public static void Recolor(this LocklessBitmap bitmap, float r, float g, float b)
{
for (int y = 0; y < bitmap.Height; y++)
{
for (int x = 0; x < bitmap.Width; x++)
{
Color pixel = bitmap.GetPixel(x, y);
byte rPixel = pixel.R;
byte gPixel = pixel.G;
byte bPixel = pixel.B;
if (r != 0)
{
rPixel = (byte)Math.Min((1 - r) * pixel.R, 255);
}
if (g != 0)
{
gPixel = (byte)Math.Min((1 - g) * pixel.G, 255);
}
if (b != 0)
{
bPixel = (byte)Math.Min((1 - b) * pixel.B, 255);
}
bitmap.SetPixel(x, y, Color.FromArgb(pixel.A, rPixel, gPixel, bPixel));
}
}
}
public void Copy(LocklessBitmap bitmap, Rectangle area)
{
for (int y = 0; y < area.Height; y++)
{
for (int x = 0; x < area.Width; x++)
{
SetPixel(x + area.X, y + area.Y, bitmap.GetPixel(x, y));
}
}
}
public static void SetToGrayscale(this LocklessBitmap bitmap)
{
for (int y = 0; y < bitmap.Height; y++)
{
for (int x = 0; x < bitmap.Width; x++)
{
int grayscale = bitmap.GetGrayscale(x, y);
bitmap.SetPixel(x, y, Color.FromArgb(bitmap.GetPixel(x, y).A, grayscale, grayscale, grayscale));
}
}
}
public static void Blacken(this LocklessBitmap bitmap, byte threshold)
{
for (int y = 0; y < bitmap.Height; y++)
{
int x = 0;
while (x <= bitmap.Width - 1 && bitmap.GetGrayscale(x, y) <= threshold)
{
bitmap.SetPixel(x, y, Color.FromArgb(bitmap.GetPixel(x, y).A, 0, 0, 0));
x++;
}
x = bitmap.Width - 1;
while (x >= 0 && bitmap.GetGrayscale(x, y) <= threshold)
{
bitmap.SetPixel(x, y, Color.FromArgb(bitmap.GetPixel(x, y).A, 0, 0, 0));
x--;
}
}
for (int x = 0; x < bitmap.Width; x++)
{
int y = 0;
while (y <= bitmap.Height - 1 && bitmap.GetGrayscale(x, y) <= threshold)
{
bitmap.SetPixel(x, y, Color.FromArgb(bitmap.GetPixel(x, y).A, 0, 0, 0));
y++;
}
y = bitmap.Height - 1;
while (y >= 0 && bitmap.GetGrayscale(x, y) <= threshold)
{
bitmap.SetPixel(x, y, Color.FromArgb(bitmap.GetPixel(x, y).A, 0, 0, 0));
y--;
}
}
}