It is an algorithm. First link here seemed very helpful: Perlin Noise Links
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I need help understanding height mapping
quote:Original post by Lukerdquote:
So, with the 256 shades of gray at your disposal, you decide the height of the terrain depending on the shade of gray. With 0 being black and 256 being white (or do I have them mixed up?)
Thats correct. And no you dont have them mixed up.
Not precisely: 255 is white. You can''t represent the number 256 with 8 bits, only 256 values (since they''re inclusive of 0).
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