help with speedy graphics

Richard Gaskin ambassador at
Tue Jul 13 19:58:45 CDT 2004

Alex Tweedly wrote:

> At 16:47 13/07/2004 -0700, Richard Gaskin wrote:
>> Alex Tweedly wrote:
>>> The script (see below) uses (tries to use) templateGraphic to set the 
>>> size and colour, but this doesn't seem to have any effect.  It also 
>>> uses lockscreen - but I see each rectangle being drawn one-by-one - I 
>>> had expected that with lockscreen set, I would see nothing until all 
>>> the rectangles were drawn and lockscreen was set false again.
>> It may be the IDE getting in the way, adjusting those properties on 
>> newGraphic.  Adding "lock messages" before the loop seems to take care 
>> of it.
>> As for the lockscreen issue, I believe that's a known bug in the IDE; 
>> you should not see that in a standalone or if the IDE is suspended.
> Cool - thanks.
> Adding the lock messages made this script OK - all the rectangles appear 
> at the same time; but the clean-up script that deletes all these 
> graphics when I'm done with them is problematic, even with lock screen 
> and lock messages. Suspending the dev tools makes it faster - but it 
> still does the rectangles one at a time.
> But even with this improvement, it's un-usably slow.

It's pretty fast here, but I'm using a different IDE.

But here's a tip I got from Geoff Canyon:  you could use one polygon 
object, setting the points in script.  If you have blank lines in a set 
of polygon points the resulting object will have discontiguous regions.

Geoff used that technique to make an Asteroids-style game, and 
everything on screen (spaceship, asteroids, lasers, etc.) were all one 
polygon -- and it was amazingly fast.

  Richard Gaskin
  Fourth World Media Corporation
  Rev tools and more:

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