@Override
protected void init() {
initializeProgram();
try {
coneMesh = new Mesh( "UnitConeTint.xml" );
cylinderMesh = new Mesh( "UnitCylinderTint.xml" );
cubeTintMesh = new Mesh( "UnitCubeTint.xml" );
cubeColorMesh = new Mesh( "UnitCubeColor.xml" );
planeMesh = new Mesh( "UnitPlane.xml" );
} catch ( Exception exception ) {
exception.printStackTrace();
System.exit( -1 );
}