Fake seams in POV-Ray

[Roland Melkert]

Here is a zoom in of one of LDView's sample models with a relatively large seam width value (0.75):


Here is most of the model, but with a ridiculously large seam width value (10);

Thanks Travis, I figures something like that was hoping for some alternative (been thinking about merging bevels somehow, but don't know how to do that universally).

I've added the 3 axis scaling method, works great.

Using a 0.3 seam (0.15 both sides of any brick)
   

Using 2.0 seam
   


Was fairly simple to do, just added min max vectors to the mesh2 objects as local objects:

Code:

#declare sf_3703_dot_dat=mesh2 {
 #local sfMin=<-160,-4,-10>;
 #local sfMax=<160,24,10>;
 vertex_vectors {
  ......
 }
 #if (doSeams) sfSeam(sfMin, sfMax) #end
#end

And the scaling itself is just a couple of vector operations

Code:

#macro sfSeam(sfMin, sfMax)
#local s=sfMax-sfMin;
#local c=sfMin+0.5*s;
#local ss=<
  #if (s.x<=seamSize) 0.0 #else seamSize #end,
  #if (s.y<=seamSize) 0.0 #else seamSize #end,
  #if (s.z<=seamSize) 0.0 #else seamSize #end
>;

translate -c
scale (s-ss)/s
translate c
#end

Thanks again for the insight.