+++ /dev/null
-/* tri2obj.c -- read in a .ele/.node file pair generated by the triangle
- * program and output a simple Wavefront .obj file.
- *
- * Written by Curtis Olson, started October 1997.
- *
- * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
- * (Log is kept at end of this file)
- */
-
-
-#include <stdio.h>
-#include <stdlib.h> /* for atoi() */
-#include <string.h>
-#include <sys/stat.h> /* for stat() */
-#include <unistd.h> /* for stat() */
-
-#include "tri2obj.h"
-
-#include <Include/fg_constants.h>
-#include <Include/fg_types.h>
-#include <Bucket/bucketutils.h>
-
-#include <Math/fg_geodesy.h>
-#include <Math/mat3.h>
-#include <Math/polar3d.h>
-
-
-int nodecount, tricount;
-int normalcount = 0;
-static fgCartesianPoint3d nodes[MAX_NODES];
-static int tris[MAX_TRIS][3];
-
-static double normals[MAX_NODES][3];
-
-fgBUCKET my_index;
-fgBUCKET ne_index, nw_index, sw_index, se_index;
-fgBUCKET north_index, south_index, east_index, west_index;
-
-/* convert a geodetic point lon(arcsec), lat(arcsec), elev(meter) to
- * a cartesian point */
-fgCartesianPoint3d geod_to_cart(double geod[3]) {
- fgCartesianPoint3d cp;
- fgPolarPoint3d pp;
- double gc_lon, gc_lat, sl_radius;
-
- /* printf("A geodetic point is (%.2f, %.2f, %.2f)\n",
- geod[0], geod[1], geod[2]); */
-
- gc_lon = geod[0]*ARCSEC_TO_RAD;
- fgGeodToGeoc(geod[1]*ARCSEC_TO_RAD, geod[2], &sl_radius, &gc_lat);
-
- /* printf("A geocentric point is (%.2f, %.2f, %.2f)\n", gc_lon,
- gc_lat, sl_radius+geod[2]); */
-
- pp.lon = gc_lon;
- pp.lat = gc_lat;
- pp.radius = sl_radius+geod[2];
- cp = fgPolarToCart3d(pp);
-
- /* printf("A cart point is (%.8f, %.8f, %.8f)\n", cp.x, cp.y, cp.z); */
-
- return(cp);
-}
-
-
-/* given three points defining a triangle, calculate the normal */
-void calc_normal(fgCartesianPoint3d p1, fgCartesianPoint3d p2,
- fgCartesianPoint3d p3, double normal[3])
-{
- double v1[3], v2[3];
- double temp;
-
- v1[0] = p2.x - p1.x; v1[1] = p2.y - p1.y; v1[2] = p2.z - p1.z;
- v2[0] = p3.x - p1.x; v2[1] = p3.y - p1.y; v2[2] = p3.z - p1.z;
-
- MAT3cross_product(normal, v1, v2);
- MAT3_NORMALIZE_VEC(normal, temp);
-
-/* printf(" Normal = %.2f %.2f %.2f\n", normal[0], normal[1], normal[2]); */
-}
-
-
-/* return the index of all triangles containing the specified node */
-void find_tris(int n, int *t1, int *t2, int *t3, int *t4, int *t5) {
- int i;
-
- *t1 = *t2 = *t3 = *t4 = *t5 = 0;
-
- i = 1;
- while ( i <= tricount ) {
- if ( (n == tris[i][0]) || (n == tris[i][1]) || (n == tris[i][2]) ) {
- if ( *t1 == 0 ) {
- *t1 = i;
- } else if ( *t2 == 0 ) {
- *t2 = i;
- } else if ( *t3 == 0 ) {
- *t3 = i;
- } else if ( *t4 == 0 ) {
- *t4 = i;
- } else {
- *t5 = i;
- }
- }
- i++;
- }
-}
-
-
-/* return the file base name ( foo/bar/file.ext = file.ext ) */
-void extract_file(char *in, char *base) {
- int len, i;
-
- len = strlen(in);
-
- i = len - 1;
- while ( (i >= 0) && (in[i] != '/') ) {
- i--;
- }
-
- in += (i + 1);
- strcpy(base, in);
-}
-
-
-/* return the file path name ( foo/bar/file.ext = foo/bar ) */
-void extract_path(char *in, char *base) {
- int len, i;
-
- len = strlen(in);
- strcpy(base, in);
-
- i = len - 1;
- while ( (i >= 0) && (in[i] != '/') ) {
- i--;
- }
-
- base[i] = '\0';
-}
-
-
-/* check if a file exists */
-int file_exists(char *file) {
- struct stat stat_buf;
- int result;
-
- printf("checking %s ... ", file);
-
- result = stat(file, &stat_buf);
-
- if ( result != 0 ) {
- /* stat failed, no file */
- printf("not found.\n");
- return(0);
- } else {
- /* stat succeeded, file exists */
- printf("exists.\n");
- return(1);
- }
-}
-
-
-/* check to see if a shared object exists */
-int shared_object_exists(char *basepath, char *ext, char *file) {
- char scene_path[256];
- long int index;
-
- if ( strcmp(ext, ".sw") == 0 ) {
- fgBucketGenBasePath(&my_index, scene_path);
- index = fgBucketGenIndex(&my_index);
- sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&west_index, scene_path);
- index = fgBucketGenIndex(&west_index);
- sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&sw_index, scene_path);
- index = fgBucketGenIndex(&sw_index);
- sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&south_index, scene_path);
- index = fgBucketGenIndex(&south_index);
- sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- }
