BezierPathLab - multiple images on screen at once
BezierPathLab - multiple images on screen at once
- Subject: BezierPathLab - multiple images on screen at once
- From: Jim Witte <email@hidden>
- Date: Sun, 2 May 2004 02:07:20 -0500
Hi,
Looking at the included BezierPathLab demo (in xCode, with ZeroLink
off), I noticed that as I spin the figure around, it leaves multiple
images on the screen at once for about 1/2 second until Quartz (I
assume it's Quartz) "cleans it up".
Is this related to how the compositing works with the double
buffering that must be going on automatically - as the program clears
the view first, then draws the new image, which without DB would result
in a flicker - or is that what the call to [currentContext
restoreGraphicsState]at the end of the drawRect: method does?
Jim Witte
email@hidden
Indiana University CS
---
A vote for Nader is a vote for George Bush.
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