old WIP code

.github/workflows/all-builds.yml

@@ -5,6 +5,9 @@ on:
   pull_request:
   workflow_dispatch:
 
+env:
+  QT_VERSION: 6.6.0
+
 jobs:
   Qtk:
     env:
@@ -15,13 +18,13 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         include:
           - os: ubuntu-latest
-            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/6.5.0/gcc_64/ $CONFIG
+            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/$QT_VERSION/gcc_64/ $CONFIG
             flags: -j $(nproc)
           - os: windows-latest
-            cmake: -DCMAKE_PREFIX_PATH=D:/a/qtk/qtk/Qt/6.5.0/mingw81_64/ $CONFIG
+            cmake: -DCMAKE_PREFIX_PATH=D:/a/qtk/qtk/Qt/$QT_VERSION/mingw81_64/ $CONFIG
             flags: ''
           - os: macos-latest
-            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/6.5.0/gcc_64/ $CONFIG
+            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/$QT_VERSION/gcc_64/ $CONFIG
             flags: -j $(nproc)
 
     runs-on: ${{ matrix.os }}
@@ -31,7 +34,7 @@ jobs:
       - name: Install Qt
         uses: jurplel/install-qt-action@v2
         with:
-          version: '6.5.0'
+          version: ${{ env.QT_VERSION }}
 
       # Windows
 
@@ -118,7 +121,7 @@ jobs:
       - name: Upload Qtk install directory
         uses: actions/upload-artifact@v3
         with:
-          name: qtk-gui-${{ matrix.os }}-installdir
+          name: qtk-gui-${{ matrix.os }}-install
           path: install/*
 
 # TODO: Enable after trimming resources.
@@ -145,13 +148,13 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         include:
           - os: ubuntu-latest
-            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/6.5.0/gcc_64/ $CONFIG
+            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/$QT_VERSION/gcc_64/ $CONFIG
             flags: -j $(nproc)
           - os: windows-latest
-            cmake: -DCMAKE_PREFIX_PATH=D:/a/qtk/qtk/Qt/6.5.0/mingw81_64/ $CONFIG
+            cmake: -DCMAKE_PREFIX_PATH=D:/a/qtk/qtk/Qt/$QT_VERSION/mingw81_64/ $CONFIG
             flags: ''
           - os: macos-latest
-            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/6.5.0/gcc_64/ $CONFIG
+            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/$QT_VERSION/gcc_64/ $CONFIG
             flags: -j $(nproc)
 
     runs-on: ${{ matrix.os }}
@@ -161,7 +164,7 @@ jobs:
       - name: Install Qt
         uses: jurplel/install-qt-action@v2
         with:
-          version: '6.5.0'
+          version: ${{ env.QT_VERSION }}
 
       # Windows
 
@@ -238,7 +241,7 @@ jobs:
         uses: actions/upload-artifact@v3
         if: always()
         with:
-          name: libqtk-${{ matrix.os }}-installdir
+          name: libqtk-${{ matrix.os }}-install
           path: install/*
 
   Qtk-Plugins:
@@ -250,13 +253,13 @@ jobs:
         os: [ubuntu-latest, windows-latest, macos-latest]
         include:
           - os: ubuntu-latest
-            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/6.5.0/gcc_64/ $CONFIG
+            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/$QT_VERSION/gcc_64/ $CONFIG
             flags: -j $(nproc)
           - os: windows-latest
-            cmake: -DCMAKE_PREFIX_PATH=D:/a/qtk/qtk/Qt/6.5.0/mingw81_64/ $CONFIG
+            cmake: -DCMAKE_PREFIX_PATH=D:/a/qtk/qtk/Qt/$QT_VERSION/mingw81_64/ $CONFIG
             flags: ''
           - os: macos-latest
-            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/6.5.0/gcc_64/ $CONFIG
+            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/$QT_VERSION/gcc_64/ $CONFIG
             flags: -j $(nproc)
 
     runs-on: ${{ matrix.os }}
@@ -266,7 +269,7 @@ jobs:
       - name: Install Qt
         uses: jurplel/install-qt-action@v2
         with:
-          version: '6.5.0'
+          version: ${{ env.QT_VERSION }}
 
       - name: Chocolatey Action
         if: matrix.os == 'windows-latest'
@@ -295,9 +298,9 @@ jobs:
         os: [ubuntu-latest, macos-latest]
         include:
           - os: ubuntu-latest
-            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/6.5.0/gcc_64/
+            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/$QT_VERSION/gcc_64/
           - os: macos-latest
-            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/6.5.0/gcc_64/ -DASSIMP_NEW_INTERFACE=ON
+            cmake: -DCMAKE_PREFIX_PATH=/home/runner/work/qtk/Qt/$QT_VERSION/gcc_64/
 
     runs-on: ${{ matrix.os }}
     steps:
@@ -306,7 +309,7 @@ jobs:
       - name: Install Qt
         uses: jurplel/install-qt-action@v2
         with:
-          version: '6.5.0'
+          version: ${{ env.QT_VERSION }}
 
       - name: Install Assimp MacOS
         if: matrix.os == 'macos-latest'
@@ -322,7 +325,7 @@ jobs:
 
       - name: Configure Qtk
         shell: bash
-        run: cmake -B build/ ${{ matrix.cmake }} -DQTK_CCACHE=OFF
+        run: cmake -B build/ ${{ matrix.cmake }} -DQTK_CCACHE=OFF -DQTK_ASSIMP_NEW_INTERFACE=ON
 
       - name: Build Qtk
         shell: bash

.gitignore

@@ -1,6 +1,9 @@
 # CLion
 **/.idea/**
 
+# VS Code
+**/.vscode/**
+
 # CMake build files
 **/cmake-build-debug/**
 **/build/**

CMakeLists.txt

@@ -67,7 +67,7 @@ option(
     OFF
 )
 
-if(QTK_DEBUG OR CMAKE_BUILD_TYPE MATCHES "[Dd][Ee][Bb][Uu][Gg]")
+if(QTK_DEBUG OR CMAKE_BUILD_TYPE MATCHES "^[Dd][Ee][Bb][Uu][Gg]$")
   set(QTK_DEBUG ON)
   set(CMAKE_BUILD_TYPE Debug)
 else()
@@ -84,18 +84,30 @@ endif ()
 set(QTK_RESOURCES "${CMAKE_SOURCE_DIR}/resources")
 set(QTK_OSX_ICONS ${CMAKE_SOURCE_DIR}/resources/icons/osx/kilroy.icns)
 
+# Point CMAKE_PREFIX_PATH to Qt6 install directory
+# If Qtk is built within Qt Creator this is not required.
+list(APPEND CMAKE_PREFIX_PATH "${QT_INSTALL_DIR}")
+if (QTK_PREFIX_QTCREATOR)
+  # TODO: This might be a bit strange and needs more testing.
+  set(CMAKE_INSTALL_PREFIX  "${QT_INSTALL_DIR}")
+endif()
+
+set(
+    QT_CREATOR_DIR
+    "${QT_INSTALL_DIR}/../../Tools/QtCreator"
+    CACHE PATH "Qt Creator path used to install Qtk plugins for Qt Designer."
+)
+
 # Print all QTK options and their values at the end of configuration.
+# We initialize this list here so that we can append to it as needed.
+# All variables in this list will be printed at the end of configuration.
 get_cmake_property(VAR_NAMES VARIABLES)
-list(FILTER VAR_NAMES INCLUDE REGEX "^Q[tT][kK]_.*$")
+list(FILTER VAR_NAMES INCLUDE REGEX "^[qQ][tT][kK]_.*$")
 list(SORT VAR_NAMES)
 
 ################################################################################
 # External Dependencies
 ################################################################################
-# Point CMAKE_PREFIX_PATH to Qt6 install directory
-# If Qtk is built within Qt Creator this is not required.
-list(APPEND CMAKE_PREFIX_PATH "${QT_INSTALL_DIR}")
-
 # Find Qt
 find_package(Qt6 COMPONENTS Core UiPlugin OpenGLWidgets)
 qt_standard_project_setup()
@@ -111,12 +123,6 @@ if(NOT Qt6_FOUND)
   )
 endif()
 
-# TODO: This might be a bit strange and needs more testing.
-if (QTK_PREFIX_QTCREATOR)
-  set(CMAKE_INSTALL_PREFIX  "${QT_INSTALL_DIR}")
-endif()
-
-
 #
 # To use custom plugins, set QT_PLUGIN_PATH environment variable before running designer
 # Or, we can install plugins to the designer for use across all projects.
@@ -137,8 +143,10 @@ set(
 set(
   VAR_PATHS
    CMAKE_PREFIX_PATH CMAKE_INSTALL_PREFIX QTK_PLUGIN_INSTALL_DIR QT6_INSTALL_PREFIX
-   QT_INSTALL_DIR QT6_INSTALL_PLUGINS
+   QT_INSTALL_DIR
 )
+# Add QT6_INSTALL_PLUGINS to VAR_NAMES so it is printed at end of configuration.
+list(APPEND VAR_NAMES QT6_INSTALL_PLUGINS)
 
 # Find Assimp.
 if(QTK_SUBMODULES)
@@ -179,6 +187,8 @@ if(QTK_EXAMPLE)
   add_subdirectory(example-app EXCLUDE_FROM_ALL)
 endif()
 
+# Print all QTK options and their values at the end of configuration. This also
+# prints any additional variables that we have added to VAR_NAMES and VAR_PATHS.
 foreach(VAR_NAME IN LISTS VAR_NAMES VAR_PATHS)
   if(VAR_NAME IN_LIST VAR_PATHS)
     # Print absolute if variable is path

README.md

@@ -40,26 +40,26 @@ and [Qt Creator](https://github.com/qt-creator/qt-creator).
 Simply open the root `CMakeLists.txt` with either of these editors and
 configurations will be loaded.
 
-This project has been ported to **Qt 6.5.0**, which is not yet available in
+This project has been ported to **Qt 6.6.0**, which is not yet available in
 Ubuntu apt repositories.
 To run this project, you will *need* to
 install [Qt6 Open Source Binaries](https://www.qt.io/download-qt-installer) for
-your system, **version 6.5.0** or later.
+your system, **version 6.6.0** or later.
 Be sure to take note of the Qt6 installation directory, as we will need it to
 correctly set our `CMAKE_PREFIX_PATH` in the next steps.
 
 If you are building on **Windows / Mac**, consider setting
-the `-DASSIMP_NEW_INTERFACE` build flag.
+the `-DQTK_ASSIMP_NEW_INTERFACE` cmake build option.
 