-
- if ( strcmp(ext, ".se") == 0 ) {
- fgBucketGenBasePath(&my_index, scene_path);
- index = fgBucketGenIndex(&my_index);
- sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&east_index, scene_path);
- index = fgBucketGenIndex(&east_index);
- sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&se_index, scene_path);
- index = fgBucketGenIndex(&se_index);
- sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&south_index, scene_path);
- index = fgBucketGenIndex(&south_index);
- sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- }
-
- if ( strcmp(ext, ".ne") == 0 ) {
- fgBucketGenBasePath(&my_index, scene_path);
- index = fgBucketGenIndex(&my_index);
- sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&east_index, scene_path);
- index = fgBucketGenIndex(&east_index);
- sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&ne_index, scene_path);
- index = fgBucketGenIndex(&ne_index);
- sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&north_index, scene_path);
- index = fgBucketGenIndex(&north_index);
- sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- }
-
- if ( strcmp(ext, ".nw") == 0 ) {
- fgBucketGenBasePath(&my_index, scene_path);
- index = fgBucketGenIndex(&my_index);
- sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&west_index, scene_path);
- index = fgBucketGenIndex(&west_index);
- sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&nw_index, scene_path);
- index = fgBucketGenIndex(&nw_index);
- sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&north_index, scene_path);
- index = fgBucketGenIndex(&north_index);
- sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- }
-
- if ( strcmp(ext, ".south") == 0 ) {
- fgBucketGenBasePath(&my_index, scene_path);
- index = fgBucketGenIndex(&my_index);
- sprintf(file, "%s/%s/%ld.1.south", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&south_index, scene_path);
- index = fgBucketGenIndex(&south_index);
- sprintf(file, "%s/%s/%ld.1.north", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- }
-
- if ( strcmp(ext, ".north") == 0 ) {
- fgBucketGenBasePath(&my_index, scene_path);
- index = fgBucketGenIndex(&my_index);
- sprintf(file, "%s/%s/%ld.1.north", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&north_index, scene_path);
- index = fgBucketGenIndex(&north_index);
- sprintf(file, "%s/%s/%ld.1.south", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- }
-
- if ( strcmp(ext, ".west") == 0 ) {
- fgBucketGenBasePath(&my_index, scene_path);
- index = fgBucketGenIndex(&my_index);
- sprintf(file, "%s/%s/%ld.1.west", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&west_index, scene_path);
- index = fgBucketGenIndex(&west_index);
- sprintf(file, "%s/%s/%ld.1.east", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- }
-
- if ( strcmp(ext, ".east") == 0 ) {
- fgBucketGenBasePath(&my_index, scene_path);
- index = fgBucketGenIndex(&my_index);
- sprintf(file, "%s/%s/%ld.1.east", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- fgBucketGenBasePath(&east_index, scene_path);
- index = fgBucketGenIndex(&east_index);
- sprintf(file, "%s/%s/%ld.1.west", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- }
-
- if ( strcmp(ext, ".body") == 0 ) {
- fgBucketGenBasePath(&my_index, scene_path);
- index = fgBucketGenIndex(&my_index);
- sprintf(file, "%s/%s/%ld.1.body", basepath, scene_path, index);
- if ( file_exists(file) ) {
- return(1);
- }
- }
-
- return(0);
-}
-
-
-/* given a file pointer, read all the vn (normals from it) */
-void read_normals(FILE *fp) {
- char line[256];
-
- while ( fgets(line, 250, fp) != NULL ) {
- if ( strncmp(line, "vn ", 3) == 0 ) {
- sscanf( line, "vn %lf %lf %lf\n",
- &normals[normalcount][0],
- &normals[normalcount][1],
- &normals[normalcount][2] );
- /*
- printf("read_normals(%d) %.2f %.2f %.2f %s", normalcount,
- normals[normalcount][0], normals[normalcount][1],
- normals[normalcount][2], line);
- */
- normalcount++;
- }
- }
-}
-
-
-/* my custom file opening routine ... don't open if a shared edge or
- * vertex alread exists */
-FILE *my_open(char *basename, char *basepath, char *ext) {
- FILE *fp;
- char filename[256];
-
- /* check if a shared object already exists */
- if ( shared_object_exists(basepath, ext, filename) ) {
