ToolBar buttons to add and remove objects. (#18)

.github/workflows/build.yml

@@ -1,10 +1,16 @@
-name: All Builds
+name: Build
 
 on:
   push:
+    branches:
+      - '*'
+    # Runs on tag so the release workflow can use its artifact.
+    tags:
+      - "v*"
   pull_request:
   workflow_dispatch:
 
+
 env:
   QT_VERSION: 6.6.0
 
@@ -96,6 +102,16 @@ jobs:
           cd build
           cpack -C Release -G NSIS
 
+      - name: Upload logs on failure (WIN)
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: Build-Logs
+          path: |
+            D:\a\qtk\qtk\build\packages\_CPack_Packages\win64\NSIS\NSISOutput.log
+            D:\a\qtk\qtk\build\CMakeFiles\CMakeOutput.log
+            D:\a\qtk\qtk\build\CMakeFiles\CMakeError.log
+
       - name: Upload package artifacts (WIN)
         if: matrix.os == 'windows-latest'
         uses: actions/upload-artifact@v4
@@ -122,7 +138,7 @@ jobs:
       - name: Upload Qtk install directory
         uses: actions/upload-artifact@v4
         with:
-          name: qtk-gui-${{ matrix.os }}-install
+          name: qtk-gui-${{ matrix.os }}-archive
           path: install/*
 
 # TODO: Enable after trimming resources.
@@ -182,13 +198,13 @@ jobs:
 
       - name: Build Qtk Library
         shell: bash
-        run: cmake --build build/ --config Release --target qtk_library -- ${{ matrix.flags }}
+        run: cmake --build build/ --config Release --target qtk -- ${{ matrix.flags }}
 
       # Packaging
 
       - name: Install Qtk Library
         shell: bash
-        run: cmake --install build/ --config Release --prefix=$(pwd)/install --component qtk_library
+        run: cmake --install build/ --config Release --prefix=$(pwd)/install --component qtk
 
       - name: Package Qtk Library
         shell: bash
@@ -216,6 +232,16 @@ jobs:
           cd build
           cpack -C Release -G NSIS
 
+      - name: Upload logs on failure (WIN)
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: Build-Logs
+          path: |
+            D:\a\qtk\qtk\build\packages\_CPack_Packages\win64\NSIS\NSISOutput.log
+            D:\a\qtk\qtk\build\CMakeFiles\CMakeOutput.log
+            D:\a\qtk\qtk\build\CMakeFiles\CMakeError.log
+
       - name: Upload package artifacts (WIN)
         if: matrix.os == 'windows-latest'
         uses: actions/upload-artifact@v4
@@ -243,7 +269,7 @@ jobs:
         uses: actions/upload-artifact@v4
         if: always()
         with:
-          name: libqtk-${{ matrix.os }}-install
+          name: libqtk-${{ matrix.os }}-archive
           path: install/*
 
   Qtk-Plugins:
@@ -334,3 +360,29 @@ jobs:
       - name: Build Qtk
         shell: bash
         run: cmake --build build/ --config Release
+
+  release:
+    runs-on: ubuntu-latest
+    if: startsWith(github.ref, 'refs/tags/')
+    needs: [Qtk, Qtk-Library, Qtk-Plugins]
+    steps:
+      - name: Download Installer Artifact
+        uses: actions/download-artifact@v4
+        with:
+          path: |
+            build/packages/*
+            install/*
+
+      - name: Create GitHub Release
+        id: create_release
+        uses: softprops/action-gh-release@v1
+        with:
+          name: Qtk ${{ github.ref_name }}
+          draft: true
+          prerelease: false
+          generate_release_notes: true
+          files: |
+            build/packages/*
+            install/*
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

CMakeLists.txt

@@ -2,9 +2,9 @@
 ## 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                       ##
+## All Content (c) 2025 Shaun Reed, all rights reserved                       ##
 ################################################################################
-cmake_minimum_required(VERSION 3.23)
+cmake_minimum_required(VERSION 3.28)
 
 ################################################################################
 # Constants
@@ -18,6 +18,7 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 set(CMAKE_MACOSX_BUNDLE ON)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+set(CMAKE_AUTORCC_OPTIONS --binary)
 
 if(WIN32)
   set(CMAKE_COMPILE_WARNING_AS_ERROR OFF)
@@ -30,7 +31,7 @@ add_compile_options(-fPIC)
 ################################################################################
 project(
     #[[NAME]]   Qtk
-    VERSION     0.2
+    VERSION     0.3
     DESCRIPTION "Qt OpenGL library and desktop application."
     LANGUAGES   CXX C
 )
@@ -47,18 +48,10 @@ include(GNUInstallDirs)
 ################################################################################
 option(QTK_DEBUG "Enable debugger" OFF)
 option(QTK_SUBMODULES "Update external project (assimp) submodule" OFF)
-option(QTK_GUI "Build the Qtk desktop application" ON)
-option(QTK_PLUGINS "Install Qtk plugins to Qt Creator path." OFF)
 option(QTK_EXAMPLE "Build the Qtk example desktop application" ON)
 option(QTK_CCACHE "Enable ccache" ON)
-
-if (QTK_CCACHE)
-  set(CMAKE_CXX_COMPILER_LAUNCHER ccache)
-endif()
-
 # Install Qtk for use within Qt Creator projects only, instead of system-wide.
 option(QTK_PREFIX_QTCREATOR "Install Qtk to Qt Creator. Untested." OFF)
-
 # Option for bringing your own assimp installation; Otherwise not needed
 # + If assimp is available system-wide we can just set QTK_SUBMODULES OFF
 option(
@@ -67,6 +60,18 @@ option(
     OFF
 )
 
+# Qtk Component Options
+option(QTK_PLUGINS "Install Qtk plugins to Qt Designer path." OFF)
+# Options for qtk_gui
+option(QTK_GUI "Build the Qtk desktop application" ON)
+option(QTK_GUI_SCENE
+    "Fetch model resources and build the GUI with an example scene." OFF
+)
+
+if (QTK_CCACHE)
+  set(CMAKE_CXX_COMPILER_LAUNCHER ccache)
+endif()
+
 if(QTK_DEBUG OR CMAKE_BUILD_TYPE MATCHES "^[Dd][Ee][Bb][Uu][Gg]$")
   set(QTK_DEBUG ON)
   set(CMAKE_BUILD_TYPE Debug)
@@ -184,8 +189,8 @@ endif()
 add_subdirectory(src)
 
 if(QTK_EXAMPLE)
-  # Create a namespaced alias for linking with qtk_library in the example.
-  add_library(${PROJECT_NAME}::qtk_library ALIAS qtk_library)
+  # Create a namespaced alias for linking with libqtk in the example.
+  add_library(${PROJECT_NAME}::qtk ALIAS qtk)
   add_subdirectory(example-app EXCLUDE_FROM_ALL)
 endif()
 
@@ -200,3 +205,25 @@ foreach(VAR_NAME IN LISTS VAR_NAMES VAR_PATHS)
     message(STATUS "[Qtk] ${VAR_NAME}=${${VAR_NAME}}")
   endif()
 endforeach()
+message(STATUS "[Qtk] Installation prefix: ${CMAKE_INSTALL_PREFIX}")
+message(STATUS "[Qtk] Found Qt6: ${Qt6Core_VERSION}")
+
+# qt_generate_deploy_app_script is supported on Linux in QtCore >= 6.5.0.
+# qt_generate_deploy_app_script supports Windows and OSX in QtCore >= 6.3.
+# https://doc.qt.io/qt-6.5/qt-generate-deploy-app-script.html
+# https://doc.qt.io/archives/qt-6.4/qt-generate-deploy-app-script.html
+# The application can still build and run, we just can't install.
+if(QTK_GUI OR QTK_EXAMPLE)
+  if(UNIX AND NOT APPLE)
+    # Ubuntu 24.04 provides QtCore 6.4.2 in qt-base-dev.
+    # This version of qt_generate_deploy_app_script does not support Linux.
+    if (Qt6_VERSION VERSION_LESS "6.5.0")
+      message(WARNING "[Qtk] Installation is only supported on Qt >=6.5.\n")
+    endif()
+  elseif(APPLE OR WIN32)
+    # Predates qt_generate_deploy_app_script.
+    if (Qt6_VERSION VERSION_LESS "6.3.0")
+      message(WARNING "[Qtk] Installation is only supported on Qt >=6.5.\n")
+    endif()
+  endif()
+endif()

README.md

@@ -1,13 +1,18 @@
 # Qtk
 
-[![All Builds](https://github.com/shaunrd0/qtk/actions/workflows/all-builds.yml/badge.svg)](https://github.com/shaunrd0/qtk/actions/workflows/all-builds.yml)
+[![All Builds](https://github.com/shaunrd0/qtk/actions/workflows/build.yml/badge.svg)](https://github.com/shaunrd0/qtk/actions/workflows/build.yml)
 [![Linting](https://github.com/shaunrd0/qtk/actions/workflows/linting.yml/badge.svg)](https://github.com/shaunrd0/qtk/actions/workflows/linting.yml)
 
-Qtk is a Qt OpenGL graphics library that wraps some QOpenGL functionality in convenience classes
-that allow rendering geometry in 2D and 3D using custom GLSL shader programs.
-
 The Qtk desktop application provides a model loader using [Assimp](https://assimp.org/) within a Qt widget application.
-You can fly around the scene using WASD while holding down the right mouse button.
+You can fly around the scene using WASD while holding down the left or right mouse button.
+[QtkWidget](./src/designer-plugins/qtkwidget.h) is the primary QOpenGLWidget used to render the scene and handle input.
+
+The underlying shared library [libqtk](./src/qtk) wraps QOpenGL objects in convenience classes that leverage
+lower-level OpenGL APIs to handle the rendering process manually. Many of these classes offer
+ways to expand the low-level OpenGL logic within a Qt application without having to set up much scaffolding.
+
+The Qtk GUI is built using custom [Qt Designer plugins](https://doc.qt.io/qt-6/designer-creating-custom-widgets.html). These can be installed to Qt Designer for
+use in other Qt applications, or built exclusively for Qtk. See [Build Options](#build-options) for more details.
 