 If the build is configured with all options enabled, we can subsequently install
 individual components as needed with cmake.
 
 ```bash
-sudo apt update -y && sudo apt install libassimp-dev cmake build-essential git ccache libgl1-mesa-dev libglvnd-dev -y
+sudo apt update -y && sudo apt install libassimp-dev cmake build-essential git ccache libgl1-mesa-dev libglvnd-dev zlib1g-dev -y
 git clone https://github.com/shaunrd0/qtk
 cd qtk
 # Configure the build with all components enabled
-cmake -B build-all -DQTK_GUI=ON -DQTK_PLUGINS=ON -DQTK_EXAMPLE=ON -DCMAKE_PREFIX_PATH=$HOME/Qt/6.5.0/gcc_64
+cmake -B build-all -DQTK_GUI=ON -DQTK_PLUGINS=ON -DQTK_EXAMPLE=ON -DCMAKE_PREFIX_PATH=$HOME/Qt/6.6.0/gcc_64
 # Build all targets
 cmake --build build-all/
 ````
@@ -75,7 +75,7 @@ Windows / Mac / Linux) and may be easier
 to configure.
 
 ```bash
-cmake -B build-all -DQTK_GUI=ON -DQTK_PLUGINS=ON -DQTK_EXAMPLE=ON -DQTK_SUBMODULES=ON -DCMAKE_PREFIX_PATH=$HOME/Qt/6.5.0/gcc_64
+cmake -B build-all -DQTK_GUI=ON -DQTK_PLUGINS=ON -DQTK_EXAMPLE=ON -DQTK_SUBMODULES=ON -DCMAKE_PREFIX_PATH=$HOME/Qt/6.6.0/gcc_64
 ```
 
