#region UICode
#endregion

bool Check(Surface src, int x, int y, Rectangle selection, 
           int dx, int dy, int r, int g, int b)
{
    return x+dx < selection.Right && y+dy < selection.Bottom && 
        src[x+dx,y+dy].R == r  && src[x+dx,y+dy].G == g && src[x+dx,y+dy].B == b;
}

void Render(Surface dst, Surface src, Rectangle rect)
{
    Rectangle selection = this.EnvironmentParameters.GetSelection(src.Bounds).GetBoundsInt();
    ColorBgra CurrentPixel;
    for (int y = rect.Top; y < rect.Bottom; y++)
    {
        for (int x = rect.Left; x < rect.Right; x++)
        {
            CurrentPixel = src[x,y];
            bool isMaster = false;
            for (int dx = 0; dx < 22 && dx <= (x-selection.Left); dx++)
                for (int dy = 0; dy < 22 && dy <= (y-selection.Top); dy++)
                    if (Check(src, x-dx, y-dy, selection, 0, 0, 0, 0, 0))
                    {
                        if (Check(src, x-dx, y-dy, selection, 6, 5, 180, 182, 0))
                        {
                                isMaster = true;
                        }
                    }
            if (isMaster)
            {
                CurrentPixel.A = 0;
                CurrentPixel.R = 0;
                CurrentPixel.G = 0;
                CurrentPixel.B = 0;
            }
            dst[x,y] = CurrentPixel;
        }
    }
}