 Object names can be double-clicked in the tree view panel for quick camera navigation.
 Properties of the object, like shader code and translation / scale, can be viewed and modified in the side panel.
@@ -24,7 +29,13 @@ detached from the main window in this way.
 The small triangles floating near 3D models represent the light source being used for the shader.
 These appear on models using phong, specular, and diffuse lighting techniques.
 
-The default scene contains basic examples like texture mapping to make a crate from basic cube geometry
+The example scene contains basic examples like texture mapping to make a crate from simple cube geometry.
+This scene is used in the following screenshots, and can be built locally by enabling
+the `QTK_GUI_SCENE` [Build Option](#build-options) described below. Because this scene
+uses large 3D model resources, this option is disabled by default.
+
+The default scene with this option disabled is empty, but comes with a default skybox.
+Models can be added to the scene by clicking and dragging an `.obj` into the scene view.
 
 ![](resources/screenshots/screen-texture.png)
 
@@ -49,51 +60,76 @@ Key features that are planned:
 - [x] Runtime loading of `.obj` or similar 3D models.
 - [x] Drag-and-drop interaction for adding objects to the scene.
 - [x] Shader / object properties panel to modify related settings.
+- [x] Reduce size of application resources and git references.
 - [ ] Runtime reloading of modified GLSL shaders attached to objects within scenes.
 - [ ] Multiple views of a scene at one time.
 - [ ] Camera control modes such as panning, orbiting, or following objects.
 - [ ] Save / load scene data. The current model requires writing C++ code.
 - [ ] Basic text editor for quickly modifying shaders attached to objects.
-- [ ] Reduce size of application resources and git references.
 
-For examples of using the Qtk API, see the `example-app` project in the root of
-this repository.
+For examples of using libqtk, see the [example-app](./example-app)
+project in the root of this repository.
 
 To get textures loading on models look
 into [material files](http://www.paulbourke.net/dataformats/mtl/)
-and see some examples in the `resources/models/` directory.
+and see some examples at [qtk-resources/resources/models](https://git.shaunreed.com/shaunrd0/qtk-resources/src/branch/master/models).
 
 ### Source Builds
 
 Qtk was developed and tested using CLion
 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.
+Simply open the root `CMakeLists.txt` with either of these editors and default
+configurations will be loaded. To simplify providing Qt to the build, Qt Creator
+is the recommended option.
 
-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 6.6.0** 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 have manually installed [Qt6 Open Source Binaries](https://www.qt.io/download-qt-installer)
+for your system, be sure to correctly set your `CMAKE_PREFIX_PATH` in the next steps.
+On Ubuntu 24.04 the default installation directory to use for this path using Qt 6.5.0 is `$HOME/Qt/6.5.0/gcc_64/lib/cmake`.
+
+The Ubuntu apt repositories contain all the packages we need to build all targets.
+To build Qtk desktop application with the scene in the screenshots below run the following commands.
+
+```bash
+sudo apt update && sudo apt install cmake build-essential git ccache libxkbcommon-dev libassimp-dev qt6-base-dev qt6-tools-dev
+cmake -DQTK_GUI_SCENE=ON -B build
+cmake --build build
+./build/bin/qtk_gui
+```
+
+#### Build Options
+
+Qtk is composed of three separate components.
+
+* The shared library [libqtk](./src/qtk) provides classes that leverage QOpenGL functionality
+while still using lower-level OpenGL APIs to customize the rendering process.
+Many of these classes can be further expanded, such as [Qtk::Scene](./src/qtk/scene.h).
+This taget, `qtk` in cmake, is always selected to build and install as
+it is required by all other components in this project.
+* The [Qtk desktop application](./src/app) is built using libqtk within a Qt application.
+This target, `qtk_gui` in cmake, is optional and can be controlled using the `QTK_GUI` option below.
+* The GUI for the Qtk desktop application is constructed using a [custom set of Qt Designer widget plugins](./src/designer-plugins) that are also built using libqtk.
+If `QTK_GUI` is disabled this target (`qtk_plugins`) is optional and can be controlled using the `QTK_PLUGINS` options below.
+
+
+| Name                     | Description                                                  | Default |
+|--------------------------|--------------------------------------------------------------|:--------|
+| QTK_DEBUG                | Enable debug mode.                                           | OFF     |
+| QTK_SUBMODULES           | Use git submodules to fetch assimp dependency.               | OFF     |
+| QTK_EXAMPLE              | Build the libqtk example desktop application.                | ON      |
+| QTK_CCACHE               | Enable CCACHE.                                               | ON      |
+| QTK_ASSIMP_NEW_INTERFACE | Use the assimp::assimp interface. Recommended for WIN / OSX. | OFF     |
+| QTK_PLUGINS*             | Install Qtk plugins to Qt Designer.                          | OFF     |
+| QTK_GUI                  | Build and install Qtk desktop application.                   | ON      |
+| QTK_GUI_SCENE            | Fetch external 3D model resources for example scene.         | OFF     |
+
+*The Qtk plugins are always built if `QTK_GUI` is enabled. Disabling this option
+with QTK_GUI set will not mark the plugins for installation if we do
+`cmake --install build/` without selecting a component. If both `QTK_GUI` and
+`QTK_PLUGINS` are unset, neither will be built.
 
 If you are building on **Windows / Mac**, consider setting
 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 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/6.6.0/gcc_64
-# Build all targets
-cmake --build build-all/
-````
-
 By default, the build will not initialize Assimp as a git submodule and build
 from source.
 We can turn this on by setting the `-DQTK_SUBMODULES=ON` flag when running
@@ -101,47 +137,57 @@ CMake.
 Building using this option will fetch and build Assimp for us, but builds will
 take longer as a result.
 Using `-DQTK_SUBMODULES=ON` supports providing assimp on cross-platform builds (
-Windows / Mac / Linux) and may be easier
-to configure.
+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/6.6.0/gcc_64
 ```
 
-#### Qtk GUI
+#### Qtk Components
+
+As described in [Build Options](#build-options), Qtk is composed of three separate components.
+Each component can be individually selected for building or installation.
+
+For this example we will configure the build with all options enabled.
+In the separate sections below we can install individual components with cmake.
 
 ```bash
-cmake --build build-all/ --target qtk_gui -- -j $(nproc)
-# Install Qtk desktop application (output removed)
-# Installation prefix path must be absolute, since Qtk uses Qt deploy tools.
-cmake --install build-all/ --component qtk_gui --prefix=$(pwd)/install
-./install/bin/qtk_gui
-```
+sudo apt update -y && sudo apt install cmake build-essential git ccache libxkbcommon-dev libassimp-dev qt6-base-dev qt6-tools-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/6.6.0/gcc_64
+# Build all targets
+cmake --build build-all/
+````
 
-If any errors are encountered loading plugins, we can debug plugin loading by
-setting the following environment variable -
+Now that we have all the components fully built, the following sections will
+install each component individually.
+If you want to uninstall previously installed components, run the following command.
 
 ```bash
-QT_DEBUG_PLUGINS=1 ./install/bin/qtk_gui
+sudo xargs rm -v < install_manifest.txt
 ```
 
-#### Qtk Library
+##### Qtk Library
 
-Qtk provides a simple library for working with QOpenGL.
+Shared libqtk library for working with lower-level OpenGL to customize the rendering process.
 We can install this library on a system path or a custom path and then
 set `CMAKE_PREFIX_PATH` to point to this location when building an application
 using libqtk.
 
+Here we will install to the `/usr/local/` path.
+
 ```bash
 # Install libqtk only
-cmake --build build-all/ --target qtk_library -- -j $(nproc)
-cmake --install build-all/ --component qtk_library --prefix=/usr/local
+cmake --build build-all/ --target qtk -- -j $(nproc)
+cmake --install build-all/ --component qtk --prefix=/usr/local
 -- Install configuration: "Release"
 -- Installing: /usr/local/lib/cmake/Qtk/QtkConfig.cmake
 -- Installing: /usr/local/lib/cmake/Qtk/QtkConfigVersion.cmake
 -- Installing: /usr/local/lib/cmake/Qtk/QtkTargets.cmake
 -- Installing: /usr/local/lib/cmake/Qtk/QtkTargets-release.cmake
--- Installing: /usr/local/lib/static/libqtk_library.a
+-- Installing: /usr/local/lib/static/libqtk.a
 -- Installing: /usr/local/include/qtk/camera3d.h
 -- Installing: /usr/local/include/qtk/input.h
 -- Installing: /usr/local/include/qtk/meshrenderer.h
@@ -158,7 +204,26 @@ cmake --install build-all/ --component qtk_library --prefix=/usr/local
 -- Installing: /usr/local/include/qtk/transform3D.h
 ```
 
-#### Qtk Plugin Collection
+##### Qtk GUI
+
+The Qtk desktop application can be built and installed with the following commands.
+
+```bash
+cmake --build build-all/ --target qtk_gui -- -j $(nproc)
+# Install Qtk desktop application (output removed)
+# Installation prefix path must be absolute, since Qtk uses Qt deploy tools.
+cmake --install build-all/ --component qtk_gui --prefix=$(pwd)/install
+./install/bin/qtk_gui
+```
+
+If any errors are encountered loading plugins, we can debug plugin loading by
+setting the following environment variable
+
+```bash
+QT_DEBUG_PLUGINS=1 ./install/bin/qtk_gui
+```
+
+##### Qtk Plugin Collection
 
 This project defines a collection of widget plugins for use with Qt Designer.
 These plugins were used to build the interface for the Qtk desktop application.
@@ -179,19 +244,12 @@ 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/6.6.0/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.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/6.6.0/gcc_64/../../Tools/QtCreator/lib/Qt/plugins/designer/libqtk_collection.so
 ```
 
-To uninstall after a previous installation, we can run the following command
-from the root of the repository.
-
-```bash
-xargs rm < build/install_manifest.txt
-```
-
-#### Qtk Example
+#### Example libqtk Application
 
 There is a simple example of using libqtk in the [example-app/](example-app)
 directory. The example can be built standalone using `find_package` or as a
@@ -213,7 +271,7 @@ This project is using `clang-format` version `>=15.0.5`.
 On Ubuntu 24.04, clang-format 18 is available to install in apt repositories.
 
