Documentation Archive Developer
Search

ADC Home > Reference Library > Technical Q&As > Legacy Documents > Graphics & Imaging >

Legacy Documentclose button

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.

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]