void UpdateStates(TPair & instance) {
   switch(instance.second) {
     case Input::InputRegistered:
@@ -77,11 +115,12 @@ template <typename TPair> static inline void UpdateStates(TPair & instance) {
   }
 }
 
-template <typename TPair>
+/**
-static inline bool CheckReleased(const TPair & instance) {
+ * Updates InputInstance containers to track input state.
-  return instance.second == Input::InputReleased;
+ *
-}
+ * @tparam Container The type of container, KeyContainer or ButtonContainer.
-
+ * @param container The InputInstance container to update.
+ */
 template <typename Container> static inline void Update(Container & container) {
   typedef typename Container::iterator Iter;
   typedef typename Container::value_type TPair;
@@ -96,27 +135,9 @@ template <typename Container> static inline void Update(Container & container) {
 }
 
 /*******************************************************************************
- * Input Implementation
+ * Static Public Methods
  ******************************************************************************/
 
-Input::InputState Input::keyState(Qt::Key k) {
-  auto it = FindKey(k);
-  return (it != sg_keyInstances.end()) ? it->second : InputInvalid;
-}
-
-Input::InputState Input::buttonState(Qt::MouseButton k) {
-  auto it = FindButton(k);
-  return (it != sg_buttonInstances.end()) ? it->second : InputInvalid;
-}
-
-QPoint Input::mousePosition() {
-  return QCursor::pos();
-}
-
-QPoint Input::mouseDelta() {
-  return sg_mouseDelta;
-}
-
 void Input::update() {
   // Update Mouse Delta
   sg_mousePrevPosition = sg_mouseCurrPosition;
@@ -160,3 +181,21 @@ void Input::reset() {
   sg_keyInstances.clear();
   sg_buttonInstances.clear();
 }
+
+Input::InputState Input::keyState(Qt::Key k) {
+  auto it = FindKey(k);
+  return (it != sg_keyInstances.end()) ? it->second : InputInvalid;
+}
+
+Input::InputState Input::buttonState(Qt::MouseButton k) {
+  auto it = FindButton(k);
+  return (it != sg_buttonInstances.end()) ? it->second : InputInvalid;
+}
+
+QPoint Input::mousePosition() {
+  return QCursor::pos();
+}
+
+QPoint Input::mouseDelta() {
+  return sg_mouseDelta;
+}

src/qtk/input.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Input class from tutorials followed at trentreed.net                ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com	| URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -22,60 +22,133 @@ namespace Qtk {
        ************************************************************************/
 
       /**
-       * Possible key states
+       * Possible key states. See UpdateStates for state transitions.
+       *
+       * When a key is pressed we enter states Registered->Triggered->Pressed.
+       * InputTriggered state will be met only once if a key is pressed or held.
+       * While a key is held down the state is InputPressed.
+       *
+       * When a key is released we enter InputUnregistered->InputReleased
+       * When an active InputInstance for a key has this state it is removed.
        */
       enum InputState {
         InputInvalid,
-        InputRegistered,
+        InputRegistered,    // Initial state. Transitions to InputTriggered
-        InputUnregistered,
+        InputUnregistered,  // Transition to InputReleased
-        InputTriggered,
+        InputTriggered,     // Transition to InputPressed
-        InputPressed,
+        InputPressed,       // State of a key while it is held down.
-        InputReleased
+        InputReleased       // Released keys are removed from state containers.
       };
 
       /*************************************************************************
        * Public Methods
        ************************************************************************/
 
-      // State checking
+      //
+      // State updating.
+
+      /**
+       * Update state for all mouse button and key instances.
+       */
+      static void update();
+
+      /**
+       * @param key Key to set InputRegistered state.
+       */
+      static void registerKeyPress(int key);
+
+      /**
+       * @param key Key to set InputReleased state.
+       */
+      static void registerKeyRelease(int key);
+
+      /**
+       * @param button Mouse button to set InputRegistered state.
+       */
+      static void registerMousePress(Qt::MouseButton button);
+
+      /**
+       * @param button Mouse button to set InputReleased state.
+       */
+      static void registerMouseRelease(Qt::MouseButton button);
+
+      /**
+       * Reset input state for all key and mouse buttons.
+       */
+      static void reset();
+
+      //
+      // State Checking.
+
+      /**
+       * @param key Key to check state.
+       * @return True if the key is in InputTriggered state.
+       */
       inline static bool keyTriggered(Qt::Key key) {
         return keyState(key) == InputTriggered;
       }
 
+      /**
+       * @param key Key to check state.
+       * @return True if the key is in InputPressed state.
+       */
       inline static bool keyPressed(Qt::Key key) {
         return keyState(key) == InputPressed;
       }
 
+      /**
+       * @param key Key to check state.
+       * @return True if the key is in InputReleased state.
+       */
       inline static bool keyReleased(Qt::Key key) {
         return keyState(key) == InputReleased;
       }
 
+      /**
+       * @param button Mouse button to check state.
+       * @return True if the key is in InputTriggered state.
+       */
       inline static bool buttonTriggered(Qt::MouseButton button) {
         return buttonState(button) == InputTriggered;
       }
 
+      /**
+       * @param button Mouse button to check state.
+       * @return True if the key is in InputPressed state.
+       */
       inline static bool buttonPressed(Qt::MouseButton button) {
         return buttonState(button) == InputPressed;
       }
 
+      /**
+       * @param button Mouse button to check state.
+       * @return True if the key is in InputReleased state.
+       */
       inline static bool buttonReleased(Qt::MouseButton button) {
         return buttonState(button) == InputReleased;
       }
 
-      // Implementation
+      /**
+       * @param key The key to check InputState.
+       * @return The current InputState for the given key.
+       */
       static InputState keyState(Qt::Key key);
+
+      /**
+       * @param button The mouse button to check InputState.
+       * @return The current InputState for the mouse button.
+       */
       static InputState buttonState(Qt::MouseButton button);
 
+      /**
+       * @return QPoint representing the mouse position within the widget.
+       */
       static QPoint mousePosition();
-      static QPoint mouseDelta();
 
-      // State updating
+      /**
-      static void update();
+       * @return Delta movement of mouse from previous to current position.
-      static void registerKeyPress(int key);
+       */
-      static void registerKeyRelease(int key);
+      static QPoint mouseDelta();
-      static void registerMousePress(Qt::MouseButton button);
-      static void registerMouseRelease(Qt::MouseButton button);
-      static void reset();
   };
 }  // namespace Qtk
 

src/qtk/meshrenderer.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: MeshRenderer class for quick object creation and drawing            ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -17,8 +17,20 @@ using namespace Qtk;
 // Static QHash that holds all MeshRenderer instances using their mName as keys
 Qtk::MeshRenderer::MeshManager Qtk::MeshRenderer::sInstances;
 
+/*******************************************************************************
+ * Constructors / Destructors
+ ******************************************************************************/
+
+MeshRenderer::MeshRenderer(
+    const char * name, Vertices vertices, Indices indices, DrawMode mode) :
+    MeshRenderer(
+        name, ShapeBase(mode, std::move(vertices), std::move(indices))) {}
+
+MeshRenderer::MeshRenderer(const char * name) :
+    MeshRenderer(name, Cube(QTK_DRAW_ELEMENTS)) {}
+
 MeshRenderer::MeshRenderer(const char * name, const ShapeBase & shape) :
-    Object(name, shape, MESH), mVertexShader(":/multi-color.vert"),
+    Object(name, shape, QTK_MESH), mVertexShader(":/multi-color.vert"),
     mFragmentShader(":/multi-color.frag"), mDrawType(GL_TRIANGLES) {
   mShape = Shape(shape);
   init();
@@ -29,20 +41,8 @@ MeshRenderer::~MeshRenderer() {
   sInstances.remove(mName);
 }
 
-// Static member function to retrieve instances of MeshRenderers
-MeshRenderer * MeshRenderer::getInstance(const QString & name) {
-  if(!sInstances.contains(name)) {
-#if QTK_DEBUG
-    qDebug() << "Attempt to access MeshRenderer instance that does not exist! ("
-             << qPrintable(name) << ")\n";
-#endif
-    return nullptr;
-  }
-  return sInstances[name];
-}
-
 /*******************************************************************************
- * Public Member Functions
+ * Public Methods
  ******************************************************************************/
 
 void MeshRenderer::init() {
@@ -123,33 +123,11 @@ void MeshRenderer::draw() {
   releaseShaders();
 }
 
-void MeshRenderer::setShaders(
+void MeshRenderer::enableAttributeArray(int location) {
-    const std::string & vert, const std::string & frag) {
-  mVertexShader = vert;
-  mFragmentShader = frag;
-  init();
-}
-
-void MeshRenderer::setUniformMVP(
-    const char * model, const char * view, const char * projection) {
   ShaderBindScope lock(&mProgram, mBound);
-  mProgram.setUniformValue(projection, Scene::getProjectionMatrix());
+  mVAO.bind();
-  mProgram.setUniformValue(view, Scene::getViewMatrix());
+  mProgram.enableAttributeArray(location);
-  mProgram.setUniformValue(model, mTransform.toMatrix());
+  mVAO.release();
-}
-
-void MeshRenderer::setColor(const QVector3D & color) {
-  if(mShape.mColors.empty()) {
-    for(const auto & vertex : mShape.getVertices()) {
-      mShape.mColors.push_back(color);
-    }
-  } else {
-    for(int i = 0; i < mShape.getColors().size(); i++) {
-      mShape.mColors[i] = color;
-    }
-  }
-  // TODO: Factor this out so we don't need to reinitialize
-  init();
 }
 
 void MeshRenderer::reallocateTexCoords(const TexCoords & t, unsigned dims) {
@@ -185,11 +163,60 @@ void MeshRenderer::reallocateNormals(const Normals & n, unsigned dims) {
   mVAO.release();
 }
 
