public void FromValues()
{
Assert.Throws <ArgumentNullException> (() => CIVector.FromValues(null), "null");
using (var v = CIVector.FromValues(new nfloat [0])) {
Assert.That(v.Count, Is.EqualTo(0), "Count/empty");
}
}
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 };
}
public CIImage RadialGradient()
{
var center = new CIVector(100, 100); // Default [150 150]
var radGradient = new CIRadialGradient()
{
Center = center,
Radius0 = 10F, // Default 5
Radius1 = 150F, // Default 100
Color0 = new CIColor(new CGColor(0, 255F, 0)), // Green
Color1 = new CIColor(new CGColor(0, 0, 0)) // Black
};
return(Crop(radGradient));
}
public CIImage LinearGradient()
{
var point0 = new CIVector(0, 0); // Default [0 0]
var point1 = new CIVector(250, 250); // Default [200 200]
var linearGrad = new CILinearGradient()
{
Point0 = point0,
Point1 = point1,
Color0 = new CIColor(UIColor.Red),
Color1 = new CIColor(UIColor.Blue)
};
return(Crop(linearGrad));
}
public CIImage GaussianGradient()
{
var centerVector = new CIVector(100, 100); // Default is [150 150]
var color1 = CIColor.FromRgba(1, 0, 1, 1);
var color0 = CIColor.FromRgba(0, 1, 1, 1);
var gaussGradient = new CIGaussianGradient()
{
Center = centerVector,
Color0 = color0,
Color1 = color1,
Radius = 280f // Default is 300
};
return(Crop(gaussGradient));
}
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();
}
public CIImage ToneCurve()
{
var point0 = new CIVector(0, 0); // Default [0 0]
var point1 = new CIVector(.1F, .5F); // Default [.25 .25]
var point2 = new CIVector(.3F, .15F); // Default [.3 .15]
var point3 = new CIVector(.6F, .6F); // Default [.75 .75]
var point4 = new CIVector(1.1F, 1F); // Default [1 1]
var toneCurve = new CIToneCurve()
{
Image = flower,
Point0 = point0,
Point1 = point1,
Point2 = point2,
Point3 = point3,
Point4 = point4,
};
return(toneCurve.OutputImage);
}
public CIImage ColorMatrix()
{
var rVector = new CIVector(.5F, 0F, 0F); // Multiple the Red Values by .5 (s.r = dot(s, rVector))
var gVector = new CIVector(0F, 1.5F, 0F); // Multiple the Green Vector by 1.5 (s.g = dot(s, gVector))
var bVector = new CIVector(0F, 0F, .75F); // Multiple the Blue Vectoer by .75 (s.b = dot(s, bVector))
var aVector = new CIVector(0F, 0F, 0F, 1.25F); // Multiple the Alpha values by 1.25 (s.a = dot(s, bVector))
var biasVector = new CIVector(0, 1, 0, 0); // A Bias to be Added to each Color Vector (s = s + bias)
var colorMatrix = new CIColorMatrix()
{
Image = flower,
RVector = rVector,
GVector = gVector,
BVector = bVector,
AVector = aVector,
BiasVector = biasVector
};
return(colorMatrix.OutputImage);
}
NSObject [] GetParms()
{
switch (Type)
{
case CustomerFilterType.NoOpColor:
return(new NSObject[] { MyImage });
case CustomerFilterType.NoOpColorWithParam:
return(new NSObject[] { MyImage, new NSNumber(5) });
case CustomerFilterType.ColorPositionKernel:
var dod = MyImage.Extent;
double radius = 0.5 * Math.Sqrt(Math.Pow(dod.Width, 2) + Math.Pow(dod.Height, 2));
CIVector centerOffset = new CIVector((float)(dod.Size.Width * .5), (float)(dod.Size.Height * .5));
return(new NSObject[] { MyImage, centerOffset, new NSNumber(radius) });
case CustomerFilterType.NoOpWarpKernel:
return(new NSObject[] { });