- /* not an actual file open error, but we've already got the
- * shared edge, so we don't want to create another one */
- fp = fopen(filename, "r");
- printf("Opening %s\n", filename);
- return(fp);
- } else {
- /* open the file */
- printf("not opening\n");
- return(NULL);
- }
-}
-
-
-/* Initialize a new mesh structure */
-void triload(char *basename, char *basepath) {
- char nodename[256], elename[256];
- double n[3];
- FILE *ne, *nw, *se, *sw, *north, *south, *east, *west;
- FILE *node, *ele;
- int dim, junk1, junk2;
- int i;
-
- ne = my_open(basename, basepath, ".ne");
- read_normals(ne);
- fclose(ne);
-
- nw = my_open(basename, basepath, ".nw");
- read_normals(nw);
- fclose(nw);
-
- se = my_open(basename, basepath, ".se");
- read_normals(se);
- fclose(se);
-
- sw = my_open(basename, basepath, ".sw");
- read_normals(sw);
- fclose(sw);
-
- north = my_open(basename, basepath, ".north");
- read_normals(north);
- fclose(north);
-
- south = my_open(basename, basepath, ".south");
- read_normals(south);
- fclose(south);
-
- east = my_open(basename, basepath, ".east");
- read_normals(east);
- fclose(east);
-
- west = my_open(basename, basepath, ".west");
- read_normals(west);
- fclose(west);
-
- strcpy(nodename, basename);
- strcat(nodename, ".node");
- strcpy(elename, basename);
- strcat(elename, ".ele");
-
- printf("Loading node file: %s ...\n", nodename);
- if ( (node = fopen(nodename, "r")) == NULL ) {
- printf("Cannot open file '%s'\n", nodename);
- exit(-1);
- }
-
- fscanf(node, "%d %d %d %d", &nodecount, &dim, &junk1, &junk2);
-
- if ( nodecount > MAX_NODES - 1 ) {
- printf("Error, too many nodes, need to increase array size\n");
- exit(-1);
- } else {
- printf(" Expecting %d nodes\n", nodecount);
- }
-
- for ( i = 1; i <= nodecount; i++ ) {
- fscanf(node, "%d %lf %lf %lf %d\n", &junk1,
- &n[0], &n[1], &n[2], &junk2);
- /* printf("%d %.2f %.2f %.2f\n", junk1, n[0], n[1], n[2]); */
- nodes[i] = geod_to_cart(n);
- /* printf("%d %.2f %.2f %.2f\n",
- junk1, nodes[i].x, nodes[i].y, nodes[i].z); */
- }
-
- fclose(node);
-
- printf("Loading element file: %s ...\n", elename);
- if ( (ele = fopen(elename, "r")) == NULL ) {
- printf("Cannot open file '%s'\n", elename);
- exit(-1);
- }
-
- fscanf(ele, "%d %d %d", &tricount, &junk1, &junk2);
-
- if ( tricount > MAX_TRIS - 1 ) {
- printf("Error, too many elements, need to increase array size\n");
- exit(-1);
- } else {
- printf(" Expecting %d elements\n", tricount);
- }
-
- for ( i = 1; i <= tricount; i++ ) {
- fscanf(ele, "%d %d %d %d\n", &junk1,
- &tris[i][0], &tris[i][1], &tris[i][2]);
- /* printf("%d %d %d %d\n", junk1, tris[i][0], tris[i][1], tris[i][2]);*/
- }
-
- fclose(ele);
-}
-
-
-/* dump in WaveFront .obj format */
-void dump_obj(char *basename) {
- char objname[256];
- double n1[3], n2[3], n3[3], n4[3], n5[3], norm[3], temp;
- FILE *obj;
- int i, t1, t2, t3, t4, t5, count;
-
- strcpy(objname, basename);
- strcat(objname, ".obj");
-
- printf("Dumping to file: %s ...\n", objname);
-
- obj = fopen(objname, "w");
-
- /* dump vertices */
- printf(" writing vertices\n");
- for ( i = 1; i <= nodecount; i++ ) {
- fprintf(obj, "v %.6f %.6f %.6f\n",
- nodes[i].x, nodes[i].y, nodes[i].z);
- }
-
- printf(" calculating and writing normals\n");
- printf(" First %d normals taken from shared files.\n", normalcount);
-
- /* calculate and generate normals */
- for ( i = 1; i <= nodecount; i++ ) {
-
- if ( i <= normalcount ) {
- /* use precalculated (shared) normal */
- norm[0] = normals[i-1][0];
- norm[1] = normals[i-1][1];
- norm[2] = normals[i-1][2];
- } else {
- /* printf("Finding normal\n"); */
-
- find_tris(i, &t1, &t2, &t3, &t4, &t5);
-
- n1[0] = n1[1] = n1[2] = 0.0;
- n2[0] = n2[1] = n2[2] = 0.0;
- n3[0] = n3[1] = n3[2] = 0.0;
- n4[0] = n4[1] = n4[2] = 0.0;
- n5[0] = n5[1] = n5[2] = 0.0;
-
- count = 1;
- calc_normal(nodes[tris[t1][0]], nodes[tris[t1][1]],
- nodes[tris[t1][2]], n1);
-
- if ( t2 > 0 ) {
- calc_normal(nodes[tris[t2][0]], nodes[tris[t2][1]],
- nodes[tris[t2][2]], n2);
- count = 2;
- }
-
- if ( t3 > 0 ) {
- calc_normal(nodes[tris[t3][0]], nodes[tris[t3][1]],
- nodes[tris[t3][2]], n3);
- count = 3;
- }
-
- if ( t4 > 0 ) {
- calc_normal(nodes[tris[t4][0]], nodes[tris[t4][1]],
- nodes[tris[t4][2]], n4);
- count = 4;
- }
-
- if ( t5 > 0 ) {