-/*******************************************************************************
+void MeshRenderer::setShaders(
- * Inherited Virtual Member Functions
+    const std::string & vert, const std::string & frag) {
- ******************************************************************************/
+  mVertexShader = vert;
+  mFragmentShader = frag;
+  init();
+}
+
+void MeshRenderer::setUniformMVP(
+    const char * model, const char * view, const char * projection) {
+  ShaderBindScope lock(&mProgram, mBound);
+  mProgram.setUniformValue(projection, Scene::getProjectionMatrix());
+  mProgram.setUniformValue(view, Scene::getViewMatrix());
+  mProgram.setUniformValue(model, mTransform.toMatrix());
+}
 
 void MeshRenderer::setShape(const Shape & value) {
   Object::setShape(value);
   init();
 }
+
+void MeshRenderer::setColor(const QVector3D & color) {
+  if(mShape.mColors.empty()) {
+    for(const auto & vertex : mShape.getVertices()) {
+      mShape.mColors.push_back(color);
+    }
+  } else {
+    for(int i = 0; i < mShape.getColors().size(); i++) {
+      mShape.mColors[i] = color;
+    }
+  }
+  // TODO: Factor this out so we don't need to reinitialize
+  init();
+}
+
+void MeshRenderer::setAttributeBuffer(
+    int location, GLenum type, int offset, int tupleSize, int stride) {
+  ShaderBindScope lock(&mProgram, mBound);
+  mVAO.bind();
+  mProgram.setAttributeBuffer(location, type, offset, tupleSize, stride);
+  mVAO.release();
+}
+
+/*******************************************************************************
+ * Static Public Methods
+ ******************************************************************************/
+
+// Static member function to retrieve instances of MeshRenderers
+MeshRenderer * MeshRenderer::getInstance(const QString & name) {
+  if(!sInstances.contains(name)) {
+#if QTK_DEBUG
+    qDebug() << "Attempt to access MeshRenderer instance that does not exist! ("
+             << qPrintable(name) << ")\n";
+#endif
+    return nullptr;
+  }
+  return sInstances[name];
+}

src/qtk/meshrenderer.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: MeshRenderer class for quick object creation and drawing            ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -10,9 +10,9 @@
 
 #include <utility>
 
-#include "mesh.h"
 #include "object.h"
 #include "qtkapi.h"
+#include "shape.h"
 
 namespace Qtk {
   class QTKAPI MeshRenderer : public Object {
@@ -21,93 +21,179 @@ namespace Qtk {
        * Typedefs
        ************************************************************************/
 
-      /* Static QHash of all mesh objects within the scene. */
+      /** Static QHash of all mesh objects within the scene. */
       typedef QHash<QString, MeshRenderer *> MeshManager;
 
       /*************************************************************************
        * Constructors / Destructors
        ************************************************************************/
 
-      // Delegate constructors
+      /**
+       * Delegate constructor.
+       * Constructs a MeshRenderer with custom vertices and indices for more
+       * complex geometry.
+       *
+       * @param name Name to use for the new QObject.
+       * @param vertices Vertices to use for initializing geometry shape.
+       * @param indices Indicess to use for initializes geometry shape.
+       * @param mode OpenGL draw mode. Supported modes are prefixed with QTK_*
+       */
       MeshRenderer(
           const char * name, Vertices vertices, Indices indices,
-          DrawMode mode = QTK_DRAW_ARRAYS) :
+          DrawMode mode = QTK_DRAW_ARRAYS);
-          MeshRenderer(
-              name, ShapeBase(mode, std::move(vertices), std::move(indices))) {}
 
-      explicit MeshRenderer(const char * name) :
+      /**
-          MeshRenderer(name, Cube(QTK_DRAW_ELEMENTS)) {}
+       * Delegate constructor.
+       * Constructs a MeshRenderer with a default shape of a cube.
+       *
+       * @param name Name to use for the new QObject.
+       */
+      explicit MeshRenderer(const char * name);
 
-      // Constructor
+      /**
+       * Construct a MeshRenderer.
+       * Default shaders will be used unless subsequently set by the caller.
+       *
+       * @param name Name to use for the new QObject.
+       * @param shape The shape of the MeshRenderer.
+       *    For models this can be set using ShapeBase ctors.
+       */
       MeshRenderer(const char * name, const ShapeBase & shape);
-      ~MeshRenderer() override;
+
+      ~MeshRenderer();
 
       /*************************************************************************
        * Public Methods
        ************************************************************************/
 
+      /**
+       * Initializes OpenGL buffers and settings for this MeshRenderer.
+       */
       void init();
+
+      /**
+       * Draws this MeshRenderer.
+       */
       void draw();
 
-      inline void enableAttributeArray(int location) {
+      /**
-        ShaderBindScope lock(&mProgram, mBound);
+       * Enables shader attribute array from the MeshRenderer's VAO.
-        mVAO.bind();
+       * @param location Index location of the attribute array to enable.
-        mProgram.enableAttributeArray(location);
+       */
-        mVAO.release();
+      void enableAttributeArray(int location);
-      }
 
+      /**
+       * Reallocates texture coordinates to the mNBO member object.
+       *
+       * @param t Texture coordinates to reallocate.
+       * @param dims Number of dimensions to use for the coordinates.
+       */
       void reallocateTexCoords(const TexCoords & t, unsigned dims = 2);
 
+      /**
+       * Reallocates normals to the mNBO member object.
+       *
+       * @param n Normal coordinate to reallocate.
+       * @param dims Number of dimensions to use for the coordinates.
+       */
       void reallocateNormals(const Normals & n, unsigned dims = 3);
 
       /*************************************************************************
        * Setters
        ************************************************************************/
 
-      // Draw types like GL_TRIANGLES, GL_POINTS, GL_LINES, etc
+      /**
-      void setDrawType(int drawType) { mDrawType = drawType; }
+       * Set OpenGL draw type. GL_TRIANGLES, GL_POINTS, GL_LINES, etc.
+       *
+       * @param drawType The draw type to use for this MeshRenderer.
+       */
+      inline void setDrawType(int drawType) { mDrawType = drawType; }
 
-      // Shader settings
+      /**
+       * @param vert Path to vertex shader to use for this MeshRenderer.
+       */
       inline void setShaderVertex(const std::string & vert) {
         mVertexShader = vert;
       }
 
+      /**
+       * @param frag Path to fragment shader to use for this MeshRenderer.
+       */
       inline void setShaderFragment(const std::string & frag) {
         mFragmentShader = frag;
       }
 
+      /**
+       * @param vert Path to vertex shader to use for this MeshRenderer.
+       * @param frag Path to fragment shader to use for this MeshRenderer.
+       */
       void setShaders(const std::string & vert, const std::string & frag);
 
+      /**
+       * @tparam T Type of the uniform value to set.
+       * @param location Index location of the uniform value we are setting.
+       * @param value The value to use for the uniform.
+       */
       template <typename T> inline void setUniform(int location, T value) {
         ShaderBindScope lock(&mProgram, mBound);
         mProgram.setUniformValue(location, value);
       }
 
+      /**
+       * @tparam T Type of the uniform value to set.
+       * @param location Name of the uniform value we are setting.
+       * @param value The value to use for the uniform.
+       */
       template <typename T>
       inline void setUniform(const char * location, T value) {
         ShaderBindScope lock(&mProgram, mBound);
         mProgram.setUniformValue(location, value);
       }
 
-      // Set MVP matrix using this Object's transform
+      /**
-      // + View and projection provided by MainWidget static members
+       * Sets the MVP matrices for this object within the scene.
+       * Model matrix is provided by this model's transform.
+       * View and Projection matrices are provided by the scene.
+       *
+       * @param model Name of the uniform to store the Model matrix.
+       * @param view Name of the uniform to store the View matrix.
+       * @param projection Name of the uniform to store the Projection matrix.
+       */
       void setUniformMVP(
           const char * model = "uModel", const char * view = "uView",
           const char * projection = "uProjection");
 
-      // These functions modify data stored in a VBO
+      /**
-      // + After calling them, the VBO will need to be reallocated
+       * Sets the shape of the MeshRenderer using the Object base class method.
+       * The MeshRenderer will be reinitialized after this call using `init()`.
+       *
+       * @param value Shape to use for this MeshRenderer.
+       */
       void setShape(const Shape & value) override;
+
+      /**
+       * Sets all vertices in the mesh to a color.
+       * The MeshRenderer will be reinitialized after this call using `init()`.
+       *
+       * @param color The color to use for the entire mesh.
+       */
       void setColor(const QVector3D & color);
 
+      /**
+       * Updates an attribute buffer. This should be called whenever related
+       * buffers are reallocated. If the new buffer uses an identical format
+       * this may not be required.
+       *
+       * @param location Index location of the attribute buffer to set.
+       * @param type The type of the values within the attribute buffer.
+       * @param offset Offset to the beginning of the buffer.
+       * @param tupleSize Size of each group of elements in the buffer.
+       *    For (x, y) positions this would be 2, (x, y, z) would be 3, etc.
+       * @param stride Stride between groups of elements in the buffer.
+       *    For example (x, y) data stride is `2 * sizeof(type)`
+       */
       void setAttributeBuffer(
-          int location, GLenum type, int offset, int tupleSize,
+          int location, GLenum type, int offset, int tupleSize, int stride = 0);
-          int stride = 0) {
-        ShaderBindScope lock(&mProgram, mBound);
-        mVAO.bind();
-        mProgram.setAttributeBuffer(location, type, offset, tupleSize, stride);
-        mVAO.release();
-      }
 
