[futurebasic] Re: Re: [FB] Slow QuickDraw

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From: Michael Malone <crochety@...>
Date: Sun, 31 Jan 99 15:55:41 -0800
>>This is interesting.  I too found the GWorld draw to be faster (by a 
>>factor of
>>almost 3 on my G3).  Here's a speculation:  When drawing to screen, QD surely
>>has to check the current status of the clip region and vis region before
>>_each_ drawing command.  But since those regions never change in a GWorld, QD
>>shouldn't have to perform that check.  Maybe that's enough to accont for the
>>speed difference.

FWIW  Robert Purves' CALL FRAMEPOLY speed comparison example was faster 
by x6 on my 8600/250.  Scores were 96-100 vs. 16.
Makes a big diff. to my map drawing thing.   Thanks R.P.
Also - this may be obvious, but it was something I hadn't thought about - 
if you reduce the size of the polygon it draws faster (Also if you make 
it larger so it spills off the window).
So Quickdraw time is a function of the length of the lines drawn.  Just 
like me and my pencil.


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Mike Malone
crochety@...
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