}
throw new InvalidOperationException();
}
public CIImage GaussianGradient ()
{
var centerVector = new CIVector (100, 100); // Default is [150 150]
var color1 = CIColor.FromRgba (1, 0, 1, 1);
var color0 = CIColor.FromRgba (0, 1, 1, 1);
var gaussGradient = new CIGaussianGradient ()
{
Center = centerVector,
Color0 = color0,
Color1 = color1,
Radius = 280f // Default is 300
};
return Crop (gaussGradient);
}
public CIImage ToneCurve()
{
var point0 = new CIVector(0,0); // Default [0 0]
var point1 = new CIVector(.1F, .5F); // Default [.25 .25]
var point2 = new CIVector(.3F, .15F); // Default [.3 .15]
var point3 = new CIVector(.6F, .6F); // Default [.75 .75]
var point4 = new CIVector(1.1F, 1F); // Default [1 1]
var toneCurve = new CIToneCurve()
{
Image = flower,
Point0 = point0,
Point1 = point1,
Point2 = point2,
Point3 = point3,
Point4 = point4,
};
return toneCurve.OutputImage;
}
public CIImage ColorMatrix()
{
var rVector = new CIVector (.5F, 0F, 0F); // Multiple the Red Values by .5 (s.r = dot(s, rVector))
var gVector = new CIVector (0F, 1.5F, 0F); // Multiple the Green Vector by 1.5 (s.g = dot(s, gVector))
var bVector = new CIVector (0F, 0F, .75F); // Multiple the Blue Vectoer by .75 (s.b = dot(s, bVector))
var aVector = new CIVector (0F, 0F, 0F, 1.25F); // Multiple the Alpha values by 1.25 (s.a = dot(s, bVector))
var biasVector = new CIVector (0, 1, 0, 0); // A Bias to be Added to each Color Vector (s = s + bias)
var colorMatrix = new CIColorMatrix ()
{
Image = flower,
RVector = rVector,
GVector = gVector,
BVector = bVector,
AVector = aVector,
BiasVector = biasVector
};
return colorMatrix.OutputImage;
}
public CIImage LinearGradient()
{
var point0 = new CIVector(0, 0); // Default [0 0]
var point1 = new CIVector(250, 250); // Default [200 200]
var linearGrad = new CILinearGradient()
{
Point0 = point0,
Point1 = point1,
Color0 = new CIColor (UIColor.Red),
Color1 = new CIColor (UIColor.Blue)
};
return Crop (linearGrad);
}
public void DrawImage(Image image, Rectangle destRect, float srcX, float srcY, float srcWidth, float srcHeight, GraphicsUnit srcUnit, ImageAttributes imageAttrs)
{
if (image == null)
throw new ArgumentNullException ("image");
var srcRect1 = new RectangleF(srcX, srcY,srcWidth,srcHeight);
// If the source units are not the same we need to convert them
// The reason we check for Pixel here is that our graphics already has the Pixel's baked into the model view transform
if (srcUnit != graphicsUnit && srcUnit != GraphicsUnit.Pixel)
{
ConversionHelpers.GraphicsUnitConversion (srcUnit, graphicsUnit, image.HorizontalResolution, image.VerticalResolution, ref srcRect1);
}
// Obtain the subImage
var subImage = image.NativeCGImage.WithImageInRect (srcRect1.ToCGRect ());
// If we do not have anything to draw then we exit here
if (subImage.Width == 0 || subImage.Height == 0)
return;
// var transform = image.imageTransform;
//// // Reset our height on the transform to account for subImage
// transform.y0 = subImage.Height;
////
//// // Make sure we scale the image in case the source rectangle
//// // overruns our subimage bouncs width and/or height
// float scaleX = subImage.Width/srcRect1.Width;
