// The core of the application
private void step()
{
frames++;
generation++;
myMap map_alt = new myMap(rule,warp, map.getwidth, map.getheight);
//build using unsafe block, compile with /unsafe
//Maximum atainable framerate seems to be 64
//##############################################
BitmapData bmData = bitmap.LockBits(
new Rectangle(0, 0, bitmap.Width, bitmap.Height),
ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
int stride = bmData.Stride;
System.IntPtr Scan0 = bmData.Scan0;
unsafe
{
byte* p = (byte*)(void*)Scan0;
int nOffset = stride - bitmap.Width * 3;
for (int y = 0; y < bitmap.Height; ++y)
{
for (int x = 0; x < bitmap.Width; ++x)
{
if (map.getN(x, y))
{
map_alt.setPixel(x, y, true);
p[0] = p[1] = p[2] = (byte)(0); // there must be a better way
}
else
{
map_alt.setPixel(x, y, false);
p[0] = p[1] = p[2] = (byte)(255);
}
p += 3;
}
p += nOffset;
}
}
bitmap.UnlockBits(bmData);
//###############################################
//End unsafe
// Safe block runs at 50 fps
/*
for(int x=0; x<map.getwidth; x++)
{
for(int y=0; y<map.getheight; y++)
{
if(map.getN(x,y))
{
bitmap.SetPixel(x, y, alive);
map_alt.setPixel(x,y,true);
}
else
{
bitmap.SetPixel(x, y, dead);
map_alt.setPixel(x,y,false);
}
}
}
*/
// End safe block
map = map_alt;
Invalidate();
}
