What is the difference between the subdivision 1 and the subdivision 2?
The subdivision principle is explained in the introduction. Subdivision 1 uses the “exclusive or” (NOR) instead of add and subtract for moving the altitude of the points on the surface (making “hills” and “holes”). while subdivision 2 uses add and subtract. Subdivision 1 is a lot faster because the “NOR” doesn’t involve managing the overflows (over 65535) or the underflows (under 0). Because it’s faster, it is the process used by the default height field pen. Subdivision 1 height fields seem more rough, like if they were stratified with a lot of noise. Sometimes they look more insteresting than subidivision 2 height fields. Subdivision 1, however, gives less control over the result than subidivision 2. Subdivision 2 provides parameters to control the distribution of the hills and holes, so that they are not too regularly scattered on the ground plane. It is also possible to control the amplitude of wave lengths composing the heightfield. A 0 ampiltude means that the corresponding frequ
Related Questions
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