public override void Process(ImageBuffer buffer)
{
// TODO: Implement feSpecularLighting filter Process().
}
public override void Process(ImageBuffer buffer)
{
var inputImage = buffer[this.Input];
if (inputImage == null)
{
return;
}
float[][] colorMatrixElements;
float value;
switch (this.Type)
{
case SvgColourMatrixType.HueRotate:
value = (string.IsNullOrEmpty(this.Values) ? 0 : float.Parse(this.Values));
colorMatrixElements = new float[][] {
new float[] { (float)(0.213 + Math.Cos(value) * +0.787 + Math.Sin(value) * -0.213),
(float)(0.715 + Math.Cos(value) * -0.715 + Math.Sin(value) * -0.715),
(float)(0.072 + Math.Cos(value) * -0.072 + Math.Sin(value) * +0.928), 0, 0 },
new float[] { (float)(0.213 + Math.Cos(value) * -0.213 + Math.Sin(value) * +0.143),
(float)(0.715 + Math.Cos(value) * +0.285 + Math.Sin(value) * +0.140),
(float)(0.072 + Math.Cos(value) * -0.072 + Math.Sin(value) * -0.283), 0, 0 },
new float[] { (float)(0.213 + Math.Cos(value) * -0.213 + Math.Sin(value) * -0.787),
(float)(0.715 + Math.Cos(value) * -0.715 + Math.Sin(value) * +0.715),
(float)(0.072 + Math.Cos(value) * +0.928 + Math.Sin(value) * +0.072), 0, 0 },
new float[] { 0, 0, 0, 1, 0 },
new float[] { 0, 0, 0, 0, 1 }
};
break;
case SvgColourMatrixType.LuminanceToAlpha:
colorMatrixElements = new float[][] {
new float[] { 0, 0, 0, 0, 0 },
new float[] { 0, 0, 0, 0, 0 },
new float[] { 0, 0, 0, 0, 0 },
new float[] { 0.2125f, 0.7154f, 0.0721f, 0, 0 },
new float[] { 0, 0, 0, 0, 1 }
};
break;
case SvgColourMatrixType.Saturate:
value = (string.IsNullOrEmpty(this.Values) ? 1 : float.Parse(this.Values));
colorMatrixElements = new float[][] {
new float[] { (float)(0.213 + 0.787 * value), (float)(0.715 - 0.715 * value), (float)(0.072 - 0.072 * value), 0, 0 },
new float[] { (float)(0.213 - 0.213 * value), (float)(0.715 + 0.285 * value), (float)(0.072 - 0.072 * value), 0, 0 },
new float[] { (float)(0.213 - 0.213 * value), (float)(0.715 - 0.715 * value), (float)(0.072 + 0.928 * value), 0, 0 },
new float[] { 0, 0, 0, 1, 0 },
new float[] { 0, 0, 0, 0, 1 }
};
break;
default: // Matrix
var parts = this.Values.Replace(" ", " ").Split(new char[] { ' ', '\t', '\n', '\r', ',' });
colorMatrixElements = new float[5][];
for (int i = 0; i < 4; i++)
{
colorMatrixElements[i] = parts.Skip(i * 5).Take(5).Select(v => float.Parse(v)).ToArray();
}
colorMatrixElements[4] = new float[] { 0, 0, 0, 0, 1 };
break;
}
var colorMatrix = new ColorMatrix(colorMatrixElements);
using (var imageAttrs = new ImageAttributes())
{
imageAttrs.SetColorMatrix(colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap);
var result = new Bitmap(inputImage.Width, inputImage.Height);
using (var g = Graphics.FromImage(result))
{
g.DrawImage(inputImage, new Rectangle(0, 0, inputImage.Width, inputImage.Height),
0, 0, inputImage.Width, inputImage.Height, GraphicsUnit.Pixel, imageAttrs);
g.Flush();
}
buffer[this.Result] = result;
}
}
