how can I obtain the absolute position of a CGPoint inside a CALayer. I need this for exact pixel drawing
Edit: Absolute to the screen
Hit test the superlayers recursively, until you arrive at the root layer:
CGPoint originalPoint = // wherever from you obtain your original point
CALayer *layer = self;
CGPoint point = originalPoint;
while (layer.superlayer)
{
point = [layer convertPoint:point toLayer:layer.superlayer];
layer = layer.superlayer;
}
// here `point' will contain the exact position
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