public void Subtract(ref Sprite sp)
{
if (sp.Width != Width ||
sp.Height != Height)
{
return;
}
Bitmap sbmp = sp.GetBitmap(false);
Bitmap dbmp = GetBitmap(false);
int nPixels = Width * Height;
int nSame = 0;
int nNonTransp = 0;
unchecked
{
for (int i = 0; i < nPixels; i++)
{
int x = i % Width;
int y = i / Width;
Color dclr = dbmp.GetPixel(x, y);
Color sclr = sbmp.GetPixel(x, y);
if (sclr.A != 0)
{
nNonTransp++;
}
Color clr = dclr;
if (sclr == dclr)
{
clr = Color.FromArgb(0, 0, 0, 0);
nSame++;
}
sbmp.SetPixel(x, y, clr);
}
}
const int c_SubtractBias = 30;
if (nSame > nNonTransp * c_SubtractBias / 100)
{
Difference = true;
CreatePartition(sbmp);
}
}
public void Subtract( ref Sprite sp )
{
if (sp.Width != Width ||
sp.Height != Height)
{
return;
}
Bitmap sbmp = sp.GetBitmap( false );
Bitmap dbmp = GetBitmap( false );
int nPixels = Width*Height;
int nSame = 0;
int nNonTransp = 0;
unchecked
{
for (int i = 0; i < nPixels; i++)
{
int x = i%Width;
int y = i/Width;
Color dclr = dbmp.GetPixel( x, y );
Color sclr = sbmp.GetPixel( x, y );
if (sclr.A != 0)
{
nNonTransp++;
}
Color clr = dclr;
if (sclr == dclr)
{
clr = Color.FromArgb( 0, 0, 0, 0 );
nSame++;
}
sbmp.SetPixel( x, y, clr );
}
}
const int c_SubtractBias = 30;
if (nSame > nNonTransp*c_SubtractBias/100)
{
Difference = true;
CreatePartition( sbmp );
}
}