       /*************************************************************************
        * Accessors
@@ -120,7 +206,10 @@ namespace Qtk {
        */
       static MeshRenderer * getInstance(const QString & name);
 
-      Transform3D & getTransform() { return mTransform; }
+      /**
+       * @return Transform3D attached to this MeshRenderer.
+       */
+      inline Transform3D & getTransform() { return mTransform; }
 
     private:
       /*************************************************************************

src/qtk/model.cpp

@@ -1,7 +1,7 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
-## About: Model classes for importing with Assimp                             ##
+## About: Model class for importing with Assimp                               ##
 ##        From following tutorials on learnopengl.com                         ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -15,145 +15,24 @@
 
 using namespace Qtk;
 
+/** Static QHash used to store and access models globally. */
 Model::ModelManager Model::mManager;
 
-// Static function to access ModelManager for getting Models by name
-Model * Model::getInstance(const char * name) {
-  return mManager[name];
-}
-
 /*******************************************************************************
- * ModelMesh Private Member Functions
+ * Public Member Functions
- ******************************************************************************/
-
-void ModelMesh::initMesh(const char * vert, const char * frag) {
-  initializeOpenGLFunctions();
-
-  // Create VAO, VBO, EBO
-  mVAO->create();
-  mVBO->create();
-  mEBO->create();
-
-  mVAO->bind();
-
-  // Allocate VBO
-  mVBO->setUsagePattern(QOpenGLBuffer::StaticDraw);
-  mVBO->bind();
-
-  mVBO->allocate(mVertices.data(), mVertices.size() * sizeof(mVertices[0]));
-
-  // Allocate EBO
-  mEBO->setUsagePattern(QOpenGLBuffer::StaticDraw);
-  mEBO->bind();
-  mEBO->allocate(mIndices.data(), mIndices.size() * sizeof(mIndices[0]));
-  mEBO->release();
-
-  // Load and link shaders
-  mProgram->addShaderFromSourceFile(QOpenGLShader::Vertex, vert);
-  mProgram->addShaderFromSourceFile(QOpenGLShader::Fragment, frag);
-  mProgram->link();
-  mProgram->bind();
-
-  // Positions
-  mProgram->enableAttributeArray(0);
-  mProgram->setAttributeBuffer(
-      0, GL_FLOAT, offsetof(ModelVertex, mPosition), 3, sizeof(ModelVertex));
-
-  // Normals
-  mProgram->enableAttributeArray(1);
-  mProgram->setAttributeBuffer(
-      1, GL_FLOAT, offsetof(ModelVertex, mNormal), 3, sizeof(ModelVertex));
-
-  // Texture Coordinates
-  mProgram->enableAttributeArray(2);
-  mProgram->setAttributeBuffer(
-      2, GL_FLOAT, offsetof(ModelVertex, mTextureCoord), 2,
-      sizeof(ModelVertex));
-
-  // Vertex tangents
-  mProgram->enableAttributeArray(3);
-  mProgram->setAttributeBuffer(
-      3, GL_FLOAT, offsetof(ModelVertex, mTangent), 3, sizeof(ModelVertex));
-
-  // Vertex bitangents
-  mProgram->enableAttributeArray(4);
-  mProgram->setAttributeBuffer(
-      4, GL_FLOAT, offsetof(ModelVertex, mBitangent), 3, sizeof(ModelVertex));
-
-  mProgram->release();
-  mVBO->release();
-  mVAO->release();
-}
-
-/*******************************************************************************
- * ModelMesh Public Member Functions
- ******************************************************************************/
-
-void ModelMesh::draw(QOpenGLShaderProgram & shader) {
-  mVAO->bind();
-  // Bind shader
-  shader.bind();
-
-  // Set Model View Projection values
-  shader.setUniformValue("uModel", mTransform.toMatrix());
-  shader.setUniformValue("uView", Scene::getViewMatrix());
-  shader.setUniformValue("uProjection", Scene::getProjectionMatrix());
-
-  GLuint diffuseCount = 1;
-  GLuint specularCount = 1;
-  GLuint normalCount = 1;
-  for(GLuint i = 0; i < mTextures.size(); i++) {
-    // Activate the current texture index by adding offset to GL_TEXTURE0
-    glActiveTexture(GL_TEXTURE0 + i);
-    mTextures[i].mTexture->bind();
-
-    // Get a name for the texture using a known convention -
-    // Diffuse:   material.texture_diffuse1, material.texture_diffuse2, ...
-    // Specular:   material.texture_specular1, material.texture_specular2, ...
-    std::string number;
-    std::string name = mTextures[i].mType;
-    if(name == "texture_diffuse") {
-      number = std::to_string(diffuseCount++);
-    }
-    if(name == "texture_specular") {
-      number = std::to_string(specularCount++);
-    }
-    if(name == "texture_normal") {
-      number = std::to_string(normalCount++);
-    }
-
-    // Set the uniform to track this texture ID using our naming convention
-    shader.setUniformValue((name + number).c_str(), i);
-  }
-
-  // Draw the mesh
-  glDrawElements(
-      GL_TRIANGLES, mIndices.size(), GL_UNSIGNED_INT, mIndices.data());
-
-  // Release shader, textures
-  for(const auto & texture : mTextures) {
-    texture.mTexture->release();
-  }
-  shader.release();
-  mVAO->release();
-  glActiveTexture(GL_TEXTURE0);
-}
-
-/*******************************************************************************
- * Model Public Member Functions
  ******************************************************************************/
 
 void Model::draw() {
-  for(auto & mMeshe : mMeshes) {
+  for(auto & mesh : mMeshes) {
-    mMeshe.mTransform = mTransform;
+    mesh.mTransform = mTransform;
-    mMeshe.draw();
+    mesh.draw();
   }
 }
 
 void Model::draw(QOpenGLShaderProgram & shader) {
-  for(auto & mMeshe : mMeshes) {
+  for(auto & mesh : mMeshes) {
-    mMeshe.mTransform = mTransform;
+    mesh.mTransform = mTransform;
-    mMeshe.draw(shader);
+    mesh.draw(shader);
   }
 }
 
@@ -175,8 +54,13 @@ void Model::flipTexture(const std::string & fileName, bool flipX, bool flipY) {
   }
 }
 
+// Static function to access ModelManager for getting Models by name
+Model * Qtk::Model::getInstance(const char * name) {
+  return mManager[name];
+}
+
 /*******************************************************************************
- * Model Private Member Functions
+ * Private Member Functions
  ******************************************************************************/
 
 void Model::loadModel(const std::string & path) {
@@ -210,7 +94,7 @@ void Model::loadModel(const std::string & path) {
   // Sort models by their distance from the camera
   // Optimizes drawing so that overlapping objects are not overwritten
   // + Since the topmost object will be drawn first
-  sortModels();
+  sortModelMeshes();
 
   // Object finished loading, insert it into ModelManager
   mManager.insert(getName(), this);
@@ -362,7 +246,7 @@ ModelMesh::Textures Model::loadMaterialTextures(
   return textures;
 }
 
-void Model::sortModels() {
+void Model::sortModelMeshes() {
   auto cameraPos = Scene::getCamera().getTransform();
   auto cameraDistance = [&cameraPos](const ModelMesh & a, const ModelMesh & b) {
     // Sort by the first vertex position in the model

src/qtk/model.h

@@ -1,7 +1,7 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
-## About: Model classes for importing with Assimp                             ##
+## About: Model class for importing with Assimp                               ##
 ##        From following tutorials on learnopengl.com                         ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -9,115 +9,19 @@
 #ifndef QTK_MODEL_H
 #define QTK_MODEL_H
 
-// QT
+// Qt
-#include <QObject>
-#include <QOpenGLBuffer>
 #include <QOpenGLFunctions>
-#include <QOpenGLShaderProgram>
-#include <QOpenGLTexture>
-#include <QOpenGLVertexArrayObject>
 
 // Assimp
 #include <assimp/postprocess.h>
 #include <assimp/scene.h>
 #include <assimp/Importer.hpp>
 