 ```bash
-sudo apt install clang-format
+sudo apt install clang-format clang-tidy
 ```
 
 If `clang-format --version` is any earlier than `15.0.0`, running `clang-format` will fail because this project uses configuration options made available since `15.0.0`.
@@ -238,14 +296,18 @@ If you'd still like to run these tools manually, see the instructions below.
 cd qtk
 # Build
 cmake -B build && cmake --build build -- -j $(nproc)
-clang-tidy -p build/ --fix --config-file=.clang-tidy src/**/*.cpp src/**/*.h example-app/*.cpp example-app/*.h
+```
+
+```bash
+export SOURCES=src/**/*.cpp src/**/*.h example-app/*.cpp example-app/*.h
+run-clang-tidy -p build/ -j $(nproc --ignore=1) -fix -config-file=.clang-tidy $SOURCES
 ```
 
 Last we need to run `clang-format`, this can be done with the command directly.
 This will reformat all the code in the repository.
 
 ```bash
-clang-format -i --style=file:.clang-format src/**/*.cpp src/**/*.h example-app/*.cpp example-app/*.h
+clang-format -i --style=file:.clang-format $SOURCES
 ```
 
 `clang-format` can be run with git integration (or CLion if you prefer).

example-app/CMakeLists.txt

@@ -2,7 +2,7 @@
 ## Example client project using qtk                                           ##
 ##                                                                            ##
 ## Author: Shaun Reed | Contact: shaunrd0@gmail.com | URL: www.shaunreed.com  ##
-## All Content (c) 2023 Shaun Reed, all rights reserved                       ##
+## All Content (c) 2025 Shaun Reed, all rights reserved                       ##
 ################################################################################
 cmake_minimum_required(VERSION 3.23)
 
@@ -56,8 +56,8 @@ endif()
 
 # Allow add_subdirectory on this project to use target ALIAS if available.
 # If this example project is opened standalone we will use find_package.
-if(NOT TARGET Qtk::qtk_library)
-  find_package(Qtk 0.2 REQUIRED)
+if(NOT TARGET Qtk::qtk)
+  find_package(Qtk 0.3 REQUIRED)
 endif()
 
 find_package(Qt6 COMPONENTS Core Widgets OpenGLWidgets REQUIRED)
@@ -77,9 +77,13 @@ configure_file(
 
 qt_add_executable(qtk_example ${EXAMPLE_SOURCES})
 target_link_libraries(qtk_example PUBLIC Qt6::Widgets Qt6::OpenGLWidgets Qt6::Core)
-target_link_libraries(qtk_example PUBLIC Qtk::qtk_library)
+target_link_libraries(qtk_example PUBLIC Qtk::qtk)
 target_include_directories(qtk_example PRIVATE "${CMAKE_CURRENT_BINARY_DIR}")
 
+# qt_generate_deploy_app_script supports Windows and OSX in QtCore >= 6.3.
+# qt_generate_deploy_app_script is supported on Linux in QtCore >= 6.5.0.
+if((Qt6_VERSION VERSION_GREATER_EQUAL "6.3.0" AND (WIN32 OR APPLE))
+    OR Qt6_VERSION VERSION_GREATER_EQUAL "6.5.0")
   install(
       TARGETS qtk_example
       COMPONENT qtk_example
@@ -94,3 +98,6 @@ qt_generate_deploy_app_script(
       NO_UNSUPPORTED_PLATFORM_ERROR
   )
   install(SCRIPT ${QTK_EXAMPLE_DEPLOY_SCRIPT} COMPONENT qtk_example)
+elseif(NOT Qtk_IS_TOP_LEVEL)
+  message(WARNING "[Qtk] Installation is only supported on Qt >=6.5.\n")
+endif()

example-app/examplescene.cpp

@@ -22,12 +22,7 @@ ExampleScene::~ExampleScene() = default;
 
 void ExampleScene::init()
 {
-  setSkybox(new Qtk::Skybox("Skybox"));
-
-  std::string spartanPath = QTK_EXAMPLE_SOURCE_DIR;
-  spartanPath += "/../resources/models/spartan/spartan.obj";
-  auto spartan = addObject(new Model("spartan", spartanPath.c_str()));
-  spartan->getTransform().setTranslation(-4.0f, 0.0f, 0.0f);
+  setSkybox(new Qtk::Skybox);
 
   auto mesh = addObject(
       new Qtk::MeshRenderer("rightTriangle", Triangle(QTK_DRAW_ELEMENTS)));

resources/icons/win/win-icons.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 # $1: Input path to an image to use for generating icons.
-# Helper script to generate qtk's icons for OSX given a path to an input PNG.
+# Helper script to generate qtk's icons for Windows given a path to an input PNG.
 sudo apt install imagemagick
 
 # For the NSIS (un)installer executable shortcut icon.

resources/minimal_resources.qrc

@@ -0,0 +1,21 @@
+<RCC>
+    <qresource prefix="/textures">
+        <file alias="crate.png">images/crate.png</file>
+        <file alias="stone.png">images/stone.png</file>
+        <file alias="wood.png">images/wood.png</file>
+        <file>skybox/back.png</file>
+        <file>skybox/bottom.png</file>
+        <file>skybox/front.png</file>
+        <file>skybox/left.png</file>
+        <file>skybox/right.png</file>
+        <file>skybox/top.png</file>
+    </qresource>
+    <qresource prefix="/icons">
+        <file>fontawesome-free-6.2.1-desktop/svgs/solid/cube.svg</file>
+        <file>fontawesome-free-6.2.1-desktop/svgs/regular/trash-can.svg</file>
+        <file>fontawesome-free-6.2.1-desktop/svgs/regular/folder-open.svg</file>
+        <file>fontawesome-free-6.2.1-desktop/svgs/regular/floppy-disk.svg</file>
+        <file>fontawesome-free-6.2.1-desktop/svgs/brands/git-alt.svg</file>
+        <file alias="icon.png">icons/icon.png</file>
+    </qresource>
+</RCC>

resources/models/alien-hominid/alien.mtl

@@ -1,55 +0,0 @@
-# Blender MTL File: 'None'
-# Material Count: 4
-
-newmtl AlienHominid
-Ns 225.000000
-Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.533344 0.000000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Bump normal.png
-map_Kd diffuse.png
-map_Ns roughness.png
-refl specular.png
-
-newmtl Blaster
-Ns 225.000000
-Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Bump blaster_normal.png
-map_Kd blaster_diffuse.png
-map_Ke blaster_emissive.png
-map_Ns blaster_roughness.png
-refl blaster_specular.png
-
-newmtl Screenshot_2021-04-19_194508
-Ns 225.000000
-Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd smoke.png
-map_d smoke.png
-
-newmtl Untitled-1
-Ns 77.904748
-Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd Untitled-1.png
-map_d Untitled-1.png

resources/models/backpack/backpack.mtl

@@ -1,16 +0,0 @@
-# Blender MTL File: 'None'
-# Material Count: 1
-
-newmtl Scene_-_Root
-Ns 225.000000
-Ka 1.000000 1.000000 1.000000
-Kd 0.800000 0.800000 0.800000
-Ks 0.500000 0.500000 0.500000
-Ke 0.0 0.0 0.0
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd diffuse.jpg
-map_Bump normal.png
-map_Ks specular.jpg
-

resources/models/backpack/source_attribution.txt

@@ -1,3 +0,0 @@
-Model by Berk Gedik, from: https://sketchfab.com/3d-models/survival-guitar-backpack-low-poly-799f8c4511f84fab8c3f12887f7e6b36
-
-Modified material assignment (Joey de Vries) for easier load in OpenGL model loading chapter, and renamed albedo to diffuse and metallic to specular to match non-PBR lighting setup.

resources/models/bird/bird.mtl

@@ -1,7 +0,0 @@
-newmtl material_0
-map_bump normal.jpg
-norm normal.jpg
-map_Kd diffuse.jpg
-occlusion occlusion.jpg
-Pm 0
-Pr 0.793152

resources/models/floor.obj

@@ -1,12 +0,0 @@
-# Blender v2.82 (sub 7) OBJ File: ''
-# www.blender.org
-mtllib floor.mtl
-o floor
-v -1.000000 -0.000000 1.000000
-v 1.000000 -0.000000 1.000000
-v 1.000000 0.000000 -1.000000
-v -1.000000 0.000000 -1.000000
-vn 0.0000 1.0000 0.0000
-usemtl Default_OBJ
-s off
-f 1//1 2//1 3//1 4//1

resources/models/scythe/scythe.mtl

@@ -1,8 +0,0 @@
-# WaveFront *.mtl file (generated by CINEMA 4D)
-
-newmtl item/objectcomponents/weapon/staff_2h_artifactdeadwind_d_03.m2_Geoset_000
-Ka 0.25 0.25 0.25
-Kd 1 1 1
-map_Kd diffuse.png
-illum 7
-

resources/models/spartan/spartan.mtl

@@ -1,104 +0,0 @@
-# Blender MTL File: 'None'
-# Material Count: 8
-
-newmtl Spartan_Arms_Mat
-Ns 179.999996
-Ka 1.000000 1.000000 1.000000
-Kd 1.000000 1.000000 1.000000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd Spartan_Arms_Mat_BaseColor.png
-map_Bump Spartan_Arms_Mat_Normal.png
-refl Spartan_Arms_Mat_Specular.png
-
-
-newmtl Spartan_Chest_Mat
-Ns 179.999996
-Ka 1.000000 1.000000 1.000000
-Kd 1.000000 1.000000 1.000000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd Spartan_Chest_Mat_BaseColor.png
-map_Bump Spartan_Chest_Mat_Normal.png
-refl Spartan_Chest_Mat_Specular.png
-
-newmtl Spartan_Ear_Mat
-Ns 179.999996
-Ka 1.000000 1.000000 1.000000
-Kd 1.000000 1.000000 1.000000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd Spartan_Ears_Mat_BaseColor.png
-map_Bump Spartan_Ears_Mat_Normal.png
-refl Spartan_Ears_Mat_Specular.png
-
-newmtl Spartan_Helmet_Mat
-Ns 179.999996
-Ka 1.000000 1.000000 1.000000
-Kd 1.000000 1.000000 1.000000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd Spartan_Helmet_Mat_BaseColor.png
-map_Bump Spartan_Helmet_Mat_Normal.png
-refl Spartan_Helmet_Mat_Specular.png
-
-newmtl Spartan_Legs_Mat
-Ns 179.999996
-Ka 1.000000 1.000000 1.000000
-Kd 1.000000 1.000000 1.000000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd Spartan_Legs_Mat_BaseColor.png
-map_Bump Spartan_Legs_Mat_Normal.png
-refl Spartan_Legs_Mat_Specular.png
-
-newmtl Spartan_Shoulders_Mat
-Ns 179.999996
-Ka 1.000000 1.000000 1.000000
-Kd 1.000000 1.000000 1.000000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd Spartan_Shoulder_Mat_BaseColor.png
-map_Bump Spartan_Shoulder_Mat_Normal.png
-refl Spartan_Shoulder_Mat_Specular.png
-
-newmtl Spartan_Undersuit_Mat
-Ns 179.999996
-Ka 1.000000 1.000000 1.000000
-Kd 1.000000 1.000000 1.000000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2
-map_Kd Spartan_Undersuit_Mat_BaseColor.png
-map_Bump Spartan_Undersuit_Mat_Normal.png
-refl Spartan_Undersuit_Mat_Specular.png
-
-newmtl lambert1
-Ns 179.999996
-Ka 1.000000 1.000000 1.000000
-Kd 0.500000 0.500000 0.500000
-Ks 0.500000 0.500000 0.500000
-Ke 0.000000 0.000000 0.000000
-Ni 1.450000
-d 1.000000
-illum 2

