C++-ification.
This commit is contained in:
curt
parent
b0d67bf6b9
commit
5321d533d6
1 changed files with 130 additions and 128 deletions
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@ -1,34 +1,33 @@
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/* 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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// tri2obj.cxx -- 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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#include <stdio.h>
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#include <stdlib.h> /* for atoi() */
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#include <stdlib.h> // for atoi()
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#include <string.h>
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#include <sys/stat.h> /* for stat() */
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#include <unistd.h> /* for stat() */
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#include <sys/stat.h> // for stat()
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#include <unistd.h> // for stat()
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#include "tri2obj.hxx"
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@ -53,7 +52,7 @@ fgBUCKET ne_index, nw_index, sw_index, se_index;
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fgBUCKET north_index, south_index, east_index, west_index;
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/* given three points defining a triangle, calculate the normal */
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// given three points defining a triangle, calculate the normal
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void calc_normal(Point3D p1, Point3D p2,
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Point3D p3, double normal[3])
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{
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@ -66,11 +65,11 @@ void calc_normal(Point3D p1, Point3D p2,
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MAT3cross_product(normal, v1, v2);
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MAT3_NORMALIZE_VEC(normal, temp);
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/* printf(" Normal = %.2f %.2f %.2f\n", normal[0], normal[1], normal[2]); */
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// printf(" Normal = %.2f %.2f %.2f\n", normal[0], normal[1], normal[2]);
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}
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/* return the index of all triangles containing the specified node */
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// return the index of all triangles containing the specified node
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void find_tris(int n, int *t1, int *t2, int *t3, int *t4, int *t5) {
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int i;
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@ -96,7 +95,7 @@ void find_tris(int n, int *t1, int *t2, int *t3, int *t4, int *t5) {
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}
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/* return the file base name ( foo/bar/file.ext = file.ext ) */
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// return the file base name ( foo/bar/file.ext = file.ext )
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void extract_file(char *in, char *base) {
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int len, i;
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@ -112,7 +111,7 @@ void extract_file(char *in, char *base) {
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}
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/* return the file path name ( foo/bar/file.ext = foo/bar ) */
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// return the file path name ( foo/bar/file.ext = foo/bar )
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void extract_path(char *in, char *base) {
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int len, i;
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@ -128,7 +127,7 @@ void extract_path(char *in, char *base) {
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}
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/* check if a file exists */
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// check if a file exists
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int file_exists(char *file) {
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struct stat stat_buf;
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int result;
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@ -138,18 +137,18 @@ int file_exists(char *file) {
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result = stat(file, &stat_buf);
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if ( result != 0 ) {
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/* stat failed, no file */
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// stat failed, no file
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printf("not found.\n");
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return(0);
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} else {
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/* stat succeeded, file exists */
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// stat succeeded, file exists
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printf("exists.\n");
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return(1);
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}
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}
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/* check to see if a shared object exists */
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// check to see if a shared object exists
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int shared_object_exists(char *basepath, char *ext, char *file) {
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char scene_path[256];
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long int index;
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@ -335,7 +334,7 @@ int shared_object_exists(char *basepath, char *ext, char *file) {
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}
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/* given a file pointer, read all the vn (normals from it) */
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// given a file pointer, read all the vn (normals from it)
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void read_normals(FILE *fp) {
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char line[256];
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@ -356,28 +355,28 @@ void read_normals(FILE *fp) {
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}
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/* my custom file opening routine ... don't open if a shared edge or
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* vertex alread exists */
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// my custom file opening routine ... don't open if a shared edge or
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// vertex alread exists
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FILE *my_open(char *basename, char *basepath, char *ext) {
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FILE *fp;
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char filename[256];
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/* check if a shared object already exists */
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// check if a shared object already exists
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if ( shared_object_exists(basepath, ext, filename) ) {
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/* not an actual file open error, but we've already got the
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* shared edge, so we don't want to create another one */
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// not an actual file open error, but we've already got the
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// shared edge, so we don't want to create another one
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fp = fopen(filename, "r");
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printf("Opening %s\n", filename);
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return(fp);
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} else {
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/* open the file */
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// open the file
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printf("not opening\n");
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return(NULL);
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}
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}
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/* Initialize a new mesh structure */
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// Initialize a new mesh structure
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void triload(char *basename, char *basepath) {
