CALayer z-axis scale
CALayer z-axis scale
- Subject: CALayer z-axis scale
- From: ChrisOutwin <email@hidden>
- Date: Wed, 14 Oct 2009 12:45:54 -0500
My Core Animation application correctly scales a CALayer's x and y
axes but does nothing to change the layer's visual position relative
to sibling layers when the z scaling factor is changed in the UI. The
debugger and NSLog both indicate that element m33 of the CATransform3D
structure change to reflect the value from the UI. Setting element
m34 to 1.0 / -850 to create a perspective transform does nothing.
I've carefully read the Layer Geometry and Transformation section of
the Core Animation Programming Guide. The only example I've found
(CALayerExample) uses CATransform3DMakeScale, but sets 1.0 as the
argument for the z-axis parameter. (When I edited this example code
to make all of the arguments the same, the CALayer did not change on
the z-axis.)
Is there an example which scales a CALayer on the z-axis? I've worked
for two days trying to get this. What am I missing?
Thank you very much.
Chris Outwin
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