import graphics3d.Graphics3DFramework ; import Graphics3D ; // Function called at the start of the program void onStart ( int rendererID ) { // Create a vector at the origin int vector = newVector( 0.0, 0.0, 0.0 ) ; // Place the vector in the world coordinate system mountVector( vector, rendererID ) ; // Project the vector onto the screen int x = projectVectorX( vector, rendererID ); int y = projectVectorY( vector, rendererID ); // Output the result println( "X=" + x + ", " + "Y=" + y ) ; }