resources/resources.qrc

@@ -1,6 +1,5 @@
 <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>
@@ -28,8 +27,6 @@
         <file alias="solid.vert">shaders/vertex/solid.vert</file>
         <file alias="solid-perspective.frag">shaders/fragment/solid-perspective.frag</file>
         <file alias="solid-perspective.vert">shaders/vertex/solid-perspective.vert</file>
-        <file alias="multi-color.frag">shaders/fragment/multi-color.frag</file>
-        <file alias="multi-color.vert">shaders/vertex/multi-color.vert</file>
         <file alias="rgb-normals.frag">shaders/fragment/rgb-normals.frag</file>
         <file alias="rgb-normals.vert">shaders/vertex/rgb-normals.vert</file>
         <file alias="texture-cubemap.frag">shaders/fragment/texture-cubemap.frag</file>
@@ -44,88 +41,9 @@
         <file alias="solid-specular.vert">shaders/vertex/solid-specular.vert</file>
         <file alias="solid-phong.frag">shaders/fragment/solid-phong.frag</file>
         <file alias="solid-phong.vert">shaders/vertex/solid-phong.vert</file>
-        <file alias="model-basic.frag">shaders/fragment/model-basic.frag</file>
-        <file alias="model-basic.vert">shaders/vertex/model-basic.vert</file>
         <file alias="model-phong.frag">shaders/fragment/model-phong.frag</file>
         <file alias="model-phong.vert">shaders/vertex/model-phong.vert</file>
         <file alias="model-normals.frag">shaders/fragment/model-normals.frag</file>
         <file alias="model-normals.vert">shaders/vertex/model-normals.vert</file>
-        <file alias="skybox.frag">skybox/skybox.frag</file>
-        <file alias="skybox.vert">skybox/skybox.vert</file>
-    </qresource>
-    <qresource prefix="/models">
-        <file>models/spartan/spartan.obj</file>
-        <file>models/alien-hominid/alien.obj</file>
-        <file>models/spartan/spartan.mtl</file>
-        <file>models/spartan/Spartan_Ears_Mat_BaseColor.png</file>
-        <file>models/spartan/Spartan_Undersuit_Mat_Specular.png</file>
-        <file>models/spartan/Spartan_Undersuit_Mat_Roughness.png</file>
-        <file>models/spartan/Spartan_Undersuit_Mat_Normal.png</file>
-        <file>models/spartan/Spartan_Undersuit_Mat_Metallic.png</file>
-        <file>models/spartan/Spartan_Undersuit_Mat_BaseColor.png</file>
-        <file>models/spartan/Spartan_Undersuit_Mat_AO.png</file>
-        <file>models/spartan/Spartan_Shoulder_Mat_Specular.png</file>
-        <file>models/spartan/Spartan_Shoulder_Mat_Roughness.png</file>
-        <file>models/spartan/Spartan_Shoulder_Mat_Normal.png</file>
-        <file>models/spartan/Spartan_Shoulder_Mat_Metallic.png</file>
-        <file>models/spartan/Spartan_Shoulder_Mat_BaseColor.png</file>
-        <file>models/spartan/Spartan_Shoulder_Mat_AO.png</file>
-        <file>models/spartan/Spartan_Legs_Mat_Specular.png</file>
-        <file>models/spartan/Spartan_Legs_Mat_Roughness.png</file>
-        <file>models/spartan/Spartan_Legs_Mat_Normal.png</file>
-        <file>models/spartan/Spartan_Legs_Mat_Metallic.png</file>
-        <file>models/spartan/Spartan_Legs_Mat_BaseColor.png</file>
-        <file>models/spartan/Spartan_Legs_Mat_AO.png</file>
-        <file>models/spartan/Spartan_Helmet_Mat_Specular.png</file>
-        <file>models/spartan/Spartan_Helmet_Mat_Roughness.png</file>
-        <file>models/spartan/Spartan_Helmet_Mat_Normal.png</file>
-        <file>models/spartan/Spartan_Helmet_Mat_Metallic.png</file>
-        <file>models/spartan/Spartan_Helmet_Mat_BaseColor.png</file>
-        <file>models/spartan/Spartan_Helmet_Mat_AO.png</file>
-        <file>models/spartan/Spartan_Ears_Mat_Specular.png</file>
-        <file>models/spartan/Spartan_Ears_Mat_Roughness.png</file>
-        <file>models/spartan/Spartan_Ears_Mat_Normal.png</file>
-        <file>models/spartan/Spartan_Ears_Mat_Metallic.png</file>
-        <file>models/spartan/Spartan_Ears_Mat_AO.png</file>
-        <file>models/spartan/Spartan_Chest_Mat_Specular.png</file>
-        <file>models/spartan/Spartan_Chest_Mat_Roughness.png</file>
-        <file>models/spartan/Spartan_Chest_Mat_Normal.png</file>
-        <file>models/spartan/Spartan_Chest_Mat_Metallic.png</file>
-        <file>models/spartan/Spartan_Chest_Mat_BaseColor.png</file>
-        <file>models/spartan/Spartan_Chest_Mat_AO.png</file>
-        <file>models/spartan/Spartan_Arms_Mat_Specular.png</file>
-        <file>models/spartan/Spartan_Arms_Mat_Roughness.png</file>
-        <file>models/spartan/Spartan_Arms_Mat_Normal.png</file>
-        <file>models/spartan/Spartan_Arms_Mat_Metallic.png</file>
-        <file>models/spartan/Spartan_Arms_Mat_BaseColor.png</file>
-        <file>models/spartan/Spartan_Arms_Mat_AO.png</file>
-        <file>models/spartan/lambert1_Roughness.png</file>
-        <file>models/spartan/lambert1_Nrm.png</file>
-        <file>models/spartan/lambert1_Colour-Opacity.png</file>
-        <file>models/backpack/specular.jpg</file>
-        <file>models/backpack/roughness.jpg</file>
-        <file>models/backpack/diffuse.jpg</file>
-        <file>models/backpack/normal.png</file>
-        <file>models/backpack/backpack.obj</file>
-        <file>models/backpack/backpack.mtl</file>
-        <file>models/backpack/ao.jpg</file>
-        <file>models/alien-hominid/specular.png</file>
-        <file>models/alien-hominid/roughness.png</file>
-        <file>models/alien-hominid/normal.png</file>
-        <file>models/alien-hominid/diffuse.png</file>
-        <file>models/alien-hominid/blaster_specular.png</file>
-        <file>models/alien-hominid/blaster_roughness.png</file>
-        <file>models/alien-hominid/blaster_normal.png</file>
-        <file>models/alien-hominid/blaster_emissive.png</file>
-        <file>models/alien-hominid/blaster_diffuse.png</file>
-        <file>models/alien-hominid/alien.mtl</file>
-        <file>models/scythe/scythe.obj</file>
-        <file>models/scythe/scythe.mtl</file>
-        <file>models/scythe/diffuse.png</file>
-        <file>models/bird/occlusion.jpg</file>
-        <file>models/bird/normal.jpg</file>
-        <file>models/bird/diffuse.jpg</file>
-        <file>models/bird/bird.obj</file>
-        <file>models/bird/bird.mtl</file>
     </qresource>
 </RCC>

resources/shaders/fragment/model-basic.frag

@@ -1,11 +0,0 @@
-#version 330 core
-out vec4 fColor;
-
-in vec2 vTextureCoord;
-
-uniform sampler2D texture_diffuse1;
-
-void main()
-{
-    fColor = texture(texture_diffuse1, vTextureCoord);
-}

resources/shaders/fragment/multi-color.frag

@@ -1,9 +0,0 @@
-#version 330
-in vec4 vColor;
-
-out vec4 fColor;
-
-void main()
-{
-  fColor = vColor;
-}

resources/shaders/vertex/model-basic.vert

@@ -1,16 +0,0 @@
-#version 330 core
-layout (location = 0) in vec3 aPosition;
-layout (location = 1) in vec3 aNormal;
-layout (location = 2) in vec2 aTextureCoord;
-
-out vec2 vTextureCoord;
-
-uniform mat4 uModel;
-uniform mat4 uView;
-uniform mat4 uProjection;
-
-void main()
-{
-    vTextureCoord = aTextureCoord;
-    gl_Position = uProjection * uView * uModel * vec4(aPosition, 1.0);
-}

resources/shaders/vertex/multi-color.vert

@@ -1,16 +0,0 @@
-#version 330
-layout(location = 0) in vec3 aPosition;
-layout(location = 1) in vec3 aColor;
-
-out vec4 vColor;
-
-uniform mat4 uModel;  // Model
-uniform mat4 uView; // View
-uniform mat4 uProjection;  // Projection
-
-void main()
-{
-  gl_Position = uProjection * uView * uModel * vec4(aPosition, 1.0);
-
-  vColor = vec4(aColor, 1.0f);
-}

resources/skybox/skybox.frag

@@ -1,9 +0,0 @@
-#version 330
-uniform samplerCube uTexture;
-
-varying vec3 vTexCoord;
-
-void main()
-{
-  gl_FragColor = texture(uTexture, vTexCoord);
-}

resources/skybox/skybox.vert

@@ -1,15 +0,0 @@
-#version 330
-layout(location = 0) in vec3 aPosition;
-
-out vec3 vTexCoord;
-
-uniform mat4 uProjectionMatrix;
-uniform mat4 uViewMatrix;
-
-void main()
-{
-  // Strip translation column from camera's 4x4 matrix
-  mat4 view = mat4(mat3(uViewMatrix));
-  gl_Position = uProjectionMatrix * view * vec4(aPosition, 1.0);
-  vTexCoord = aPosition;
-}

src/CMakeLists.txt

@@ -2,7 +2,7 @@
 ## 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                       ##
+## All Content (c) 2025 Shaun Reed, all rights reserved                       ##
 ################################################################################
 
