- glColor3f(0,0,1);
- glVertex3f( -1.5, 0.5, -30.0);
- glColor3f(1,0,0);
- glVertex3f( 0, 2.0, -30.0);
- glColor3f(0,1,0);
- glVertex3f(-1.5, 2.0, -30.0);
+ /* CCW / front-facing */
+ glColor3f(0,0,.7);
+ glVertex3f(-0.1, -0.9, -30.0);
+ glColor3f(.8,0,0);
+ glVertex3f(-0.1, 0.9, -30.0);
+ glColor3f(0,.9,0);
+ glVertex3f(-0.9, 0.0, -30.0);
+
+ /* CW / back-facing */
+ glColor3f(0,0,.7);
+ glVertex3f( 0.1, -0.9, -30.0);
+ glColor3f(.8,0,0);
+ glVertex3f( 0.1, 0.9, -30.0);
+ glColor3f(0,.9,0);
+ glVertex3f( 0.9, 0.0, -30.0);
+