4 Geometry and Transformations

OpenGL has a simple and powerful transformation model. Since the transformation machinery in OpenGL is exposed in the form of the modelview and projection matrices, it's possible to develop novel uses for the transformation pipeline. This section describes some useful transformation techniques, and provides some additional insight into the OpenGL graphics pipeline.

 
• 4.1 Stereo Viewing
  • 4.1.1 Fusion Distance
  • 4.1.2 Computing the Transforms
  • 4.1.3 Rotate vs. Shear
• 9.2 Depth of Field
• 4.3 The Z Coordinate and Perspective Projection
  • 4.3.1 Depth Buffering
• 4.4 Image Tiling
• 4.5 Moving the Current Raster Position