 # Qtk Library
@@ -13,22 +13,22 @@ install(
     FILES
     "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}Config.cmake"
     "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake"
-    COMPONENT qtk_library
+    COMPONENT qtk
     DESTINATION lib/cmake/${PROJECT_NAME}
 )
 install(
     EXPORT qtk_export
     FILE ${PROJECT_NAME}Targets.cmake
     NAMESPACE ${PROJECT_NAME}::
-    COMPONENT qtk_library
+    COMPONENT qtk
     DESTINATION lib/cmake/${PROJECT_NAME}
 )
-# System install for qtk_library
+# System install for libqtk
 install(
-    TARGETS qtk_library
-    # Associate qtk_library target with qtk-export
+    TARGETS qtk
+    # Associate libqtk target with qtk-export
     EXPORT qtk_export
-    COMPONENT qtk_library
+    COMPONENT qtk
     FILE_SET HEADERS DESTINATION include
     INCLUDES DESTINATION include
     LIBRARY DESTINATION lib
@@ -36,60 +36,16 @@ install(
     RUNTIME DESTINATION bin
 )
 
-# Qtk Application
-if(QTK_GUI OR QTK_PLUGINS)
-  add_subdirectory(app)
-endif()
-
-if(QTK_PLUGINS)
-  install(
-      TARGETS qtk_plugins qtk_library qtk_plugin_library
-      COMPONENT qtk_plugins
-      LIBRARY DESTINATION "${QTK_PLUGIN_INSTALL_DIR}"
-      ARCHIVE DESTINATION "${QTK_PLUGIN_INSTALL_DIR}"
-      RUNTIME DESTINATION "${QTK_PLUGIN_INSTALL_DIR}"
-  )
+# The Qtk Application's GUI requires plugins to be built, but not installed.
+# If both are disabled we can skip. If QTK_PLUGINS is set we'll install the
+# plugins to Qt Designer for use in other projects.
+if(QTK_PLUGINS OR QTK_GUI)
+  add_subdirectory(designer-plugins)
 endif()
 
+# Build Qtk Application only if QTK_GUI is set.
 if(QTK_GUI)
-  install(
-      TARGETS qtk_gui
-      COMPONENT qtk_gui
-      BUNDLE DESTINATION .
-      LIBRARY DESTINATION lib
-      ARCHIVE DESTINATION lib
-      RUNTIME DESTINATION bin
-  )
-
-  qt_generate_deploy_app_script(
-      TARGET qtk_gui
-      OUTPUT_SCRIPT QTK_DEPLOY_SCRIPT
-      NO_UNSUPPORTED_PLATFORM_ERROR
-  )
-  install(SCRIPT ${QTK_DEPLOY_SCRIPT} COMPONENT qtk_gui)
-
-  if(WIN32)
-    if(MSVC AND TARGET Qt6::qmake)
-      get_target_property(QT6_QMAKE_LOCATION Qt6::qmake IMPORTED_LOCATION)
-      execute_process(
-          COMMAND "${QT6_QMAKE_LOCATION}" -query QT_INSTALL_PREFIX
-          RESULT_VARIABLE return_code
-          OUTPUT_VARIABLE QT6_INSTALL_PREFIX
-          OUTPUT_STRIP_TRAILING_WHITESPACE
-      )
-      file(TO_NATIVE_PATH "${QT6_INSTALL_PREFIX}/bin" QT6_INSTALL_PREFIX)
-
-      set(VSUSER_FILE "${CMAKE_CURRENT_BINARY_DIR}/qtk_gui.vcxproj.user")
-      file(WRITE ${VSUSER_FILE} "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n")
-      file(APPEND ${VSUSER_FILE} "<Project xmlns=\"http://schemas.microsoft.com/developer/msbuild/2003\">\n")
-      file(APPEND ${VSUSER_FILE} "  <PropertyGroup>\n")
-      file(APPEND ${VSUSER_FILE} "    <LocalDebuggerEnvironment>Path=$(SolutionDir)\\lib\\$(Configuration);${QT6_INSTALL_PREFIX};$(Path)\n")
-      file(APPEND ${VSUSER_FILE} "$(LocalDebuggerEnvironment)</LocalDebuggerEnvironment>\n")
-      file(APPEND ${VSUSER_FILE} "    <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>\n")
-      file(APPEND ${VSUSER_FILE} "  </PropertyGroup>\n")
-      file(APPEND ${VSUSER_FILE} "</Project>\n")
-    endif()
-  endif()
+  add_subdirectory(app)
 endif()
 
 write_basic_package_version_file(
@@ -119,26 +75,38 @@ set(CPACK_PACKAGE_CONTACT "shaunreed.com")
 set(CPACK_THREADS 0)
 set(CPACK_PACKAGE_INSTALL_DIRECTORY "Qtk")
 
+# Remove any assimp components if defined by submodule.
+if (QTK_SUBMODULES)
+  get_cmake_property(CPACK_COMPONENTS_ALL COMPONENTS)
+  list(FILTER CPACK_COMPONENTS_ALL EXCLUDE REGEX .*assimp.*)
+  list(REMOVE_ITEM CPACK_COMPONENTS_ALL Unspecified)
+endif()
+
 if(WIN32)
   # Windows
   # Set icon for the splash image used in Windows NSIS installers.
-  set(CPACK_PACKAGE_ICON "${QTK_RESOURCES}/icons/win/kilroy_splash.bmp")
+  # TODO: Fix NSIS cmake error
+  # File: "D:/a/qtk/qtk/resources/icons/win/kilroy_splash.bmp" -> no files found.
+  #set(CPACK_PACKAGE_ICON "${QTK_RESOURCES}/icons/win/kilroy_splash.bmp")
   set(CPACK_NSIS_MODIFY_PATH ON)
   set(CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL ON)
   # https://nsis.sourceforge.io/Reference/CreateShortCut
+  # TODO: Use 4th parameter to pass icon.
   set(
       CPACK_NSIS_CREATE_ICONS_EXTRA
-      "CreateShortCut '$SMPROGRAMS\\\\$STARTMENU_FOLDER\\\\Qtk.lnk' '$INSTDIR\\\\bin\\\\qtk_gui.exe'"
+      "CreateShortCut '$SMPROGRAMS\\\\$STARTMENU_FOLDER\\\\Qtk.lnk' '$INSTDIR\\\\bin\\\\qtk_gui.exe'\n\
+       CreateShortCut '$DESKTOP\\\\Qtk.lnk' '$INSTDIR\\\\bin\\\\qtk_gui.exe'"
   )
   set(
       CPACK_NSIS_DELETE_ICONS_EXTRA
-      "Delete '$SMPROGRAMS\\\\$START_MENU\\\\Qtk.lnk'"
+      "Delete '$SMPROGRAMS\\\\$START_MENU\\\\Qtk.lnk'\n\
+       Delete '$DESKTOP\\\\Qtk.lnk'"
   )
 
   # Set icon for the installer executable.
   set(CPACK_NSIS_MUI_ICON "${QTK_RESOURCES}/icons/win/kilroy.ico")
-  # Set icon for uninstaller executable.
-  set(CPACK_NSIS_MUI_UNIICON "${QTK_RESOURCES}/icons/win/kilroy.ico")
+  # Set icon for uninstaller executable to be the same as the installer.
+  set(CPACK_NSIS_MUI_UNIICON "${CPACK_NSIS_MUI_ICON}")
 elseif(APPLE)
   # OSX
   # Set icon for the splash image used in OSX DMG installers.
@@ -147,31 +115,31 @@ elseif(APPLE)
   # Set additional options for the OSX bundle.
   set(CPACK_BUNDLE_NAME ${PROJECT_NAME})
   set(CPACK_BUNDLE_PLIST $<TARGET_BUNDLE_CONTENT_DIR:qtk_gui>/Info.plist)
-  set(CPACK_BUNDLE_ICON ${QTK_OSX_ICONS})
+  set(CPACK_BUNDLE_ICON "${QTK_OSX_ICONS}")
 else(UNIX)
   # Linux
   # Install icons for qtk.
-  install(FILES ${QTK_RESOURCES}/icons/linux/kilroy-16.png
+  install(FILES "${QTK_RESOURCES}/icons/linux/kilroy-16.png"
       DESTINATION /usr/share/icons/hicolor/16x16/apps
       RENAME qtk.png)
-  install(FILES ${QTK_RESOURCES}/icons/linux/kilroy-32.png
+  install(FILES "${QTK_RESOURCES}/icons/linux/kilroy-32.png"
       DESTINATION /usr/share/icons/hicolor/32x32/apps
       RENAME qtk.png)
-  install(FILES ${QTK_RESOURCES}/icons/linux/kilroy-48.png
+  install(FILES "${QTK_RESOURCES}/icons/linux/kilroy-48.png"
       DESTINATION /usr/share/icons/hicolor/48x48/apps
       RENAME qtk.png)
-  install(FILES ${QTK_RESOURCES}/icons/linux/kilroy-64.png
+  install(FILES "${QTK_RESOURCES}/icons/linux/kilroy-64.png"
       DESTINATION /usr/share/icons/hicolor/64x64/apps
       RENAME qtk.png)
-  install(FILES ${QTK_RESOURCES}/icons/linux/kilroy-128.png
+  install(FILES "${QTK_RESOURCES}/icons/linux/kilroy-128.png"
       DESTINATION /usr/share/icons/hicolor/128x128/apps
       RENAME qtk.png)
-  install(FILES ${QTK_RESOURCES}/icons/linux/kilroy-256.png
+  install(FILES "${QTK_RESOURCES}/icons/linux/kilroy-256.png"
       DESTINATION /usr/share/icons/hicolor/256x256/apps
       RENAME qtk.png)
 
