}
@Override
public void render() {
System.out.println("Canvas3D.render()");
GraphicsContext3D gc = GraphicsContext3D.getGC();
GL2 gl = gc.getGL();
gl.glTranslatef(-1.5f, 0.0f, -6.0f);
gl.glBegin(GL2.GL_TRIANGLES);
gl.glVertex3f( 0.0f, 1.0f, 0.0f);
gl.glVertex3f(-1.0f, -1.0f, 0.0f);
gl.glVertex3f( 1.0f, -1.0f, 0.0f);