void ApplyFilters()
{
float hue = hueSlider.Value;
float saturation = saturationSlider.Value;
float brightness = brightnessSlider.Value;
// Apply effects to image
CIImage result = null;
using (var colorControlsFilter = new CIColorControls()) {
colorControlsFilter.Image = baseCIImage;
colorControlsFilter.Saturation = saturation;
colorControlsFilter.Brightness = brightness;
result = colorControlsFilter.OutputImage;
}
using (var hueAdjustFilter = new CIHueAdjust()) {
hueAdjustFilter.Image = result;
hueAdjustFilter.Angle = hue;
result = hueAdjustFilter.OutputImage;
}
using (var context = CIContext.FromOptions(null)) {
using (CGImage cgImage = context.CreateCGImage(result, result.Extent)) {
if (imageView.Image != null)
{
imageView.Image.CGImage.Dispose();
imageView.Image.Dispose();
}
imageView.Image = UIImage.FromImage(cgImage);
}
}
result.Dispose();
}
void DarkenImage()
{
var img = image.Image;
var ciImage = new CIImage(img);
var hueAdjust = new CIHueAdjust(); // first filter
hueAdjust.Image = ciImage;
hueAdjust.Angle = 2.094f;
var sepia = new CISepiaTone(); // second filter
sepia.Image = hueAdjust.OutputImage; // output from last filter, input to this one
sepia.Intensity = 0.3f;
CIFilter color = new CIColorControls()
{ // third filter
Saturation = 2,
Brightness = 1,
Contrast = 3,
Image = sepia.OutputImage // output from last filter, input to this one
};
var output = color.OutputImage;
var context = CIContext.FromOptions(null);
// ONLY when CreateCGImage is called do all the effects get rendered
var cgimage = context.CreateCGImage(output, output.Extent);
var ui = UIImage.FromImage(cgimage);
image.Image = ui;
}
public CIImage HueAdjust()
{
var hueAdjust = new CIHueAdjust()
{
Image = flower,
Angle = 1F // Default is 0
};
return(hueAdjust.OutputImage);
}
void DarkenImage()
{
var img = image.Image;
var ciImage = new CIImage(img);
var hueAdjust = new CIHueAdjust(); // first filter
hueAdjust.Image = ciImage;
hueAdjust.Angle = 2.094f;
var sepia = new CISepiaTone(); // second filter
sepia.Image = hueAdjust.OutputImage; // output from last filter, input to this one
sepia.Intensity = 0.3f;
CIFilter color = new CIColorControls()
{ // third filter
Saturation = 2,
Brightness = 1,
Contrast = 3,
Image = sepia.OutputImage // output from last filter, input to this one
};
var output = color.OutputImage;
var context = CIContext.FromOptions(null);
// ONLY when CreateCGImage is called do all the effects get rendered
var cgimage = context.CreateCGImage(output, output.Extent);
var ui = UIImage.FromImage(cgimage);
image.Image = ui;
}
public CIImage HueAdjust()
{
var hueAdjust = new CIHueAdjust()
{
Image = flower,
Angle = 1F // Default is 0
};
return hueAdjust.OutputImage;
}
void ApplyFilters()
{
float hue = hueSlider.Value;
float saturation = saturationSlider.Value;
float brightness = brightnessSlider.Value;
// Apply effects to image
CIImage result = null;
using(var colorControlsFilter = new CIColorControls ()) {
colorControlsFilter.Image = baseCIImage;
colorControlsFilter.Saturation = saturation;
colorControlsFilter.Brightness = brightness;
result = colorControlsFilter.OutputImage;
}
using(var hueAdjustFilter = new CIHueAdjust ()) {
hueAdjustFilter.Image = result;
hueAdjustFilter.Angle = hue;
result = hueAdjustFilter.OutputImage;
}
using (var context = CIContext.FromOptions (null)) {
using (CGImage cgImage = context.CreateCGImage (result, result.Extent)) {
if (imageView.Image != null) {
imageView.Image.CGImage.Dispose ();
imageView.Image.Dispose ();
}
imageView.Image = UIImage.FromImage (cgImage);
}
}
result.Dispose ();
}