   # Install the desktop file for qtk.
-  install(FILES ${QTK_RESOURCES}/qtk.desktop
+  install(FILES "${QTK_RESOURCES}/qtk.desktop"
       DESTINATION /usr/share/applications)
 
   # Set additional options for the debian APT package.
@@ -179,14 +147,6 @@ else(UNIX)
   set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
 endif()
 
-# Remove any assimp components if defined by submodule.
-if (QTK_SUBMODULES)
-  get_cmake_property(CPACK_COMPONENTS_ALL COMPONENTS)
-  list(FILTER CPACK_COMPONENTS_ALL EXCLUDE REGEX .*assimp.*)
-  list(REMOVE_ITEM CPACK_COMPONENTS_ALL Unspecified)
-endif()
-
-# Platform defaults for source bundles.
 if(WIN32)
   set(CPACK_SOURCE_GENERATOR ZIP)
 else()

src/app/CMakeLists.txt

@@ -2,61 +2,44 @@
 ## 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                       ##
+## All Content (c) 2025 Shaun Reed, all rights reserved                       ##
 ################################################################################
 
 ################################################################################
-# Qtk Widget Library
+# Qtk Application
 ################################################################################
-# Create a library of widgets used to build Qtk GUI
-set(
-    QTK_PLUGIN_LIBRARY_SOURCES
-    qtkwidget.cpp
-    debugconsole.cpp debugconsole.ui
-    toolbox.cpp toolbox.ui
-    treeview.cpp treeview.ui
+
+# Build without the example scene if QTK_GUI_SCENE is unset.
+if (QTK_GUI_SCENE)
+  set(QTK_GUI_SOURCES
       qtkmainwindow.cpp qtkmainwindow.h qtkmainwindow.ui
-)
-set(
-    QTK_PLUGIN_LIBRARY_HEADERS
-    qtkwidget.h
-    debugconsole.h
-    toolbox.h
-    treeview.h
-)
-qt_add_library(qtk_plugin_library STATIC EXCLUDE_FROM_ALL)
-target_sources(
-    qtk_plugin_library PRIVATE
-    "${QTK_PLUGIN_LIBRARY_SOURCES}"
-    "${QTK_PLUGIN_LIBRARY_HEADERS}"
-)
-target_link_libraries(qtk_plugin_library PUBLIC Qt6::UiPlugin qtk_library)
-
-################################################################################
-# Qtk Widget Plugins
-################################################################################
-# Create a Qt Designer plugin for a collection of widgets from our library.
-qt_add_plugin(qtk_plugins SHARED)
-target_sources(
-    qtk_plugins PRIVATE
-    widgetplugincollection.cpp widgetplugincollection.h
-    widgetplugin.cpp widgetplugin.h
-)
-target_link_libraries(qtk_plugins PUBLIC qtk_plugin_library)
-
-################################################################################
-# Final Qtk Application
-################################################################################
-
-set(
-    QTK_GUI_SOURCES
+      # This scene will clone a git repository for required 3D models.
       qtkscene.cpp qtkscene.h
       main.cpp
   )
 
+  qt6_add_big_resources(QTK_GUI_SOURCES "${QTK_RESOURCES}/resources.qrc")
+else()
+  # The scene will use a default skybox with no models or examples.
+  # Models can be added by click-and-dragging an .obj into the scene.
+  set(QTK_GUI_SOURCES
+      qtkmainwindow.cpp qtkmainwindow.h qtkmainwindow.ui
+      main.cpp
+  )
+
+  qt6_add_big_resources(
+      QTK_GUI_SOURCES
+      "${QTK_RESOURCES}/minimal_resources.qrc"
+  )
+endif()
+
 qt_add_executable(qtk_gui ${QTK_GUI_SOURCES})
 target_link_libraries(qtk_gui PRIVATE qtk_plugin_library)
 
+if (QTK_GUI_SCENE)
+  target_compile_definitions(qtk_gui PRIVATE -DQTK_GUI_SCENE)
+endif()
+
 if (WIN32)
   set_target_properties(qtk_gui PROPERTIES WIN32_EXECUTABLE TRUE)
 elseif(APPLE)
@@ -64,7 +47,7 @@ elseif(APPLE)
       qtk_gui PROPERTIES
       MACOSX_BUNDLE TRUE
       MACOSX_BUNDLE_BUNDLE_NAME Qtk
-      MACOSX_BUNDLE_ICON_FILE ${QTK_OSX_ICONS}
+      MACOSX_BUNDLE_ICON_FILE "${QTK_OSX_ICONS}"
       MACOSX_BUNDLE_GUI_IDENTIFIER ${CMAKE_PROJECT_NAME}
       MACOSX_BUNDLE_INFO_STRING ${CMAKE_PROJECT_DESCRIPTION}
       MACOSX_BUNDLE_COPYRIGHT ${QTK_COPYRIGHT}
@@ -72,3 +55,46 @@ elseif(APPLE)
       MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
   )
 endif()
+
+# qt_generate_deploy_app_script supports Windows and OSX in QtCore >= 6.3.
+# qt_generate_deploy_app_script is supported on Linux in QtCore >= 6.5.0.
+if((Qt6_VERSION VERSION_GREATER_EQUAL "6.3.0" AND (WIN32 OR APPLE))
+    OR Qt6_VERSION VERSION_GREATER_EQUAL "6.5.0")
+  install(
+      TARGETS qtk_gui
+      COMPONENT qtk_gui
+      BUNDLE DESTINATION .
+      LIBRARY DESTINATION lib
+      ARCHIVE DESTINATION lib
+      RUNTIME DESTINATION bin
+  )
+  qt_generate_deploy_app_script(
+      TARGET qtk_gui
+      OUTPUT_SCRIPT QTK_DEPLOY_SCRIPT
+      NO_UNSUPPORTED_PLATFORM_ERROR
+  )
+  install(SCRIPT ${QTK_DEPLOY_SCRIPT} COMPONENT qtk_gui)
+endif()
+
+if(WIN32)
+  if(MSVC AND TARGET Qt6::qmake)
+    get_target_property(QT6_QMAKE_LOCATION Qt6::qmake IMPORTED_LOCATION)
+    execute_process(
+        COMMAND "${QT6_QMAKE_LOCATION}" -query QT_INSTALL_PREFIX
+        RESULT_VARIABLE return_code
+        OUTPUT_VARIABLE QT6_INSTALL_PREFIX
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+    file(TO_NATIVE_PATH "${QT6_INSTALL_PREFIX}/bin" QT6_INSTALL_PREFIX)
+
+    set(VSUSER_FILE "${CMAKE_CURRENT_BINARY_DIR}/qtk_gui.vcxproj.user")
+    file(WRITE ${VSUSER_FILE} "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n")
+    file(APPEND ${VSUSER_FILE} "<Project xmlns=\"http://schemas.microsoft.com/developer/msbuild/2003\">\n")
+    file(APPEND ${VSUSER_FILE} "  <PropertyGroup>\n")
+    file(APPEND ${VSUSER_FILE} "    <LocalDebuggerEnvironment>Path=$(SolutionDir)\\lib\\$(Configuration);${QT6_INSTALL_PREFIX};$(Path)\n")
+    file(APPEND ${VSUSER_FILE} "$(LocalDebuggerEnvironment)</LocalDebuggerEnvironment>\n")
+    file(APPEND ${VSUSER_FILE} "    <DebuggerFlavor>WindowsLocalDebugger</DebuggerFlavor>\n")
+    file(APPEND ${VSUSER_FILE} "  </PropertyGroup>\n")
+    file(APPEND ${VSUSER_FILE} "</Project>\n")
+  endif()
+endif()

src/app/main.cpp

@@ -9,12 +9,10 @@
 #include <QApplication>
 
 #include "qtkmainwindow.h"
-#include "qtkscene.h"
 
 int main(int argc, char * argv[])
 {
-  Q_INIT_RESOURCE(resources);
-
+  initResources();
   QApplication a(argc, argv);
 
   auto window = MainWindow::getMainWindow();
@@ -24,7 +22,7 @@ int main(int argc, char * argv[])
   // NOTE: We set the scene here and not in QtkMainWindow to detach the scene
   // from the QtkWidget plugin (qtk_plugin_library build target).
   // Once we can save / load scenes, this call, and QtkScene, can be removed.
-  window->getQtkWidget()->setScene(new QtkScene);
+  window->setScene(new AppScene);
 
   window->show();
 

src/app/qtkmainwindow.cpp

@@ -25,6 +25,7 @@ MainWindow::MainWindow(QWidget * parent) : QMainWindow(parent)
   // Initialize static container for all active QtkWidgets
   auto qtkWidgets = findChildren<Qtk::QtkWidget *>();
   for (auto & qtkWidget : qtkWidgets) {
+    qtkWidget->setMainWindow(this);
     // NOTE: Set a temporary scene for the widget to use for initialization.
     // This should be replaced by loading a scene, or creating a new (unsaved)
     // scene when Qtk is opened.
@@ -39,12 +40,24 @@ MainWindow::MainWindow(QWidget * parent) : QMainWindow(parent)
             &Qtk::Scene::sceneUpdated,
             this,
             &MainWindow::refreshScene);
+
+    // Update the ToolBox details panel when an item is double-clicked.
     connect(qtkWidget,
             &Qtk::QtkWidget::objectFocusChanged,
             ui_->qtk__ToolBox,
             &Qtk::ToolBox::updateFocus);
   }
 
+  connect(ui_->actionDelete_Object,
+          &QAction::triggered,
+          this,
+          &MainWindow::deleteObject);
+
+  connect(ui_->actionLoad_Model,
+          &QAction::triggered,
+          this,
+          &MainWindow::loadObject);
+
   // TODO: Fix / use MainWindow in Qt Designer to add these dock widgets.
   // For now we will add them manually, but we should be able to do this in the
   // designer. At the moment if you edit the UI in designer the dock widget
@@ -59,7 +72,7 @@ MainWindow::MainWindow(QWidget * parent) : QMainWindow(parent)
   ui_->menuView->addAction(ui_->qtk__TreeView->toggleViewAction());
 
