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How do I apply a perspective transform to a UIView?
How to change the perspective, 3D Transform, skew ,distortion, rotation of the image view? Any sample projects for this.Thanks in Advance
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Can you please rephrase the question Im not getting you ... – IronManGill Sep 04 '12 at 11:01
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can you please more briefly describe your problem – Nimit Parekh Sep 04 '12 at 11:01
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image processing like 3D transform, rotation, skew, and distortion. Any sample source code or any idea for this process – Mani Sep 04 '12 at 11:04
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check out the openGL format for this or projects like FiltrrApp,NYXImagesKit etc.. – IronManGill Sep 04 '12 at 11:14
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I am using ordinary UIImage view not using OpenGL. Any idea change the perspective of the image. – Mani Sep 04 '12 at 11:21
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3D transforms, rotations, skews, etc are usually done with CATransform3D.
As per the documentation (Core Animation Programming Guide):
The CATransform3D data structure defines a homogenous three-dimensional transform (a 4 by 4 matrix of CGFloat values) that is used to rotate, scale, offset, skew, and apply perspective transformations to a layer.
As an example, to do a 3D rotation towards the bottom right, you would do something like:
myImageView.layer.transform = CATransform3DRotate(CATransform3DIdentity, 1.75, 0.85, 0, 0);
and don't forget to
#import <QuartzCore/QuartzCore.h>
A fantastic sample project is Mark Pospesel's Enter the Matrix. The code is on GitHub, also check out the explanatory slides.
Eric
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Thanks a lot. EnterTheMatrix is the great App. Once again thanks for your guide lines. – Mani Sep 05 '12 at 07:32