public int Fill(Context context)
{
Init(context);
Process(context.x, context.y);
bitmap = new Bitmap(bitmapWidth, bitmapHeight, bitmapStride, PixelFormat.Format32bppArgb, bitPtr);
context.bitmap = this.bitmap;
return 1;
}
public static Context getInstance()
{
if (instance == null)
{
instance = new Context();
}
return instance;
}
void Init(Context context)
{
startColor = new byte[] { context.colorStart.B, context.colorStart.G, context.colorStart.R };
byteFillColor = new byte[] { context.colorFill.B, context.colorFill.G, context.colorFill.R };
byteBoundColor = new byte[] { context.colorBoundary.B, context.colorBoundary.G, context.colorBoundary.R };
bitmapWidth = context.img.Width;
bitmapHeight = context.img.Height;
pixelFormatSize = Image.GetPixelFormatSize(PixelFormat.Format32bppArgb) / 8;
bitmapStride = bitmapWidth * pixelFormatSize;
padding = (bitmapStride % 4);
bitmapStride += padding == 0 ? 0 : 4 - padding;//pad out to multiple of 4
bitmapPixelFormatSize = pixelFormatSize;
bits = new byte[bitmapStride * bitmapWidth];
handle = GCHandle.Alloc(bits, GCHandleType.Pinned);
bitPtr = Marshal.UnsafeAddrOfPinnedArrayElement(bits, 0);
bitmap = new Bitmap(bitmapWidth, bitmapHeight, bitmapStride, PixelFormat.Format32bppArgb, bitPtr);
Graphics g = Graphics.FromImage(bitmap);
Bitmap bmImg = new Bitmap(context.img);
g.DrawImageUnscaledAndClipped(bmImg, new Rectangle(0, 0, bitmapWidth, bitmapHeight));
g.Dispose();
}