NAME

        PDL::Graphics::TriD::Rout - Helper routines for Three-dimensional graphics


DESCRIPTION

This module is for miscellaneous PP-defined utility routines for the PDL::Graphics::TriD module. Currently, there are


AUTHOR

Copyright (C) 1997 Tuomas J. Lukka. All rights reserved. There is no warranty. You are allowed to redistribute this software / documentation under certain conditions. For details, see the file COPYING in the PDL distribution. If this file is separated from the PDL distribution, the copyright notice should be included in the file.


FUNCTIONS

combcoords

  Signature: (x(); y(); z();
                float [o]coords(tri=3);)

combcoords

Combine three coordinates into a single piddle.

Combine x, y and z to a single piddle the first dimension of which is 3. This routine does dataflow automatically.

repulse

  Signature: (coords(nc,np);
                 [o]vecs(nc,np);
                 int [t]links(np);; 
                double boxsize;
                int dmult;
                double a;
                double b;
                double c;
                double d;
        )

Repulsive potential for molecule-like constructs.

repulse uses a hash table of cubes to quickly calculate a repulsive force that vanishes at infinity for many objects. For use by the module PDL::Graphics::TriD::MathGraph. For definition of the potential, see the actual function.

attract

  Signature: (coords(nc,np);
                int from(nl);
                int to(nl);
                strength(nl);
                [o]vecs(nc,np);; 
                double m;
                double ms;
        )

Attractive potential for molecule-like constructs.

attract is used to calculate an attractive force for many objects, of which some attract each other (in a way like molecular bonds). For use by the module PDL::Graphics::TriD::MathGraph. For definition of the potential, see the actual function.

vrmlcoordsvert

  Signature: (vertices(n=3); char* space; char* fd)

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