- calc_normal(nodes[tris[t5][0]], nodes[tris[t5][1]],
- nodes[tris[t5][2]], n5);
- count = 5;
- }
-
- /* printf(" norm[2] = %.2f %.2f %.2f\n", n1[2], n2[2], n3[2]); */
-
- norm[0] = ( n1[0] + n2[0] + n3[0] + n4[0] + n5[0] ) / (double)count;
- norm[1] = ( n1[1] + n2[1] + n3[1] + n4[1] + n5[1] ) / (double)count;
- norm[2] = ( n1[2] + n2[2] + n3[2] + n4[2] + n5[2] ) / (double)count;
-
- /* printf(" count = %d\n", count); */
- /* printf(" Ave. normal = %.4f %.4f %.4f\n",
- norm[0], norm[1], norm[2]);*/
- MAT3_NORMALIZE_VEC(norm, temp);
- /* printf(" Normalized ave. normal = %.4f %.4f %.4f\n", */
- /* norm[0], norm[1], norm[2]); */
- }
- /* printf("%d vn %.4f %.4f %.4f\n", i, norm[0], norm[1], norm[2]); */
- fprintf(obj, "vn %.4f %.4f %.4f\n", norm[0], norm[1], norm[2]);
- }
-
- /* dump faces */
- printf(" writing faces\n");
- for ( i = 1; i <= tricount; i++ ) {
- fprintf(obj, "f %d %d %d\n", tris[i][0], tris[i][1], tris[i][2]);
- }
-
- fclose(obj);
-}
-
-int main(int argc, char **argv) {
- char basename[256], basepath[256], temp[256];
- long int tmp_index;
- int len;
-
- strcpy(basename, argv[1]);
-
- /* find the base path of the file */
- extract_path(basename, basepath);
- extract_path(basepath, basepath);
- extract_path(basepath, basepath);
- printf("%s\n", basepath);
-
- /* find the index of the current file */
- extract_file(basename, temp);
- len = strlen(temp);
- if ( len >= 2 ) {
- temp[len-2] = '\0';
- }
- tmp_index = atoi(temp);
- printf("%ld\n", tmp_index);
- fgBucketParseIndex(tmp_index, &my_index);
-
- printf("bucket = %d %d %d %d\n",
- my_index.lon, my_index.lat, my_index.x, my_index.y);
- /* generate the indexes of the neighbors */
- fgBucketOffset(&my_index, &ne_index, 1, 1);
- fgBucketOffset(&my_index, &nw_index, -1, 1);
- fgBucketOffset(&my_index, &se_index, 1, -1);
- fgBucketOffset(&my_index, &sw_index, -1, -1);
-
- fgBucketOffset(&my_index, &north_index, 0, 1);
- fgBucketOffset(&my_index, &south_index, 0, -1);
- fgBucketOffset(&my_index, &east_index, 1, 0);
- fgBucketOffset(&my_index, &west_index, -1, 0);
-
- /* load the input data files */
- triload(basename, basepath);
-
- /* dump in WaveFront .obj format */
- dump_obj(basename);
-
- return(0);
-}
-
-
-/* $Log$
-/* Revision 1.17 1998/07/04 00:56:40 curt
-/* typedef'd struct fgBUCKET.
-/*
- * Revision 1.16 1998/05/23 15:20:41 curt
- * Output more digits after the decimal place.
- *
- * Revision 1.15 1998/05/02 01:54:39 curt
- * Converting to polar3d.h routines.
- *
- * Revision 1.14 1998/04/18 04:01:32 curt
- * Now use libMath rather than having local copies of math routines.
- *
- * Revision 1.13 1998/04/14 02:26:11 curt
- * Code reorganizations. Added a Lib/ directory for more general libraries.
- *
- * Revision 1.12 1998/04/08 23:22:18 curt
- * Adopted Gnu automake/autoconf system.
- *
- * Revision 1.11 1998/03/03 16:01:00 curt
- * More c++ compile tweaks.
- *
- * Revision 1.10 1998/01/31 00:41:27 curt
- * Made a few changes converting floats to doubles.
- *
- * Revision 1.9 1998/01/27 18:37:04 curt
- * Lots of updates to get back in sync with changes made over in .../Src/
- *
- * Revision 1.8 1998/01/17 01:25:39 curt
- * Added support for shared normals.
- *
- * Revision 1.7 1998/01/12 02:42:00 curt
- * Average up to five triangles per vertex instead of three.
- *
- * Revision 1.6 1998/01/09 23:03:15 curt
- * Restructured to split 1deg x 1deg dem's into 64 subsections.
- *
- * Revision 1.5 1997/12/08 19:17:50 curt
- * Fixed a type in the normal generation code.
- *
- * Revision 1.4 1997/12/02 13:13:32 curt
- * Fixed problem with averaged vertex normals.
- *
- * Revision 1.3 1997/11/15 18:05:05 curt
- * minor tweaks ...
- *
- * Revision 1.2 1997/11/14 00:29:13 curt
- * Transform scenery coordinates at this point in pipeline when scenery is
- * being translated to .obj format, not when it is being loaded into the end
- * renderer. Precalculate normals for each node as average of the normals
- * of each containing polygon so Garoude shading is now supportable.
- *
- * Revision 1.1 1997/10/29 23:05:15 curt
- * Initial revision.
- *
- */
--- /dev/null
+/* tri2obj.c -- read in a .ele/.node file pair generated by the triangle
+ * program and output a simple Wavefront .obj file.
+ *
+ * Written by Curtis Olson, started October 1997.