-// QTK
+// Qtk
-#include "object.h"
+#include "modelmesh.h"
 #include "qtkapi.h"
-#include "transform3D.h"
 
 namespace Qtk {
-  /**
-   * 3D models will store this data for each vertex in geometry.
-   */
-  struct QTKAPI ModelVertex {
-      QVector3D mPosition;
-      QVector3D mNormal;
-      QVector2D mTextureCoord;
-      QVector3D mTangent;
-      QVector3D mBitangent;
-  };
-
-  /**
-   * Struct to store model textures. 3D Models may have multiple.
-   */
-  struct QTKAPI ModelTexture {
-      GLuint mID {};
-      QOpenGLTexture * mTexture {};
-      std::string mType {};
-      std::string mPath {};
-  };
-
-  class Model;
-
-  /**
-   * Mesh class specialized for storing 3D model data.
-   * Eventually this can be consolidated into a more generic class.
-   */
-  class QTKAPI ModelMesh : protected QOpenGLFunctions {
-    public:
-      /*************************************************************************
-       * Typedefs
-       ************************************************************************/
-
-      friend Model;
-      typedef std::vector<ModelVertex> Vertices;
-      typedef std::vector<GLuint> Indices;
-      typedef std::vector<ModelTexture> Textures;
-
-      /*************************************************************************
-       * Constructors, Destructors
-       ************************************************************************/
-
-      ModelMesh(
-          Vertices vertices, Indices indices, Textures textures,
-          const char * vertexShader = ":/model-basic.vert",
-          const char * fragmentShader = ":/model-basic.frag") :
-          mProgram(new QOpenGLShaderProgram),
-          mVAO(new QOpenGLVertexArrayObject),
-          mVBO(new QOpenGLBuffer(QOpenGLBuffer::VertexBuffer)),
-          mEBO(new QOpenGLBuffer(QOpenGLBuffer::IndexBuffer)),
-          mVertices(std::move(vertices)), mIndices(std::move(indices)),
-          mTextures(std::move(textures)) {
-        initMesh(vertexShader, fragmentShader);
-      }
-
-      ~ModelMesh() = default;
-
-      /*************************************************************************
-       * Public Methods
-       ************************************************************************/
-
-      inline void draw() { draw(*mProgram); }
-
-      void draw(QOpenGLShaderProgram & shader);
-
-      /*************************************************************************
-       * Public Members
-       ************************************************************************/
-
-      Vertices mVertices {};
-      Indices mIndices {};
-      Textures mTextures {};
-      Transform3D mTransform;
-
-    private:
-      /*************************************************************************
-       * Private Methods
-       ************************************************************************/
-
-      void initMesh(const char * vert, const char * frag);
-
-      /*************************************************************************
-       * Private Members
-       ************************************************************************/
-
-      QOpenGLBuffer *mVBO, *mEBO;
-      QOpenGLVertexArrayObject * mVAO;
-      QOpenGLShaderProgram * mProgram;
-  };
-
   /**
    * Model object that has a ModelMesh.
    * Top-level object that represents 3D models stored within a scene.
@@ -128,19 +32,27 @@ namespace Qtk {
        * Typedefs
        ************************************************************************/
 
-      /* ModelManager typedef that will manage global model access. */
+      /** ModelManager typedef that will manage global model access. */
       typedef QHash<QString, Model *> ModelManager;
 
       /*************************************************************************
        * Constructors, Destructors
        ************************************************************************/
 
-      // Default model shaders are provided but we can override them in the ctor
+      /**
+       * Constructs a Model
+       * If no shaders are provided we will use default shaders.
+       *
+       * @param name Name to use for the Model's objectName.
+       * @param path Path to the model to load for construction.
+       * @param vertexShader Optional path to custom vertex shader.
+       * @param fragmentShader Optional path to custom fragment shader.
+       */
       inline Model(
           const char * name, const char * path,
           const char * vertexShader = ":/model-basic.vert",
           const char * fragmentShader = ":/model-basic.frag") :
-          Object(name, MODEL),
+          Object(name, QTK_MODEL),
           mModelPath(path), mVertexShader(vertexShader),
           mFragmentShader(fragmentShader) {
         loadModel(mModelPath);
@@ -152,7 +64,16 @@ namespace Qtk {
        * Public Methods
        ************************************************************************/
 
+      /**
+       * Draws the model using attached shader program.
+       */
       void draw();
+
+      /**
+       * Draws the model using a custom shader program.
+       *
+       * @param shader Shader program to use to draw the model.
+       */
       void draw(QOpenGLShaderProgram & shader);
 
       /**
@@ -170,13 +91,13 @@ namespace Qtk {
        ************************************************************************/
 
       /**
-       * Sets a uniform value
+       * Sets a uniform value for each ModelMesh within this Model.
        *
        * @tparam T The type of the value we are settings
        * @param location The uniform location
        * @param value The value to assign to the uniform
        */
-      template <typename T> void setUniform(const char * location, T value) {
+      template <typename T> inline void setUniform(const char * location, T value) {
         for(auto & mesh : mMeshes) {
           mesh.mProgram->bind();
           mesh.mProgram->setUniformValue(location, value);
@@ -195,9 +116,12 @@ namespace Qtk {
        * @param name The name of the model to load as it was constructed.
        * @return Pointer to the model stored within the scene.
        */
-      static Model * getInstance(const char * name);
+      [[nodiscard]] static Model * getInstance(const char * name);
 
-      Transform3D & getTransform() { return mTransform; }
+      /**
+       * @return Transform3D attached to this Model.
+       */
+      inline Transform3D & getTransform() { return mTransform; }
 
     private:
       /*************************************************************************
@@ -209,44 +133,69 @@ namespace Qtk {
        * For a full list of formats see assimp documentation:
        *  https://github.com/assimp/assimp/blob/master/doc/Fileformats.md
        *
-       * Models should not be loaded into Qt resource system.
+       * Large models should not be loaded into Qt resource system.
        * Instead pass an *absolute* path to this function.
        * Relative paths will break if Qtk is executed from different locations.
        *
-       * Models can also be loaded from the `qtk/resource` directory using qrc
-       * format loadModel(":/models/backpack/backpack.obj").
-       * This does not use Qt resource system, it just provides similar syntax
-       * for accessing files within the same `resources/` directory.
-       *
-       * See resourcemanager.h for more information on how this works.
-       *
        * @param path Absolute path to a model in .obj or another format accepted
        * by assimp.
        */
       void loadModel(const std::string & path);
 
+      /**
+       * Process a node in the model's geometry using Assimp.
+       *
+       * @param node The Assimp node to process.
+       * @param scene The Assimp scene for the loaded model.
+       */
       void processNode(aiNode * node, const aiScene * scene);
 
+      /**
+       * Process a mesh within a node using Assimp.
+       *
+       * @param mesh The Assimp mesh to process.
+       * @param scene The Assimp scene for the loaded model.
+       * @return
+       */
       ModelMesh processMesh(aiMesh * mesh, const aiScene * scene);
 
+      /**
+       * Load a collection of material texture using Assimp.
+       * This function loads diffuse, specular, and narmal material textures.
+       * A Mesh may have many of any or all of the texture types above.
+       * Models can have many Meshes attached.
+       * This function returns all textures for a single Mesh within a Model.
+       *
+       * @param mat Loaded Assimp material.
+       * @param type Type of the material.
+       * @param typeName Texture type name in string format.
+       * @return Collection of all textures for a single ModelMesh.
+       */
       ModelMesh::Textures loadMaterialTextures(
           aiMaterial * mat, aiTextureType type, const std::string & typeName);
 
-      void sortModels();
+      /**
+       * Sorts each mesh in the Model based on distance from the camera.
+       * This is for efficient drawing in OpenGL by preventing the drawing of
+       * objects not visible due to being partially or entirely behind another
+       * object.
+       */
+      void sortModelMeshes();
 
       /*************************************************************************
        * Private Members
        ************************************************************************/
-      /* Static QHash used to store and access models globally. */
+
+      /** Static QHash used to store and access models globally. */
       static ModelManager mManager;
 
-      /* Container to store N loaded textures for this model. */
+      /** Container to store N loaded textures for this model. */
       ModelMesh::Textures mTexturesLoaded {};
-      /* Container to store N loaded meshes for this model. */
+      /** Container to store N loaded meshes for this model. */
       std::vector<ModelMesh> mMeshes {};
-      /* The directory this model and it's textures are stored. */
+      /** The directory this model and it's textures are stored. */
       std::string mDirectory {};
-      /* File names for shaders and 3D model on disk. */
+      /** File names for shaders and 3D model on disk. */
       const char *mVertexShader, *mFragmentShader, *mModelPath;
   };
 }  // namespace Qtk

