Yadgar wrote:
> High!
> 
> In order to get really smooth surfaces from 2D height maps (not just 
> playing with normals!), I tried to write a procedure for generating 
> joined 4 x 4 (each overlapping by one column or row) bicubic patches 
> (see code posted in p.b.s-f) form 16bit images usually used for 
> heightfields.
> 
> But when doing a test render, I had to realize that the two 4 x 4 
> sections do not align in the y direction, as you can see in the image 
> attached here! What went wrong?
>
I don't know but in the past I have had reasonable results joining them 
edge to edge to recreate a surface based on a pattern such as bozo.

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