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char nodename[256], elename[256];
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double n[3];
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@ -442,11 +441,11 @@ void triload(char *basename, char *basepath) {
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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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&n[0], &n[1], &n[2], &junk2);
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/* printf("%d %.2f %.2f %.2f\n", junk1, n[0], n[1], n[2]); */
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// printf("%d %.2f %.2f %.2f\n", junk1, n[0], n[1], n[2]);
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p = Point3D(n[0], n[1], n[2]);
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nodes[i] = fgGeodToCart(p);
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/* printf("%d %.2f %.2f %.2f\n",
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junk1, nodes[i].x, nodes[i].y, nodes[i].z); */
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// printf("%d %.2f %.2f %.2f\n",
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// junk1, nodes[i].x, nodes[i].y, nodes[i].z);
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}
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fclose(node);
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@ -469,14 +468,14 @@ void triload(char *basename, char *basepath) {
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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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// 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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// 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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double n1[3], n2[3], n3[3], n4[3], n5[3], norm[3], temp;
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@ -491,7 +490,7 @@ void dump_obj(char *basename) {
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obj = fopen(objname, "w");
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/* dump vertices */
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// dump vertices
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printf(" writing vertices\n");
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for ( i = 1; i <= nodecount; i++ ) {
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x = nodes[i].x();
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@ -503,16 +502,16 @@ void dump_obj(char *basename) {
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printf(" calculating and writing normals\n");
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printf(" First %d normals taken from shared files.\n", normalcount);
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/* calculate and generate normals */
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// calculate and generate normals
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for ( i = 1; i <= nodecount; i++ ) {
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if ( i <= normalcount ) {
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/* use precalculated (shared) normal */
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// use precalculated (shared) normal
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norm[0] = normals[i-1][0];
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norm[1] = normals[i-1][1];
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norm[2] = normals[i-1][2];
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} else {
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/* printf("Finding normal\n"); */
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// printf("Finding normal\n");
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find_tris(i, &t1, &t2, &t3, &t4, &t5);
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@ -550,24 +549,24 @@ void dump_obj(char *basename) {
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count = 5;
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}
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/* printf(" norm[2] = %.2f %.2f %.2f\n", n1[2], n2[2], n3[2]); */
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// printf(" norm[2] = %.2f %.2f %.2f\n", n1[2], n2[2], n3[2]);
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norm[0] = ( n1[0] + n2[0] + n3[0] + n4[0] + n5[0] ) / (double)count;
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norm[1] = ( n1[1] + n2[1] + n3[1] + n4[1] + n5[1] ) / (double)count;
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norm[2] = ( n1[2] + n2[2] + n3[2] + n4[2] + n5[2] ) / (double)count;
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/* printf(" count = %d\n", count); */
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/* printf(" Ave. normal = %.4f %.4f %.4f\n",
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norm[0], norm[1], norm[2]);*/
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// printf(" count = %d\n", count);
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// printf(" Ave. normal = %.4f %.4f %.4f\n",
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// norm[0], norm[1], norm[2]);*/
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MAT3_NORMALIZE_VEC(norm, temp);
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/* printf(" Normalized ave. normal = %.4f %.4f %.4f\n", */
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/* norm[0], norm[1], norm[2]); */
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// printf(" Normalized ave. normal = %.4f %.4f %.4f\n",
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// norm[0], norm[1], norm[2]);
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}
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/* printf("%d vn %.4f %.4f %.4f\n", i, norm[0], norm[1], norm[2]); */
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// printf("%d vn %.4f %.4f %.4f\n", i, norm[0], norm[1], norm[2]);
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fprintf(obj, "vn %.4f %.4f %.4f\n", norm[0], norm[1], norm[2]);
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}
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/* dump faces */
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// dump faces
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printf(" writing faces\n");
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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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@ -583,13 +582,13 @@ int main(int argc, char **argv) {
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strcpy(basename, argv[1]);
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/* find the base path of the file */
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// find the base path of the file
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extract_path(basename, basepath);
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extract_path(basepath, basepath);
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extract_path(basepath, basepath);
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printf("%s\n", basepath);
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/* find the index of the current file */
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// find the index of the current file
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extract_file(basename, temp);
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len = strlen(temp);
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if ( len >= 2 ) {
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@ -601,7 +600,7 @@ int main(int argc, char **argv) {
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printf("bucket = %d %d %d %d\n",
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my_index.lon, my_index.lat, my_index.x, my_index.y);
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/* generate the indexes of the neighbors */
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// generate the indexes of the neighbors
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fgBucketOffset(&my_index, &ne_index, 1, 1);
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fgBucketOffset(&my_index, &nw_index, -1, 1);
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fgBucketOffset(&my_index, &se_index, 1, -1);
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@ -612,75 +611,78 @@ int main(int argc, char **argv) {
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fgBucketOffset(&my_index, &east_index, 1, 0);
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fgBucketOffset(&my_index, &west_index, -1, 0);
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/* load the input data files */
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// load the input data files
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triload(basename, basepath);
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/* dump in WaveFront .obj format */
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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 1.2 1998/10/18 01:17:29 curt
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/* Point3D tweaks.
