public void Apply(PixelFunction pixelFunc, Rectangle region)
{
Rectangle rect = ClampRectangle(region, Bounds);
if (Rectangle.IsAreaNegativeOrEmpty(rect))
{
return;
}
int sourceOffset = rect.Y * ScanlineSize + rect.X * _bytesPerPixel;
for (int y = 0; y < rect.Height; y++)
{
int lineIndex = sourceOffset + y * ScanlineSize;
for (int x = 0; x < rect.Width; x++)
{
int index = lineIndex + x * _bytesPerPixel;
Color result = pixelFunc(new Color(
_data[index + 0],
_data[index + 1],
_data[index + 2],
_data[index + 3]));
_data[index + 0] = result.R;
_data[index + 1] = result.G;
_data[index + 2] = result.B;
_data[index + 3] = result.A;
}
}
}
// Calculates new pixel values using the given pixel function.
public static int[,] Compute(int[,] image, PixelFunction f)
{
int[,] result = new int[image.GetLength(0), image.GetLength(1)];
Parallel.For(0, image.GetLength(0) * image.GetLength(1), i =>
{
int x = i % image.GetLength(0);
int y = i / image.GetLength(0);
result[x, y] = f(image[x, y]);
});
return(result);
}
public void Apply(PixelFunction pixelFunc)
{
Apply(pixelFunc, Bounds);
}
public void Apply(PixelFunction pixelFunc, Rectangle region)
{
Rectangle rect = ClampRectangle(region, Bounds);
if (Rectangle.IsAreaNegativeOrEmpty(rect))
return;
int sourceOffset = rect.Y * ScanlineSize + rect.X * _bytesPerPixel;
for (int y = 0; y < rect.Height; y++) {
int lineIndex = sourceOffset + y * ScanlineSize;
for (int x = 0; x < rect.Width; x++) {
int index = lineIndex + x * _bytesPerPixel;
Color result = pixelFunc(new Color(
_data[index + 0],
_data[index + 1],
_data[index + 2],
_data[index + 3]));
_data[index + 0] = result.R;
_data[index + 1] = result.G;
_data[index + 2] = result.B;
_data[index + 3] = result.A;
}
}
}
public void Apply(PixelFunction pixelFunc)
{
Apply(pixelFunc, Bounds);
}
