plcombine(3gv) [debian man page]

plcombine(3gv)															    plcombine(3gv)

NAME

       PLCombine - polylist two polylists (OFF file format) into one

SYNOPSIS

       Geom *PLCombine(Geom *, Geom *);

DESCRIPTION

       PLCombine() combines two polylists into a single polylist and returns the new polylist.	If either of the old polylists was NULL, a copy of
       the other polylist (or NULL if both polylists were NULL) is returned.  PLCombine() will generate an error if either of the  parameters  was
       not of the polylist type.

       If  the	two  polylists	represent color in an inconsistant way, PLCombine will attempt to preserve the color data.  If either polylist has
       per-polygon colors, the result will have per-polygon colors.  If the other object originally had per-vertex colors, the color of the  first
       point of each polygon will be used as the color of the polygon.	If the other polylist originally had no colors, the rgba value 0.15, 0.15,
       0.15, 1.0 will be used as the color of each of that polyline's polygons.

       If neither of the polylists had per-polygon colors but one had per-vertex colors, the value 0.15, 0.15, 0.15, 1.0 will be used as the color
       value for each of the vertices of the colorless polylist.

       If neither polylist had color data, the result will not have color date.

       The  result of PLCombine() will not include  normal data if the two polylists represent normals in an inconsistent way, for example, if one
       has per-vertex data and one has per-face data or one has per-vertex data and one has no data.

LINKING

       PLCombine() is part of the geomutil library; see geomutil(3) for information on how to link your program with this library.

SEE ALSO

       offcombine(1), geomview(1), geomutil(3)

AUTHOR

       Celeste Fowler
       The Geometry Center

Geometry Center 						   June 15, 1992						    plcombine(3gv)

Check Out this Related Man Page

bdy(1gv)																  bdy(1gv)

NAME

       bdy - boundary curve finder

SYNOPSIS

       bdy [precision]

DESCRIPTION

       Bdy  is	a filter used to find boundary curves in Geomview objects.  The program reads a geomview object from standard input and prints the
       resultant vector object to standard output.  Bdy finds the segments of the vector by first converting the given object into a polylist (See
       anytooff(1)).   Then,  it  finds  all  edges  used  once  and only once in the polylist and combines these edges into a vector object.  The
       optional precision arguement specifies the maximum distance between vertices that are to be considered identical.  By default, it is set to
       0.0,  indicating  that the vertices must be numerically identical.  It may sometimes be necessary to set it to a higher value to compensate
       for floating-point error.

       The vector object is always black.

BUGS

       The vector object is not a particularly compact representation of itself, since it contains many 2-vertex segments which could be combined.

SEE ALSO

       geomview(1), anytooff(1), anytopl(3), bdy(3), offconsol(1), plconsol(3)

AUTHOR

       Celeste Fowler
       The Geometry Center

Geometry Center 						   June 12 1992 							  bdy(1gv)

Linux and UNIX Man Pages

plcombine(3gv) [debian man page]

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