 #### Qtk GUI
@@ -149,9 +149,9 @@ cmake --build build-all/ --target qtk_plugins -- -j $(nproc)
 # The path here should be initialized during build configuration, so no need for --prefix
 cmake --install build-all/ --component qtk_plugins
 -- Install configuration: "Release"
--- Up-to-date: /home/shaun/Qt/6.5.0/gcc_64/../../Tools/QtCreator/lib/Qt/lib/libqtk_library.a
+-- Up-to-date: /home/shaun/Qt/6.6.0/gcc_64/../../Tools/QtCreator/lib/Qt/lib/libqtk_library.a
--- Up-to-date: /home/shaun/Qt/6.5.0/gcc_64/../../Tools/QtCreator/lib/Qt/lib/libqtk_plugin_library.a
+-- Up-to-date: /home/shaun/Qt/6.6.0/gcc_64/../../Tools/QtCreator/lib/Qt/lib/libqtk_plugin_library.a
--- Up-to-date: /home/shaun/Qt/6.5.0/gcc_64/../../Tools/QtCreator/lib/Qt/plugins/designer/libqtk_collection.so
+-- Up-to-date: /home/shaun/Qt/6.6.0/gcc_64/../../Tools/QtCreator/lib/Qt/plugins/designer/libqtk_collection.so
 ```
 
 To uninstall after a previous installation, we can run the following command

example-app/examplescene.cpp

@@ -13,8 +13,8 @@ using namespace Qtk;
 
 ExampleScene::ExampleScene(Qtk::Scene * scene) : Qtk::SceneInterface(scene) {
   setSceneName("Example Scene");
-  getCamera().getTransform().setTranslation(-8.0f, 0.0f, 10.0f);
+  getCamera().setTranslation({-8.0f, 0.0f, 10.0f});
-  getCamera().getTransform().setRotation(-5.0f, 0.0f, 1.0f, 0.0f);
+  getCamera().setRotation(0.0f, 1.0f, 0.0f, -5.0f);
 }
 
 ExampleScene::~ExampleScene() {}
@@ -23,9 +23,9 @@ void ExampleScene::init() {
   auto skybox = new Qtk::Skybox("Skybox");
   setSkybox(skybox);
 
-  auto spartan = new Model(
+  std::string spartanPath = QTK_EXAMPLE_SOURCE_DIR;
-      "spartan", std::string(QTK_EXAMPLE_SOURCE_DIR)
+  spartanPath += "/resources/models/spartan/spartan.obj";
-                     + "/../resources/models/spartan/spartan.obj");
+  auto spartan = new Model("spartan", spartanPath.c_str());
   addObject(spartan);
   spartan->getTransform().setTranslation(-4.0f, 0.0f, 0.0f);
 
@@ -64,10 +64,10 @@ void ExampleScene::update() {
   // Pitch forward and roll sideways
   MeshRenderer::getInstance("leftTriangle")
       ->getTransform()
-      .rotate(0.75f, 1.0f, 0.0f, 0.0f);
+      .rotate(1.0f, 0.0f, 0.0f, 0.75f);
   MeshRenderer::getInstance("rightTriangle")
       ->getTransform()
-      .rotate(0.75f, 0.0f, 0.0f, 1.0f);
+      .rotate(0.0f, 0.0f, 1.0f, 0.75f);
 
   static float translateX = 0.025f;
   float limit = -9.0f;  // Origin position.x - 2.0f
@@ -86,12 +86,12 @@ void ExampleScene::update() {
       .translate(-translateX, 0.0f, 0.0f);
   MeshRenderer::getInstance("topTriangle")
       ->getTransform()
-      .rotate(0.75f, 0.2f, 0.0f, 0.4f);
+      .rotate(0.2f, 0.0f, 0.4f, 0.75f);
   MeshRenderer::getInstance("bottomTriangle")
       ->getTransform()
-      .rotate(0.75f, 0.0f, 0.2f, 0.4f);
+      .rotate(0.0f, 0.2f, 0.4f, 0.75f);
 
   MeshRenderer::getInstance("centerCube")
       ->getTransform()
-      .rotate(0.75f, 0.2f, 0.4f, 0.6f);
+      .rotate(0.2f, 0.4f, 0.6f, 0.75f);
 }

example-app/resources.h.in

@@ -1,6 +1,6 @@
 #ifndef QTK_RESOURCES_H_IN_H
 #define QTK_RESOURCES_H_IN_H
 
-#define QTK_EXAMPLE_SOURCE_DIR "@CMAKE_CURRENT_SOURCE_DIR@"
+#define QTK_EXAMPLE_SOURCE_DIR "@CMAKE_SOURCE_DIR@"
 
 #endif  // QTK_RESOURCES_H_IN_H

resources/resources.qrc

@@ -1,5 +1,6 @@
 <RCC>
     <qresource prefix="/textures">
+        <file alias="plaster.png">images/plaster.png</file>
         <file alias="crate.png">images/crate.png</file>
         <file alias="stone.png">images/stone.png</file>
         <file alias="wood.png">images/wood.png</file>

src/CMakeLists.txt

@@ -32,7 +32,7 @@ install(
     FILE_SET HEADERS DESTINATION include
     INCLUDES DESTINATION include
     LIBRARY DESTINATION lib
-    ARCHIVE DESTINATION lib/static
+    ARCHIVE DESTINATION lib
     RUNTIME DESTINATION bin
 )
 
@@ -57,7 +57,7 @@ if(QTK_GUI)
       COMPONENT qtk_gui
       BUNDLE DESTINATION .
       LIBRARY DESTINATION lib
-      ARCHIVE DESTINATION lib/static
+      ARCHIVE DESTINATION lib
       RUNTIME DESTINATION bin
   )
 

src/app/CMakeLists.txt

@@ -47,13 +47,13 @@ target_link_libraries(qtk_plugins PUBLIC qtk_plugin_library)
 ################################################################################
 # Final Qtk Application
 ################################################################################
-
+# Source files for the main window and core application
 set(
     QTK_GUI_SOURCES
     qtkscene.cpp qtkscene.h
+#    logger.cpp logger.h
     main.cpp
 )
-
 qt_add_executable(qtk_gui ${QTK_GUI_SOURCES})
 target_link_libraries(qtk_gui PRIVATE qtk_plugin_library)
 

src/app/debugconsole.cpp

@@ -28,6 +28,7 @@ DebugConsole::DebugConsole(
 
   auto qtkWidget = dynamic_cast<QtkWidget *>(owner);
   if(qtkWidget) {
-    connect(qtkWidget, &QtkWidget::sendLog, this, &DebugConsole::sendLog);
+    connect(
+        qtkWidget->getLogger(), &Logger::sendLog, this, &DebugConsole::sendLog);
   }
 }

src/app/debugconsole.h

@@ -61,7 +61,8 @@ namespace Qtk {
        * @param context The DebugContext to use for the message.
        *    Default value is Status.
        */
-      inline void sendLog(QString message, DebugContext context = Status) {
+      inline void sendLog(QString message, Qtk::DebugContext context = Status) {
+//        qDebug() << "[LOGGER]: " << qPrintable(message) << "; LOGGER";
         mConsole->setTextColor(logColor(context));
         mConsole->append(logPrefix(message, context));
       }

src/app/logger.cpp

@@ -0,0 +1,107 @@
+/*##############################################################################
+## Author: Shaun Reed                                                         ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
+## About: Logger for Qtk                                                      ##
+##                                                                            ##
+## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
+##############################################################################*/
+
+#include "logger.h"
+#include "qtkwidget.h"
+
+using namespace Qtk;
+
+Logger::Logger(Qtk::QtkWidget * parent) : QObject(parent) {
+  //  connect(
+  //      this, SIGNAL(sendLog(QString, Qtk::DebugContext)), this,
+  //      SLOT(log(QString, Qtk::DebugContext)));
+  if(parent != Q_NULLPTR) {
+    connect(
+        parent, SIGNAL(sendLog(QString, Qtk::DebugContext)), this,
+        SLOT(log(QString, Qtk::DebugContext)));
+  }
+}
+
+std::pair<QString, DebugContext> Logger::log(const QOpenGLDebugMessage & msg) {
+  QString error_msg;
+  DebugContext context;
+
+  // Format based on severity
+  switch(msg.severity()) {
+    case QOpenGLDebugMessage::NotificationSeverity:
+      error_msg += "--";
+      context = Status;
+      break;
+    case QOpenGLDebugMessage::HighSeverity:
+      error_msg += "!!";
+      context = Fatal;
+      break;
+    case QOpenGLDebugMessage::MediumSeverity:
+      error_msg += "!~";
+      context = Error;
+      break;
+    case QOpenGLDebugMessage::LowSeverity:
+      error_msg += "~~";
+      context = Warn;
+      break;
+    case QOpenGLDebugMessage::InvalidSeverity:
+      error_msg += "??";
+      context = Invalid;
+      break;
+    case QOpenGLDebugMessage::AnySeverity:
+      error_msg += "**";
+      context = Any;
+      break;
+  }
+
+  error_msg += " (";
+
+  // Format based on source
+#define CASE(c)                \
+  case QOpenGLDebugMessage::c: \
+    error_msg += #c;           \
+    break
+  switch(msg.source()) {
+    CASE(APISource);
+    CASE(WindowSystemSource);
+    CASE(ShaderCompilerSource);
+    CASE(ThirdPartySource);
+    CASE(ApplicationSource);
+    CASE(OtherSource);
+    CASE(InvalidSource);
+    CASE(AnySource);
+  }
+#undef CASE
+
+  error_msg += " : ";
+
+// Format based on type
+#define CASE(c)                \
+  case QOpenGLDebugMessage::c: \
+    error_msg += #c;           \
+    break
+  switch(msg.type()) {
+    CASE(InvalidType);
+    CASE(ErrorType);
+    CASE(DeprecatedBehaviorType);
+    CASE(UndefinedBehaviorType);
+    CASE(PortabilityType);
+    CASE(PerformanceType);
+    CASE(OtherType);
+    CASE(MarkerType);
+    CASE(GroupPushType);
+    CASE(GroupPopType);
+    CASE(AnyType);
+  }
+#undef CASE
+
+  error_msg += ")\n" + msg.message();
+  log(error_msg, context);
+  return {error_msg, context};
+}
+
+void Logger::log(const QString & message, DebugContext context) {
+  const QString log_msg = "[LOGGER]: " + message + "; LOGGER";
+  qDebug() << qPrintable(log_msg);
+  emit sendLog(log_msg, context);
+}

src/app/logger.h

@@ -0,0 +1,37 @@
+/*##############################################################################
+## Author: Shaun Reed                                                         ##
+## Legal: All Content (c) 2023 Shaun Reed, all rights reserved                ##
+## About: Logger for Qtk                                                      ##
+##                                                                            ##
+## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
+##############################################################################*/
+
+#ifndef QTK_LOGGER_H
+#define QTK_LOGGER_H
+
+#include <QOpenGLDebugMessage>
+#include <QString>
+#include "qtk/qtkapi.h"
+namespace Qtk {
+  class QtkWidget;
+
+  class Logger : public QObject {
+      Q_OBJECT
+
+    public:
+      explicit Logger(Qtk::QtkWidget * parent = nullptr);
+
+    public slots:
+      std::pair<QString, DebugContext> log(
+          const QOpenGLDebugMessage & msg);
+
+      void log(
+          const QString & message,
+          Qtk::DebugContext context = Qtk::DebugContext::Status);
+
+    signals:
+      void sendLog(const QString & message, Qtk::DebugContext context);
+  };
+}  // namespace Qtk
+
+#endif  // QTK_LOGGER_H

src/app/qtkmainwindow.cpp

@@ -29,17 +29,30 @@ MainWindow::MainWindow(QWidget * parent) : QMainWindow(parent) {
   for(auto & qtkWidget : qtkWidgets) {
     qtkWidget->setScene(new Qtk::SceneEmpty);
     views_.emplace(qtkWidget->getScene()->getSceneName(), qtkWidget);
+
+    // Add GUI 'view' toolbar option to show debug console.
     ui_->menuView->addAction(qtkWidget->getActionToggleConsole());
+    // Refresh GUI widgets when scene or objects are updated.
     connect(
         qtkWidget->getScene(), &Qtk::Scene::sceneUpdated, this,
         &MainWindow::refreshScene);
+    connect(
+        qtkWidget, &Qtk::QtkWidget::objectFocusChanged, ui_->qtk__ToolBox,
+        &Qtk::ToolBox::updateFocus);
   }
 
-  auto docks = findChildren<QDockWidget *>();
+  // TODO: Fix / use MainWindow in Qt Designer to add these dock widgets.
-  for(auto & dock : docks) {
+  // For now we will add them manually, but we should be able to do this in the
-    addDockWidget(Qt::RightDockWidgetArea, dock);
+  // designer. At the moment if you edit the UI in designer the dock widget
-    ui_->menuView->addAction(dock->toggleViewAction());
+  // areas below will override the designer settings.
-  }
+
+  // Dock the toolbox widget to the main window.
+  addDockWidget(Qt::LeftDockWidgetArea, ui_->qtk__ToolBox);
+  // Add an option to toggle active widgets in the GUI's toolbar 'view' menu.
+  ui_->menuView->addAction(ui_->qtk__ToolBox->toggleViewAction());
+
+  addDockWidget(Qt::RightDockWidgetArea, ui_->qtk__TreeView);
+  ui_->menuView->addAction(ui_->qtk__TreeView->toggleViewAction());
 
   // Set the window icon used for Qtk.
   setWindowIcon(Qtk::getIcon());
@@ -74,7 +87,7 @@ Qtk::QtkWidget * MainWindow::getQtkWidget(const QString & name) {
   return views_[name];
 }
 
-void MainWindow::refreshScene(QString sceneName) {
+void MainWindow::refreshScene(const QString & sceneName) {
-  // TODO: Select TreeView using sceneName>
+  // TODO: Select TreeView using sceneName
   ui_->qtk__TreeView->updateView(getQtkWidget()->getScene());
 }

src/app/qtkmainwindow.h

@@ -69,7 +69,7 @@ class MainWindow : public QMainWindow {
      * 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);
+    void refreshScene(const QString & sceneName);
 
   private:
     /***************************************************************************

src/app/qtkmainwindow.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>824</width>
+    <width>1034</width>
     <height>601</height>
    </rect>
   </property>
@@ -28,11 +28,27 @@
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QHBoxLayout" name="horizontalLayout">
+    <item>
+     <widget class="Qtk::ToolBox" name="qtk::ToolBox">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+        <horstretch>1</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <property name="toolTip">
+       <string>Object details and configuration panel.</string>
+      </property>
