Jacqueline: Sounds like a good idea. I don’t see how, though, that you would be able to display a LOT of identical symbols on a map using a single polygon graphic. Don’t you have to create and place each one? That would mean thousands of graphic objects. Is that what you mean? Bill On Sep 9, 2014, at 12:09 PM, J. Landman Gay <jac...@hyperactivesw.com> wrote:
> On 9/9/2014, 12:51 PM, William Prothero wrote: >> Seems I’ve found the offending line in my draw script. Its: >> >>> > put byte 1 to tLength of tbrushBinaryData into byte tNewStart * 4 - 3 to >>> > tNewStart*4 - 3 + tLength -1 of imgdata -- insert brushimageData into >>> > image >> If I comment out this line, the symbols are drawn in 2.85 seconds, more than >> a factor of 10 speedup. > > This would be similar to using a "repeat with x = 1 to 1000" structure. Every > time through the loop the engine has to count from byte 1 to tNewStart. An > image has lots of bytes, so all that counting makes it slow. > > I had a very similar requirement in my current project, I had to create > hundreds of small images on top of a map. I never bothered to try drawing > into the map image, I knew it would take forever. Instead I used a polygon > graphic and set its points to the locations I needed, and set its markers to > the symbol I wanted to display. I needed one graphic per symbol type, but > that still cut down the number from hundreds to five. > > You may remember my thread about setting markers so they would resize > correctly. It was very helpful and I was able to do what I needed. Setting > the points of a graphic is instantaneous, there was no delay at all. If your > goal is similar to mine, you might want to drop the painting method and just > go with the graphics approach. > > -- > Jacqueline Landman Gay | jac...@hyperactivesw.com > HyperActive Software | http://www.hyperactivesw.com > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
