private static Bitmap PixelateLockBitsParallel(Bitmap image, Rectangle rectangle, int pixelateSize)
{
using (LockBitmap lockBitmap = new LockBitmap(image))
{
var width = image.Width;
var height = image.Height;
for (Int32 xx = rectangle.X; xx < rectangle.X + rectangle.Width && xx < image.Width; xx += pixelateSize)
{
for (Int32 yy = rectangle.Y; yy < rectangle.Y + rectangle.Height && yy < image.Height; yy += pixelateSize)
{
Int32 offsetX = pixelateSize / 2;
Int32 offsetY = pixelateSize / 2;
// make sure that the offset is within the boundry of the image
while (xx + offsetX >= image.Width)
{
offsetX--;
}
while (yy + offsetY >= image.Height)
{
offsetY--;
}
// get the pixel color in the center of the soon to be pixelated area
Color pixel = lockBitmap.GetPixel(xx + offsetX, yy + offsetY);
// for each pixel in the pixelate size, set it to the center color
Parallel.For(xx, xx + pixelateSize, x =>
{
if (x < width)
{
Parallel.For(yy, yy + pixelateSize, y =>
{
if (y < height)
{
lockBitmap.SetPixel(x, y, pixel);
}
});
}
});
}
}
}
return(image);
}
private static Bitmap PixelateLockBitsParallel(Bitmap image, Rectangle rectangle, int pixelateSize)
{
using (LockBitmap lockBitmap = new LockBitmap(image))
{
var width = image.Width;
var height = image.Height;
for (Int32 xx = rectangle.X; xx < rectangle.X + rectangle.Width && xx < image.Width; xx += pixelateSize)
{
for (Int32 yy = rectangle.Y; yy < rectangle.Y + rectangle.Height && yy < image.Height; yy += pixelateSize)
{
Int32 offsetX = pixelateSize / 2;
Int32 offsetY = pixelateSize / 2;
// make sure that the offset is within the boundry of the image
while (xx + offsetX >= image.Width) offsetX--;
while (yy + offsetY >= image.Height) offsetY--;
// get the pixel color in the center of the soon to be pixelated area
Color pixel = lockBitmap.GetPixel(xx + offsetX, yy + offsetY);
// for each pixel in the pixelate size, set it to the center color
Parallel.For(xx, xx + pixelateSize, x =>
{
if (x < width)
{
Parallel.For(yy, yy + pixelateSize, y =>
{
if (y < height)
{
lockBitmap.SetPixel(x, y, pixel);
}
});
}
});
}
}
}
return image;
}