This is an example application that is using the Qtk API to create custom Qt 
OpenGL widgets. This is very similar to `QtkWidget` in the Qtk desktop 
application, but could be modified for different uses if needed.

You can import your own models within `examplescene.cpp`, inside the
`ExampleScene::init()` function. Rotations and translations
are applied in `ExampleScene::update()`.

The syntax for adding shapes and models is seen in the example below.
This would result in a scene with a red cube and a miniature spartan model placed on top.

```C++
void ExampleScene::init() {
  // Add a skybox to the scene using default cube map images and settings.
  setSkybox(new Qtk::Skybox("Skybox"));

  /* 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);
  mMeshes.push_back(myCube);

  auto mySpartan = new Model("My spartan", "/path/to/spartan/spartan.obj");
  mySpartan->getTransform().setTranslation(0.0f, 0.5f, 0.0f);
  mySpartan->getTransform().setScale(0.5f);
  mModels.push_back(mySpartan);
}
```

If we want to make our spartan spin, we need to apply rotation in `update`

```C++
void ExampleScene::update() {
  auto mySpartan = Model::getInstance("My spartan");
  mySpartan->getTransform().rotate(0.75f, 0.0f, 1.0f, 0.0f);

  auto myCube = MeshRenderer::getInstance("My cube");
  myCube->getTransform().rotate(-0.75f, 0.0f, 1.0f, 0.0f);
}
```

Other examples can be found in the source files for this example project.


## Build Instructions

Currently, this application requires manual build and installation of Qtk.
In the future, once a release is published, I will be able to use `FetchContent`
or similar cmake functionality to remove this requirement.

For Qtk build instructions, see the README in the root of this repository.

```bash
cmake -S /path/to/qtk/example-app/ -B /path/to/qtk/example-app/build
cmake --build /path/to/qtk/example-app/build
```

If Qtk was not installed system-wide, we can set `QTK_PATH` to point to the custom installation directory.
```bash
cmake -S /path/to/qtk/example-app/ -B /path/to/qtk/example-app/build -DQTK_PATH=/path/to/qtk/install/
cmake --build /path/to/qtk/example-app/build
```

After this, we can run the example application -

```bash
./path/to/qtk/example-app/build/bin/example
```