I want to transform a CGPath with the transform CGAffineTransformMakeRotation(radians) but the CGPathCreateCopyByTransformingPath func takes a CConstPointer<CGAffineTransform>. How do I get a CConstPointer<CGAffineTransform> out of my CGAffineTransform?
How to get CConstPointer in Swift?
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Pass the CGAffineTransform as an inout expression (that is, prefix it with
&).Note that the transform must be a variable, not a Swift constant (declared with
let).c.f. Using Swift with Cocoa and Objective-C: Interacting with C APIs