+ *
+ * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h> /* for atoi() */
+#include <string.h>
+#include <sys/stat.h> /* for stat() */
+#include <unistd.h> /* for stat() */
+
+#include "tri2obj.hxx"
+
+#include <Include/fg_constants.h>
+#include <Include/fg_types.h>
+#include <Bucket/bucketutils.h>
+
+#include <Math/fg_geodesy.h>
+#include <Math/mat3.h>
+#include <Math/polar3d.hxx>
+
+
+int nodecount, tricount;
+int normalcount = 0;
+static fgPoint3d nodes[MAX_NODES];
+static int tris[MAX_TRIS][3];
+
+static double normals[MAX_NODES][3];
+
+fgBUCKET my_index;
+fgBUCKET ne_index, nw_index, sw_index, se_index;
+fgBUCKET north_index, south_index, east_index, west_index;
+
+/* convert a geodetic point lon(arcsec), lat(arcsec), elev(meter) to
+ * a cartesian point */
+fgPoint3d geod_to_cart(double geod[3]) {
+ fgPoint3d cp;
+ fgPoint3d pp;
+ double gc_lon, gc_lat, sl_radius;
+
+ /* printf("A geodetic point is (%.2f, %.2f, %.2f)\n",
+ geod[0], geod[1], geod[2]); */
+
+ gc_lon = geod[0]*ARCSEC_TO_RAD;
+ fgGeodToGeoc(geod[1]*ARCSEC_TO_RAD, geod[2], &sl_radius, &gc_lat);
+
+ /* printf("A geocentric point is (%.2f, %.2f, %.2f)\n", gc_lon,
+ gc_lat, sl_radius+geod[2]); */
+
+ pp.lon = gc_lon;
+ pp.lat = gc_lat;
+ pp.radius = sl_radius + geod[2];
+ cp = fgPolarToCart3d(pp);
+
+ /* printf("A cart point is (%.8f, %.8f, %.8f)\n", cp.x, cp.y, cp.z); */
+
+ return(cp);
+}
+
+
+/* given three points defining a triangle, calculate the normal */
+void calc_normal(fgPoint3d p1, fgPoint3d p2,
+ fgPoint3d p3, double normal[3])
+{
+ double v1[3], v2[3];
+ double temp;
+
+ v1[0] = p2.x - p1.x; v1[1] = p2.y - p1.y; v1[2] = p2.z - p1.z;
+ v2[0] = p3.x - p1.x; v2[1] = p3.y - p1.y; v2[2] = p3.z - p1.z;
+
+ MAT3cross_product(normal, v1, v2);
+ MAT3_NORMALIZE_VEC(normal, temp);
+
+/* printf(" Normal = %.2f %.2f %.2f\n", normal[0], normal[1], normal[2]); */
+}
+
+
+/* return the index of all triangles containing the specified node */
+void find_tris(int n, int *t1, int *t2, int *t3, int *t4, int *t5) {
+ int i;
+
+ *t1 = *t2 = *t3 = *t4 = *t5 = 0;
+
+ i = 1;
+ while ( i <= tricount ) {
+ if ( (n == tris[i][0]) || (n == tris[i][1]) || (n == tris[i][2]) ) {
+ if ( *t1 == 0 ) {
+ *t1 = i;
+ } else if ( *t2 == 0 ) {
+ *t2 = i;
+ } else if ( *t3 == 0 ) {
+ *t3 = i;
+ } else if ( *t4 == 0 ) {
+ *t4 = i;
+ } else {
+ *t5 = i;
+ }
+ }
+ i++;
+ }
+}
+
+
+/* return the file base name ( foo/bar/file.ext = file.ext ) */
+void extract_file(char *in, char *base) {
+ int len, i;
+
+ len = strlen(in);
+
+ i = len - 1;
+ while ( (i >= 0) && (in[i] != '/') ) {
+ i--;
+ }
+
+ in += (i + 1);
+ strcpy(base, in);
+}
+
+
+/* return the file path name ( foo/bar/file.ext = foo/bar ) */
+void extract_path(char *in, char *base) {
+ int len, i;
+
+ len = strlen(in);
+ strcpy(base, in);
+
+ i = len - 1;
+ while ( (i >= 0) && (in[i] != '/') ) {
+ i--;
+ }
+
+ base[i] = '\0';
+}
+
+
+/* check if a file exists */
+int file_exists(char *file) {
+ struct stat stat_buf;
+ int result;
+
+ printf("checking %s ... ", file);
+
+ result = stat(file, &stat_buf);
+
+ if ( result != 0 ) {
+ /* stat failed, no file */
+ printf("not found.\n");
+ return(0);
+ } else {
+ /* stat succeeded, file exists */
+ printf("exists.\n");
+ return(1);
+ }
+}
+
+
+/* check to see if a shared object exists */
+int shared_object_exists(char *basepath, char *ext, char *file) {
+ char scene_path[256];
+ long int index;
+
+ if ( strcmp(ext, ".sw") == 0 ) {
+ fgBucketGenBasePath(&my_index, scene_path);
+ index = fgBucketGenIndex(&my_index);
+ sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&west_index, scene_path);
+ index = fgBucketGenIndex(&west_index);
+ sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&sw_index, scene_path);
+ index = fgBucketGenIndex(&sw_index);
+ sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&south_index, scene_path);
+ index = fgBucketGenIndex(&south_index);
+ sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".se") == 0 ) {
+ fgBucketGenBasePath(&my_index, scene_path);
+ index = fgBucketGenIndex(&my_index);
+ sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&east_index, scene_path);
+ index = fgBucketGenIndex(&east_index);
+ sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&se_index, scene_path);
+ index = fgBucketGenIndex(&se_index);
+ sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&south_index, scene_path);
+ index = fgBucketGenIndex(&south_index);
+ sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".ne") == 0 ) {
+ fgBucketGenBasePath(&my_index, scene_path);
+ index = fgBucketGenIndex(&my_index);
+ sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&east_index, scene_path);
+ index = fgBucketGenIndex(&east_index);
+ sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&ne_index, scene_path);
+ index = fgBucketGenIndex(&ne_index);
+ sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&north_index, scene_path);
