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[Software] GRASS Source Code: s.delaunay

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Program to create a vector delaunay triangulation from a sites file. Delaunay triangualtion is based on the 'hull' software, by Ken Clarkson (clarkson@research.att.com ). See the directory hull for more details.




Jo Wood, Department of Geography.  19th July, 1995.



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Modified to use the GRASS 4.2 sites API. Allows x,y,z,attribute format for 

sites files. This enables a single sites file to carry all necessary 

information for TIN construction.



Modified to allow VRML 1.0 output as indexed face set.



Jo Wood, 4th September, 1996



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Modified to allow vertical scaling of elevation values.



Jo Wood, 23rd July, 1997



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TODO:

	Constrain triangulation along channels and ridges.



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Usage:

 s.delaunay [-v] in=name out=name [zscale=value]



Flags:

  -v   Create VRML 1.0 output



Parameters:

      in   Sites file to process

     out   Vector map layer to contain delaunay triangulation.

  zscale   Vertical scaling of elevation.

           default: 1.0



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Last modified, 3rd August, 1997
jwo@le.ac.uk