   // Set the window icon used for Qtk.
-  setWindowIcon(Qtk::getIcon());
+  setWindowIcon(getIcon());
 }
 
 MainWindow::~MainWindow()
@@ -100,3 +113,32 @@ void MainWindow::refreshScene(const QString & sceneName)
   // TODO: Select TreeView using sceneName
   ui_->qtk__TreeView->updateView(getQtkWidget()->getScene());
 }
+
+void MainWindow::deleteObject()
+{
+  if (auto object = ui_->qtk__ToolBox->getObjectFocus(); object != Q_NULLPTR) {
+    auto scene = getQtkWidget()->getScene();
+    switch (object->getType()) {
+      case Qtk::Object::Type::QTK_MESH:
+        scene->removeObject(dynamic_cast<Qtk::MeshRenderer *>(object));
+        ui_->qtk__ToolBox->clearFocus();
+        break;
+      case Qtk::Object::Type::QTK_MODEL:
+        scene->removeObject(dynamic_cast<Qtk::Model *>(object));
+        ui_->qtk__ToolBox->clearFocus();
+        break;
+      default:
+        qDebug() << "Failed to delete model with invalid type";
+        break;
+    }
+  }
+}
+
+void MainWindow::setScene(Qtk::Scene * scene)
+{
+  connect(scene,
+          &Qtk::Scene::sceneUpdated,
+          MainWindow::getMainWindow(),
+          &MainWindow::refreshScene);
+  ui_->qtk__QtkWidget->setScene(scene);
+}

src/app/qtkmainwindow.h

@@ -11,11 +11,10 @@
 
 #include <unordered_map>
 
+#include <QFileDialog>
 #include <QMainWindow>
-#include <QPlainTextEdit>
 
-#include "debugconsole.h"
-#include "qtkwidget.h"
+#include "designer-plugins/debugconsole.h"
 
 namespace Ui
 {
@@ -50,9 +49,40 @@ namespace Ui
  */
 class EmptyScene : public Qtk::Scene
 {
-    void init() override { setSceneName("Empty Scene"); }
+    void init() override
+    {
+      setSkybox(new Qtk::Skybox(":/textures/skybox/right.png",
+                                ":/textures/skybox/top.png",
+                                ":/textures/skybox/front.png",
+                                ":/textures/skybox/left.png",
+                                ":/textures/skybox/bottom.png",
+                                ":/textures/skybox/back.png",
+                                "Skybox"));
+      setSceneName("Empty Scene");
+    }
 };
 
+/*
+ * Conditionally include the QtkScene header if the example is enabled.
+ * Set AppScene type to use in main() for creating the scene.
+ * Define helper function to initialize Qt resources for the application.
+ *    These resources are different based on if the example is enabled.
+ */
+#ifdef QTK_GUI_SCENE
+#include "qtkscene.h"
+using AppScene = QtkScene;
+inline void initResources()
+{
+  Q_INIT_RESOURCE(resources);
+}
+#else
+using AppScene = EmptyScene;
+inline void initResources()
+{
+  Q_INIT_RESOURCE(minimal_resources);
+}
+#endif
+
 /**
  * MainWindow class to provide an example of using a QtkWidget within a Qt
  * window application.
@@ -97,6 +127,16 @@ class MainWindow : public QMainWindow
      */
     Qtk::QtkWidget * getQtkWidget(const QString & name);
 
+    /**
+     * @param scene The new scene to view.
+     */
+    void setScene(Qtk::Scene * scene);
+
+    /**
+     * @return Default icon to use for Qtk desktop application.
+     */
+    static QIcon getIcon() { return QIcon(":/icons/icon.png"); }
+
   public slots:
     /**
      * Trigger a refresh for widgets related to a scene that has been updated.
@@ -104,6 +144,23 @@ class MainWindow : public QMainWindow
      */
     void refreshScene(const QString & sceneName);
 
+
+    /**
+     * Opens a QFileDialog for selecting an object file to load into the scene.
+     */
+    void loadObject()
+    {
+      const QUrl file = QFileDialog::getOpenFileName(
+          this, tr("Load Model"), QDir::homePath(), tr("Object Files (*.obj)"));
+      getQtkWidget()->getScene()->loadModel(file.fileName().replace(".obj", ""),
+                                            file.toString());
+    }
+
+    /**
+     * Deletes the currently selected object from the scene.
+     */
+    void deleteObject();
+
   private:
     /***************************************************************************
      * Private Members

src/app/qtkmainwindow.ui

@@ -222,6 +222,9 @@
    </property>
   </action>
   <action name="actionLoad_Model">
+   <property name="enabled">
+    <bool>true</bool>
+   </property>
    <property name="icon">
     <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>
@@ -234,6 +237,9 @@
    </property>
   </action>
   <action name="actionDelete_Object">
+   <property name="enabled">
+    <bool>true</bool>
+   </property>
    <property name="icon">
     <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>
@@ -310,19 +316,19 @@
   <customwidget>
    <class>Qtk::QtkWidget</class>
    <extends>QOpenGLWidget</extends>
-   <header>qtkwidget.h</header>
+   <header>designer-plugins/qtkwidget.h</header>
    <container>1</container>
   </customwidget>
   <customwidget>
    <class>Qtk::TreeView</class>
    <extends>QDockWidget</extends>
-   <header>treeview.h</header>
+   <header>designer-plugins/treeview.h</header>
    <container>1</container>
   </customwidget>
   <customwidget>
    <class>Qtk::ToolBox</class>
    <extends>QDockWidget</extends>
-   <header>toolbox.h</header>
+   <header>designer-plugins/toolbox.h</header>
    <container>1</container>
   </customwidget>
  </customwidgets>

src/app/qtkscene.cpp

@@ -6,6 +6,10 @@
 ## Contact: shaunrd0@gmail.com  | URL: www.shaunreed.com | GitHub: shaunrd0   ##
 ##############################################################################*/
 
+#include <QCoreApplication>
+#include <QDir>
+#include <QProcess>
+
 #include "qtkscene.h"
 
 using namespace Qtk;
@@ -35,8 +39,38 @@ QtkScene::~QtkScene()
 
 void QtkScene::init()
 {
+  // Clone qtk-resources if it doesn't already exist.
+  QDir repoDir("resources/");
+  if (!repoDir.exists()) {
+    qDebug() << "Cloning qtk-resources repository to " << repoDir.absolutePath()
+             << "...";
+
+    // Run git clone
+    QProcess gitProcess;
+    gitProcess.setWorkingDirectory(QCoreApplication::applicationDirPath());
+    gitProcess.start("git",
+                     {"clone",
+                      "https://git.shaunreed.com/shaunrd0/qtk-resources.git",
+                      repoDir.absolutePath()});
+
+    // Wait indefinitely for the process to complete
+    gitProcess.waitForFinished(-1);
+    // Check the result
+    if (gitProcess.exitCode() == 0) {
+      qDebug() << "Repository cloned successfully.";
+    } else {
+      qDebug() << "Git clone failed:" << gitProcess.readAllStandardError();
+    }
+  }
+
   // Add a skybox to the scene using default cube map images and settings.
-  setSkybox(new Qtk::Skybox("Skybox"));
+  setSkybox(new Qtk::Skybox(":/textures/skybox/right.png",
+                            ":/textures/skybox/top.png",
+                            ":/textures/skybox/front.png",
+                            ":/textures/skybox/left.png",
+                            ":/textures/skybox/bottom.png",
+                            ":/textures/skybox/back.png",
+                            "Skybox"));
 
   /* Create a red cube with a mini master chief on top. */
   auto myCube = new MeshRenderer("My cube", Cube(Qtk::QTK_DRAW_ELEMENTS));
@@ -44,8 +78,7 @@ void QtkScene::init()
   myCube->getTransform().setTranslation(5.0f, 0.0f, 0.0f);
   addObject(myCube);
 
-  auto mySpartan =
-      new Model("My spartan", ":/models/models/spartan/spartan.obj");
+  auto mySpartan = new Model("My spartan", QTK_SPARTAN);
   mySpartan->getTransform().setTranslation(5.0f, 0.5f, 0.0f);
   mySpartan->getTransform().setScale(0.5f);
   addObject(mySpartan);
@@ -82,31 +115,27 @@ void QtkScene::init()
   //
   // 3D Model loading
 
-  auto model = addObject(
-      new Qtk::Model("backpack", ":/models/models/backpack/backpack.obj"));
+  auto model = addObject(new Qtk::Model("backpack", QTK_BACKPACK));
   // Sometimes model textures need flipped in certain directions
   model->flipTexture("diffuse.jpg", false, true);
   model->getTransform().setTranslation(0.0f, 0.0f, -10.0f);
 
-  model = addObject(new Qtk::Model("bird", ":/models/models/bird/bird.obj"));
+  model = addObject(new Qtk::Model("bird", QTK_BIRD));
   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 = addObject(
-      new Qtk::Model("alien", ":/models/models/alien-hominid/alien.obj"));
+  model = addObject(new Qtk::Model("alien", QTK_ALIEN));
   model->getTransform().setTranslation(2.0f, -1.0f, -5.0f);
   model->getTransform().scale(0.15f);
 
-  model = addObject(
-      new Qtk::Model("My scythe", ":/models/models/scythe/scythe.obj"));
+  model = addObject(new Qtk::Model("My scythe", QTK_SCYTHE));
   model->getTransform().setTranslation(-6.0f, 0.0f, -10.0f);
   model->getTransform().rotate(-90.0f, 1.0f, 0.0f, 0.0f);
   model->getTransform().rotate(90.0f, 0.0f, 1.0f, 0.0f);
 
-  model = addObject(
-      new Qtk::Model("masterChief", ":/models/models/spartan/spartan.obj"));
+  model = addObject(new Qtk::Model("masterChief", QTK_SPARTAN));
   model->getTransform().setTranslation(-1.5f, 0.5f, -2.0f);
 
 
@@ -232,7 +261,7 @@ void QtkScene::init()
 
