// Called once at startup
void onStart(int rendererID){
    setWindowSize(800, 600);                // Set window size

    int axis = newAxisModel(3.0, 3.0, 3.0); // Create axis model
    mountModel(axis, rendererID);           // Attach to renderer

    int box = newBoxModel(1.0, 1.0, 1.0);   // Create box model
    setModelColor(box, 0, 0, 255, 255);     // Set color
    rotXModel(box, 1.0);                    // Rotate
    moveModel(box, 0.5, 1.0, 1.5);          // Translate
    mountModel(box, rendererID);            // Attach to renderer
}