+      <property name="whatsThis">
+       <string>When an object is double-clicked in the TreeView for a scene, this panel will display relevant details and options.</string>
+      </property>
+     </widget>
+    </item>
     <item>
      <widget class="QTabWidget" name="tabWidget">
       <property name="sizePolicy">
        <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
-        <horstretch>0</horstretch>
+        <horstretch>3</horstretch>
         <verstretch>0</verstretch>
        </sizepolicy>
       </property>
@@ -50,10 +66,10 @@
         <item>
          <widget class="Qtk::QtkWidget" name="qtk::QtkWidget">
           <property name="toolTip">
-           <string>A custom widget tool tip.</string>
+           <string/>
           </property>
           <property name="whatsThis">
-           <string>Custom widget what's this?</string>
+           <string>Qtk scene view rendered using OpenGL.</string>
           </property>
          </widget>
         </item>
@@ -67,28 +83,20 @@
      </widget>
     </item>
     <item>
-     <layout class="QVBoxLayout" name="verticalLayout">
+     <widget class="Qtk::TreeView" name="qtk::TreeView">
-      <item>
+      <property name="sizePolicy">
-       <widget class="Qtk::TreeView" name="qtk::TreeView">
+       <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
-        <property name="toolTip">
+        <horstretch>1</horstretch>
-         <string>A custom widget tool tip.</string>
+        <verstretch>0</verstretch>
-        </property>
+       </sizepolicy>
-        <property name="whatsThis">
+      </property>
-         <string>Custom widget what's this?</string>
+      <property name="toolTip">
-        </property>
+       <string>TreeView of objects within the current scene.</string>
-       </widget>
+      </property>
-      </item>
+      <property name="whatsThis">
-      <item>
+       <string>TreeView of objects within the current scene. Double-click to select an object and snap to it's position.</string>
-       <widget class="Qtk::ToolBox" name="qtk::ToolBox">
+      </property>
-        <property name="toolTip">
+     </widget>
-         <string>A custom widget tool tip.</string>
-        </property>
-        <property name="whatsThis">
-         <string>Custom widget what's this?</string>
-        </property>
-       </widget>
-      </item>
-     </layout>
     </item>
    </layout>
   </widget>
@@ -97,7 +105,7 @@
     <rect>
      <x>0</x>
      <y>0</y>
-     <width>824</width>
+     <width>1034</width>
      <height>22</height>
     </rect>
    </property>
@@ -179,7 +187,7 @@
   </widget>
   <action name="actionOpen">
    <property name="icon">
-    <iconset resource="../../resources/resources.qrc">
+    <iconset>
      <normaloff>:/icons/fontawesome-free-6.2.1-desktop/svgs/regular/folder-open.svg</normaloff>:/icons/fontawesome-free-6.2.1-desktop/svgs/regular/folder-open.svg</iconset>
    </property>
    <property name="text">
@@ -188,7 +196,7 @@
   </action>
   <action name="actionSave">
    <property name="icon">
-    <iconset resource="../../resources/resources.qrc">
+    <iconset>
      <normaloff>:/icons/fontawesome-free-6.2.1-desktop/svgs/regular/floppy-disk.svg</normaloff>:/icons/fontawesome-free-6.2.1-desktop/svgs/regular/floppy-disk.svg</iconset>
    </property>
    <property name="text">
@@ -215,7 +223,7 @@
   </action>
   <action name="actionLoad_Model">
    <property name="icon">
-    <iconset resource="../../resources/resources.qrc">
+    <iconset>
      <normaloff>:/icons/fontawesome-free-6.2.1-desktop/svgs/solid/cube.svg</normaloff>:/icons/fontawesome-free-6.2.1-desktop/svgs/solid/cube.svg</iconset>
    </property>
    <property name="text">
@@ -227,7 +235,7 @@
   </action>
   <action name="actionDelete_Object">
    <property name="icon">
-    <iconset resource="../../resources/resources.qrc">
+    <iconset>
      <normaloff>:/icons/fontawesome-free-6.2.1-desktop/svgs/regular/trash-can.svg</normaloff>:/icons/fontawesome-free-6.2.1-desktop/svgs/regular/trash-can.svg</iconset>
    </property>
    <property name="text">
@@ -318,9 +326,7 @@
    <container>1</container>
   </customwidget>
  </customwidgets>
- <resources>
+ <resources/>
-  <include location="../../resources/resources.qrc"/>
- </resources>
  <connections>
   <connection>
    <sender>actionExit</sender>

src/app/qtkscene.cpp

@@ -16,8 +16,9 @@ using namespace Qtk;
 
 QtkScene::QtkScene(Qtk::Scene * scene) : Qtk::SceneInterface(scene) {
   setSceneName("Qtk Scene");
-  getCamera().getTransform().setTranslation(0.0f, 0.0f, 20.0f);
+  getCamera().setTranslation({0.0f, 0.0f, 20.0f});
-  getCamera().getTransform().setRotation(-5.0f, 0.0f, 1.0f, 0.0f);
+  getCamera().setRotation(
+      QQuaternion::fromAxisAndAngle(0.0f, 1.0f, 0.0f, -5.0f));
 }
 
 QtkScene::~QtkScene() {
@@ -38,11 +39,12 @@ void QtkScene::init() {
   /* Create a red cube with a mini master chief on top. */
   auto myCube = new MeshRenderer("My cube", Cube(Qtk::QTK_DRAW_ELEMENTS));
   myCube->setColor(RED);
+  myCube->getTransform().setTranslation(5.0f, 0.0f, 0.0f);
   addObject(myCube);
 
   auto mySpartan =
       new Model("My spartan", ":/models/models/spartan/spartan.obj");
-  mySpartan->getTransform().setTranslation(0.0f, 0.5f, 0.0f);
+  mySpartan->getTransform().setTranslation(5.0f, 0.5f, 0.0f);
   mySpartan->getTransform().setScale(0.5f);
   addObject(mySpartan);
 
@@ -88,7 +90,7 @@ void QtkScene::init() {
   model->getTransform().setTranslation(2.0f, 2.0f, -10.0f);
   // Sometimes the models are very large
   model->getTransform().scale(0.0025f);
-  model->getTransform().rotate(-110.0f, 0.0f, 1.0f, 0.0f);
+  model->getTransform().rotate(0.0f, 1.0f, 0.0f, -110.0f);
 
   model = addObject(
       new Qtk::Model("alien", ":/models/models/alien-hominid/alien.obj"));
@@ -98,8 +100,8 @@ void QtkScene::init() {
   model = addObject(
       new Qtk::Model("My scythe", ":/models/models/scythe/scythe.obj"));
   model->getTransform().setTranslation(-6.0f, 0.0f, -10.0f);
-  model->getTransform().rotate(-90.0f, 1.0f, 0.0f, 0.0f);
+  model->getTransform().rotate(1.0f, 0.0f, 0.0f, -90.0f);
-  model->getTransform().rotate(90.0f, 0.0f, 1.0f, 0.0f);
+  model->getTransform().rotate(0.0f, 1.0f, 0.0f, 90.0f);
 
   model = addObject(
       new Qtk::Model("masterChief", ":/models/models/spartan/spartan.obj"));
@@ -330,14 +332,14 @@ void QtkScene::init() {
   mesh->reallocateNormals(mesh->getNormals());
   mesh->reallocateTexCoords(mesh->getTexCoords(), 3);
   mesh->releaseShaders();
-  mesh->getTransform().rotate(45.0f, 0.0f, 1.0f, 0.0f);
+  mesh->getTransform().rotate(0.0f, 1.0f, 0.0f, 45.0f);
 
   // Texturing a cube using a cube map
   // + Cube map texturing works with both QTK_DRAW_ARRAYS and QTK_DRAW_ELEMENTS
   mesh =
       addObject(new Qtk::MeshRenderer("testCubeMap", Cube(QTK_DRAW_ELEMENTS)));
   mesh->getTransform().setTranslation(-3.0f, 1.0f, -2.0f);
-  mesh->getTransform().setRotation(45.0f, 0.0f, 1.0f, 0.0f);
+  mesh->getTransform().setRotation(0.0f, 1.0f, 0.0f, 45.0f);
   mesh->setShaders(
       ":/shaders/texture-cubemap.vert", ":/shaders/texture-cubemap.frag");
   mesh->setCubeMap(":/textures/crate.png");
@@ -438,10 +440,10 @@ void QtkScene::draw() {
 
 void QtkScene::update() {
   auto mySpartan = Model::getInstance("My spartan");
-  mySpartan->getTransform().rotate(0.75f, 0.0f, 1.0f, 0.0f);
+  mySpartan->getTransform().rotate(0.0f, 1.0f, 0.0f, 0.75f);
 
   auto myCube = MeshRenderer::getInstance("My cube");
-  myCube->getTransform().rotate(-0.75f, 0.0f, 1.0f, 0.0f);
+  myCube->getTransform().rotate(-0.0f, 1.0f, 0.0f, 0.75f);
 
   auto position = MeshRenderer::getInstance("alienTestLight")
                       ->getTransform()
@@ -455,7 +457,7 @@ void QtkScene::update() {
   alien->setUniform("uMVP.model", posMatrix);
   alien->setUniform("uMVP.view", QtkScene::getCamera().toMatrix());
   alien->setUniform("uMVP.projection", QtkScene::getProjectionMatrix());
-  alien->getTransform().rotate(0.75f, 0.0f, 1.0f, 0.0f);
+  alien->getTransform().rotate(0.0f, 1.0f, 0.0f, 0.75f);
 
   position = MeshRenderer::getInstance("spartanTestLight")
                  ->getTransform()
@@ -469,10 +471,10 @@ void QtkScene::update() {
   spartan->setUniform("uMVP.model", posMatrix);
   spartan->setUniform("uMVP.view", QtkScene::getCamera().toMatrix());
   spartan->setUniform("uMVP.projection", QtkScene::getProjectionMatrix());
-  spartan->getTransform().rotate(0.75f, 0.0f, 1.0f, 0.0f);
+  spartan->getTransform().rotate(0.0f, 1.0f, 0.0f, 0.75f);
 
   auto phong = MeshRenderer::getInstance("testPhong");
-  phong->getTransform().rotate(0.75f, 1.0f, 0.5f, 0.0f);
+  phong->getTransform().rotate(1.0f, 0.5f, 0.0f, 0.75f);
   phong->bindShaders();
   position =
       MeshRenderer::getInstance("testLight")->getTransform().getTranslation();
@@ -487,27 +489,27 @@ void QtkScene::update() {
   phong->releaseShaders();
 
   // Rotate lighting example cubes
-  mTestPhong->getTransform().rotate(0.75f, 0.5f, 0.3f, 0.2f);
+  mTestPhong->getTransform().rotate(0.5f, 0.3f, 0.2f, 0.75f);
   MeshRenderer::getInstance("noLight")->getTransform().rotate(
-      0.75f, 0.5f, 0.3f, 0.2f);
+      0.5f, 0.3f, 0.2f, 0.75f);
-  mTestAmbient->getTransform().rotate(0.75f, 0.5f, 0.3f, 0.2f);
+  mTestAmbient->getTransform().rotate(0.5f, 0.3f, 0.2f, 0.75f);
-  mTestDiffuse->getTransform().rotate(0.75f, 0.5f, 0.3f, 0.2f);
+  mTestDiffuse->getTransform().rotate(0.5f, 0.3f, 0.2f, 0.75f);
-  mTestSpecular->getTransform().rotate(0.75f, 0.5f, 0.3f, 0.2f);
+  mTestSpecular->getTransform().rotate(0.5f, 0.3f, 0.2f, 0.75f);
 
   // Examples of various translations and rotations
 
   // Rotate in multiple directions simultaneously
   MeshRenderer::getInstance("rgbNormalsCube")
       ->getTransform()
-      .rotate(0.75f, 0.2f, 0.4f, 0.6f);
+      .rotate(0.2f, 0.4f, 0.6f, 0.75f);
 
   // Pitch forward and roll sideways
   MeshRenderer::getInstance("leftTriangle")
       ->getTransform()
-      .rotate(0.75f, 1.0f, 0.0f, 0.0f);
+      .rotate(1.0f, 0.0f, 0.0f, 0.75f);
   MeshRenderer::getInstance("rightTriangle")
       ->getTransform()
-      .rotate(0.75f, 0.0f, 0.0f, 1.0f);
+      .rotate(0.0f, 0.0f, 1.0f, 0.75f);
 
   // Move between two positions over time
   static float translateX = 0.025f;
@@ -528,15 +530,15 @@ void QtkScene::update() {
   // And lets rotate the triangles in two directions at once
   MeshRenderer::getInstance("topTriangle")
       ->getTransform()
-      .rotate(0.75f, 0.2f, 0.0f, 0.4f);
+      .rotate(0.2f, 0.0f, 0.4f, 0.75f);
   MeshRenderer::getInstance("bottomTriangle")
       ->getTransform()
-      .rotate(0.75f, 0.0f, 0.2f, 0.4f);
+      .rotate(0.0f, 0.2f, 0.4f, 0.75f);
   // And make the bottom triangle green, instead of RGB
 
   // Rotate center cube in several directions simultaneously
   // + Not subject to gimbal lock since we are using quaternions :)
   MeshRenderer::getInstance("centerCube")
       ->getTransform()
-      .rotate(0.75f, 0.2f, 0.4f, 0.6f);
+      .rotate(0.2f, 0.4f, 0.6f, 0.75f);
 }

src/app/qtkwidget.cpp

@@ -7,6 +7,7 @@
 ##############################################################################*/
 
 #include <QKeyEvent>
+#include <QMimeData>
 #include <QVBoxLayout>
 
 #include <qtk/input.h>
@@ -14,6 +15,7 @@
 #include <qtk/shape.h>
 
 #include "debugconsole.h"
+#include "qtk/qtkmessagelogger.h"
 #include "qtkmainwindow.h"
 #include "qtkwidget.h"
 
@@ -29,8 +31,10 @@ 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),
+    QOpenGLWidget(parent), mDebugLogger(new QOpenGLDebugLogger(this)),
-    mConsole(new DebugConsole(this, name)), mScene(Q_NULLPTR) {
+    mConsole(new DebugConsole(this, name)), mScene(Q_NULLPTR),
+    mLogger(new Qtk::Logger(this)) {
+  setAcceptDrops(true);
   setScene(scene);
   setObjectName(name);
   QSurfaceFormat format;
@@ -70,14 +74,22 @@ void QtkWidget::initializeGL() {
   // Connect the frameSwapped signal to call the update() function
   connect(this, SIGNAL(frameSwapped()), this, SLOT(update()));
 
+  toggleConsole();
   // Initialize OpenGL debug context
-  mDebugLogger = new QOpenGLDebugLogger(this);
   if(mDebugLogger->initialize()) {
-    qDebug() << "GL_DEBUG Debug Logger" << mDebugLogger << "\n";
     connect(
-        mDebugLogger, SIGNAL(messageLogged(QOpenGLDebugMessage)), this,
+        mDebugLogger, SIGNAL(messageLogged(QOpenGLDebugMessage)), mLogger,
-        SLOT(messageLogged(QOpenGLDebugMessage)));
+        SLOT(log(QOpenGLDebugMessage)));
+    //        connect(
+    //            Qtk::QtkMessageLogger::get(),
+    //            &Qtk::QtkMessageLogger::messageLogged, mLogger,
+    //            &Qtk::Logger::parseError);
     mDebugLogger->startLogging();
+    QString msg;
+    QTextStream stream(&msg);
