protected override void SetBackgroundColor(Color color)
{
if (Control == null)
{
return;
}
if (s_currentColorFilter == null && color.IsDefault)
{
return;
}
if (color.IsDefault)
{
Control.ContentFilters = new CIFilter[0];
}
var newColor = Element.BackgroundColor.ToNSColor();
if (Equals(s_currentColor, newColor))
{
return;
}
s_currentColor = newColor;
s_currentColorFilter = new CIColorPolynomial
{
RedCoefficients = new CIVector(s_currentColor.RedComponent),
BlueCoefficients = new CIVector(s_currentColor.BlueComponent),
GreenCoefficients = new CIVector(s_currentColor.GreenComponent)
};
Control.ContentFilters = new CIFilter[] { s_currentColorFilter };
}
void UpdateColor()
{
var color = Element.Color;
if (s_currentColorFilter == null && color.IsDefault)
{
return;
}
if (color.IsDefault)
{
Control.ContentFilters = new CIFilter[0];
}
var newColor = Element.Color.ToNSColor();
if (Equals(s_currentColor, newColor))
{
return;
}
s_currentColor = newColor;
s_currentColorFilter = new CIColorPolynomial
{
RedCoefficients = new CIVector(s_currentColor.RedComponent),
BlueCoefficients = new CIVector(s_currentColor.BlueComponent),
GreenCoefficients = new CIVector(s_currentColor.GreenComponent)
};
Control.ContentFilters = new CIFilter[] { s_currentColorFilter };
}
/// <summary>
/// Applies a Color Polynomial to each pixel of of an image.
/// </summary>
/// <returns>The altered image.</returns>
public CIImage ColorPolynomial()
{
var color_polynomial = new CIColorPolynomial ()
{
Image = flower,
RedCoefficients = new CIVector (0, 0, 0, .4f),
GreenCoefficients = new CIVector (0, 0, .5f, .8f),
BlueCoefficients = new CIVector (0, 0, .5f, 1),
AlphaCoefficients = new CIVector (0, 1, 1, 1),
};
return color_polynomial.OutputImage;
}