.TH repros2visu 1 "1 Oct 1993"
.SH NAME
repros2visu \-  convert repros surface output to several formats
.SH SYNOPSIS
.B repros2visu
.I \fItriangle_file\fR
.I \fIcnt_file\fR.new
.I \fIoutput_file\fR
[\|\fB\-obj\fR\|] 
[\|\fB\-off\fR\|] 
[\|\fB\-dxf\fR\|] 
[\|\fB\-act\fR\|] 
[\|\fB\-vera\fR\|] 
[\|\fB\-idx\fR\|] 
[\|\fB\-h\fR\|] 
[\|\fB\-r\fR \fInb\fR\|] 
[\|\fB\-n\fR \fInb\fR\|] 
[\|\fB\-t \fIstring\fR\|] 
[\|\fB\-o \fIobject_name\fR\|] 
[\|\fB\-max_vertex\fR \fInb\fR\|] 
[\|\fB\-max_facett\fR \fInb\fR\|] 

.SH DESCRIPTION
.PP
.I repros2visu
is a program that reads repros surface output data, removes superfluous
triangles and interpolates normals for Gouraud shading.

.SH OPTIONS
.PP

.IP "\fB\fItriangle_file\fR" 14
triangle output of \fIrepros(1)\fR.

.IP "\fB\fIcnt_file\fR.new"
new contour file modified by \fIrepros(1)\fR.

.IP "\fB\fIoutput_file\fR"
list of triangles and normals.

.IP "\fB\-h\fR"
remove all horizontal triangles

.IP "\fB\-r\fR \fInb\fR" 
remove all horizontal triangles in cross-section number \fInb\fR.

.IP "\fB\-n \fInb\fR" 
do not interpolate normals at cross-section number \fInb\fR.

.IP "\fB\-t \fIstring\fR"
insert \fIstring\fR as header in \fIoutput_file\fR.


.IP "\fB\-obj\fR"
write output in wavefront .obj format (default).

.IP "\fB\-off\fR"
write output in OFF format.

.IP "\fB\-dxf\fR"
write output in autocad DXF format.

.IP "\fB\-idx\fR"
write output in index format.
In the first line is the number of slices, indicated by the letter S.
The number of slices is equal to the number of cross-sections-1.
For each cross-section we have a vertex block, and for each
slice we have a triangle block. A vertex block starts with the letter
V, then follows the number of vertices, and information about the
plane the vertices are lying on. V 23 z 10.000 indicates a Vertex
block with 23 vertices, all lying in the plane z=10.0.
A triangle block is indicated by the letter T, followed by the number of
triangles.
A vertex line contains two coordinates and three floating values representing
the interpolated normal of that vertex.
A triangle line contains three indices in the vertex list.
Vertex indices start at 0.


.IP "\fB\-vera\fR"
write output in vera format.
list of triangles and normals. A triangle is represented by
   p1x p1y p1z   p2x p2y p2z   p3x p3y p3z
   n1x n1y n1z   n2x n2y n2z   n3x n3y n3z

with pix piy piz the coordinates of vertex i and
nix niy niz the interpolated normal of vertex i (i = 1..3).


.IP "\fB\-act\fR"
write output in act format.

.IP "\fB\-o \fIobject_name\fR"
set group name in obj format to \fIobject_name\fR. Default is "object".
set object name in act format to \fIobject_name\fR. Default is "object".

.IP "\fB\-max_vertex\fR \fInb\fR" 
Set maxnumber of vertices per cross-section to \fInb\fR. Default is 10000.

.IP "\fB\-max_facett\fR \fInb\fR" 
Set maxnumber of triangles per slice to \fInb\fR. Default is 4*(max_vertex-1).


.SH BUGS
option -n does not work with first and last cross-section for obj and index
format output.

.SH SEE ALSO
repros(1), prepros(1), repros2tetra(1), nuages(1)
.SH AUTHOR
Bernhard Geiger
Copyright (C) 1993 by INRIA Sophia Antipolis

Permission to use, copy, modify, and distribute this
software and its documentation for educational, research,
and non-profit purposes without fee is hereby granted, provided that the
above copyright notice and the original authors name appear in all copies
and that both that copyright notice and this permission notice appear in
supporting documentation. This software is provided "as is" without express
or implied warranty.