objective c - Efficiently drawing and animating thousands of rectangles -


what trying have many small rectangles on screen (up several thousand) move randomly.

i have mechanics behind figured out (in terms of determining coordinates movement), can't figure out best way draw shapes or model movement.

a couple strategies have tried have been, first, subclass nsview (this on mac) , create thousands of these. change drawrect: function in order draw square inside of themselves. pretty simple change locations move them around. however, several thousand allocated instances of these, performance terrible.

i tried less object-oriented route also, using nsrectfill draw thousands of rectangles. however, had trouble implementing movement needed this, though blazing fast.

does have suggestions on how create animation?

layers , core animation best approach platform.


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