+    stream << "Logging started on GL_DEBUG Debug Logger: " << mDebugLogger;
+    mDebugLogger->logMessage(QOpenGLDebugMessage::createApplicationMessage(
+        stream.string()->toStdString().c_str()));
   }
 
   printContextInformation();
@@ -107,11 +119,11 @@ void QtkWidget::paintGL() {
   }
 }
 
-void QtkWidget::setScene(Qtk::Scene * scene) {
+void QtkWidget::setScene(Scene * scene) {
   if(mScene != Q_NULLPTR) {
     delete mScene;
     connect(
-        scene, &Qtk::Scene::sceneUpdated, MainWindow::getMainWindow(),
+        scene, &Scene::sceneUpdated, MainWindow::getMainWindow(),
         &MainWindow::refreshScene);
   }
 
@@ -129,8 +141,7 @@ void QtkWidget::toggleConsole() {
     mConsoleActive = false;
   } else {
     MainWindow::getMainWindow()->addDockWidget(
-        Qt::DockWidgetArea::BottomDockWidgetArea,
+        Qt::DockWidgetArea::BottomDockWidgetArea, mConsole);
-        dynamic_cast<QDockWidget *>(mConsole));
     mConsole->setHidden(false);
     mConsoleActive = true;
   }
@@ -140,6 +151,34 @@ void QtkWidget::toggleConsole() {
  * Protected Methods
  ******************************************************************************/
 
+void QtkWidget::dragEnterEvent(QDragEnterEvent * event) {
+  if(event->mimeData()->hasFormat("text/plain")) {
+    event->acceptProposedAction();
+  }
+}
+
+void QtkWidget::dropEvent(QDropEvent * event) {
+  mConsole->sendLog(event->mimeData()->text());
+  auto urls = event->mimeData()->urls();
+  if(!urls.isEmpty()) {
+    if(urls.size() > 1) {
+      qDebug() << "Cannot accept drop of multiple files.";
+      event->ignore();
+      return;
+    }
+
+    // TODO: Support other object types.
+    auto url = urls.front();
+    if(url.fileName().endsWith(".obj")) {
+      mScene->loadModel(url);
+      event->acceptProposedAction();
+    } else {
+      qDebug() << "Unsupported file type: " + url.fileName() + "\n";
+      event->ignore();
+    }
+  }
+}
+
 void QtkWidget::keyPressEvent(QKeyEvent * event) {
   if(event->isAutoRepeat()) {
     // Do not repeat input while a key is held down
@@ -175,74 +214,6 @@ void QtkWidget::update() {
   QWidget::update();
 }
 
-void QtkWidget::messageLogged(const QOpenGLDebugMessage & msg) {
-  QString error;
-
-  DebugContext context;
-  // Format based on severity
-  switch(msg.severity()) {
-    case QOpenGLDebugMessage::NotificationSeverity:
-      error += "--";
-      context = Status;
-      break;
-    case QOpenGLDebugMessage::HighSeverity:
-      error += "!!";
-      context = Fatal;
-      break;
-    case QOpenGLDebugMessage::MediumSeverity:
-      error += "!~";
-      context = Error;
-      break;
-    case QOpenGLDebugMessage::LowSeverity:
-      error += "~~";
-      context = Warn;
-      break;
-  }
-
-  error += " (";
-
-  // Format based on source
-#define CASE(c)                \
-  case QOpenGLDebugMessage::c: \
-    error += #c;               \
-    break
-  switch(msg.source()) {
-    CASE(APISource);
-    CASE(WindowSystemSource);
-    CASE(ShaderCompilerSource);
-    CASE(ThirdPartySource);
-    CASE(ApplicationSource);
-    CASE(OtherSource);
-    CASE(InvalidSource);
-  }
-#undef CASE
-
-  error += " : ";
-
-// Format based on type
-#define CASE(c)                \
-  case QOpenGLDebugMessage::c: \
-    error += #c;               \
-    break
-  switch(msg.type()) {
-    CASE(InvalidType);
-    CASE(ErrorType);
-    CASE(DeprecatedBehaviorType);
-    CASE(UndefinedBehaviorType);
-    CASE(PortabilityType);
-    CASE(PerformanceType);
-    CASE(OtherType);
-    CASE(MarkerType);
-    CASE(GroupPushType);
-    CASE(GroupPopType);
-  }
-#undef CASE
-
-  error += ")\n" + msg.message() + "\n";
-  qDebug() << qPrintable(error);
-  sendLog("(OpenGL) " + error.replace("\n", "\n(OpenGL) "), context);
-}
-
 /*******************************************************************************
  * Private Methods
  ******************************************************************************/
@@ -253,15 +224,16 @@ void QtkWidget::teardownGL() { /* Nothing to teardown yet... */
 void QtkWidget::updateCameraInput() {
   Input::update();
   // Camera Transformation
-  if(Input::buttonPressed(Qt::RightButton)) {
+  if(Input::buttonPressed(Qt::LeftButton)
+     || Input::buttonPressed(Qt::RightButton)) {
     static const float transSpeed = 0.1f;
     static const float rotSpeed = 0.5f;
 
     // Handle rotations
-    Scene::getCamera().getTransform().rotate(
+    Scene::getCamera().rotate(QQuaternion::fromAxisAndAngle(
-        -rotSpeed * Input::mouseDelta().x(), Camera3D::LocalUp);
+        Camera3D::LocalUp, -rotSpeed * Input::mouseDelta().x()));
-    Scene::getCamera().getTransform().rotate(
+    Scene::getCamera().rotate(QQuaternion::fromAxisAndAngle(
-        -rotSpeed * Input::mouseDelta().y(), Scene::getCamera().getRight());
+        Scene::getCamera().getRight(), -rotSpeed * Input::mouseDelta().y()));
 
     // Handle translations
     QVector3D translation;
@@ -283,7 +255,7 @@ void QtkWidget::updateCameraInput() {
     if(Input::keyPressed(Qt::Key_E)) {
       translation += Scene::getCamera().getUp() / 2.0f;
     }
-    Scene::getCamera().getTransform().translate(transSpeed * translation);
+    Scene::getCamera().translate(transSpeed * translation);
   }
 }
 
@@ -316,6 +288,5 @@ void QtkWidget::printContextInformation() {
   auto message = QString(glType) + glVersion + "(" + glProfile + ")"
                  + "\nOpenGL Vendor: " + glVendor
                  + "\nRendering Device: " + glRenderer;
-  qDebug() << qPrintable(message);
+  emit sendLog("(OpenGL) " + message.replace("\n", "\n(OpenGL) "), Status);
-  sendLog("(OpenGL) " + message.replace("\n", "\n(OpenGL) "), Status);
 }

src/app/qtkwidget.h

@@ -19,6 +19,7 @@
 
 #include <qtk/qtkapi.h>
 #include <qtk/scene.h>
+#include "logger.h"
 
 namespace Qtk {
   class DebugConsole;
@@ -107,6 +108,8 @@ namespace Qtk {
         return mDebugLogger;
       }
 
+      inline Logger * getLogger() { return mLogger; }
+
       /*************************************************************************
        * Setters
        ************************************************************************/
@@ -129,13 +132,21 @@ namespace Qtk {
        * @param message The message to log.
        * @param context The context of the log message.
        */
-      void sendLog(const QString & message, DebugContext context = Status);
+      void sendLog(const QString & message, Qtk::DebugContext context = Status);
+
+      // TODO: Use this signal in treeview and toolbox to update object
+      // properties
+      void objectFocusChanged(const QString objectName);
 
     protected:
       /*************************************************************************
        * Protected Methods
        ************************************************************************/
 
+      void dragEnterEvent(QDragEnterEvent * event) override;
+
+      void dropEvent(QDropEvent * event) override;
+
       /**
        * @param event Key press event to update camera input manager.
        */
@@ -166,10 +177,11 @@ namespace Qtk {
       /**
        * Called when the `messageLogged` signal is caught.
        * See definition of initializeGL()
+       * https://doc.qt.io/qt-6/qopengldebuglogger.html#signals
        *
        * @param msg The message logged.
        */
-      void messageLogged(const QOpenGLDebugMessage & msg);
+//      void messageLogged(const QOpenGLDebugMessage & msg);
 
     private:
       /*************************************************************************
@@ -195,6 +207,7 @@ namespace Qtk {
        * Private Members
        ************************************************************************/
 
+      Qtk::Logger * mLogger;
       QOpenGLDebugLogger * mDebugLogger;
       Qtk::Scene * mScene;
       Qtk::DebugConsole * mConsole;

src/app/resources.h.in

@@ -0,0 +1,6 @@
+#ifndef QTK_RESOURCES_H_IN_H
+#define QTK_RESOURCES_H_IN_H
+
+// Not currently in use, but will be in the future.
+
+#endif  // QTK_RESOURCES_H_IN_H

src/app/toolbox.cpp

@@ -8,13 +8,142 @@
 */
 
 #include "toolbox.h"
+#include "qtkmainwindow.h"
 #include "ui_toolbox.h"
 
-Qtk::ToolBox::ToolBox(QWidget * parent) :
+#include <QFormLayout>
-    QDockWidget(parent), ui(new Ui::ToolBox) {
+#include <QLabel>
+
+using namespace Qtk;
+
+ToolBox::ToolBox(QWidget * parent) : QDockWidget(parent), ui(new Ui::ToolBox) {
   ui->setupUi(this);
+  setMinimumWidth(350);
 }
 
-Qtk::ToolBox::~ToolBox() {
+void ToolBox::updateFocus(const QString & name) {
+  auto object =
+      MainWindow::getMainWindow()->getQtkWidget()->getScene()->getObject(name);
+  if(object != Q_NULLPTR) {
+    removePages();
+    createPageProperties(object);
+    createPageShader(object);
+  }
+}
+
+ToolBox::~ToolBox() {
   delete ui;
 }
+
+void ToolBox::removePages() {
+  // Remove all existing pages.
+  for(size_t i = 0; i < ui->toolBox->count(); i++) {
+    delete ui->toolBox->widget(i);
+    ui->toolBox->removeItem(i);
+  }
+}
+
+void ToolBox::createPageProperties(const Object * object) {
+  auto transform = object->getTransform();
+  auto type = object->getType();
+  auto * widget = new QWidget;
+  ui->toolBox->addItem(widget, "Properties");
+  ui->toolBox->setCurrentWidget(widget);
+
+  auto * layout = new QFormLayout;
+  layout->addRow(
+      new QLabel(tr("Name:")), new QLabel(object->getName().c_str()));
+
+  layout->addRow(
+      new QLabel(tr("Type:")),
+      new QLabel(type == Object::Type::QTK_MESH ? "Mesh" : "Model"));
+
+  auto rowLayout = new QHBoxLayout;
+  rowLayout->addWidget(new QLabel(tr("Translation:")));
+  int minWidth = 75;
+  for(size_t i = 0; i < 3; i++) {
+    auto spinBox = new QDoubleSpinBox;
+    spinBox->setMinimum(std::numeric_limits<double>::lowest());
+    spinBox->setSingleStep(0.1);
+    spinBox->setValue(transform.getTranslation()[i]);
+    spinBox->setFixedWidth(minWidth);
+    rowLayout->addWidget(spinBox);
+
+    if(i == 0) {
+      connect(
+          spinBox, &QDoubleSpinBox::valueChanged, object,
+          &Object::setTranslationX);
+    } else if(i == 1) {
+      connect(
+          spinBox, &QDoubleSpinBox::valueChanged, object,
+          &Object::setTranslationY);
+    } else if(i == 2) {
+      connect(
+          spinBox, &QDoubleSpinBox::valueChanged, object,
+          &Object::setTranslationZ);
+    }
+  }
+  layout->addRow(rowLayout);
+
+  rowLayout = new QHBoxLayout;
+  rowLayout->addWidget(new QLabel(tr("Scale:")));
+  for(size_t i = 0; i < 3; i++) {
+    auto spinBox = new QDoubleSpinBox;
+    spinBox->setMinimum(std::numeric_limits<double>::lowest());
+    spinBox->setSingleStep(0.1);
+    spinBox->setValue(transform.getScale()[i]);
+    spinBox->setFixedWidth(minWidth);
+    rowLayout->addWidget(spinBox);
+
+    if(i == 0) {
+      connect(
+          spinBox, &QDoubleSpinBox::valueChanged, object, &Object::setScaleX);
+    } else if(i == 1) {
+      connect(
+          spinBox, &QDoubleSpinBox::valueChanged, object, &Object::setScaleY);
+    } else if(i == 2) {
+      connect(
+          spinBox, &QDoubleSpinBox::valueChanged, object, &Object::setScaleZ);
+    }
+  }
+  layout->addRow(rowLayout);
+  widget->setLayout(layout);
+}
+
+void ToolBox::createPageShader(const Object * object) {
+  // Shaders page.
+  auto widget = new QWidget;
+  ui->toolBox->addItem(widget, "Shaders");
+  auto mainLayout = new QFormLayout;
+  auto rowLayout = new QHBoxLayout;
+  rowLayout->addWidget(new QLabel("Vertex Shader:"));
+  rowLayout->addWidget(new QLabel(object->getVertexShader().c_str()));
+  mainLayout->addRow(rowLayout);
+
+  auto shaderView = new QTextEdit;
+  shaderView->setReadOnly(true);
+  auto vertexFile = QFile(object->getVertexShader().c_str());
+  if(vertexFile.exists()) {
+    vertexFile.open(QIODeviceBase::ReadOnly);
+    shaderView->setText(vertexFile.readAll());
+    vertexFile.close();
+    mainLayout->addRow(shaderView);
+  }
+
+  rowLayout = new QHBoxLayout;
+  rowLayout->addWidget(new QLabel("Fragment Shader:"));
+  rowLayout->addWidget(new QLabel(object->getFragmentShader().c_str()));
+  mainLayout->addRow(rowLayout);
+
+  shaderView = new QTextEdit;
+  shaderView->setReadOnly(true);
+  auto fragmentfile = QFile(object->getFragmentShader().c_str());
+  if(fragmentfile.exists()) {
+    fragmentfile.open(QIODeviceBase::ReadOnly);
+    shaderView->setText(fragmentfile.readAll());
+    fragmentfile.close();
+    mainLayout->addRow(shaderView);
+  }
+
+  widget->setLayout(mainLayout);
+}

src/app/toolbox.h

@@ -12,6 +12,11 @@
 
 #include <QDesignerExportWidget>
 #include <QDockWidget>
+#include <QDoubleSpinBox>
+#include <QGroupBox>
+
+
+#include "qtk/scene.h"
 
 namespace Ui {
   class ToolBox;
@@ -30,6 +35,15 @@ namespace Qtk {
 
       ~ToolBox();
 
