public CIImage OutputImage()
{
var inputImage = ValueForKey(new NSString("inputImage"));
if (inputImage == null)
{
return(null);
}
// Monochrome
var monochromeFilter = CIFilter.FromName("CIColorMatrix");
monochromeFilter.SetDefaults();
monochromeFilter.SetValueForKey(CIVector.Create(0, 0, 0), new NSString("inputRVector"));
monochromeFilter.SetValueForKey(CIVector.Create(0, 0, 0.4f), new NSString("inputGVector"));
monochromeFilter.SetValueForKey(CIVector.Create(0, 0, 1), new NSString("inputBVector"));
monochromeFilter.SetValueForKey(CIVector.Create(0, 0, 1), new NSString("inputAVector"));
monochromeFilter.SetValueForKey(inputImage, new NSString("inputImage"));
var glowImage = (CIImage)monochromeFilter.ValueForKey(new NSString("outputImage"));
// Scale
var centerX = CenterX;
var centerY = CenterY;
if (centerX > 0)
{
var transform = new NSAffineTransform();
transform.Translate(centerX, centerY);
transform.Scale(1.2f);
transform.Translate(-centerX, -centerY);
var affineTransformFilter = CIFilter.FromName("CIAffineTransform");
affineTransformFilter.SetDefaults();
affineTransformFilter.SetValueForKey(transform, new NSString("inputTransform"));
affineTransformFilter.SetValueForKey(glowImage, new NSString("inputImage"));
glowImage = (CIImage)affineTransformFilter.ValueForKey(new NSString("outputImage"));
}
// Blur
var gaussianBlurFilter = CIFilter.FromName("CIGaussianBlur");
gaussianBlurFilter.SetDefaults();
gaussianBlurFilter.SetValueForKey(glowImage, new NSString("inputImage"));
gaussianBlurFilter.SetValueForKey(InputRadius != null ? InputRadius : new NSNumber(10.0f), new NSString("inputRadius"));
glowImage = (CIImage)gaussianBlurFilter.ValueForKey(new NSString("outputImage"));
// Blend
var blendFilter = CIFilter.FromName("CISourceOverCompositing");
blendFilter.SetDefaults();
blendFilter.SetValueForKey(glowImage, new NSString("inputBackgroundImage"));
blendFilter.SetValueForKey(blendFilter, new NSString("inputImage"));
glowImage = (CIImage)blendFilter.ValueForKey(new NSString("outputImage"));
return(glowImage);
}
private void Pointalize()
{
CIVector center = CIVector.Create(Bounds.GetMidX(), Bounds.GetMidY());
CIFilter pointalize = CIFilter.FromName("CIPointillize");
pointalize.SetValueForKey(NSNumber.FromFloat(1), CIFilterInputKey.Radius);
pointalize.SetValueForKey(center, CIFilterInputKey.Center);
controls.ContentFilters = new CIFilter[] { pointalize };
}
void ApplyFilter()
{
CIVector center = CIVector.Create(Bounds.GetMidX(), Bounds.GetMidY());
CIFilter torus = CIFilter.FromName("CITorusLensDistortion");
var keys = new NSString[] { CIFilterInputKey.Center,
CIFilterInputKey.Radius,
CIFilterInputKey.Width,
CIFilterInputKey.Refraction };
var values = new NSObject[] { center,
NSNumber.FromFloat(150),
NSNumber.FromFloat(2),
NSNumber.FromFloat(1.7f) };
torus.SetValuesForKeysWithDictionary(NSDictionary.FromObjectsAndKeys(values, keys));
controls.BackgroundFilters = new CIFilter[] { torus };
AddAnimationToTorusFilter();
}