+ index = fgBucketGenIndex(&north_index);
+ sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".nw") == 0 ) {
+ fgBucketGenBasePath(&my_index, scene_path);
+ index = fgBucketGenIndex(&my_index);
+ sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&west_index, scene_path);
+ index = fgBucketGenIndex(&west_index);
+ sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&nw_index, scene_path);
+ index = fgBucketGenIndex(&nw_index);
+ sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&north_index, scene_path);
+ index = fgBucketGenIndex(&north_index);
+ sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".south") == 0 ) {
+ fgBucketGenBasePath(&my_index, scene_path);
+ index = fgBucketGenIndex(&my_index);
+ sprintf(file, "%s/%s/%ld.1.south", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&south_index, scene_path);
+ index = fgBucketGenIndex(&south_index);
+ sprintf(file, "%s/%s/%ld.1.north", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".north") == 0 ) {
+ fgBucketGenBasePath(&my_index, scene_path);
+ index = fgBucketGenIndex(&my_index);
+ sprintf(file, "%s/%s/%ld.1.north", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&north_index, scene_path);
+ index = fgBucketGenIndex(&north_index);
+ sprintf(file, "%s/%s/%ld.1.south", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".west") == 0 ) {
+ fgBucketGenBasePath(&my_index, scene_path);
+ index = fgBucketGenIndex(&my_index);
+ sprintf(file, "%s/%s/%ld.1.west", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&west_index, scene_path);
+ index = fgBucketGenIndex(&west_index);
+ sprintf(file, "%s/%s/%ld.1.east", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".east") == 0 ) {
+ fgBucketGenBasePath(&my_index, scene_path);
+ index = fgBucketGenIndex(&my_index);
+ sprintf(file, "%s/%s/%ld.1.east", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ fgBucketGenBasePath(&east_index, scene_path);
+ index = fgBucketGenIndex(&east_index);
+ sprintf(file, "%s/%s/%ld.1.west", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".body") == 0 ) {
+ fgBucketGenBasePath(&my_index, scene_path);
+ index = fgBucketGenIndex(&my_index);
+ sprintf(file, "%s/%s/%ld.1.body", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ return(0);
+}
+
+
+/* given a file pointer, read all the vn (normals from it) */
+void read_normals(FILE *fp) {
+ char line[256];
+
+ while ( fgets(line, 250, fp) != NULL ) {
+ if ( strncmp(line, "vn ", 3) == 0 ) {
+ sscanf( line, "vn %lf %lf %lf\n",
+ &normals[normalcount][0],
+ &normals[normalcount][1],
+ &normals[normalcount][2] );
+ /*
+ printf("read_normals(%d) %.2f %.2f %.2f %s", normalcount,
+ normals[normalcount][0], normals[normalcount][1],
+ normals[normalcount][2], line);
+ */
+ normalcount++;
+ }
+ }
+}
+
+
+/* my custom file opening routine ... don't open if a shared edge or
+ * vertex alread exists */
+FILE *my_open(char *basename, char *basepath, char *ext) {
+ FILE *fp;
+ char filename[256];
+
+ /* check if a shared object already exists */
+ if ( shared_object_exists(basepath, ext, filename) ) {
+ /* not an actual file open error, but we've already got the
+ * shared edge, so we don't want to create another one */
+ fp = fopen(filename, "r");
+ printf("Opening %s\n", filename);
+ return(fp);
+ } else {
+ /* open the file */
+ printf("not opening\n");
+ return(NULL);
+ }
+}
+
+
+/* Initialize a new mesh structure */
+void triload(char *basename, char *basepath) {
+ char nodename[256], elename[256];
+ double n[3];
+ FILE *ne, *nw, *se, *sw, *north, *south, *east, *west;
+ FILE *node, *ele;
+ int dim, junk1, junk2;
+ int i;
+
+ ne = my_open(basename, basepath, ".ne");
+ read_normals(ne);
+ fclose(ne);
+
+ nw = my_open(basename, basepath, ".nw");
+ read_normals(nw);
+ fclose(nw);
+
+ se = my_open(basename, basepath, ".se");
+ read_normals(se);
+ fclose(se);
+
+ sw = my_open(basename, basepath, ".sw");
+ read_normals(sw);
+ fclose(sw);
+
+ north = my_open(basename, basepath, ".north");
+ read_normals(north);
+ fclose(north);
+
+ south = my_open(basename, basepath, ".south");
+ read_normals(south);
+ fclose(south);
+
+ east = my_open(basename, basepath, ".east");
+ read_normals(east);
+ fclose(east);
+
+ west = my_open(basename, basepath, ".west");
+ read_normals(west);
+ fclose(west);
+
+ strcpy(nodename, basename);
+ strcat(nodename, ".node");
+ strcpy(elename, basename);
+ strcat(elename, ".ele");
+
+ printf("Loading node file: %s ...\n", nodename);
+ if ( (node = fopen(nodename, "r")) == NULL ) {
+ printf("Cannot open file '%s'\n", nodename);
+ exit(-1);
+ }
+
+ fscanf(node, "%d %d %d %d", &nodecount, &dim, &junk1, &junk2);
+
+ if ( nodecount > MAX_NODES - 1 ) {
+ printf("Error, too many nodes, need to increase array size\n");
+ exit(-1);
+ } else {
+ printf(" Expecting %d nodes\n", nodecount);
+ }
+
+ for ( i = 1; i <= nodecount; i++ ) {