src/qtk/modelmesh.cpp

@@ -0,0 +1,129 @@
+/*##############################################################################
+## Author: Shaun Reed                                                         ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
+## About: ModelMesh class for importing 3D models with Assimp                 ##
+##                                                                            ##
+## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
+##############################################################################*/
+
+#include "scene.h"
+#include "modelmesh.h"
+
+using namespace Qtk;
+
+/*******************************************************************************
+ * Public Member Functions
+ ******************************************************************************/
+
+void ModelMesh::draw(QOpenGLShaderProgram & shader) {
+  mVAO->bind();
+  // Bind shader
+  shader.bind();
+
+  // Set Model View Projection values
+  shader.setUniformValue("uModel", mTransform.toMatrix());
+  shader.setUniformValue("uView", Scene::getViewMatrix());
+  shader.setUniformValue("uProjection", Scene::getProjectionMatrix());
+
+  GLuint diffuseCount = 1;
+  GLuint specularCount = 1;
+  GLuint normalCount = 1;
+  for(GLuint i = 0; i < mTextures.size(); i++) {
+    // Activate the current texture index by adding offset to GL_TEXTURE0
+    glActiveTexture(GL_TEXTURE0 + i);
+    mTextures[i].mTexture->bind();
+
+    // Get a name for the texture using a known convention -
+    // Diffuse:   material.texture_diffuse1, material.texture_diffuse2, ...
+    // Specular:   material.texture_specular1, material.texture_specular2, ...
+    std::string number;
+    std::string name = mTextures[i].mType;
+    if(name == "texture_diffuse") {
+      number = std::to_string(diffuseCount++);
+    }
+    if(name == "texture_specular") {
+      number = std::to_string(specularCount++);
+    }
+    if(name == "texture_normal") {
+      number = std::to_string(normalCount++);
+    }
+
+    // Set the uniform to track this texture ID using our naming convention
+    shader.setUniformValue((name + number).c_str(), i);
+  }
+
+  // Draw the mesh
+  glDrawElements(
+      GL_TRIANGLES, mIndices.size(), GL_UNSIGNED_INT, mIndices.data());
+
+  // Release shader, textures
+  for(const auto & texture : mTextures) {
+    texture.mTexture->release();
+  }
+  shader.release();
+  mVAO->release();
+  glActiveTexture(GL_TEXTURE0);
+}
+
+/*******************************************************************************
+ * Private Member Functions
+ ******************************************************************************/
+
+void ModelMesh::initMesh(const char * vert, const char * frag) {
+  initializeOpenGLFunctions();
+
+  // Create VAO, VBO, EBO
+  mVAO->create();
+  mVBO->create();
+  mEBO->create();
+
+  mVAO->bind();
+
+  // Allocate VBO
+  mVBO->setUsagePattern(QOpenGLBuffer::StaticDraw);
+  mVBO->bind();
+
+  mVBO->allocate(mVertices.data(), mVertices.size() * sizeof(mVertices[0]));
+
+  // Allocate EBO
+  mEBO->setUsagePattern(QOpenGLBuffer::StaticDraw);
+  mEBO->bind();
+  mEBO->allocate(mIndices.data(), mIndices.size() * sizeof(mIndices[0]));
+  mEBO->release();
+
+  // Load and link shaders
+  mProgram->addShaderFromSourceFile(QOpenGLShader::Vertex, vert);
+  mProgram->addShaderFromSourceFile(QOpenGLShader::Fragment, frag);
+  mProgram->link();
+  mProgram->bind();
+
+  // Positions
+  mProgram->enableAttributeArray(0);
+  mProgram->setAttributeBuffer(
+      0, GL_FLOAT, offsetof(ModelVertex, mPosition), 3, sizeof(ModelVertex));
+
+  // Normals
+  mProgram->enableAttributeArray(1);
+  mProgram->setAttributeBuffer(
+      1, GL_FLOAT, offsetof(ModelVertex, mNormal), 3, sizeof(ModelVertex));
+
+  // Texture Coordinates
+  mProgram->enableAttributeArray(2);
+  mProgram->setAttributeBuffer(
+      2, GL_FLOAT, offsetof(ModelVertex, mTextureCoord), 2,
+      sizeof(ModelVertex));
+
+  // Vertex tangents
+  mProgram->enableAttributeArray(3);
+  mProgram->setAttributeBuffer(
+      3, GL_FLOAT, offsetof(ModelVertex, mTangent), 3, sizeof(ModelVertex));
+
+  // Vertex bitangents
+  mProgram->enableAttributeArray(4);
+  mProgram->setAttributeBuffer(
+      4, GL_FLOAT, offsetof(ModelVertex, mBitangent), 3, sizeof(ModelVertex));
+
+  mProgram->release();
+  mVBO->release();
+  mVAO->release();
+}

src/qtk/modelmesh.h

@@ -0,0 +1,138 @@
+/*##############################################################################
+## Author: Shaun Reed                                                         ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
+## About: ModelMesh class for importing 3D models with Assimp                 ##
+##                                                                            ##
+## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
+##############################################################################*/
+
+#ifndef QTK_MODELMESH_H
+#define QTK_MODELMESH_H
+
+// QTK
+#include "object.h"
+#include "transform3D.h"
+
+namespace Qtk {
+  /**
+   * 3D models will store this data for each vertex in geometry.
+   */
+  struct QTKAPI ModelVertex {
+      QVector3D mPosition;
+      QVector3D mNormal;
+      QVector2D mTextureCoord;
+      QVector3D mTangent;
+      QVector3D mBitangent;
+  };
+
+  /**
+   * Struct to store model textures. 3D Models may have multiple.
+   */
+  struct QTKAPI ModelTexture {
+      /** Texture ID for for this texture. */
+      GLuint mID {};
+      QOpenGLTexture * mTexture {};
+
+      /**
+       * Type of this texture in string format.
+       * See calls to Model::loadMaterialTexture in Model::processMesh
+       */
+      std::string mType {};
+      /** Path to the model on disk. */
+      std::string mPath {};
+  };
+
+  class Model;
+
+  /**
+   * Mesh class specialized for storing 3D model data.
+   * Eventually this can be consolidated into a more generic class.
+   */
+  class QTKAPI ModelMesh : protected QOpenGLFunctions {
+    public:
+      /*************************************************************************
+       * Typedefs
+       ************************************************************************/
+
+      friend Model;
+      typedef std::vector<ModelVertex> Vertices;
+      typedef std::vector<GLuint> Indices;
+      typedef std::vector<ModelTexture> Textures;
+
+      /*************************************************************************
+       * Constructors, Destructors
+       ************************************************************************/
+
+      /**
+       * Construct a ModelMesh.
+       * If no shaders are provided defaults will be used.
+       *
+       * @param vertices Vertex data to use for this ModelMesh.
+       * @param indices Index data to use for this ModelMesh.
+       * @param textures Collection of ModelTextures for this ModelMesh.
+       * @param vertexShader Path to vertex shader for this ModelMesh.
+       * @param fragmentShader Path to fragment shader for this ModelMesh.
+       */
+      ModelMesh(
+          Vertices vertices, Indices indices, Textures textures,
+          const char * vertexShader = ":/model-basic.vert",
+          const char * fragmentShader = ":/model-basic.frag") :
+          mProgram(new QOpenGLShaderProgram),
+          mVAO(new QOpenGLVertexArrayObject),
+          mVBO(new QOpenGLBuffer(QOpenGLBuffer::VertexBuffer)),
+          mEBO(new QOpenGLBuffer(QOpenGLBuffer::IndexBuffer)),
+          mVertices(std::move(vertices)), mIndices(std::move(indices)),
+          mTextures(std::move(textures)) {
+        initMesh(vertexShader, fragmentShader);
+      }
+
+      ~ModelMesh() = default;
+
+      /*************************************************************************
+       * Public Methods
+       ************************************************************************/
+
+      /**
+       * Draw the model with the attached shader program.
+       */
+      inline void draw() { draw(*mProgram); }
+
+      /**
+       * Draw the model with a custom shader program.
+       * @param shader The shader program to use for drawing the object.
+       */
+      void draw(QOpenGLShaderProgram & shader);
+
+      /*************************************************************************
+       * Public Members
+       ************************************************************************/
+
+      Vertices mVertices {};
+      Indices mIndices {};
+      Textures mTextures {};
+      Transform3D mTransform;
+
+    private:
+      /*************************************************************************
+       * Private Methods
+       ************************************************************************/
+
+      /**
+       * Initializes the buffers and shaders for this model mesh.
+       *
+       * @param vert Path to vertex shader to use for this model.
+       * @param frag Path to fragment shader to use for this model.
+       */
+      void initMesh(const char * vert, const char * frag);
+
+      /*************************************************************************
+       * Private Members
+       ************************************************************************/
+
+      QOpenGLBuffer *mVBO, *mEBO;
+      QOpenGLVertexArrayObject * mVAO;
+      QOpenGLShaderProgram * mProgram;
+  };
+}  // namespace Qtk
+
+#endif  // QTK_MODELMESH_H

src/qtk/object.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Object class for storing object data                                ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##

src/qtk/object.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Object class for storing object data                                ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -13,8 +13,8 @@
 #include <QOpenGLTexture>
 #include <QOpenGLVertexArrayObject>
 
-#include "mesh.h"
 #include "qtkapi.h"
+#include "shape.h"
 #include "texture.h"
 
 namespace Qtk {
@@ -38,7 +38,7 @@ namespace Qtk {
       /**
        * Enum flag to identify Object type without casting.
        */
-      enum Type { OBJECT, MESH, MODEL };
+      enum Type { QTK_OBJECT, QTK_MESH, QTK_MODEL };
 
       /*************************************************************************
        * Constructors / Destructors
@@ -47,12 +47,16 @@ namespace Qtk {
       // Initialize an object with no shape data assigned
       explicit Object(const char * name, Type type) :
           mName(name), mVBO(QOpenGLBuffer::VertexBuffer), mBound(false),
-          mType(type) {}
+          mType(type) {
+        setObjectName(name);
+      }
 
       // Initialize an object with shape data assigned
       Object(const char * name, const ShapeBase & shape, Type type) :
           mName(name), mVBO(QOpenGLBuffer::VertexBuffer), mShape(shape),
-          mBound(false), mType(type) {}
+          mBound(false), mType(type) {
+        setObjectName(name);
+      }
 
       ~Object() override = default;
 
@@ -156,7 +160,7 @@ namespace Qtk {
       Texture mTexture;
       const char * mName;
       bool mBound;
-      Type mType = OBJECT;
+      Type mType = QTK_OBJECT;
   };
 }  // namespace Qtk
 

src/qtk/qtkapi.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Main window for Qt6 OpenGL widget application                       ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -8,6 +8,7 @@
 #ifndef QTK_QTKAPI_H
 #define QTK_QTKAPI_H
 
+#include <QFile>
 #include <QWidget>
 #include <QtCore/QtGlobal>
 
@@ -41,8 +42,11 @@ namespace Qtk {
     return widget;
   }
 
+  /**
+   * @return Default icon to use for Qtk desktop application.
+   */
   static QIcon getIcon() {
-    return QIcon(":/icon.png");
+    return QIcon(":/icons/resources/icon.png");
   }
 }  // namespace Qtk
 

src/qtk/scene.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Classes for managing objects and data within a scene                ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -15,7 +15,7 @@ Camera3D Scene::mCamera;
 QMatrix4x4 Scene::mProjection;
 
 /*******************************************************************************
- * Constructors, Destructors
+ * Constructors / Destructors
  ******************************************************************************/
 
 Scene::Scene() : mSceneName("Default Scene") {
@@ -34,7 +34,7 @@ Scene::~Scene() {
 }
 
