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... illustrated in Figure 3. 9. Handling Primitives 57 Figure 3. 7 Two polygons with shared vertices. 03 BOGL_GP CH 03 3/1/04 2 :34 PM Page 57 TLFeBOOK Scaling Scaling, in its most simple definition, increases ... GL_LINE); 5) glPolygonMode(GL_FRONT_AND_BACK, GL_LINE); Handling Primitives 53 Figure 3. 5 Screenshot of the Polygons example in Chapter 3 on the CD. 03 BOGL_GP CH 03 3/1/04 2 :34 PM Page 53 TLFeBOOK ... front-facing polygons and GL_CW if you want to use clockwise orientation. Note The winding setting isn’t just relevant in culling; it’s used by other OpenGL subsystems, including lighting. Chapter 3...

... CNC machines. Certain guidelines should be observed when dimensioning parts for CNC machining. The following guidelines will insure that the dimensioning language means exactly the same thing to ... Reference point (maximum travel of machine) M = Machine zero point (X0,Y0,Z0) of machine coordinate system. W = Part zero point workpiece coordinate system. Under G54 G59 the actual machine coordinates ... counterclockwise (CCW) 06 G20* Inch input (in. ) 06 G21* Metric input (mm) G24 Radius programming (**) 00 G28 Return to reference point 00 G29 Return from reference point G32 Thread cutting (**) 07 G40 Cutter...