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  Testing drawimage  (Read 1194 times)
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Offline mudman

Junior Member




Here we go again...


« Posted 2005-09-16 00:30:02 »

Hi, just wanted to test performance of drawing a tile as a single image versus cutting the tile from a larger image:

Method 1, single 32*32 image

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for(int i = 0; i < 30; i++)
   for(int j = 0; j < 20; j++)
   {
      g.drawImage(img, i*32, j*32, this);
      g.setColor(Color.red);
      g.fillRect(0, 0, 200, 50);
      g.setColor(Color.green);
      g.drawString("FPS: " + fps, 20, 20);
   }


Method 2: 32*32 fragment of 512*512 image
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for(int i = 0; i < 30; i++)
   for(int j = 0; j < 20; j++)
   {
      g.drawImage(img, i*32, j*32, i*32  + 32, j*32 + 32, 0, 0, 32, 32,this);
      g.setColor(Color.red);
      g.fillRect(0, 0, 200, 50);
      g.setColor(Color.green);
      g.drawString("FPS: " + fps, 20, 20);
   }


Conclusion: NO difference at all, I'm a happy camper:)

btw: I think I remember there is a name for this often used method?
Offline woogley
« Reply #1 - Posted 2005-09-16 02:14:15 »

"cropping" and "tiling" are some common words for that..
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