146 lines
3.6 KiB
C
146 lines
3.6 KiB
C
/* tri2obj.c -- read in a .ele/.node file pair generated by the triangle
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* program and output a simple Wavefront .obj file.
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*
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* Written by Curtis Olson, started October 1997.
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*
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* Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id$
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* (Log is kept at end of this file)
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*/
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#include <stdio.h>
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#include <string.h>
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#include "tri2obj.h"
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int nodecount, tricount;
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double nodes[MAX_NODES][3];
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int tris[MAX_TRIS][3];
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int new_tris[MAX_TRIS][3];
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/* Initialize a new mesh structure */
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void triload(char *basename) {
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char nodename[256], elename[256];
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FILE *node, *ele;
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int dim, junk1, junk2;
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int i;
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strcpy(nodename, basename);
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strcat(nodename, ".node");
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strcpy(elename, basename);
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strcat(elename, ".ele");
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printf("Loading node file: %s ...\n", nodename);
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if ( (node = fopen(nodename, "r")) == NULL ) {
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printf("Cannot open file '%s'\n", nodename);
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exit(-1);
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}
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fscanf(node, "%d %d %d %d", &nodecount, &dim, &junk1, &junk2);
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if ( nodecount > MAX_NODES - 1 ) {
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printf("Error, too many nodes, need to increase array size\n");
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exit(-1);
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} else {
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printf(" Expecting %d nodes\n", nodecount);
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}
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for ( i = 1; i <= nodecount; i++ ) {
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fscanf(node, "%d %lf %lf %lf %d\n", &junk1,
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&nodes[i][0], &nodes[i][1], &nodes[i][2], &junk2);
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/* printf("%d %.2f %.2f %.2f\n",
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junk1, nodes[i][0], nodes[i][1], nodes[i][2]); */
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}
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fclose(node);
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printf("Loading element file: %s ...\n", elename);
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if ( (ele = fopen(elename, "r")) == NULL ) {
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printf("Cannot open file '%s'\n", elename);
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exit(-1);
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}
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fscanf(ele, "%d %d %d", &tricount, &junk1, &junk2);
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if ( tricount > MAX_TRIS - 1 ) {
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printf("Error, too many elements, need to increase array size\n");
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exit(-1);
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} else {
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printf(" Expecting %d elements\n", tricount);
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}
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for ( i = 1; i <= tricount; i++ ) {
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fscanf(ele, "%d %d %d %d\n", &junk1,
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&tris[i][0], &tris[i][1], &tris[i][2]);
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/* printf("%d %d %d %d\n", junk1, tris[i][0], tris[i][1], tris[i][2]);*/
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}
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fclose(ele);
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}
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/* dump in WaveFront .obj format */
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void dump_obj(char *basename) {
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char objname[256];
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FILE *obj;
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int i;
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strcpy(objname, basename);
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strcat(objname, ".obj");
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printf("Dumping to file: %s ...\n", objname);
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obj = fopen(objname, "w");
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/* dump vertices */
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for ( i = 1; i <= nodecount; i++ ) {
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fprintf(obj, "v %.2f %.2f %.2f\n",
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nodes[i][0], nodes[i][1], nodes[i][2]);
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}
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/* dump faces */
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for ( i = 1; i <= tricount; i++ ) {
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fprintf(obj, "f %d %d %d\n", tris[i][0], tris[i][1], tris[i][2]);
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}
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fclose(obj);
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}
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int main(int argc, char **argv) {
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char basename[256];
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strcpy(basename, argv[1]);
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/* load the input data files */
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triload(basename);
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/* dump in WaveFront .obj format */
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dump_obj(basename);
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return(0);
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}
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/* $Log$
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/* Revision 1.1 1997/10/29 23:05:15 curt
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/* Initial revision.
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/*
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*/
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