CoreImage.CITriangleKaleidoscope Class
A CoreImage.CIFilter that creates a kaleidoscopic effect.

See Also: CITriangleKaleidoscope Members


[ObjCRuntime.iOS(6, 0)]
public class CITriangleKaleidoscope : CIFilter


The following example shows this filter in use

C# Example

// Create the CIImage from a file
CIImage heron = CIImage.FromCGImage (UIImage.FromFile ("heron.jpg").CGImage);

// Create a CITriangleKaleidoscope filter with the input image
var triangle_kaleidoscope = new CITriangleKaleidoscope () {
	Image = heron,
	Size = 200,
	Point = new CIVector (heron.Extent.Width * .3f, heron.Extent.Height * .6f),

// Get the altered image from the filter
var output = new CICrop {
	Image = triangle_kaleidoscope.OutputImage,
	Rectangle = new CIVector (0, 0, 400, 300)

// To render the results, we need to create a context, and then
// use one of the context rendering APIs, in this case, we render the
// result into a CoreGraphics image, which is merely a useful representation
var context = CIContext.FromOptions (null);

var cgimage = context.CreateCGImage (output, output.Extent);

// The above cgimage can be added to a screen view, for example, this
// would add it to a UIImageView on the screen:
myImageView.Image = UIImage.FromImage (cgimage);

With the following image input:

Produces the following output:

"canon" © 2012 cuatrok77 hernandez, used under a Creative Commons Attribution-ShareAlike license:


Namespace: CoreImage
Assembly: Xamarin.iOS (in Xamarin.iOS.dll)
Assembly Versions: