Drawing on Images

[Doug Lyman]

There is a lag between when you begin drawing on an image and whether the TouchStart event fires. If you hold your finger in place for a second and then start drawing, all is good. If you do a quick swipe with a finger or Apple pencil. The TouchStart event never fires. Any ideas?

[Doug Lyman]

No takers?

[jmburnod]

Hi Doug,
Not sure we understand what you want to do.

drawing on an image

With polygon control I presume. As far I know paint tools are not available for iOS.
can you post a little stack which should be useful to understand better.
Best regards
Jean-Marc

[Doug Lyman]

FIXED. I was able to fix the time lag by placing an opaque (gradient transparent) layer on top of the graphic to capture and process the touch events. Works fantastic with the Apple Pencil in iOS.