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by nauful
1395 days ago
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You have to clip against planes in 4D space (xyzw) before perspective divide (xyz /= w), not 3D (xyz). This simplified sample shows Sutherland-Hodgman with 4D clipping:
https://web.archive.org/web/20040713023730/http://wwwx.cs.un...
The main difference is the intersect method finds the intersection of a 4D line segment against a 4D plane. |
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