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Important: This document is part of the Legacy section of the ADC Reference Library. This information should not be used for new development.

Current information on this Reference Library topic can be found here:

NOTE: This Technical Q&A has been retired. Please see the Technical Q&As page for current documentation.

The Backfacing Option

Q: Does QuickDraw 3D have an option or backfacing style which flips the faces' surface normals when I'm on the inside of my model?

A: No. Your app has to detect whether your camera location is on the inside or outside of a geometry. When your camera is inside your geometry, set the geometry's backfacingStyle to kQ3BackfacingStyleFlip (assuming your surface normals face outwards).

[Apr 08 1996]

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