Apparently, there is a disconnect between the view's coordinate system
context and that of the contained CALayers. I'm using Sketch's
SKTZoomingScrollView to set the scale factor of my main drawing view. It
works great without CALayers. What is does is it scales the bounds of the
containing NSClipView, which automatically scales my main view. However,
the CALayers don't scale when they draw in the view.
BTW, I tried unsuccessfully to observe the clip view's bounds to trigger
code to resize the CALayers. Why can't I observe it? I finally set an
observer on the scale factor in SKTZoomingScrollView.
What is the best way to make the CALayers track my main view? The main
view is not really changed except for the fact that it is embedded in the
clip view which has rescaled its bounds. Apparently, scaling the view
coordinates does not propagate down to the CALayers.
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