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

Can't Turn Off DrawContext's clearImageMethod

Q: When we have the interactive renderer on, and we try to turn off the DrawContext's clearImageMethod to kQ3ClearMethodNone, it still clears. This works properly with the wire-frame renderer, but we need this feature in the interactive renderer, as we are pasting in background pictures that we want to act as a backdrop to our 3D models, and the interactive renderer always obliterates the picture with the clearImageColor.

A: This is a renderer-dependent feature that is supported by the wire-frame renderer, but not the Interactive renderer. We intend to provide a "Clear with picture" method in the next major release of QuickDraw 3D.

[Jun 01 1995]

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