 /*******************************************************************************
- * Accessors
+ * Public Methods
  ******************************************************************************/
 
 std::vector<Object *> Scene::getObjects() const {
@@ -49,9 +49,14 @@ std::vector<Object *> Scene::getObjects() const {
   return objects;
 }
 
-/*******************************************************************************
+Object * Scene::getObject(const QString & name) {
- * Setters
+  for(auto object : getObjects()) {
- ******************************************************************************/
+    if(object->getName() == name) {
+      return object;
+    }
+  }
+  return Q_NULLPTR;
+}
 
 void Scene::setSkybox(Skybox * skybox) {
   delete mSkybox;
@@ -90,12 +95,3 @@ void Scene::privateDraw() {
     mesh->draw();
   }
 }
-
-Object * Scene::getObject(const QString & name) {
-  for(auto object : getObjects()) {
-    if(object->getName() == name) {
-      return object;
-    }
-  }
-  return Q_NULLPTR;
-}

src/qtk/scene.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Classes for managing objects and data within a scene                ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -78,25 +78,43 @@ namespace Qtk {
        * Accessors
        ************************************************************************/
 
+      /**
+       * @return All Qtk::Objects within the scene.
+       *    If any object is invalid, we return an empty vector.
+       */
+      [[nodiscard]] std::vector<Object *> getObjects() const;
+
+      /**
+       * Retrieve and object from the scene by it's objectName.
+       *
+       * @param name The objectName to look for within this scene.
+       * @return The found object or Q_NULLPTR if none found.
+       */
+      [[nodiscard]] Object * getObject(const QString & name);
+
       /**
        * @return Camera attached to this scene.
        */
-      static Camera3D & getCamera() { return mCamera; }
+      [[nodiscard]] inline static Camera3D & getCamera() { return mCamera; }
 
       /**
        * @return View matrix for the camera attached to this scene.
        */
-      static QMatrix4x4 getViewMatrix() { return mCamera.toMatrix(); }
+      [[nodiscard]] inline static QMatrix4x4 getViewMatrix() {
+        return mCamera.toMatrix();
+      }
 
       /**
        * @return Projection matrix for the current view into the scene.
        */
-      static QMatrix4x4 & getProjectionMatrix() { return mProjection; }
+      [[nodiscard]] inline static QMatrix4x4 & getProjectionMatrix() {
+        return mProjection;
+      }
 
       /**
        * @return The active skybox for this scene.
        */
-      inline Skybox * getSkybox() { return mSkybox; }
+      [[nodiscard]] inline Skybox * getSkybox() { return mSkybox; }
 
       /**
        * @return The name for this scene. This is entirely user defined and not
@@ -119,14 +137,6 @@ namespace Qtk {
         return mModels;
       }
 
-      /**
-       * @return All Qtk::Objects within the scene.
-       *    If any object is invalid, we return an empty vector.
-       */
-      [[nodiscard]] std::vector<Object *> getObjects() const;
-
-      [[nodiscard]] Object * getObject(const QString & name);
-
       /*************************************************************************
        * Setters
        ************************************************************************/
@@ -138,6 +148,13 @@ namespace Qtk {
 
       /**
        * Adds objects to the scene.
+       * This template provides explicit specializations for valid types.
+       * Adding any object other than these types will cause errors.
+       * TODO: Refactor to use Object base class container for scene objects.
+       *
+       * If creating a new object type for a scene, it must inherit Qtk::Object
+       * and provide a specialization for this method.
+       *
        * @param object The new object to add to the scene.
        * @return The object added to the scene.
        */
@@ -149,17 +166,15 @@ namespace Qtk {
       inline void setSceneName(QString name) { mSceneName = std::move(name); }
 
     signals:
+      /**
+       * Signal thrown when the scene is modified by adding or removing objects.
+       * This can be caught by a main application to update any associated data.
+       *
+       * @param sceneName The scene that has been updated.
+       */
       void sceneUpdated(QString sceneName);
 
     private:
-      /*************************************************************************
-       * Private Members
-       ************************************************************************/
-
-      static Camera3D mCamera;
-      static QMatrix4x4 mProjection;
-      bool mInit = false;
-
       /*************************************************************************
        * Private Methods
        ************************************************************************/
@@ -170,11 +185,14 @@ namespace Qtk {
        */
       void privateDraw();
 
-    private:
       /*************************************************************************
        * Private Members
        ************************************************************************/
 
+      static Camera3D mCamera;
+      static QMatrix4x4 mProjection;
+      bool mInit = false;
+
       QString mSceneName;
       /* The skybox for this scene. */
       Skybox * mSkybox {};

src/qtk/shape.cpp

@@ -1,12 +1,12 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Collection of static mesh data for quick initialization             ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
 ##############################################################################*/
 
-#include "mesh.h"
+#include "shape.h"
 
 using namespace Qtk;
 

src/qtk/shape.h

@@ -1,12 +1,12 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Collection of static mesh data for quick initialization             ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
 ##############################################################################*/
-#ifndef QTK_MESH_H
+#ifndef QTK_SHAPE_H
-#define QTK_MESH_H
+#define QTK_SHAPE_H
 
 #include <utility>
 
@@ -17,11 +17,6 @@
 #include "qtkapi.h"
 #include "transform3D.h"
 
-namespace Qtk {
-  class MeshRenderer;
-
-  class Object;
-
 // Define vertices for drawing a cube using two faces (8 vertex points)
 // Front Vertices
 #define VERTEX_FTR QVector3D(0.5f, 0.5f, 0.5f)    // 1
@@ -63,7 +58,6 @@ namespace Qtk {
                       VECTOR_BACK, VECTOR_BACK, VECTOR_BACK
 // clang-format on
 
-
 // Colors using QVector3Ds as RGB values
 #define WHITE   VECTOR_ONE
 #define BLACK   VECTOR_ZERO
@@ -79,6 +73,11 @@ namespace Qtk {
 #define UV_RIGHT  QVector2D(0.0f, 1.0f)
 #define UV_CORNER QVector2D(1.0f, 1.0f)
 
+namespace Qtk {
+  class MeshRenderer;
+
+  class Object;
+
   // TODO: Vertices.getData(); Vertices.getStride();
   typedef std::vector<QVector3D> Vertices;
   typedef std::vector<QVector3D> Colors;
@@ -106,6 +105,15 @@ namespace Qtk {
        * Constructors / Destructors
        ************************************************************************/
 
+      /**
+       *
+       * @param mode OpenGL draw mode to use for this shape.
+       * @param v Vertex data for this shape.
+       * @param i Index data for this shape.
+       * @param c Color data for this shape.
+       * @param t Texture coordinates for this shape.
+       * @param n Normals for this shape.
+       */
       explicit ShapeBase(
           DrawMode mode = QTK_DRAW_ARRAYS, Vertices v = {}, Indices i = {},
           Colors c = {}, TexCoords t = {}, Normals n = {}) :
@@ -118,24 +126,42 @@ namespace Qtk {
        * Accessors
        ************************************************************************/
 
+      /**
+       * @return Vertex data for this shape.
+       */
       [[nodiscard]] inline const Vertices & getVertices() const {
         return mVertices;
       }
 
+      /**
+       * @return Index data for this shape.
+       */
       [[nodiscard]] inline const Indices & getIndexData() const {
         return mIndices;
       }
 
+      /**
+       * @return Color data for this shape.
+       */
       [[nodiscard]] inline const Colors & getColors() const { return mColors; }
 
+      /**
+       * @return Texture coordinates for this shape.
+       */
       [[nodiscard]] inline const TexCoords & getTexCoords() const {
         return mTexCoords;
       }
 
+      /**
+       * @return Normals for this shape.
+       */
       [[nodiscard]] inline const Normals & getNormals() const {
         return mNormals;
       }
 
+      /**
+       * @return Stride for texture coordinates on this shape.
+       */
       [[nodiscard]] inline size_t getTexCoordsStride() const {
         return mTexCoords.size() * sizeof(mTexCoords[0]);
       }
@@ -146,7 +172,6 @@ namespace Qtk {
        ************************************************************************/
 
       DrawMode mDrawMode;
-
       Vertices mVertices {};
       Colors mColors {};
       Indices mIndices {};
@@ -161,6 +186,7 @@ namespace Qtk {
        ************************************************************************/
 
       friend MeshRenderer;
+
       friend Object;
 
       /*************************************************************************
@@ -175,30 +201,45 @@ namespace Qtk {
        * Setters
        ************************************************************************/
 
+      /**
+       * @param value Vertex data to use for this shape.
+       */
       virtual inline void setVertices(const Vertices & value) {
         mVertices = value;
       }
 
+      /**
+       * @param value Index data to use for this shape.
+       */
       virtual inline void setIndices(const Indices & value) {
         mIndices = value;
       }
 
+      /**
+       * @param value Color data to use for this shape.
+       */
       virtual inline void setColors(const Colors & value) { mColors = value; }
 
+      /**
+       * @param value Texture coordinates to use for this shape.
+       */
       virtual inline void setTexCoords(const TexCoords & value) {
         mTexCoords = value;
       }
 
+      /**
+       * @param value Normals to use for this shape.
+       */
       virtual inline void setNormals(const Normals & value) {
         mNormals = value;
       }
 
+      /**
+       * @param value Shape to copy into this Shape.
+       */
       virtual inline void setShape(const Shape & value) { *this = value; }
   };
 
-  /* Primitives inherit from ShapeBase, doesn't allow setting shape values. */
-  class QTKAPI Mesh {};
-
   /* Simple Cube shape. */
   struct QTKAPI Cube : public ShapeBase {
       explicit Cube(DrawMode mode = QTK_DRAW_ARRAYS);
@@ -210,4 +251,4 @@ namespace Qtk {
   };
 }  // namespace Qtk
 