+      void removePages();
+
+      void createPageProperties(const Object * object);
+
+      void createPageShader(const Object * object);
+
+      void updateFocus(const QString & name);
+
+
     private:
       /*************************************************************************
        * Private Members

src/app/toolbox.ui

@@ -10,17 +10,57 @@
     <height>300</height>
    </rect>
   </property>
+  <property name="sizePolicy">
+   <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+    <horstretch>0</horstretch>
+    <verstretch>0</verstretch>
+   </sizepolicy>
+  </property>
+  <property name="minimumSize">
+   <size>
+    <width>86</width>
+    <height>167</height>
+   </size>
+  </property>
   <property name="windowTitle">
    <string>Object Details</string>
   </property>
   <widget class="QWidget" name="dockWidgetContents">
-   <layout class="QHBoxLayout" name="horizontalLayout">
+   <property name="sizePolicy">
+    <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+     <horstretch>0</horstretch>
+     <verstretch>0</verstretch>
+    </sizepolicy>
+   </property>
+   <layout class="QVBoxLayout" name="verticalLayout">
     <item>
      <widget class="QToolBox" name="toolBox">
       <property name="currentIndex">
        <number>0</number>
       </property>
-      <widget class="QWidget" name="page">
+      <widget class="QWidget" name="page_properties">
+       <property name="enabled">
+        <bool>true</bool>
+       </property>
+       <property name="geometry">
+        <rect>
+         <x>0</x>
+         <y>0</y>
+         <width>382</width>
+         <height>201</height>
+        </rect>
+       </property>
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+       <attribute name="label">
+        <string>Properties</string>
+       </attribute>
+      </widget>
+      <widget class="QWidget" name="page_shaders">
        <property name="geometry">
         <rect>
          <x>0</x>
@@ -33,19 +73,6 @@
         <string>Shaders</string>
        </attribute>
       </widget>
-      <widget class="QWidget" name="page_2">
-       <property name="geometry">
-        <rect>
-         <x>0</x>
-         <y>0</y>
-         <width>382</width>
-         <height>201</height>
-        </rect>
-       </property>
-       <attribute name="label">
-        <string>Properties</string>
-       </attribute>
-      </widget>
      </widget>
     </item>
    </layout>

src/app/treeview.cpp

@@ -46,18 +46,24 @@ void Qtk::TreeView::updateView(const Qtk::Scene * scene) {
 void Qtk::TreeView::itemFocus(QTreeWidgetItem * item, int column) {
   QString name = item->text(column);
   auto scene = MainWindow::getMainWindow()->getQtkWidget()->getScene();
-  auto & transform = scene->getCamera().getTransform();
   auto object = scene->getObject(name);
+  Transform3D * objectTransform;
+  // If the object is a mesh or model, focus the camera on it.
   if(object == Q_NULLPTR) {
     qDebug() << "Attempt to get non-existing object with name '" << name
              << "'\n";
-  }
+  } else if(object->getType() == Object::QTK_MESH) {
-  Transform3D * objectTransform;
-  if(object->getType() == Object::QTK_MESH) {
     objectTransform = &dynamic_cast<MeshRenderer *>(object)->getTransform();
   } else if(object->getType() == Object::QTK_MODEL) {
     objectTransform = &dynamic_cast<Model *>(object)->getTransform();
   }
-  transform.setTranslation(objectTransform->getTranslation());
+  auto focusScale = objectTransform->getScale();
-  transform.translate(0.0f, 0.0f, 3.0f);
+  float height = focusScale.y() / 2.0f;
+  QVector3D pos = objectTransform->getTranslation();
+  pos.setY(pos.y() + height);
+  Qtk::Scene::getCamera().setTranslation(pos);
+  Qtk::Scene::getCamera().translate({0.0f, 0.0f, 3.0f});
+
+  // Emit signal from qtk widget for new object focus. Triggers GUI updates.
+  emit MainWindow::getMainWindow()->getQtkWidget()->objectFocusChanged(name);
 }

src/qtk/CMakeLists.txt

@@ -24,6 +24,8 @@ set(
     skybox.h
     texture.h
     transform3D.h
+    qtkmessagelogger.h
+    ../app/logger.h
 )
 
 set(
@@ -41,6 +43,8 @@ set(
     skybox.cpp
     texture.cpp
     transform3D.cpp
+    qtkmessagelogger.cpp
+    ../app/logger.cpp
 )
 
 qt6_add_big_resources(QTK_LIBRARY_SOURCES "${QTK_RESOURCES}/resources.qrc")
@@ -68,9 +72,9 @@ target_link_libraries(
     Qt6::Core Qt6::OpenGLWidgets Qt6::Widgets
 )
 
-if(QTK_SUBMODULES OR NOT ASSIMP_NEW_INTERFACE)
+if(QTK_SUBMODULES OR NOT QTK_ASSIMP_NEW_INTERFACE)
   target_link_libraries(qtk_library PUBLIC assimp)
-elseif(ASSIMP_NEW_INTERFACE)
+elseif(QTK_ASSIMP_NEW_INTERFACE)
   target_link_libraries(qtk_library PUBLIC assimp::assimp)
 endif()
 

src/qtk/camera3d.cpp

@@ -29,28 +29,3 @@ const QMatrix4x4 & Camera3D::toMatrix() {
   mWorld.translate(-mTransform.getTranslation());
   return mWorld;
 }
-
-/*******************************************************************************
- * Qt Streams
- ******************************************************************************/
-
-QDataStream & operator<<(QDataStream & out, Camera3D & transform) {
-  out << transform.getTransform();
-  return out;
-}
-
-QDataStream & operator>>(QDataStream & in, Camera3D & transform) {
-  in >> transform.getTransform();
-  return in;
-}
-
-QDebug operator<<(QDebug dbg, const Camera3D & transform) {
-  dbg << "Camera3D\n{\n";
-  dbg << "Position: <" << transform.getTranslation().x() << ", "
-      << transform.getTranslation().y() << ", "
-      << transform.getTranslation().z() << ">\n";
-  dbg << "Rotation: <" << transform.getRotation().x() << ", "
-      << transform.getRotation().y() << ", " << transform.getRotation().z()
-      << " | " << transform.getRotation().scalar() << ">\n}";
-  return dbg;
-}

src/qtk/camera3d.h

@@ -32,7 +32,9 @@ namespace Qtk {
       /**
        * @return Transform3D associated with this camera.
        */
-      inline Transform3D & getTransform() { return mTransform; }
+      [[nodiscard]] inline const Transform3D & getTransform() const {
+        return mTransform;
+      }
 
       /**
        * @return Current translation of the camera as a QVector3D.
@@ -78,33 +80,85 @@ namespace Qtk {
        */
       const QMatrix4x4 & toMatrix();
 
+      /**
+       * Set the translation for this camera.
+       * TODO: Replace these methods by inheriting from a base class.
+       *
+       * @param translation QVector3D for the new translation.
+       */
+      inline void setTranslation(const QVector3D & translation) {
+        mTransform.setTranslation(translation);
+      }
+
+      /**
+       * Set the rotation for this camera.
+       *
+       * @param rotation QQuaternion for the new rotation.
+       */
+      inline void setRotation(const QQuaternion & rotation) {
+        mTransform.setRotation(rotation);
+      }
+
+      /**
+       * Sets a rotation upon an axis represented by the 3D vector (x, y, z)
+       *
+       * @param ax X axis to set angle for.
+       * @param ay Y axis to set angle for.
+       * @param az Z axis to set angle for.
+       * @param angle Angle to set rotation.
+       */
+      inline void setRotation(float ax, float ay, float az, float angle) {
+        mTransform.setRotation(ax, ay, az, angle);
+      }
+
+      /**
+       * Translate the camera by the given position.
+       *
+       * @param position QVector3D for the position to translate by.
+       */
+      inline void translate(const QVector3D & position) {
+        mTransform.translate(position);
+      }
+
+      /**
+       * Rotate the camera by the given rotation.
+       *
+       * @param rotation QQaternion for the rotation to apply.
+       */
+      inline void rotate(const QQuaternion & rotation) {
+        mTransform.rotate(rotation);
+      }
+
+      /**
+       * Sets a rotation upon an axis represented by the 3D vector (x, y, z)
+       *
+       * @param ax X axis to set angle for.
+       * @param ay Y axis to set angle for.
+       * @param az Z axis to set angle for.
+       * @param angle Angle to set rotation.
+       */
+      inline void rotate(float ax, float ay, float az, float angle) {
+        mTransform.rotate(ax, ay, az, angle);
+      }
+
     private:
-      /*************************************************************************
-       * Private Methods
-       ************************************************************************/
-
-#ifndef QT_NO_DATASTREAM
-      friend QDataStream & operator<<(QDataStream & out, Camera3D & transform);
-      friend QDataStream & operator>>(QDataStream & in, Camera3D & transform);
-#endif
-
       /*************************************************************************
        * Private Members
        ************************************************************************/
 
       Transform3D mTransform;
       QMatrix4x4 mWorld;
-  };
 
-// Qt Streams
+      /*************************************************************************
+       * Qt Streams
+       ************************************************************************/
+
 #ifndef QT_NO_DATASTREAM
-  QDataStream & operator<<(QDataStream & out, const Camera3D & transform);
+      friend QDataStream & operator<<(
-  QDataStream & operator>>(QDataStream & in, Camera3D & transform);
+          QDataStream & out, const Camera3D & camera);
-#endif
+      friend QDataStream & operator>>(QDataStream & in, Camera3D & camera);
-
-#ifndef QT_NO_DEBUG_STREAM
-  QDebug operator<<(QDebug dbg, const Camera3D & transform);
 #endif
+  };
 }  // namespace Qtk
 
 Q_DECLARE_TYPEINFO(Qtk::Camera3D, Q_MOVABLE_TYPE);

src/qtk/meshrenderer.h

@@ -211,6 +211,14 @@ namespace Qtk {
        */
       inline Transform3D & getTransform() { return mTransform; }
 
+      inline std::string getVertexShader() const override {
+        return mVertexShader;
+      }
+
+      inline std::string getFragmentShader() const override {
+        return mFragmentShader;
+      }
+
     private:
       /*************************************************************************
        * Private Members

src/qtk/model.cpp

@@ -43,7 +43,7 @@ void Model::flipTexture(const std::string & fileName, bool flipX, bool flipY) {
       texture.mTexture->destroy();
       texture.mTexture->create();
       texture.mTexture->setData(
-          *OpenGLTextureFactory::initImage(fullPath.c_str(), flipX, flipY));
+          OpenGLTextureFactory::initImage(fullPath.c_str(), flipX, flipY));
       modified = true;
     }
   }
@@ -238,7 +238,7 @@ ModelMesh::Textures Model::loadMaterialTextures(
       // Add the texture to the textures container
       textures.push_back(texture);
       // Add the texture to the loaded textures to avoid loading it twice
-      mTexturesLoaded.push_back(texture);
+      mTexturesLoaded.push_back(textures.back());
     }
   }
 

src/qtk/model.h

@@ -18,6 +18,9 @@
 #include <assimp/Importer.hpp>
 
 // Qtk
+#include <QFileInfo>
+
+
 #include "modelmesh.h"
 #include "qtkapi.h"
 
@@ -58,14 +61,6 @@ namespace Qtk {
         loadModel(mModelPath);
       }
 
-      inline Model(
-          std::string name, std::string path,
-          std::string vertexShader = ":/shaders/model-basic.vert",
-          std::string fragmentShader = ":/shaders/model-basic.frag") :
-          Model(
-              name.c_str(), path.c_str(), vertexShader.c_str(),
-              fragmentShader.c_str()) {}
-
       inline ~Model() override { mManager.remove(getName().c_str()); }
 
       /*************************************************************************
@@ -132,6 +127,14 @@ namespace Qtk {
        */
       inline Transform3D & getTransform() { return mTransform; }
 
+      inline std::string getVertexShader() const override {
+        return mVertexShader;
+      }
+
+      inline std::string getFragmentShader() const override {
+        return mFragmentShader;
+      }
+
     private:
       /*************************************************************************
        * Private Methods

src/qtk/modelmesh.cpp

@@ -52,6 +52,10 @@ void ModelMesh::draw(QOpenGLShaderProgram & shader) {
     shader.setUniformValue((name + number).c_str(), i);
   }
 
+  // Always reset active texture to GL_TEXTURE0 before we draw.
+  // This is important for models with no textures.
+  glActiveTexture(GL_TEXTURE0);
+
   // Draw the mesh
   glDrawElements(
       GL_TRIANGLES, mIndices.size(), GL_UNSIGNED_INT, mIndices.data());
@@ -62,7 +66,6 @@ void ModelMesh::draw(QOpenGLShaderProgram & shader) {
   }
   shader.release();
   mVAO->release();
-  glActiveTexture(GL_TEXTURE0);
 }
 
 /*******************************************************************************

src/qtk/modelmesh.h

@@ -30,6 +30,21 @@ namespace Qtk {
    * Struct to store model textures. 3D Models may have multiple.
