///////////////////////////////////////////////////////////////////////////
private static int GetColor(Layer.Mask mask, int x, int y)
{
int c = 255;
if (mask.PositionIsRelative)
{
x -= mask.Rect.X;
y -= mask.Rect.Y;
}
else
{
x = (x + mask.Layer.Rect.X) - mask.Rect.X;
y = (y + mask.Layer.Rect.Y) - mask.Rect.Y;
}
if (y >= 0 && y < mask.Rect.Height &&
x >= 0 && x < mask.Rect.Width)
{
int pos = y * mask.Rect.Width + x;
if (pos < mask.ImageData.Length)
{
c = mask.ImageData[pos];
}
else
{
c = 255;
}
}
return(c);
}
///////////////////////////////////////////////////////////////////////////
public static Bitmap DecodeImage(Layer.Mask mask)
{
Layer layer = mask.Layer;
if (mask.Rect.Width == 0 || mask.Rect.Height == 0)
{
return(null);
}
Bitmap bitmap = new Bitmap(mask.Rect.Width, mask.Rect.Height, PixelFormat.Format32bppArgb);
Rectangle r = new Rectangle(0, 0, bitmap.Width, bitmap.Height);
BitmapData bd = bitmap.LockBits(r, ImageLockMode.ReadWrite, bitmap.PixelFormat);
unsafe
{
byte *pCurrRowPixel = (byte *)bd.Scan0.ToPointer();
for (int y = 0; y < mask.Rect.Height; y++)
{
int rowIndex = y * mask.Rect.Width;
PixelData *pCurrPixel = (PixelData *)pCurrRowPixel;
for (int x = 0; x < mask.Rect.Width; x++)
{
int pos = rowIndex + x;
Color pixelColor = Color.FromArgb(mask.ImageData[pos], mask.ImageData[pos], mask.ImageData[pos]);
pCurrPixel->Alpha = 255;
pCurrPixel->Red = pixelColor.R;
pCurrPixel->Green = pixelColor.G;
pCurrPixel->Blue = pixelColor.B;
pCurrPixel += 1;
}
pCurrRowPixel += bd.Stride;
}
}
bitmap.UnlockBits(bd);
return(bitmap);
}