Vladimir wrote:

> has anybody got any decent isosurface brick models ie a box with roughness
> from 3d noise/ pigment patterns. I have been trying to model on but as I'm
> not very good with isosurfaces am having difficulties
> Thanks.

Hi Vladimir,

Here is a very simple (and not too good looking) example I recently used:

#declare fnbumps = function{pigment{granite}}                           
#declare fntile = function{x}

#declare abrick = object
{
 isosurface
 {
        function{fntile(x,y,z) + fnbumps(x,y,z).x * 0.112}
        max_gradient 0.719
        threshold 1
        
        contained_by
                {
                        box {-2,2}
                }                 
         rotate y*-90
 }        
 scale <0.35,0.35,0.01955>
}
                                  
#declare wallbrick = object
{
    
        abrick
        material
        {
               texture
               {
                     T_Stone2
                     finish
                     {
                        diffuse 0.75  
                        ambient 0.75
                     }
               }
         }            
         scale <0.75,0.35,4>
         rotate x*90        
}  

#declare wall = union
{
#declare xloc = -0.23;
#declare yloc = yloc + (1 * yfac) - 0.75;

#declare xfac = 1.075;
#declare zfac = 0.515;

#declare xcount = 9;

#while (xcount > 0)

#declare zloc = -0.7;
#declare zcount = 9;

#while (zcount > 0)
 object
 {
  wallbrick
  translate <xloc,yloc,zloc>
 }                            
 #declare zloc = zloc + zfac;
 #declare zcount = zcount - 1;
 #end             
 #declare xloc = xloc - xfac;
 #declare xcount = xcount - 1;
#end   
}

difference
{
 object
 {
  wall
 } 
  
union
{  
 box { 
  <-1, -1, -1>, <1, 1, 1>
  material {
    texture
    {
     T_Stone2
    }
  }
  scale <1.203208, 0.270298, 1.833007>
  translate  <-2.401552, 9.975676, 0.716774>
 } 
  
 box { 
   <-1, -1, -1>, <1, 1, 1>
   material {
     texture
     {   
      T_Stone2
     } 
   }
   scale <1.794289, 0.270298, 1.256064>
   translate  <-6.768104, 9.975676, 1.286108>
   }//Box    
 }//Union
}//Difference 

-- 
Stefan Viljoen
Software Support Technician
Polar Design Solutions

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