-#endif  // QTK_MESH_H
+#endif  // QTK_SHAPE_H

src/qtk/skybox.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Skybox class using QtOpenGL                                         ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -12,6 +12,20 @@
 
 using namespace Qtk;
 
+/*******************************************************************************
+ * Constructors / Destructors
+ ******************************************************************************/
+
+Skybox::Skybox(const std::string & name) :
+    Skybox(
+        ":/right.png", ":/top.png", ":/front.png", ":/left.png", ":/bottom.png",
+        ":/back.png", name) {}
+
+Skybox::Skybox(QOpenGLTexture * cubeMap, const std::string & name) {
+  mTexture.setTexture(cubeMap);
+  init();
+}
+
 Skybox::Skybox(
     const std::string & right, const std::string & top,
     const std::string & front, const std::string & left,
@@ -27,16 +41,6 @@ Skybox::Skybox(
       QImage(back.c_str()));
 }
 
-Skybox::Skybox(const std::string & name) :
-    Skybox(
-        ":/right.png", ":/top.png", ":/front.png", ":/left.png", ":/bottom.png",
-        ":/back.png", name) {}
-
-Skybox::Skybox(QOpenGLTexture * cubeMap, const std::string & name) {
-  mTexture.setTexture(cubeMap);
-  init();
-}
-
 /*******************************************************************************
  * Public Member Functions
  ******************************************************************************/

src/qtk/skybox.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Skybox class using QtOpenGL                                         ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -16,8 +16,8 @@
 #include <QOpenGLVertexArrayObject>
 
 #include "camera3d.h"
-#include "mesh.h"
 #include "qtkapi.h"
+#include "shape.h"
 #include "texture.h"
 
 namespace Qtk {
@@ -33,11 +33,35 @@ namespace Qtk {
        ************************************************************************/
 
       // Delegate this constructor to use default skybox images
+
+      /**
+       * Construct Skybox using default images.
+       *
+       * @param name The objectName to use for the Skybox.
+       */
       explicit Skybox(const std::string & name = "Skybox");
 
+      /**
+       * Construct a skybox with an existing QOpenGLTexture.
+       * The texture should be a fully initialized cube map.
+       *
+       * @param cubeMap QOpenGLTexture to use for the new Skybox.
+       * @param name The objectName to use for the Skybox.
+       */
       explicit Skybox(
           QOpenGLTexture * cubeMap, const std::string & name = "Skybox");
 
+      /**
+       * Construct a Skybox.
+       *
+       * @param right Image to use for the right side of the Skybox.
+       * @param top Image to use for the top side of the Skybox.
+       * @param front Image to use for the front side of the Skybox.
+       * @param left Image to use for the left side of the Skybox.
+       * @param bottom Image to use for the bottom side of the Skybox.
+       * @param back Image to use for the back side of the Skybox.
+       * @param name The objectName to use for this Skybox.
+       */
       Skybox(
           const std::string & right, const std::string & top,
           const std::string & front, const std::string & left,
@@ -50,6 +74,9 @@ namespace Qtk {
        * Public Methods
        ************************************************************************/
 
+      /**
+       * Draws the skybox.
+       */
       void draw();
 
     private:
@@ -57,6 +84,9 @@ namespace Qtk {
        * Private Methods
        ************************************************************************/
 
+      /**
+       * Initializes OpenGL buffers and shaders for this skybox.
+       */
       void init();
 
       /*************************************************************************

src/qtk/texture.cpp

@@ -1,13 +1,11 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Texture class to help with texture and image initializations        ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
 ##############################################################################*/
 
-#include <utility>
-
 #include <QDebug>
 #include <QImageReader>
 
@@ -59,9 +57,7 @@ QOpenGLTexture * OpenGLTextureFactory::initCubeMap(
     const QImage & right, const QImage & top, const QImage & front,
     const QImage & left, const QImage & bottom, const QImage & back) {
   auto texture = new QOpenGLTexture(QOpenGLTexture::TargetCubeMap);
-  std::vector<QImage> faceTextures = {std::move(right),  std::move(top),
+  std::vector<QImage> faceTextures = {right, top, front, left, bottom, back};
-                                      std::move(front),  std::move(left),
-                                      std::move(bottom), std::move(back)};
   // Initialize skybox cubemap texture
   texture->create();
   texture->bind();

src/qtk/texture.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Texture class to help with texture and image initializations        ##
 ##                                                                            ##
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
@@ -156,52 +156,109 @@ namespace Qtk {
 
       Texture() = default;
 
+      /**
+       * Copies an existing Texture object.
+       *
+       * @param value Texture to copy.
+       */
       Texture(const Texture & value) {
         mOpenGLTexture = OpenGLTextureFactory::initTexture(value.mPath);
         mPath = value.mPath;
       }
 
+      /**
+       * @param path Path to texture to load on disk.
+       * @param flipX True if texture is to be flipped on the X axis.
+       * @param flipY True if texture is to be flipped on the Y axis.
+       */
       explicit Texture(
           const char * path, bool flipX = false, bool flipY = false) :
           mOpenGLTexture(OpenGLTextureFactory::initTexture(path, flipX, flipY)),
           mPath(path) {}
 
+      /**
+       * Construct a Texture using an existing QOpenGLTexture.
+       *
+       * @param texture OpenGL texture to use for this Texture.
+       */
       explicit Texture(QOpenGLTexture * texture) : mOpenGLTexture(texture) {}
 
       ~Texture() { mOpenGLTexture->destroy(); }
 
+      /*************************************************************************
+       * Public Methods
+       ************************************************************************/
+
+      /**
+       * @return True if the OpenGL texture has been initialized.
+       */
+      [[nodiscard]] inline bool hasTexture() const {
+        return mOpenGLTexture != Q_NULLPTR;
+      }
+
       /*************************************************************************
        * Accessors
        ************************************************************************/
 
+      /**
+       * @return QOpenGLTexture associated with this Texture.
+       */
       [[nodiscard]] inline QOpenGLTexture & getOpenGLTexture() const {
         return *mOpenGLTexture;
       }
 
+      /**
+       * @return Path to this Texture on disk.
+       */
       [[nodiscard]] inline std::string getPath() const { return mPath; }
 
       /*************************************************************************
        * Setters
        ************************************************************************/
 
-      void setTexture(
+      /**
+       * Replaces the current texture with a new texture.
+       *
+       * @param path Path to the new texture to load.
+       * @param flipX True if texture is to be flipped on the X axis.
+       * @param flipY True if texture is to be flipped on the Y axis.
+       */
+      inline void setTexture(
           const std::string & path, bool flipX = false, bool flipY = false) {
-        mOpenGLTexture =
+        setTexture(path.c_str(), flipX, flipY);
-            OpenGLTextureFactory::initTexture(path.data(), flipX, flipY);
-        mPath = path.data();
       }
 
-      void setTexture(
+      /**
+       * @param path Path to the new texture to load.
+       * @param flipX True if texture is to be flipped on the X axis.
+       * @param flipY True if texture is to be flipped on the Y axis.
+       */
+      inline void setTexture(
           const char * path, bool flipX = false, bool flipY = false) {
         mOpenGLTexture = OpenGLTextureFactory::initTexture(path, flipX, flipY);
         mPath = path;
       }
 
+      /**
+       * Sets this Texture to be a cube map with all identical sides.
+       *
+       * @param path Path to texture to use for all sides of the cube map.
+       */
       virtual inline void setCubeMap(const char * path) {
         mOpenGLTexture = OpenGLTextureFactory::initCubeMap(path);
         mPath = path;
       }
 
+      /**
+       * Sets this Texture to be a cube map with provided sides.
+       *
+       * @param right Path to texture to use for right cube map side.
+       * @param top Path to texture to use for top cube map side.
+       * @param front Path to texture to use for front cube map side.
+       * @param left Path to texture to use for left cube map side.
+       * @param bottom Path to texture to use for bottom cube map side.
+       * @param back Path to texture to use for back cube map side.
+       */
       virtual inline void setCubeMap(
           const char * right, const char * top, const char * front,
           const char * left, const char * bottom, const char * back) {
@@ -209,6 +266,16 @@ namespace Qtk {
             right, top, front, left, bottom, back);
       }
 
+      /**
+       * Sets this Texture to be a cube map with provided sides.
+       *
+       * @param right Path to texture to use for right cube map side.
+       * @param top Path to texture to use for top cube map side.
+       * @param front Path to texture to use for front cube map side.
+       * @param left Path to texture to use for left cube map side.
+       * @param bottom Path to texture to use for bottom cube map side.
+       * @param back Path to texture to use for back cube map side.
+       */
       virtual inline void setCubeMap(
           const QImage & right, const QImage & top, const QImage & front,
           const QImage & left, const QImage & bottom, const QImage & back) {
@@ -216,18 +283,14 @@ namespace Qtk {
             right, top, front, left, bottom, back);
       }
 
-      /*************************************************************************
-       * Public Methods
-       ************************************************************************/
-
-      [[nodiscard]] inline bool hasTexture() const {
-        return mOpenGLTexture != Q_NULLPTR;
-      }
-
     private:
       /*************************************************************************
        * Private Members
        ************************************************************************/
+
+      /**
+       * @param texture QOpenGLTexture to use for this Texture.
+       */
       inline void setTexture(QOpenGLTexture * texture) {
         mOpenGLTexture = texture;
       }
@@ -236,7 +299,6 @@ namespace Qtk {
       /* Path to this texture on disk or Qt resource. */
       const char * mPath {};
   };
-
 }  // namespace Qtk
 
