Is it possible to provide the prism construct with vertex coords from an
array?  I have the coordinates generated and in an array but if I use the
array variable instead of literal values it gives me a parse error saying,
"Expected 'numeric expression', array identifier found instead".  Any
ideas?

Thanks in advance!

Tim

My email is twy@_n0$p@m_shawbiz.ca.  Just remove the underscores and the
stuff between them.

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in news:web.4115b6f927ac47e07f3aa99d0@news.povray.org Administrator
wrote: 

> Is it possible to provide the prism construct with vertex coords from
> an array?

You have to get the values from the array 'manually', the prism won't do 
it for you, see example below:

---%<------%<---

#declare A=array[5]{<1,0>,<0,1>,<-1,0>,<0,-1>,<1,0>}

#declare NrPoints=dimension_size(A,1);

prism{
  linear_spline
  linear_sweep
  0,
  1,
  NrPoints,
  #declare I=0;
  #while (I<NrPoints)
    #local P=A[I];
    P
    #declare I=I+1;
  #end
  pigment { rgb 1}
}

---%<------%<---


Ingo

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