/**
* Creates a new <code>CornellBoxModel</code>.
*/
public EmptyCornellBoxScene(ColorModel colorModel) {
Material matteWhite = new LambertianMaterial(colorModel.getContinuous(white));
Material matteGreen = new LambertianMaterial(colorModel.getContinuous(green));
Material matteRed = new LambertianMaterial(colorModel.getContinuous(red));
Material matteEmissive = new LambertianMaterial(colorModel.getGray(0.78), colorModel.getContinuous(emission));
SceneElement materialMap = new MaterialMapSceneElement(geometry)
.addMaterial("white", matteWhite)
.addMaterial("red", matteRed)
.addMaterial("green", matteGreen)