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/*
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* Revision 1.1 1998/07/08 14:54:53 curt
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* renamed *.[ch] to *.[ch]xx
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*
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* Revision 1.17 1998/07/04 00:56:40 curt
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* typedef'd struct fgBUCKET.
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*
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* Revision 1.16 1998/05/23 15:20:41 curt
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* Output more digits after the decimal place.
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*
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* Revision 1.15 1998/05/02 01:54:39 curt
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* Converting to polar3d.h routines.
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*
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* Revision 1.14 1998/04/18 04:01:32 curt
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* Now use libMath rather than having local copies of math routines.
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*
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* Revision 1.13 1998/04/14 02:26:11 curt
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* Code reorganizations. Added a Lib/ directory for more general libraries.
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*
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* Revision 1.12 1998/04/08 23:22:18 curt
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* Adopted Gnu automake/autoconf system.
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*
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* Revision 1.11 1998/03/03 16:01:00 curt
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* More c++ compile tweaks.
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*
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* Revision 1.10 1998/01/31 00:41:27 curt
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* Made a few changes converting floats to doubles.
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*
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* Revision 1.9 1998/01/27 18:37:04 curt
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* Lots of updates to get back in sync with changes made over in .../Src/
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*
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* Revision 1.8 1998/01/17 01:25:39 curt
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* Added support for shared normals.
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*
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* Revision 1.7 1998/01/12 02:42:00 curt
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* Average up to five triangles per vertex instead of three.
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*
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* Revision 1.6 1998/01/09 23:03:15 curt
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* Restructured to split 1deg x 1deg dem's into 64 subsections.
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*
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* Revision 1.5 1997/12/08 19:17:50 curt
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* Fixed a type in the normal generation code.
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*
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* Revision 1.4 1997/12/02 13:13:32 curt
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* Fixed problem with averaged vertex normals.
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*
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* Revision 1.3 1997/11/15 18:05:05 curt
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* minor tweaks ...
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*
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* Revision 1.2 1997/11/14 00:29:13 curt
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* Transform scenery coordinates at this point in pipeline when scenery is
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* being translated to .obj format, not when it is being loaded into the end
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* renderer. Precalculate normals for each node as average of the normals
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* of each containing polygon so Garoude shading is now supportable.
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*
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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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// $Log$
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// Revision 1.3 1998/10/19 19:33:31 curt
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// C++-ification.
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//
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// Revision 1.2 1998/10/18 01:17:29 curt
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// Point3D tweaks.
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//
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// Revision 1.1 1998/07/08 14:54:53 curt
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// renamed *.[ch] to *.[ch]xx
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//
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// Revision 1.17 1998/07/04 00:56:40 curt
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// typedef'd struct fgBUCKET.
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//
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// Revision 1.16 1998/05/23 15:20:41 curt
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// Output more digits after the decimal place.
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//
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// Revision 1.15 1998/05/02 01:54:39 curt
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// Converting to polar3d.h routines.
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//
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// Revision 1.14 1998/04/18 04:01:32 curt
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// Now use libMath rather than having local copies of math routines.
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//
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// Revision 1.13 1998/04/14 02:26:11 curt
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// Code reorganizations. Added a Lib/ directory for more general libraries.
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//
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// Revision 1.12 1998/04/08 23:22:18 curt
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// Adopted Gnu automake/autoconf system.
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//
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// Revision 1.11 1998/03/03 16:01:00 curt
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// More c++ compile tweaks.
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//
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// Revision 1.10 1998/01/31 00:41:27 curt
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// Made a few changes converting floats to doubles.
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//
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// Revision 1.9 1998/01/27 18:37:04 curt
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// Lots of updates to get back in sync with changes made over in .../Src/
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//
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// Revision 1.8 1998/01/17 01:25:39 curt
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// Added support for shared normals.
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//
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// Revision 1.7 1998/01/12 02:42:00 curt
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// Average up to five triangles per vertex instead of three.
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//
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// Revision 1.6 1998/01/09 23:03:15 curt
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// Restructured to split 1deg x 1deg dem's into 64 subsections.
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//
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// Revision 1.5 1997/12/08 19:17:50 curt
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||||
// 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.
|
||||
//
|
||||
|
||||
|
|
|
|||
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Reference in a new issue