// float scaleY = subImage.Height/srcRect1.Height;
// transform.Scale (scaleX, scaleY);
bool attributesSet = imageAttrs.isColorMatrixSet || imageAttrs.isGammaSet;
if (attributesSet) {
InitializeImagingContext ();
CIImage result = subImage;
if (imageAttrs.isColorMatrixSet) {
var ciFilter = CIFilter.FromName ("CIColorMatrix");
ciFilter.SetDefaults ();
ciFilter.SetValueForKey (result, new NSString ("inputImage"));
var inputRVector = new CIVector (imageAttrs.colorMatrix.Matrix00, imageAttrs.colorMatrix.Matrix01, imageAttrs.colorMatrix.Matrix02, imageAttrs.colorMatrix.Matrix03);
var inputGVector = new CIVector (imageAttrs.colorMatrix.Matrix10, imageAttrs.colorMatrix.Matrix11, imageAttrs.colorMatrix.Matrix12, imageAttrs.colorMatrix.Matrix13);
var inputBVector = new CIVector (imageAttrs.colorMatrix.Matrix20, imageAttrs.colorMatrix.Matrix21, imageAttrs.colorMatrix.Matrix22, imageAttrs.colorMatrix.Matrix23);
var inputAVector = new CIVector (imageAttrs.colorMatrix.Matrix30, imageAttrs.colorMatrix.Matrix31, imageAttrs.colorMatrix.Matrix32, imageAttrs.colorMatrix.Matrix33);
var inputBiasVector = new CIVector (imageAttrs.colorMatrix.Matrix40, imageAttrs.colorMatrix.Matrix41, imageAttrs.colorMatrix.Matrix42, imageAttrs.colorMatrix.Matrix43);
ciFilter.SetValueForKey (inputRVector, new NSString ("inputRVector"));
ciFilter.SetValueForKey (inputGVector, new NSString ("inputGVector"));
ciFilter.SetValueForKey (inputBVector, new NSString ("inputBVector"));
ciFilter.SetValueForKey (inputAVector, new NSString ("inputAVector"));
ciFilter.SetValueForKey (inputBiasVector, new NSString ("inputBiasVector"));
result = (CIImage)ciFilter.ValueForKey (new NSString ("outputImage"));
}
if (imageAttrs.isGammaSet) {
var ciFilter = CIFilter.FromName ("CIGammaAdjust");
ciFilter.SetDefaults ();
ciFilter.SetValueForKey (result, new NSString ("inputImage"));
var inputPower = NSNumber.FromFloat (imageAttrs.gamma);
ciFilter.SetValueForKey (inputPower, new NSString ("inputPower"));
result = (CIImage)ciFilter.ValueForKey (new NSString ("outputImage"));
}
subImage = ciContext.CreateCGImage (result, result.Extent);
}
transform = image.imageTransform;
transform.y0 = subImage.Height;
float scaleX1 = subImage.Width/srcRect1.Width;
float scaleY1 = subImage.Height/srcRect1.Height;
transform.Scale (scaleX1, scaleY1);
// Now draw our image
DrawImage (destRect, subImage, transform);
}
public void DrawImage(Image image, Rectangle destRect, float srcX, float srcY, float srcWidth, float srcHeight, GraphicsUnit srcUnit, ImageAttributes imageAttrs)
{
if (image == null)
{
throw new ArgumentNullException("image");
}
var srcRect1 = new RectangleF(srcX, srcY, srcWidth, srcHeight);
// If the source units are not the same we need to convert them
// The reason we check for Pixel here is that our graphics already has the Pixel's baked into the model view transform
if (srcUnit != graphicsUnit && srcUnit != GraphicsUnit.Pixel)
{
ConversionHelpers.GraphicsUnitConversion(srcUnit, graphicsUnit, image.HorizontalResolution, image.VerticalResolution, ref srcRect1);
}
if (image.NativeCGImage == null)
{
DrawImage(image, destRect);
return;
}
// Obtain the subImage
var subImage = image.NativeCGImage.WithImageInRect(srcRect1.ToCGRect());
