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Kuesa lights Example

Demonstrates the use of the KuesaSerenity API to manipulate light sources

serenity-lights-example.png

Setup Window

Kuesa::Serenity::Window can be conveniently used to create a Window suitable for Serenity.

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int main(int ac, char **av)
{
    KDGui::GuiApplication app;

    // Setup Window
    Kuesa::Serenity::Window w;
    auto engine = std::make_unique<::Serenity::AspectEngine>();
    w.visible.valueChanged().connect([&app](const bool &visible) {
        if (visible == false)
            app.quit();
    });
    w.title = KDBindings::makeBinding(makeTitle(w.width, w.height, engine->fps));
    w.width = 1920;
    w.height = 1080;
    w.visible = true;

Filename: lights-serenity/main.cpp

Importing a glTF2 File

We make use of the GLTF2Importer to load a glTF2 file and feed our AssectCollections . The file contains two light sources.

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std::unique_ptr<::Serenity::Entity> createKuesaScene(Kuesa::Serenity::AssetCollections *assetCollections,
                                                     ::Serenity::LayerManager *layerManager)
{
    Kuesa::Serenity::GLTF2Importer importer;
    importer.assetCollections = assetCollections;
    importer.layerManager = layerManager;
    importer.source = String(SHARED_ASSETS_DIR "/models/lights/lights.gltf");

    // Insert the generated Kuesa Entities into rootEntity
    auto rootEntity = std::make_unique<::Serenity::Entity>();

    for (std::unique_ptr<::Serenity::Entity> &sceneRoot : importer.sceneRoots()) {
        // Take ownership
        rootEntity->addChildEntity(std::move(sceneRoot));
    }

    return std::move(rootEntity);
}

Filename: lights-serenity/main.cpp

Manipulate the lights

The lights collection is then fed to the overlay code for display an manipulation.

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    // ImGUI Overlay
    Serenity::AbstractOverlay *overlay = createOverlay(w, engine.get(), algo.get(), collections.lights);

Filename: lights-serenity/main.cpp

The manipulation itself is done by setting each light property from each corresponding GUI element

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                float intensity = light->intensity.get();
                if (ImGui::SliderFloat(String("Intensity##" + name).c_str(), &intensity, 0, 1000))
                    light->intensity = intensity;

Filename: lights-serenity/main.cpp

Updated on 2023-07-03 at 11:02:17 +0000