   /* Test alien Model with phong lighting and specular mapping. */
   model = addObject(new Qtk::Model("alienTest",
-                                   ":/models/models/alien-hominid/alien.obj",
+                                   QTK_ALIEN,
                                    ":/shaders/model-phong.vert",
                                    ":/shaders/model-phong.frag"));
   model->getTransform().setTranslation(3.0f, -1.0f, 10.0f);
@@ -259,7 +288,7 @@ void QtkScene::init()
 
   /* Test spartan Model with phong lighting, specular and normal mapping. */
   model = addObject(new Qtk::Model("spartanTest",
-                                   ":/models/models/spartan/spartan.obj",
+                                   QTK_SPARTAN,
                                    ":/shaders/model-phong.vert",
                                    ":/shaders/model-phong.frag"));
   model->getTransform().setTranslation(0.0f, -1.0f, 10.0f);
@@ -397,6 +426,7 @@ void QtkScene::draw()
   // WARNING: We must call the base class draw() function first.
   // + This will handle rendering core scene components like the Skybox.
   Scene::draw();
+  const QVector3D cameraPosition = getCamera().getTransform().getTranslation();
 
   mTestPhong->bindShaders();
   mTestPhong->setUniform("uModelInverseTransposed",
@@ -404,14 +434,12 @@ void QtkScene::draw()
   mTestPhong->setUniform(
       "uLightPosition",
       MeshRenderer::getInstance("phongLight")->getTransform().getTranslation());
-  mTestPhong->setUniform("uCameraPosition",
-                         QtkScene::getCamera().getTransform().getTranslation());
+  mTestPhong->setUniform("uCameraPosition", cameraPosition);
   mTestPhong->releaseShaders();
   mTestPhong->draw();
 
   mTestAmbient->bindShaders();
-  mTestAmbient->setUniform(
-      "uCameraPosition", QtkScene::getCamera().getTransform().getTranslation());
+  mTestAmbient->setUniform("uCameraPosition", cameraPosition);
   mTestAmbient->releaseShaders();
   mTestAmbient->draw();
 
@@ -423,8 +451,7 @@ void QtkScene::draw()
                            MeshRenderer::getInstance("diffuseLight")
                                ->getTransform()
                                .getTranslation());
-  mTestDiffuse->setUniform(
-      "uCameraPosition", QtkScene::getCamera().getTransform().getTranslation());
+  mTestDiffuse->setUniform("uCameraPosition", cameraPosition);
   mTestDiffuse->releaseShaders();
   mTestDiffuse->draw();
 
@@ -436,67 +463,70 @@ void QtkScene::draw()
                             MeshRenderer::getInstance("specularLight")
                                 ->getTransform()
                                 .getTranslation());
-  mTestSpecular->setUniform(
-      "uCameraPosition", QtkScene::getCamera().getTransform().getTranslation());
+  mTestSpecular->setUniform("uCameraPosition", cameraPosition);
   mTestSpecular->releaseShaders();
   mTestSpecular->draw();
 }
 
 void QtkScene::update()
 {
-  auto mySpartan = Model::getInstance("My spartan");
+  auto getModel = Model::getInstance;
+  const QVector3D cameraPosition = getCamera().getTransform().getTranslation();
+
+  // Models may have failed to load, so we should check before accessing.
+  if (auto mySpartan = getModel("My spartan"); mySpartan) {
     mySpartan->getTransform().rotate(0.75f, 0.0f, 1.0f, 0.0f);
+  }
 
-  auto myCube = MeshRenderer::getInstance("My cube");
+  if (auto myCube = getModel("My cube"); myCube) {
     myCube->getTransform().rotate(-0.75f, 0.0f, 1.0f, 0.0f);
+  }
 
-  auto position = MeshRenderer::getInstance("alienTestLight")
-                      ->getTransform()
-                      .getTranslation();
-  auto alien = Model::getInstance("alienTest");
-  alien->setUniform("uLight.position", position);
-  alien->setUniform("uCameraPosition",
-                    QtkScene::getCamera().getTransform().getTranslation());
-  auto posMatrix = alien->getTransform().toMatrix();
+  QMatrix4x4 posMatrix;
+  if (auto alien = getModel("alienTest"); alien) {
+    alien->setLightPosition("alienTestLight");
+
+    alien->setUniform("uCameraPosition", cameraPosition);
+    posMatrix = alien->getTransform().toMatrix();
     alien->setUniform("uMVP.normalMatrix", posMatrix.normalMatrix());
     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);
+  }
 
-  position = MeshRenderer::getInstance("spartanTestLight")
-                 ->getTransform()
-                 .getTranslation();
-  auto spartan = Model::getInstance("spartanTest");
-  spartan->setUniform("uLight.position", position);
-  spartan->setUniform("uCameraPosition",
-                      QtkScene::getCamera().getTransform().getTranslation());
+  if (auto spartan = getModel("spartanTest"); spartan) {
+    spartan->setLightPosition("spartanTestLight");
+
+    spartan->setUniform("uCameraPosition", cameraPosition);
     posMatrix = spartan->getTransform().toMatrix();
     spartan->setUniform("uMVP.normalMatrix", posMatrix.normalMatrix());
     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);
+  }
+
+  if (auto phong = getModel("testPhong"); phong) {
+    phong->setLightPosition("testLight");
 
-  auto phong = MeshRenderer::getInstance("testPhong");
     phong->getTransform().rotate(0.75f, 1.0f, 0.5f, 0.0f);
     phong->bindShaders();
-  position =
-      MeshRenderer::getInstance("testLight")->getTransform().getTranslation();
-  phong->setUniform("uLight.position", position);
-  phong->setUniform("uCameraPosition",
-                    QtkScene::getCamera().getTransform().getTranslation());
+    phong->setUniform("uCameraPosition", cameraPosition);
     posMatrix = phong->getTransform().toMatrix();
     phong->setUniform("uMVP.normalMatrix", posMatrix.normalMatrix());
     phong->setUniform("uMVP.model", posMatrix);
     phong->setUniform("uMVP.view", QtkScene::getCamera().toMatrix());
     phong->setUniform("uMVP.projection", QtkScene::getProjectionMatrix());
     phong->releaseShaders();
+  }
+
+  // MeshRenderers are lower level opengl objects baked into the source code.
+  auto getMesh = MeshRenderer::getInstance;
 
   // Rotate lighting example cubes
   mTestPhong->getTransform().rotate(0.75f, 0.5f, 0.3f, 0.2f);
-  MeshRenderer::getInstance("noLight")->getTransform().rotate(
-      0.75f, 0.5f, 0.3f, 0.2f);
+  getMesh("noLight")->getTransform().rotate(0.75f, 0.5f, 0.3f, 0.2f);
   mTestAmbient->getTransform().rotate(0.75f, 0.5f, 0.3f, 0.2f);
   mTestDiffuse->getTransform().rotate(0.75f, 0.5f, 0.3f, 0.2f);
   mTestSpecular->getTransform().rotate(0.75f, 0.5f, 0.3f, 0.2f);
@@ -504,46 +534,27 @@ void QtkScene::update()
   // Examples of various translations and rotations
 
   // Rotate in multiple directions simultaneously
-  MeshRenderer::getInstance("rgbNormalsCube")
-      ->getTransform()
-      .rotate(0.75f, 0.2f, 0.4f, 0.6f);
+  getMesh("rgbNormalsCube")->getTransform().rotate(0.75f, 0.2f, 0.4f, 0.6f);
 
   // Pitch forward and roll sideways
-  MeshRenderer::getInstance("leftTriangle")
-      ->getTransform()
-      .rotate(0.75f, 1.0f, 0.0f, 0.0f);
-  MeshRenderer::getInstance("rightTriangle")
-      ->getTransform()
-      .rotate(0.75f, 0.0f, 0.0f, 1.0f);
+  getMesh("leftTriangle")->getTransform().rotate(0.75f, 1.0f, 0.0f, 0.0f);
+  getMesh("rightTriangle")->getTransform().rotate(0.75f, 0.0f, 0.0f, 1.0f);
 
   // Move between two positions over time
   static float translateX = 0.025f;
   float limit = -9.0f;  // Origin position.x - 2.0f
-  float posX = MeshRenderer::getInstance("topTriangle")
-                   ->getTransform()
-                   .getTranslation()
-                   .x();
+  float posX = getMesh("topTriangle")->getTransform().getTranslation().x();
   if (posX < limit || posX > limit + 4.0f) {
     translateX = -translateX;
   }
-  MeshRenderer::getInstance("topTriangle")
-      ->getTransform()
-      .translate(translateX, 0.0f, 0.0f);
-  MeshRenderer::getInstance("bottomTriangle")
-      ->getTransform()
-      .translate(-translateX, 0.0f, 0.0f);
+  getMesh("topTriangle")->getTransform().translate(translateX, 0.0f, 0.0f);
+  getMesh("bottomTriangle")->getTransform().translate(-translateX, 0.0f, 0.0f);
   // And lets rotate the triangles in two directions at once
-  MeshRenderer::getInstance("topTriangle")
-      ->getTransform()
-      .rotate(0.75f, 0.2f, 0.0f, 0.4f);
-  MeshRenderer::getInstance("bottomTriangle")
-      ->getTransform()
-      .rotate(0.75f, 0.0f, 0.2f, 0.4f);
+  getMesh("topTriangle")->getTransform().rotate(0.75f, 0.2f, 0.0f, 0.4f);
+  getMesh("bottomTriangle")->getTransform().rotate(0.75f, 0.0f, 0.2f, 0.4f);
   // 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);
+  getMesh("centerCube")->getTransform().rotate(0.75f, 0.2f, 0.4f, 0.6f);
 }

src/app/qtkscene.h

@@ -11,6 +11,12 @@
 
 #include <qtk/scene.h>
 
+#define QTK_SPARTAN  "resources/models/spartan/spartan.obj"
+#define QTK_BACKPACK "resources/models/backpack/backpack.obj"
+#define QTK_BIRD     "resources/models/bird/bird.obj"
+#define QTK_ALIEN    "resources/models/alien-hominid/alien.obj"
+#define QTK_SCYTHE   "resources/models/scythe/scythe.obj"
+
 /**
  * Example scene using QtkWidget to render 3D models and simple geometry within
  * QtOpenGLWidgets. This scene also shows some examples of using GLSL shaders to