public void start(Stage primaryStage) {
d3 = new Draw3D();
Scene scene = d3.buildScene();
preambleCommands();
drawingCommands();
d3.setStart();
primaryStage.setScene(scene);
primaryStage.setTitle(title);
primaryStage.show();
}
void preambleCommands() {
d3.setAmbientLight(false);
d3.setPointLight(true);
d3.setCumulate(false);
d3.setSequencingOn();
d3.setVectorRadius(1);
d3.setArrowRadius(1);
}