From 5321d533d689bc26da0fb176e7931b973080aedd Mon Sep 17 00:00:00 2001 From: curt Date: Mon, 19 Oct 1998 19:33:31 +0000 Subject: [PATCH] C++-ification. --- Tri2obj/tri2obj.cxx | 258 ++++++++++++++++++++++---------------------- 1 file changed, 130 insertions(+), 128 deletions(-) diff --git a/Tri2obj/tri2obj.cxx b/Tri2obj/tri2obj.cxx index dfc374a00..20ecb0b2b 100644 --- a/Tri2obj/tri2obj.cxx +++ b/Tri2obj/tri2obj.cxx @@ -1,34 +1,33 @@ -/* 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 -#include /* for atoi() */ +#include // for atoi() #include -#include /* for stat() */ -#include /* for stat() */ +#include // for stat() +#include // for stat() #include "tri2obj.hxx" @@ -53,7 +52,7 @@ fgBUCKET ne_index, nw_index, sw_index, se_index; 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]) { @@ -66,11 +65,11 @@ void calc_normal(Point3D p1, Point3D p2, 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; @@ -96,7 +95,7 @@ void find_tris(int n, int *t1, int *t2, int *t3, int *t4, int *t5) { } -/* 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; @@ -112,7 +111,7 @@ void extract_file(char *in, char *base) { } -/* 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; @@ -128,7 +127,7 @@ void extract_path(char *in, char *base) { } -/* check if a file exists */ +// check if a file exists int file_exists(char *file) { struct stat stat_buf; int result; @@ -138,18 +137,18 @@ int file_exists(char *file) { 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; @@ -335,7 +334,7 @@ int shared_object_exists(char *basepath, char *ext, char *file) { } -/* 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]; @@ -356,28 +355,28 @@ void read_normals(FILE *fp) { } -/* 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]; @@ -442,11 +441,11 @@ void triload(char *basename, char *basepath) { 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); @@ -469,14 +468,14 @@ void triload(char *basename, char *basepath) { 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; @@ -491,7 +490,7 @@ void dump_obj(char *basename) { obj = fopen(objname, "w"); - /* dump vertices */ + // dump vertices printf(" writing vertices\n"); for ( i = 1; i <= nodecount; i++ ) { x = nodes[i].x(); @@ -503,16 +502,16 @@ void dump_obj(char *basename) { 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); @@ -550,24 +549,24 @@ void dump_obj(char *basename) { 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]); @@ -583,13 +582,13 @@ int main(int argc, char **argv) { 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 ) { @@ -601,7 +600,7 @@ int main(int argc, char **argv) { 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); @@ -612,75 +611,78 @@ int main(int argc, char **argv) { 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. +// +