 #endif  // QTOPENGL_TEXTURE_H

src/qtk/transform3D.cpp

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Transform3D class to represent object position in 3D space          ##
 ##        From following tutorials at trentreed.net                           ##
 ##                                                                            ##
@@ -16,7 +16,7 @@ const QVector3D Transform3D::LocalUp(0.0f, 1.0f, 0.0f);
 const QVector3D Transform3D::LocalRight(1.0f, 0.0f, 0.0f);
 
 /*******************************************************************************
- * Transformations
+ * Public Methods
  ******************************************************************************/
 
 void Transform3D::translate(const QVector3D & dt) {
@@ -29,19 +29,16 @@ void Transform3D::scale(const QVector3D & ds) {
   mScale *= ds;
 }
 
-void Transform3D::rotate(const QQuaternion & dr) {
-  m_dirty = true;
-  mRotation = dr * mRotation;
-}
 
 void Transform3D::grow(const QVector3D & ds) {
   m_dirty = true;
   mScale += ds;
 }
 
-/*******************************************************************************
+void Transform3D::rotate(const QQuaternion & dr) {
- * Setters
+  m_dirty = true;
- ******************************************************************************/
+  mRotation = dr * mRotation;
+}
 
 void Transform3D::setTranslation(const QVector3D & t) {
   m_dirty = true;
@@ -58,12 +55,6 @@ void Transform3D::setRotation(const QQuaternion & r) {
   mRotation = r;
 }
 
-/*******************************************************************************
- * Accessors
- ******************************************************************************/
-
-// Produces modelToWorld matrix using current set of transformations
-// Transformation * rotation * scale = modelToWorld
 const QMatrix4x4 & Transform3D::toMatrix() {
   if(m_dirty) {
     m_dirty = false;
@@ -75,10 +66,6 @@ const QMatrix4x4 & Transform3D::toMatrix() {
   return mWorld;
 }
 
-/*******************************************************************************
- * Queries
- ******************************************************************************/
-
 QVector3D Transform3D::getForward() const {
   return mRotation.rotatedVector(LocalForward);
 }
@@ -89,13 +76,10 @@ QVector3D Transform3D::getUp() const {
 
 QVector3D Transform3D::getRight() const {
   return mRotation.rotatedVector(LocalRight);
-  while(true) {
-    int xx;
-  };
 }
 
 /*******************************************************************************
- * QT Streams
+ * Private Methods
  ******************************************************************************/
 
 namespace Qtk {

src/qtk/transform3D.h

@@ -1,6 +1,6 @@
 /*##############################################################################
 ## Author: Shaun Reed                                                         ##
-## Legal: All Content (c) 2022 Shaun Reed, all rights reserved                ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
 ## About: Transform3D class to represent object position in 3D space          ##
 ##        From following tutorials at trentreed.net                           ##
 ##                                                                            ##
@@ -35,75 +35,154 @@ namespace Qtk {
           mTranslation(0.0f, 0.0f, 0.0f) {}
 
       /*************************************************************************
-       * Transformations
+       * Public Methods
        ************************************************************************/
 
+      /**
+       * @param dt Translation from last to current position.
+       */
       void translate(const QVector3D & dt);
 
+      /**
+       * @param dx X translation from last to current position.
+       * @param dy Y translation from last to current position.
+       * @param dz Z translation from last to current position.
+       */
       inline void translate(float dx, float dy, float dz) {
         translate(QVector3D(dx, dy, dz));
       }
 
-      // Scale object with multiplication
+      /**
+       * Scale the object size.
+       *
+       * @param ds Scalar vector to apply to the transform.
+       */
       void scale(const QVector3D & ds);
 
+      /**
+       * Scale the object size.
+       *
+       * @param dx Amount to scale on the X axis.
+       * @param dy Amount to scale on the Y axis.
+       * @param dz Amount to scale on the Z axis.
+       */
       inline void scale(float dx, float dy, float dz) {
         scale(QVector3D(dx, dy, dz));
       }
 
+      /**
+       * Scale the object size.
+       *
+       * @param factor Scalar to apply to all axis of the object.
+       */
       inline void scale(float factor) {
         scale(QVector3D(factor, factor, factor));
       }
 
-      // Multiplying by a rotation
+      /**
-      void rotate(const QQuaternion & dr);
+       * @param ds 3D vector to add to scale axis.
-
+       */
-      inline void rotate(float angle, const QVector3D & axis) {
-        rotate(QQuaternion::fromAxisAndAngle(axis, angle));
-      }
-
-      inline void rotate(float angle, float ax, float ay, float az) {
-        rotate(QQuaternion::fromAxisAndAngle(ax, ay, az, angle));
-      }
-
-      // Scale object by addition
       void grow(const QVector3D & ds);
 
+      /**
+       * @param dx Amount to grow X axis.
+       * @param dy Amount to grow Y axis.
+       * @param dz Amount to grow Z axis.
+       */
       inline void grow(float dx, float dy, float dz) {
         grow(QVector3D(dx, dy, dz));
       }
 
+      /**
+       * @param factor Amount to grow all axis equally.
+       */
       inline void grow(float factor) {
         grow(QVector3D(factor, factor, factor));
       }
 
+      /**
+       * @param dr Rotation to apply to the transform.
+       */
+      void rotate(const QQuaternion & dr);
+
+      /**
+       * @param angle Angle to rotate.
+       * @param axis Axis to rotate apply the rotation on.
+       */
+      inline void rotate(float angle, const QVector3D & axis) {
+        rotate(QQuaternion::fromAxisAndAngle(axis, angle));
+      }
+
+      /**
+       * Apply rotation upon an axis represented by the 3D vector (x, y, z)
+       *
+       * @param angle Angle to rotate.
+       * @param ax X axis to apply the rotation on.
+       * @param ay Y axis to apply the rotation on.
+       * @param az Z axis to apply the rotation on.
+       */
+      inline void rotate(float angle, float ax, float ay, float az) {
+        rotate(QQuaternion::fromAxisAndAngle(ax, ay, az, angle));
+      }
+
       /*************************************************************************
        * Setters
        ************************************************************************/
 
-      // Set object position
+      /**
+       * @param t Position to move the transform to.
+       */
       void setTranslation(const QVector3D & t);
 
+      /**
+       * @param x X position to set transform.
+       * @param y Y position to set transform.
+       * @param z Z position to set transform.
+       */
       inline void setTranslation(float x, float y, float z) {
         setTranslation(QVector3D(x, y, z));
       }
 
-      // Set object scale
+      /**
+       * @param s Scale to set for this transform.
+       */
       void setScale(const QVector3D & s);
 
+      /**
+       * @param x X axis scale to set for this transform.
+       * @param y Y axis scale to set for this transform.
+       * @param z Z axis scale to set for this transform.
+       */
       inline void setScale(float x, float y, float z) {
         setScale(QVector3D(x, y, z));
       }
 
+      /**
+       * @param k Scale to set for all axis on this transform.
+       */
       inline void setScale(float k) { setScale(QVector3D(k, k, k)); }
 
-      // Set object rotation
+      /**
+       * @param r Rotation to set for this transform.
+       */
       void setRotation(const QQuaternion & r);
 
+      /**
+       * @param angle Angle to set for rotation.
+       * @param axis Axis to set rotation for.
+       */
       inline void setRotation(float angle, const QVector3D & axis) {
         setRotation(QQuaternion::fromAxisAndAngle(axis, angle));
       }
 
+      /**
+       * Sets a rotation upon an axis represented by the 3D vector (x, y, z)
+       *
+       * @param angle Angle to set rotation.
+       * @param ax X axis to set angle for.
+       * @param ay Y axis to set angle for.
+       * @param az Z axis to set angle for.
+       */
       inline void setRotation(float angle, float ax, float ay, float az) {
         setRotation(QQuaternion::fromAxisAndAngle(ax, ay, az, angle));
       }
@@ -112,31 +191,55 @@ namespace Qtk {
        * Getters
        ************************************************************************/
 
+      /**
+       * @return Translation for this transform.
+       */
       [[nodiscard]] inline const QVector3D & getTranslation() const {
         return mTranslation;
       }
 
+      /**
+       * @return Scale for this transform.
+       */
       [[nodiscard]] inline const QVector3D & getScale() const { return mScale; }
 
+      /**
+       * @return Rotation for this transform.
+       */
       [[nodiscard]] inline const QQuaternion & getRotation() const {
         return mRotation;
       }
 
+      /**
+       * @return Model to world matrix for this transform.
+       *    transformation * rotation * scale = ModelToWorld
+       */
       const QMatrix4x4 & toMatrix();
 
+      /**
+       * @return Forward vector for this transform.
+       */
       [[nodiscard]] QVector3D getForward() const;
+
+      /**
+       * @return Up vector for this transform.
+       */
       [[nodiscard]] QVector3D getUp() const;
+
+      /**
+       * @return Right vector for this transform.
+       */
       [[nodiscard]] QVector3D getRight() const;
 
       /*************************************************************************
-       * Public members
+       * Public Members
        ************************************************************************/
 
       static const QVector3D LocalForward, LocalUp, LocalRight;
 
     private:
       /*************************************************************************
-       * Private members
+       * Private Members
        ************************************************************************/
 
       QVector3D mTranslation;
@@ -154,7 +257,6 @@ namespace Qtk {
 #endif
   };
 
-// Qt Streams
 #ifndef QT_NO_DEBUG_STREAM
   QDebug operator<<(QDebug dbg, const Transform3D & transform);
 #endif