// If we do not have anything to draw then we exit here
if (subImage.Width == 0 || subImage.Height == 0)
{
return;
}
// var transform = image.imageTransform;
//// // Reset our height on the transform to account for subImage
// transform.y0 = subImage.Height;
////
//// // Make sure we scale the image in case the source rectangle
//// // overruns our subimage bouncs width and/or height
// float scaleX = subImage.Width/srcRect1.Width;
// float scaleY = subImage.Height/srcRect1.Height;
// transform.Scale (scaleX, scaleY);
bool attributesSet = imageAttrs != null && (imageAttrs.isColorMatrixSet || imageAttrs.isGammaSet);
if (attributesSet)
{
InitializeImagingContext();
CIImage result = subImage;
if (imageAttrs.isColorMatrixSet)
{
var ciFilter = CIFilter.FromName("CIColorMatrix");
ciFilter.SetDefaults();
ciFilter.SetValueForKey(result, new NSString("inputImage"));
var inputRVector = new CIVector(imageAttrs.colorMatrix.Matrix00, imageAttrs.colorMatrix.Matrix01, imageAttrs.colorMatrix.Matrix02, imageAttrs.colorMatrix.Matrix03);
var inputGVector = new CIVector(imageAttrs.colorMatrix.Matrix10, imageAttrs.colorMatrix.Matrix11, imageAttrs.colorMatrix.Matrix12, imageAttrs.colorMatrix.Matrix13);
var inputBVector = new CIVector(imageAttrs.colorMatrix.Matrix20, imageAttrs.colorMatrix.Matrix21, imageAttrs.colorMatrix.Matrix22, imageAttrs.colorMatrix.Matrix23);
var inputAVector = new CIVector(imageAttrs.colorMatrix.Matrix30, imageAttrs.colorMatrix.Matrix31, imageAttrs.colorMatrix.Matrix32, imageAttrs.colorMatrix.Matrix33);
var inputBiasVector = new CIVector(imageAttrs.colorMatrix.Matrix40, imageAttrs.colorMatrix.Matrix41, imageAttrs.colorMatrix.Matrix42, imageAttrs.colorMatrix.Matrix43);
ciFilter.SetValueForKey(inputRVector, new NSString("inputRVector"));
ciFilter.SetValueForKey(inputGVector, new NSString("inputGVector"));
ciFilter.SetValueForKey(inputBVector, new NSString("inputBVector"));
ciFilter.SetValueForKey(inputAVector, new NSString("inputAVector"));
ciFilter.SetValueForKey(inputBiasVector, new NSString("inputBiasVector"));
result = (CIImage)ciFilter.ValueForKey(new NSString("outputImage"));
}
if (imageAttrs.isGammaSet)
{
var ciFilter = CIFilter.FromName("CIGammaAdjust");
ciFilter.SetDefaults();
ciFilter.SetValueForKey(result, new NSString("inputImage"));
var inputPower = NSNumber.FromFloat(imageAttrs.gamma);
ciFilter.SetValueForKey(inputPower, new NSString("inputPower"));
result = (CIImage)ciFilter.ValueForKey(new NSString("outputImage"));
}
subImage = ciContext.CreateCGImage(result, result.Extent);
}
transform = image.imageTransform;
transform.y0 = subImage.Height;
float scaleX1 = subImage.Width / srcRect1.Width;
float scaleY1 = subImage.Height / srcRect1.Height;
transform.Scale(scaleX1, scaleY1);
// Now draw our image
DrawImage(destRect, subImage, transform);
}
public CIImage RadialGradient()
{
var center = new CIVector(100, 100); // Default [150 150]
var radGradient = new CIRadialGradient()
{
Center = center,
Radius0 = 10F, // Default 5
Radius1 = 150F, // Default 100
Color0 = new CIColor(new CGColor(0, 255F, 0)), // Green
Color1 = new CIColor(new CGColor(0, 0, 0)) // Black
};
return Crop (radGradient);
}