    */
   struct QTKAPI ModelTexture {
+      ModelTexture() = default;
+
+      /**
+       * Construct a ModelTexture.
+       *
+       * @param id Texture ID for this texture.
+       * @param type Type of texture in string format.
+       * @param path Path to the texture on disk.
+       */
+      ModelTexture(const std::string & type, const std::string & path) :
+          mType(type), mPath(path) {
+        mTexture = OpenGLTextureFactory::initTexture(path.c_str());
+        mID = mTexture->textureId();
+      }
+
       /** Texture ID for for this texture. */
       GLuint mID {};
       QOpenGLTexture * mTexture {};

src/qtk/object.h

@@ -96,10 +96,24 @@ namespace Qtk {
 
       [[nodiscard]] inline const Type & getType() const { return mType; }
 
+      [[nodiscard]] inline virtual const Transform3D & getTransform() const {
+        return mTransform;
+      }
+
+      [[nodiscard]] inline virtual std::string getVertexShader() const {
+        return "Base Object has no vertex shader.";
+      }
+
+      virtual inline std::string getFragmentShader() const {
+        return "Base Object has no fragment shader.";
+      }
+
       /*************************************************************************
        * Setters
        ************************************************************************/
 
+      virtual inline void setName(const std::string & name) { mName = name; }
+
       virtual inline void setColors(const Colors & value) {
         mShape.mColors = value;
       }
@@ -135,6 +149,39 @@ namespace Qtk {
         mShape.mVertices = value;
       }
 
+      inline void setScaleX(double x) {
+        mTransform.setScale(
+            x, mTransform.getScale().y(), mTransform.getScale().z());
+      }
+
+      inline void setScaleY(double y) {
+        mTransform.setScale(
+            mTransform.getScale().x(), y, mTransform.getScale().z());
+      }
+
+      inline void setScaleZ(double z) {
+        mTransform.setScale(
+            mTransform.getScale().x(), mTransform.getScale().y(), z);
+      }
+
+      inline void setTranslationX(double x) {
+        mTransform.setTranslation(
+            x, mTransform.getTranslation().y(),
+            mTransform.getTranslation().z());
+      }
+
+      inline void setTranslationY(double y) {
+        mTransform.setTranslation(
+            mTransform.getTranslation().x(), y,
+            mTransform.getTranslation().z());
+      }
+
+      inline void setTranslationZ(double z) {
+        mTransform.setTranslation(
+            mTransform.getTranslation().x(), mTransform.getTranslation().y(),
+            z);
+      }
+
       /*************************************************************************
        * Public Methods
        ************************************************************************/

src/qtk/qtkapi.h

@@ -22,6 +22,8 @@
 #define QTKAPI
 #endif
 
+#include "qtk/qtkmessagelogger.h"
+
 /**
  * Initialize Qt resources required by the Qtk library.
  * This cannot be defined within any namespace, but can be called by ctors.
@@ -35,7 +37,7 @@ namespace Qtk {
   /**
    * Flag to set context for debug messages.
    */
-  enum DebugContext { Status, Debug, Warn, Error, Fatal };
+  enum DebugContext { Status, Debug, Warn, Error, Fatal, Invalid, Any };
 
   /**
    * Find top level parent for a widget.

src/qtk/qtkiostream.cpp

@@ -17,17 +17,23 @@ using namespace Qtk;
 QtkIOStream::QtkIOStream(const char * pFile, const char * pMode) :
     mFile(pFile) {
   QString mode(pMode);
-  bool read = mode.contains('r');
+  bool open = false;
-  bool write = mode.contains('w');
+  if(mode == "w" || mode == "wb") {
-  if(read && write) {
+    open = mFile.open(QIODeviceBase::WriteOnly);
-    mFile.open(QIODevice::ReadWrite);
+  } else if(mode == "r" || mode == "rb") {
-  } else if(read) {
+    open = mFile.open(QIODeviceBase::ReadOnly);
-    mFile.open(QIODevice::ReadOnly);
+  } else if(mode == "wt") {
-  } else if(write) {
+    open = mFile.open(QIODeviceBase::WriteOnly | QIODeviceBase::Text);
-    mFile.open(QIODevice::WriteOnly);
+  } else if(mode == "rt") {
+    open = mFile.open(QIODeviceBase::ReadOnly | QIODeviceBase::Text);
   } else {
+    open = false;
     qDebug() << "[Qtk::QtkIOStream] Invalid file open mode: " << mode << "\n";
   }
+  if(!open) {
+    qDebug() << "[Qtk::QtkIOStream] Could not open file: " << QString(pFile)
+             << "\n";
+  }
 }
 
 /*******************************************************************************
@@ -35,34 +41,24 @@ QtkIOStream::QtkIOStream(const char * pFile, const char * pMode) :
  ******************************************************************************/
 
 size_t QtkIOStream::Read(void * pvBuffer, size_t pSize, size_t pCount) {
-  size_t read = 0;
+  qint64 readSize = mFile.read((char *)pvBuffer, pSize * pCount);
-  do {
+  if(readSize < 0) {
-    auto readSize = mFile.read((char *)pvBuffer + read, pSize);
+    qDebug() << "[Qtk::QtkIOStream] Failed to read (" << pSize
-    if(readSize < 0) {
+             << ") bytes from file at: " << mFile.filesystemFileName().c_str()
-      qDebug() << "[Qtk::QtkIOStream] Failed to read (" << pSize
+             << "\n";
-               << ") bytes from file at: " << mFile.filesystemFileName().c_str()
+    return -1;
-               << "\n";
+  }
-      return -1;
+  return readSize;
-    }
-    read += readSize;
-  } while(pCount--);
-  return read;
 }
 
 size_t QtkIOStream::Write(const void * pvBuffer, size_t pSize, size_t pCount) {
-  size_t wrote = 0;
+  qint64 writeSize = mFile.write((char *)pvBuffer, pSize * pCount);
-  do {
+  if(writeSize < 0) {
-    auto writeSize = mFile.write((char *)pvBuffer + wrote, pSize);
+    qDebug() << "[Qtk::QtkIOStream] Failed to write buffer with size (" << pSize
-    if(writeSize < 0) {
+             << ") to file at: " << mFile.filesystemFileName().c_str() << "\n";
-      qDebug() << "[Qtk::QtkIOStream] Failed to write buffer with size ("
+    return -1;
-               << pSize
+  }
-               << ") to file at: " << mFile.filesystemFileName().c_str()
+  return writeSize;
-               << "\n";
-      return -1;
-    }
-    wrote += writeSize;
-  } while(pCount--);
-  return wrote;
 }
 
 aiReturn QtkIOStream::Seek(size_t pOffset, aiOrigin pOrigin) {

src/qtk/qtkiosystem.cpp

@@ -7,6 +7,7 @@
 ##############################################################################*/
 
 #include "qtkiosystem.h"
+#include <QDir>
 
 using namespace Qtk;
 
@@ -19,15 +20,11 @@ bool QtkIOSystem::Exists(const char * pFile) const {
 }
 
 char QtkIOSystem::getOsSeparator() const {
-#ifndef _WIN32
+  return QDir::separator().toLatin1();
-  return '/';
-#else
-  return '\\';
-#endif
 }
 
 Assimp::IOStream * QtkIOSystem::Open(const char * pFile, const char * pMode) {
-  if(!QFileInfo::exists(pFile)) {
+  if(!Exists(pFile)) {
     qDebug() << "[Qtk::QtkIOSystem] failed to open file: " << pFile << "\n";
     return nullptr;
   }

src/qtk/qtkmessagelogger.cpp

@@ -0,0 +1,61 @@
+
+#include "qtkmessagelogger.h"
+#include "camera3d.h"
+#include "transform3D.h"
+
+
+Qtk::QtkDebug Qtk::QtkDebug::operator<<(const Qtk::Transform3D & transform) {}
+
+#ifndef QT_NO_DEBUG_STREAM
+QDebug Qtk::operator<<(QDebug dbg, const Qtk::Transform3D & transform) {
+  dbg << "Transform3D\n{\n";
+  dbg << "Position: <" << transform.getTranslation().x() << ", "
+      << transform.getTranslation().y() << ", "
+      << transform.getTranslation().z() << ">\n";
+  dbg << "Scale: <" << transform.getScale().x() << ", "
+      << transform.getScale().y() << ", " << transform.getScale().z() << ">\n";
+  dbg << "Rotation: <" << transform.getRotation().x() << ", "
+      << transform.getRotation().y() << ", " << transform.getRotation().z()
+      << " | " << transform.getRotation().scalar() << ">\n}";
+  return dbg;
+}
+
+QDebug Qtk::operator<<(QDebug dbg, const Qtk::Camera3D & transform) {
+  dbg << "Camera3D\n{\n";
+  dbg << "Position: <" << transform.getTranslation().x() << ", "
+      << transform.getTranslation().y() << ", "
+      << transform.getTranslation().z() << ">\n";
+  dbg << "Rotation: <" << transform.getRotation().x() << ", "
+      << transform.getRotation().y() << ", " << transform.getRotation().z()
+      << " | " << transform.getRotation().scalar() << ">\n}";
+  return dbg;
+}
+#endif
+
+#ifndef QT_NO_DATASTREAM
+QDataStream & Qtk::operator<<(
+    QDataStream & out, const Qtk::Transform3D & transform) {
+  out << transform.mTranslation;
+  out << transform.mScale;
+  out << transform.mRotation;
+  return out;
+}
+
+QDataStream & Qtk::operator>>(QDataStream & in, Qtk::Transform3D & transform) {
+  in >> transform.mTranslation;
+  in >> transform.mScale;
+  in >> transform.mRotation;
+  transform.m_dirty = true;
+  return in;
+}
+
+QDataStream & Qtk::operator<<(QDataStream & out, const Qtk::Camera3D & camera) {
+  out << camera.getTransform();
+  return out;
+}
+
+QDataStream & Qtk::operator>>(QDataStream & in, Qtk::Camera3D & camera) {
+  in >> camera.mTransform;
+  return in;
+}
+#endif

src/qtk/qtkmessagelogger.h

@@ -0,0 +1,96 @@
+
+#ifndef QTK_QTKMESSAGELOGGER_H
+#define QTK_QTKMESSAGELOGGER_H
+
+#include "qtkapi.h"
+
+#include <QDebug>
+#include <QMessageLogger>
+#include <Qt>
+
+// #define qtkDebug    Qtk::QtkMessageLogger::get().debug
+// #define qtkInfo     Qtk::QtkMessageLogger::get().info
+// #define qtkWarning  Qtk::QtkMessageLogger::get().warning
+// #define qtkCritical Qtk::QtkMessageLogger::get().critical
+// #define qtkFatal    Qtk::QtkMessageLogger::get().fatal
+
+#define qtkDebug                                                  \
+  Qtk::QtkMessageLogger(                                          \
+      QT_MESSAGELOG_FILE, QT_MESSAGELOG_LINE, QT_MESSAGELOG_FUNC) \
+      .logger()                                                   \
+      .debug
+#define qtkInfo                                                   \
+  Qtk::QtkMessageLogger(                                          \
+      QT_MESSAGELOG_FILE, QT_MESSAGELOG_LINE, QT_MESSAGELOG_FUNC) \
+      .logger()                                                   \
+      .info
+#define qtkWarning                                                \
+  Qtk::QtkMessageLogger(                                          \
+      QT_MESSAGELOG_FILE, QT_MESSAGELOG_LINE, QT_MESSAGELOG_FUNC) \
+      .logger()                                                   \
+      .warning
+#define qtkCritical                                               \
+  Qtk::QtkMessageLogger(                                          \
+      QT_MESSAGELOG_FILE, QT_MESSAGELOG_LINE, QT_MESSAGELOG_FUNC) \
+      .logger()                                                   \
+      .critical
+#define qtkFatal                                                  \
+  Qtk::QtkMessageLogger(                                          \
+      QT_MESSAGELOG_FILE, QT_MESSAGELOG_LINE, QT_MESSAGELOG_FUNC) \
+      .logger()                                                   \
+      .fatal
+
+namespace Qtk {
+  class Transform3D;
+  class Camera3D;
+
+  class QTKAPI QtkDebug : public QDebug {
+    public:
+      QtkDebug operator<<(const Transform3D & transform);
+  };
+
+#ifndef QT_NO_DEBUG_STREAM
+  QDebug operator<<(QDebug dbg, const Transform3D & transform);
+
+  QDebug operator<<(QDebug dbg, const Camera3D & camera);
+#endif
+
+#ifndef QT_NO_DATASTREAM
+  QDataStream & operator<<(QDataStream & out, const Transform3D & transform);
+  QDataStream & operator>>(QDataStream & in, Transform3D & transform);
+
+  QDataStream & operator<<(QDataStream & out, const Camera3D & camera);
+  QDataStream & operator>>(QDataStream & in, Camera3D & camera);
+#endif
+
+  class QTKAPI QtkMessageLogger {
+    public:
+      QtkMessageLogger(const char * file, int line, const char * function) :
+          mQMessageLogger(file, line, function) {
+        qDebug();
+      }
+
+      //      static QtkMessageLogger * get() {
+      //        if(mQtkMessageLogger == Q_NULLPTR) {
+      //          mQtkMessageLogger = new QtkMessageLogger();
+      //        }
+      //        return mQtkMessageLogger;
+      //      }
+
+      //      QtkDebug debug() const {}
+
+      [[nodiscard]] inline const QMessageLogger & logger() const {
+        return mQMessageLogger;
+      }
+
+      inline QtkDebug debug() const { return {}; };
+
+
+      static QtkMessageLogger * mQtkMessageLogger;
+      QMessageLogger mQMessageLogger;
+  };
+
+
+}  // namespace Qtk
+
+#endif  // QTK_QTKMESSAGELOGGER_H

src/qtk/scene.cpp

@@ -19,8 +19,8 @@ QMatrix4x4 Scene::mProjection;
  ******************************************************************************/
 
 Scene::Scene() : mSceneName("Default Scene") {