+ fscanf(node, "%d %lf %lf %lf %d\n", &junk1,
+ &n[0], &n[1], &n[2], &junk2);
+ /* printf("%d %.2f %.2f %.2f\n", junk1, n[0], n[1], n[2]); */
+ nodes[i] = geod_to_cart(n);
+ /* printf("%d %.2f %.2f %.2f\n",
+ junk1, nodes[i].x, nodes[i].y, nodes[i].z); */
+ }
+
+ fclose(node);
+
+ printf("Loading element file: %s ...\n", elename);
+ if ( (ele = fopen(elename, "r")) == NULL ) {
+ printf("Cannot open file '%s'\n", elename);
+ exit(-1);
+ }
+
+ fscanf(ele, "%d %d %d", &tricount, &junk1, &junk2);
+
+ if ( tricount > MAX_TRIS - 1 ) {
+ printf("Error, too many elements, need to increase array size\n");
+ exit(-1);
+ } else {
+ printf(" Expecting %d elements\n", tricount);
+ }
+
+ for ( i = 1; i <= tricount; i++ ) {
+ fscanf(ele, "%d %d %d %d\n", &junk1,
+ &tris[i][0], &tris[i][1], &tris[i][2]);
+ /* printf("%d %d %d %d\n", junk1, tris[i][0], tris[i][1], tris[i][2]);*/
+ }
+
+ fclose(ele);
+}
+
+
+/* dump in WaveFront .obj format */
+void dump_obj(char *basename) {
+ char objname[256];
+ double n1[3], n2[3], n3[3], n4[3], n5[3], norm[3], temp;
+ FILE *obj;
+ int i, t1, t2, t3, t4, t5, count;
+
+ strcpy(objname, basename);
+ strcat(objname, ".obj");
+
+ printf("Dumping to file: %s ...\n", objname);
+
+ obj = fopen(objname, "w");
+
+ /* dump vertices */
+ printf(" writing vertices\n");
+ for ( i = 1; i <= nodecount; i++ ) {
+ fprintf(obj, "v %.6f %.6f %.6f\n",
+ nodes[i].x, nodes[i].y, nodes[i].z);
+ }
+
+ printf(" calculating and writing normals\n");
+ printf(" First %d normals taken from shared files.\n", normalcount);
+
+ /* calculate and generate normals */
+ for ( i = 1; i <= nodecount; i++ ) {
+
+ if ( i <= normalcount ) {
+ /* use precalculated (shared) normal */
+ norm[0] = normals[i-1][0];
+ norm[1] = normals[i-1][1];
+ norm[2] = normals[i-1][2];
+ } else {
+ /* printf("Finding normal\n"); */
+
+ find_tris(i, &t1, &t2, &t3, &t4, &t5);
+
+ n1[0] = n1[1] = n1[2] = 0.0;
+ n2[0] = n2[1] = n2[2] = 0.0;
+ n3[0] = n3[1] = n3[2] = 0.0;
+ n4[0] = n4[1] = n4[2] = 0.0;
+ n5[0] = n5[1] = n5[2] = 0.0;
+
+ count = 1;
+ calc_normal(nodes[tris[t1][0]], nodes[tris[t1][1]],
+ nodes[tris[t1][2]], n1);
+
+ if ( t2 > 0 ) {
+ calc_normal(nodes[tris[t2][0]], nodes[tris[t2][1]],
+ nodes[tris[t2][2]], n2);
+ count = 2;
+ }
+
+ if ( t3 > 0 ) {
+ calc_normal(nodes[tris[t3][0]], nodes[tris[t3][1]],
+ nodes[tris[t3][2]], n3);
+ count = 3;
+ }
+
+ if ( t4 > 0 ) {
+ calc_normal(nodes[tris[t4][0]], nodes[tris[t4][1]],
+ nodes[tris[t4][2]], n4);
+ count = 4;
+ }
+
+ if ( t5 > 0 ) {
+ calc_normal(nodes[tris[t5][0]], nodes[tris[t5][1]],
+ nodes[tris[t5][2]], n5);
+ count = 5;
+ }
+
+ /* printf(" norm[2] = %.2f %.2f %.2f\n", n1[2], n2[2], n3[2]); */
+
+ norm[0] = ( n1[0] + n2[0] + n3[0] + n4[0] + n5[0] ) / (double)count;
+ norm[1] = ( n1[1] + n2[1] + n3[1] + n4[1] + n5[1] ) / (double)count;
+ norm[2] = ( n1[2] + n2[2] + n3[2] + n4[2] + n5[2] ) / (double)count;
+
+ /* printf(" count = %d\n", count); */
+ /* printf(" Ave. normal = %.4f %.4f %.4f\n",
+ norm[0], norm[1], norm[2]);*/
+ MAT3_NORMALIZE_VEC(norm, temp);
+ /* printf(" Normalized ave. normal = %.4f %.4f %.4f\n", */
+ /* norm[0], norm[1], norm[2]); */
+ }
+ /* printf("%d vn %.4f %.4f %.4f\n", i, norm[0], norm[1], norm[2]); */
+ fprintf(obj, "vn %.4f %.4f %.4f\n", norm[0], norm[1], norm[2]);
+ }
+
+ /* dump faces */
+ printf(" writing faces\n");
+ for ( i = 1; i <= tricount; i++ ) {
+ fprintf(obj, "f %d %d %d\n", tris[i][0], tris[i][1], tris[i][2]);
+ }
+
+ fclose(obj);
+}
+
+int main(int argc, char **argv) {
+ char basename[256], basepath[256], temp[256];
+ long int tmp_index;
+ int len;
+
+ strcpy(basename, argv[1]);
+
+ /* find the base path of the file */
+ extract_path(basename, basepath);
+ extract_path(basepath, basepath);
+ extract_path(basepath, basepath);
+ printf("%s\n", basepath);
+
+ /* find the index of the current file */
+ extract_file(basename, temp);
+ len = strlen(temp);
+ if ( len >= 2 ) {
+ temp[len-2] = '\0';
+ }
+ tmp_index = atoi(temp);
+ printf("%ld\n", tmp_index);
+ fgBucketParseIndex(tmp_index, &my_index);
+
+ printf("bucket = %d %d %d %d\n",
+ my_index.lon, my_index.lat, my_index.x, my_index.y);
+ /* generate the indexes of the neighbors */
+ fgBucketOffset(&my_index, &ne_index, 1, 1);
+ fgBucketOffset(&my_index, &nw_index, -1, 1);
+ fgBucketOffset(&my_index, &se_index, 1, -1);
+ fgBucketOffset(&my_index, &sw_index, -1, -1);
+
+ fgBucketOffset(&my_index, &north_index, 0, 1);
+ fgBucketOffset(&my_index, &south_index, 0, -1);
+ fgBucketOffset(&my_index, &east_index, 1, 0);
+ fgBucketOffset(&my_index, &west_index, -1, 0);
+
+ /* load the input data files */
+ triload(basename, basepath);
+
+ /* dump in WaveFront .obj format */
+ dump_obj(basename);
+
+ return(0);
+}
+
+
+/* $Log$
+/* Revision 1.1 1998/07/08 14:54:53 curt
+/* renamed *.[ch] to *.[ch]xx
+/*
+ * Revision 1.17 1998/07/04 00:56:40 curt
+ * typedef'd struct fgBUCKET.
