help with speedy graphics

[Alex Tweedly]

At 08:31 21/07/2004 -0700, Richard Gaskin wrote:

>Alex Tweedly wrote:
>>Taking positions and colours from an actual data structure (rather than 
>>generating random points) I still get draw times for (10k points) under 
>>20 ticks - feels very fast, but not instantaneous.
>
>Compared to other vector programs that's pretty good.  Try displaying that 
>many objects in AppleWorks, Illustrator, Freehand, OmniGraffle, or other 
>vector program and I think you'll find the Rev engine's handling of this 
>to be more or less on par.

Yeah, it's pretty respectable.
I'm perfectly happy with the 20 ticks for initial draw and 4-5 for 
incremental draws, it feels very responsive.

This has been the strongest - but far from the only - example where I've 
implemented something in  Revolution in the "obvious" way (that's "obvious 
- to someone who's not yet thinking in chunk / text  lines) and been 
horrified by the abysmally slow performance.  Then a few questions to the 
list, some helpful replies, a quick re-design into "The Transcript Way" and 
suddenly it becomes not just OK, but quite good. (I can't call this example 
"good" yet - wxPython does a non-optimized version of this at about 3 times 
the speed of the best I can get in Rev - but definitely "quite good").

So in case I haven't said it recently - the folks who provide all the help 
on this list are probably the best feature of Revolution - thanks !!

-- Alex.

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