-  mCamera.getTransform().setTranslation(0.0f, 0.0f, 20.0f);
+  mCamera.setTranslation({0.0f, 0.0f, 20.0f});
-  mCamera.getTransform().setRotation(-5.0f, 0.0f, 1.0f, 0.0f);
+  mCamera.setRotation({-5.0f, 0.0f, 1.0f, 0.0f});
 }
 
 Scene::~Scene() {
@@ -37,16 +37,42 @@ Scene::~Scene() {
  * Public Methods
  ******************************************************************************/
 
+template <> MeshRenderer * Scene::addObject(MeshRenderer * object) {
+  initSceneObjectName(object);
+  mMeshes.push_back(object);
+  sceneUpdated(mSceneName);
+  return object;
+}
+
+template <> Model * Scene::addObject(Model * object) {
+  initSceneObjectName(object);
+  mModels.push_back(object);
+  sceneUpdated(mSceneName);
+  return object;
+}
+
 void Scene::draw() {
   if(!mInit) {
     initializeOpenGLFunctions();
     init();
     mInit = true;
   }
+
+  while(!mModelLoadQueue.empty()) {
+    auto modelSpec = mModelLoadQueue.front();
+    // Load the model and add it to the scene.
+    addObject(new Model(modelSpec.first.c_str(), modelSpec.second.c_str()));
+    mModelLoadQueue.pop();
+  }
+
+  if(mPause) {
+    return;
+  }
+
   if(mSkybox != Q_NULLPTR) {
     mSkybox->draw();
   }
-  for(auto & model : mModels) {
+  for(const auto & model : mModels) {
     model->draw();
   }
   for(const auto & mesh : mMeshes) {
@@ -57,8 +83,8 @@ void Scene::draw() {
 std::vector<Object *> Scene::getObjects() const {
   // All scene objects must inherit from Qtk::Object.
   std::vector<Object *> objects(mMeshes.begin(), mMeshes.end());
-  for(auto model : mModels) {
+  for(const auto & model : mModels) {
-    objects.push_back(dynamic_cast<Object *>(model));
+    objects.push_back(model);
     if(objects.back() == nullptr) {
       return {};
     }
@@ -66,8 +92,8 @@ std::vector<Object *> Scene::getObjects() const {
   return objects;
 }
 
-Object * Scene::getObject(const QString & name) {
+Object * Scene::getObject(const QString & name) const {
-  for(auto object : getObjects()) {
+  for(const auto & object : getObjects()) {
     if(object->getName() == name.toStdString()) {
       return object;
     }
@@ -80,14 +106,14 @@ void Scene::setSkybox(Skybox * skybox) {
   mSkybox = skybox;
 }
 
-template <> MeshRenderer * Scene::addObject(MeshRenderer * object) {
+void Scene::initSceneObjectName(Object * object) {
-  mMeshes.push_back(object);
+  if(!mObjectCount.count(object->getName())) {
-  sceneUpdated(mSceneName);
+    mObjectCount[object->getName()] = 1;
-  return object;
+  } else {
-}
+    mObjectCount[object->getName()]++;
-
+  }
-template <> Model * Scene::addObject(Model * object) {
+  auto count = mObjectCount[object->getName()];
-  mModels.push_back(object);
+  if(count > 1) {
-  sceneUpdated(mSceneName);
+    object->setName(object->getName() + " (" + std::to_string(count) + ")");
-  return object;
+  }
 }

src/qtk/scene.h

@@ -10,7 +10,10 @@
 #define QTK_SCENE_H
 
 #include <QMatrix4x4>
+#include <QUrl>
 
+#include <queue>
+#include <unordered_map>
 #include <utility>
 
 #include "camera3d.h"
@@ -75,6 +78,18 @@ namespace Qtk {
        */
       virtual void update() {}
 
+      void loadModel(const QUrl & url) {
+        auto fileName = url.fileName().replace(".obj", "").toStdString();
+        auto filePath = url.toLocalFile().toStdString();
+        loadModel(fileName, filePath);
+      }
+
+      void loadModel(const std::string & name, const std::string & path) {
+        // Add the dropped model to the load queue.
+        // This is consumed during rendering of the scene if not empty.
+        mModelLoadQueue.emplace(name, path);
+      }
+
       /*************************************************************************
        * Accessors
        ************************************************************************/
@@ -91,7 +106,16 @@ namespace Qtk {
        * @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);
+      [[nodiscard]] Object * getObject(const QString & name) const;
+
+      /**
+       * @return The number of objects within the scene with the given name.
+       */
+      [[nodiscard]] uint64_t getObjectCount(const QString & name) {
+        return mObjectCount.count(name.toStdString())
+                   ? mObjectCount[name.toStdString()]
+                   : 0;
+      }
 
       /**
        * @return Camera attached to this scene.
@@ -166,6 +190,8 @@ namespace Qtk {
        */
       inline void setSceneName(QString name) { mSceneName = std::move(name); }
 
+      inline void setPause(bool pause) { mPause = pause; }
+
     signals:
       /**
        * Signal thrown when the scene is modified by adding or removing objects.
@@ -175,7 +201,26 @@ namespace Qtk {
        */
       void sceneUpdated(QString sceneName);
 
+
+      /*************************************************************************
+       * Public Members
+       ************************************************************************/
+    public:
+      /* Models used for storing 3D models in the scene. */
+      std::vector<Model *> mModels {};
+
+      /* Queue of models requested to load at runtime. */
+      std::queue<std::pair<std::string, std::string>> mModelLoadQueue;
+
     private:
+      /**
+       * Initialize an object name relative to other objects already loaded.
+       * Protects against having two objects with the same name.
+       *
+       * @param object Qtk Object to name within this scene.
+       */
+      void initSceneObjectName(Qtk::Object * object);
+
       /*************************************************************************
        * Private Members
        ************************************************************************/
@@ -183,14 +228,16 @@ namespace Qtk {
       static Camera3D mCamera;
       static QMatrix4x4 mProjection;
       bool mInit = false;
+      /* Pause rendering of the scene. */
+      bool mPause = false;
 
       QString mSceneName;
       /* The skybox for this scene. */
       Skybox * mSkybox {};
       /* MeshRenderers used simple geometry. */
       std::vector<MeshRenderer *> mMeshes {};
-      /* Models used for storing 3D models in the scene. */
+      /* Track count of objects with same initial name. */
-      std::vector<Model *> mModels {};
+      std::unordered_map<std::string, uint64_t> mObjectCount;
   };
 
   class SceneEmpty : public Scene {

src/qtk/texture.cpp

@@ -9,19 +9,18 @@
 #include <QDebug>
 #include <QImageReader>
 
+#include "app/qtkmainwindow.h"
 #include "texture.h"
 
 using namespace Qtk;
 
-QImage * OpenGLTextureFactory::initImage(
+QImage OpenGLTextureFactory::initImage(
     const char * image, bool flipX, bool flipY) {
   // Qt6 limits loaded images to 256MB by default
-  QImageReader::setAllocationLimit(512);
+  QImageReader::setAllocationLimit(1024);
-  auto loadedImage = new QImage(QImage(image).mirrored(flipX, flipY));
+  auto loadedImage = QImage(image).mirrored(flipX, flipY);
-  if(loadedImage->isNull()) {
+  if(loadedImage.isNull()) {
-    qDebug() << "[Qtk::OpenGLTextureFactory] Error loading image: " << image
+    return defaultTexture();
-             << "\nSupported types: " << QImageReader::supportedImageFormats();
-    return Q_NULLPTR;
   }
 
   return loadedImage;
@@ -29,13 +28,12 @@ QImage * OpenGLTextureFactory::initImage(
 
 QOpenGLTexture * OpenGLTextureFactory::initTexture(
     const char * texture, bool flipX, bool flipY) {
-  QImage * image = initImage(texture, flipX, flipY);
+  QImage image = initImage(texture, flipX, flipY);
   auto newTexture = new QOpenGLTexture(QOpenGLTexture::Target2D);
-  newTexture->setData(*image);
+  newTexture->setData(image);
   newTexture->setWrapMode(QOpenGLTexture::Repeat);
   newTexture->setMinMagFilters(
       QOpenGLTexture::LinearMipMapLinear, QOpenGLTexture::Linear);
-  delete image;
   return newTexture;
 }
 
@@ -71,6 +69,7 @@ QOpenGLTexture * OpenGLTextureFactory::initCubeMap(
     QImage faceImage(faceTextures[i]);
     if(faceImage.isNull()) {
       qDebug() << "Error loading cube map image\n";
+      faceImage = defaultTexture();
     }
     faceImage = faceImage.convertToFormat(QImage::Format_RGBA8888);
 

src/qtk/texture.h

@@ -74,9 +74,9 @@ namespace Qtk {
        *    Can be absolute or Qt resource path.
        * @param flipX If true the image will be flipped on X axis.
        * @param flipY If true the image will be flipped on Y axis.
-       * @return Pointer to an initialized QImage object.
+       * @return QImage object.
        */
-      static QImage * initImage(
+      static QImage initImage(
           const char * image, bool flipX = false, bool flipY = false);
 
       /**
@@ -132,6 +132,14 @@ namespace Qtk {
           const char * right, const char * top, const char * front,
           const char * left, const char * bottom, const char * back);
 
+      /// The texture used in place of a missing texture.
+      static QImage defaultTexture() {
+        // Use plaster for default texture if image fails to load.
+        // This prevents segfaults when loading a texture that doesn't exist.
+        // TODO: Replace with a '?' texture to indicate missing texture.
+        return QImage(":/textures/plaster.png");
+      }
+
     private:
       // Private ctor to prevent creating instances of this class
       OpenGLTextureFactory() = default;

src/qtk/transform3D.cpp

@@ -42,6 +42,7 @@ void Transform3D::rotate(const QQuaternion & dr) {
 
 void Transform3D::setTranslation(const QVector3D & t) {
   m_dirty = true;
+  qtkDebug() << "Setting translation to " << t;
   mTranslation = t;
 }
 
@@ -77,45 +78,3 @@ QVector3D Transform3D::getUp() const {
 QVector3D Transform3D::getRight() const {
   return mRotation.rotatedVector(LocalRight);
 }
-
-/*******************************************************************************
- * Private Methods
- ******************************************************************************/
-
-namespace Qtk {
-#ifndef QT_NO_DEBUG_STREAM
-
-  QDebug operator<<(QDebug dbg, const Transform3D & transform) {
-    dbg << "Transform3D\n{\n";
-    dbg << "Position: <" << transform.getTranslation().x() << ", "
-        << transform.getTranslation().y() << ", "
-        << transform.getTranslation().z() << ">\n";
-    dbg << "Scale: <" << transform.getScale().x() << ", "
-        << transform.getScale().y() << ", " << transform.getScale().z()
-        << ">\n";
-    dbg << "Rotation: <" << transform.getRotation().x() << ", "
-        << transform.getRotation().y() << ", " << transform.getRotation().z()
-        << " | " << transform.getRotation().scalar() << ">\n}";
-    return dbg;
-  }
-
-#endif
-
-#ifndef QT_NO_DATASTREAM
-  QDataStream & operator<<(QDataStream & out, const Transform3D & transform) {
-    out << transform.mTranslation;
-    out << transform.mScale;
-    out << transform.mRotation;
-    return out;
-  }
-
-  QDataStream & operator>>(QDataStream & in, Transform3D & transform) {
-    in >> transform.mTranslation;
-    in >> transform.mScale;
-    in >> transform.mRotation;
-    transform.m_dirty = true;
-    return in;
-  }
-
-#endif
-}  // namespace Qtk

src/qtk/transform3D.h

@@ -116,12 +116,12 @@ namespace Qtk {
       /**
        * 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.
+       * @param angle Angle to rotate.
        */
-      inline void rotate(float angle, float ax, float ay, float az) {
+      inline void rotate(float ax, float ay, float az, float angle) {
         rotate(QQuaternion::fromAxisAndAngle(ax, ay, az, angle));
       }
 
@@ -178,12 +178,12 @@ namespace Qtk {
       /**
        * 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.
+       * @param angle Angle to set rotation.
        */
-      inline void setRotation(float angle, float ax, float ay, float az) {
+      inline void setRotation(float ax, float ay, float az, float angle) {
         setRotation(QQuaternion::fromAxisAndAngle(ax, ay, az, angle));
       }
 
@@ -249,6 +249,10 @@ namespace Qtk {
 
       bool m_dirty;
 
+      /*************************************************************************
+       * Qt Streams
+       ************************************************************************/
+
 #ifndef QT_NO_DATASTREAM
       friend QDataStream & operator<<(
           QDataStream & out, const Transform3D & transform);
@@ -256,15 +260,6 @@ namespace Qtk {
           QDataStream & in, Transform3D & transform);
 #endif
   };
-
-#ifndef QT_NO_DEBUG_STREAM
-  QDebug operator<<(QDebug dbg, const Transform3D & transform);
-#endif
-
-#ifndef QT_NO_DATASTREAM
-  QDataStream & operator<<(QDataStream & out, const Transform3D & transform);
-  QDataStream & operator>>(QDataStream & in, Transform3D & transform);
-#endif
 }  // namespace Qtk
 
 Q_DECLARE_TYPEINFO(Qtk::Transform3D, Q_MOVABLE_TYPE);