+ *
+ * Revision 1.16 1998/05/23 15:20:41 curt
+ * Output more digits after the decimal place.
+ *
+ * Revision 1.15 1998/05/02 01:54:39 curt
+ * Converting to polar3d.h routines.
+ *
+ * Revision 1.14 1998/04/18 04:01:32 curt
+ * Now use libMath rather than having local copies of math routines.
+ *
+ * Revision 1.13 1998/04/14 02:26:11 curt
+ * Code reorganizations. Added a Lib/ directory for more general libraries.
+ *
+ * Revision 1.12 1998/04/08 23:22:18 curt
+ * Adopted Gnu automake/autoconf system.
+ *
+ * Revision 1.11 1998/03/03 16:01:00 curt
+ * More c++ compile tweaks.
+ *
+ * Revision 1.10 1998/01/31 00:41:27 curt
+ * Made a few changes converting floats to doubles.
+ *
+ * Revision 1.9 1998/01/27 18:37:04 curt
+ * Lots of updates to get back in sync with changes made over in .../Src/
+ *
+ * Revision 1.8 1998/01/17 01:25:39 curt
+ * Added support for shared normals.
+ *
+ * Revision 1.7 1998/01/12 02:42:00 curt
+ * Average up to five triangles per vertex instead of three.
+ *
+ * Revision 1.6 1998/01/09 23:03:15 curt
+ * Restructured to split 1deg x 1deg dem's into 64 subsections.
+ *
+ * Revision 1.5 1997/12/08 19:17:50 curt
+ * Fixed a type in the normal generation code.
+ *
+ * Revision 1.4 1997/12/02 13:13:32 curt
+ * Fixed problem with averaged vertex normals.
+ *
+ * Revision 1.3 1997/11/15 18:05:05 curt
+ * minor tweaks ...
+ *
+ * Revision 1.2 1997/11/14 00:29:13 curt
+ * Transform scenery coordinates at this point in pipeline when scenery is
+ * being translated to .obj format, not when it is being loaded into the end
+ * renderer. Precalculate normals for each node as average of the normals
+ * of each containing polygon so Garoude shading is now supportable.
+ *
+ * Revision 1.1 1997/10/29 23:05:15 curt
+ * Initial revision.
+ *
+ */
+++ /dev/null
-/* tri2obj.h -- read in a .ele/.node file pair generated by the triangle
- * program and output a Wavefront .obj file.
- *
- * Written by Curtis Olson, started October 1997.
- *
- * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
- * (Log is kept at end of this file)
- */
-
-
-#ifndef TRI2OBJ_H
-#define TRI2OBJ_H
-
-
-#include <stdio.h>
-#include <string.h>
-
-
-#define MAX_NODES 200000
-#define MAX_TRIS 400000
-
-
-/* Initialize a new mesh structure */
-void triload(char *basename, char *basepath);
-
-
-#endif /* TRI2OBJ_H */
-
-
-/* $Log$
-/* Revision 1.5 1998/03/03 16:01:00 curt
-/* More c++ compile tweaks.
-/*
- * Revision 1.4 1998/01/17 01:25:40 curt
- * Added support for shared normals.
- *
- * Revision 1.3 1997/11/15 18:05:06 curt
- * minor tweaks ...
- *
- * Revision 1.2 1997/11/14 00:29:13 curt
- * Transform scenery coordinates at this point in pipeline when scenery is
- * being translated to .obj format, not when it is being loaded into the end
- * renderer. Precalculate normals for each node as average of the normals
- * of each containing polygon so Garoude shading is now supportable.
- *
- * Revision 1.1 1997/10/29 23:05:15 curt
- * Initial revision.
- *
- */
--- /dev/null
+/* tri2obj.h -- read in a .ele/.node file pair generated by the triangle
+ * program and output a Wavefront .obj file.
+ *
+ * Written by Curtis Olson, started October 1997.
+ *
+ * Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ */
+
+
+#ifndef TRI2OBJ_H
+#define TRI2OBJ_H
+
+
+#include <stdio.h>
+#include <string.h>
+
+
+#define MAX_NODES 200000
+#define MAX_TRIS 400000
+
+
+/* Initialize a new mesh structure */
+void triload(char *basename, char *basepath);
+
+
+#endif /* TRI2OBJ_H */
+
+
+/* $Log$
+/* Revision 1.1 1998/07/08 14:54:54 curt
+/* renamed *.[ch] to *.[ch]xx
+/*
+ * Revision 1.5 1998/03/03 16:01:00 curt
+ * More c++ compile tweaks.
+ *
+ * Revision 1.4 1998/01/17 01:25:40 curt
+ * Added support for shared normals.
+ *
+ * Revision 1.3 1997/11/15 18:05:06 curt
+ * minor tweaks ...
+ *
+ * Revision 1.2 1997/11/14 00:29:13 curt
+ * Transform scenery coordinates at this point in pipeline when scenery is
+ * being translated to .obj format, not when it is being loaded into the end
+ * renderer. Precalculate normals for each node as average of the normals
+ * of each containing polygon so Garoude shading is now supportable.
+ *
+ * Revision 1.1 1997/10/29 23:05:15 curt
+ * Initial revision.
+ *
+ */
projects / flightgear.git / commitdiff