Yadgar wrote:
>     #declare xpos=rand(r1)*20-10;
>     #declare zpos=rand(r2)*20-10;
>     #declare Terrain_Temporary=
>     object { Terrain translate <-xpos, 0, -zpos> }
>     #declare trvect=<0, 20, 0>;
>     #declare rad=0.01+rand(r3)/100*9;
>     #declare pos=trace(Terrain_Temporary, trvect, -trvect)+<0, rad, 0>;


  Looking at this code, I can't see how you would get any other result: you 
are tracing always from <0,20,0> to <0,-20,0>, so obviously the x and z 
coordinates of the intersection must be always 0. Or perhaps I didn't have 
enough coffee this morning? :)

I think moving around the terrain is a strange idea: you will be better 
moving around trvect.

Regards,

--
Jaime

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