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Re: Rotating an NSView around its center

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Re: Rotating an NSView around its center

Subject: Re: Rotating an NSView around its center
From: "Mike R. Manzano" <email@hidden>
Date: Fri, 11 Mar 2005 08:45:28 -0800

How about using an NSAffineTransform?


On Mar 11, 2005, at 6:50 AM, Michael Becker wrote:

Hello!
I am trying to rotate a custom NSView around its center point. Imagine something like the Sketch Example program. I have a small custom view on my "canvas" and want to rotate it around its origin. Doing that with NSBezierPaths is easy, just translating to the coordinate origin, rotating, and translating back.

But I cannot seem to do this with an NSView. -setFrameRotation: is rotating around the frame's origin (so changing the frame's origin won't make any difference). Is there any way I can achieve the wanted behavior? I could live with calculations to relocate the frame's origin after rotating, but I guess that will have some pretty ugly trigonometric math involved :-)
Regards,
Michael
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  >Rotating an NSView around its center (From: Michael Becker <email@hidden>)




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