Recap of Plane-at-a-time Clipping
Advantages:
- Elegant (few special cases)
- Robust (handles boundary and edge conditions well)
- Well suited to hardware
- Canonical clipping makes fixed-point implementations manageable
Disadvantages:
- Hard to fix into O-O paradigm (Reentrant, objects spawn new short-lived objects)
- Only works for convex clipping volumes
- Often generates more than the minimum number of triangles needed
- Requires a divide per edge
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