Shader - Program - Graphics

obj.kt

const val multipleLightsShader: String = """
TBD
"""

class MultipleLightsProgram : Program(multipleLightsShader) {
    var projection: Matrix by uniforms["Matrices.projection"]
    var view: Matrix by uniforms["Matrices.view"]
    var model: Matrix by uniforms["model"]
    var cameraPosition: Vector by uniforms["cameraPosition"]
    var atmosphere: Atmosphere by uniforms["atmosphere"]
}

fun obj() = example {
    val gl: Opengl = import()

    val graphics: MultipleLightsProgram = MultipleLightsProgram()
    val model: ObjModel = ObjModel("models/backpack/backpack.obj", flipped = true)
    val modelPosition: Matrix = Matrix()
    val camera: Camera = setupCamera().apply { position.z = 10f }
    val atmosphere: Atmosphere = setupAtmosphere()    

    init {        
        load(graphics)
        load(model)

        gl.clearColor(atmosphere.backgroundColor)
        gl.enable(DEPTH_TEST)
    }

    update {
        gl.clear(COLOR_BUFFER_BIT or DEPTH_BUFFER_BIT)
        
        graphics.projection = camera.projection
        graphics.view = camera.view
        graphics.model = modelPosition        
        graphics.cameraPosition = camera.position
        graphics.atmosphere = atmosphere
        graphics.drawModel(model)
    }

}