-/* 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)
- */
+// tri2obj.cxx -- 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 <stdlib.h> // for atoi()
#include <string.h>
-#include <sys/stat.h> /* for stat() */
-#include <unistd.h> /* for stat() */
+#include <sys/stat.h> // for stat()
+#include <unistd.h> // for stat()
#include "tri2obj.hxx"
fgBUCKET north_index, south_index, east_index, west_index;
-/* given three points defining a triangle, calculate the normal */
+// given three points defining a triangle, calculate the normal
void calc_normal(Point3D p1, Point3D p2,
Point3D p3, double normal[3])
{
MAT3cross_product(normal, v1, v2);
MAT3_NORMALIZE_VEC(normal, temp);
-/* printf(" Normal = %.2f %.2f %.2f\n", normal[0], normal[1], normal[2]); */
+// printf(" Normal = %.2f %.2f %.2f\n", normal[0], normal[1], normal[2]);
}
-/* return the index of all triangles containing the specified node */
+// 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;
}
-/* return the file base name ( foo/bar/file.ext = file.ext ) */
+// return the file base name ( foo/bar/file.ext = file.ext )
void extract_file(char *in, char *base) {
int len, i;
}
-/* return the file path name ( foo/bar/file.ext = foo/bar ) */
+// return the file path name ( foo/bar/file.ext = foo/bar )
void extract_path(char *in, char *base) {
int len, i;
}
-/* check if a file exists */
+// check if a file exists
int file_exists(char *file) {
struct stat stat_buf;
int result;
result = stat(file, &stat_buf);
if ( result != 0 ) {
- /* stat failed, no file */
+ // stat failed, no file
printf("not found.\n");
return(0);
} else {
- /* stat succeeded, file exists */
+ // stat succeeded, file exists
printf("exists.\n");
return(1);
}
}
-/* check to see if a shared object exists */
+// 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;
}
-/* given a file pointer, read all the vn (normals from it) */
+// given a file pointer, read all the vn (normals from it)
void read_normals(FILE *fp) {
char line[256];
}
-/* my custom file opening routine ... don't open if a shared edge or
- * vertex alread exists */
+// 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 */
+ // 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 */
+ // 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 */
+ // open the file
printf("not opening\n");
return(NULL);
}
}
-/* Initialize a new mesh structure */
+// Initialize a new mesh structure
void triload(char *basename, char *basepath) {
char nodename[256], elename[256];
double n[3];
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]); */
+ // printf("%d %.2f %.2f %.2f\n", junk1, n[0], n[1], n[2]);
p = Point3D(n[0], n[1], n[2]);
nodes[i] = fgGeodToCart(p);
- /* printf("%d %.2f %.2f %.2f\n",
- junk1, nodes[i].x, nodes[i].y, nodes[i].z); */
+ // printf("%d %.2f %.2f %.2f\n",
+ // junk1, nodes[i].x, nodes[i].y, nodes[i].z);
}
fclose(node);
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]);*/
+ // printf("%d %d %d %d\n", junk1, tris[i][0], tris[i][1], tris[i][2]);*/
}
fclose(ele);
}
-/* dump in WaveFront .obj format */
+// 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;
obj = fopen(objname, "w");
- /* dump vertices */
+ // dump vertices
printf(" writing vertices\n");
for ( i = 1; i <= nodecount; i++ ) {
x = nodes[i].x();
printf(" calculating and writing normals\n");
printf(" First %d normals taken from shared files.\n", normalcount);
- /* calculate and generate normals */
+ // calculate and generate normals
for ( i = 1; i <= nodecount; i++ ) {
if ( i <= normalcount ) {
- /* use precalculated (shared) normal */
+ // 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"); */
+ // printf("Finding normal\n");
find_tris(i, &t1, &t2, &t3, &t4, &t5);
count = 5;
}
- /* printf(" norm[2] = %.2f %.2f %.2f\n", n1[2], n2[2], n3[2]); */
+ // 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]);*/
+ // 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(" 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]); */
+ // 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 */
+ // 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]);
strcpy(basename, argv[1]);
- /* find the base path of the file */
+ // 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 */
+ // find the index of the current file
extract_file(basename, temp);
len = strlen(temp);
if ( len >= 2 ) {
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 */
+ // 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, &east_index, 1, 0);
fgBucketOffset(&my_index, &west_index, -1, 0);
- /* load the input data files */
+ // load the input data files
triload(basename, basepath);
- /* dump in WaveFront .obj format */
+ // dump in WaveFront .obj format
dump_obj(basename);
return(0);
}
-/* $Log$
-/* Revision 1.2 1998/10/18 01:17:29 curt
-/* Point3D tweaks.
-/*
- * 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.
- *
- */
+// $Log$
+// Revision 1.3 1998/10/19 19:33:31 curt
+// C++-ification.
+//
+// Revision 1.2 1998/10/18 01:17:29 curt
+// Point3D tweaks.
+//
+// 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.
+//
+
projects / flightgear.git / commitdiff