--- /dev/null
+/* splittris.c -- reassemble the pieces produced by splittris
+ *
+ * Written by Curtis Olson, started January 1998.
+ *
+ * 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 <math.h>
+#include <stdio.h>
+#include <stdlib.h> /* for atoi() */
+#include <string.h>
+#include <sys/stat.h> /* for stat() */
+#include <unistd.h> /* for stat() */
+
+#include "assemtris.h"
+
+#include "../../Src/Include/constants.h"
+#include "../../Src/Include/types.h"
+#include "../../Src/Math/fg_geodesy.h"
+#include "../../Src/Math/mat3.h"
+#include "../../Src/Math/polar.h"
+#include "../../Src/Scenery/tileutils.h"
+
+
+int nodecount = 0;
+
+float nodes[MAX_NODES][3];
+
+
+struct bucket my_index;
+struct bucket ne_index, nw_index, sw_index, se_index;
+struct bucket north_index, south_index, east_index, west_index;
+
+
+/* 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 ) {
+ gen_base_path(&my_index, scene_path);
+ index = gen_index(&my_index);
+ sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&west_index, scene_path);
+ index = gen_index(&west_index);
+ sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&sw_index, scene_path);
+ index = gen_index(&sw_index);
+ sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&south_index, scene_path);
+ index = gen_index(&south_index);
+ sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".se") == 0 ) {
+ gen_base_path(&my_index, scene_path);
+ index = gen_index(&my_index);
+ sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&east_index, scene_path);
+ index = gen_index(&east_index);
+ sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&se_index, scene_path);
+ index = gen_index(&se_index);
+ sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&south_index, scene_path);
+ index = gen_index(&south_index);
+ sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".ne") == 0 ) {
+ gen_base_path(&my_index, scene_path);
+ index = gen_index(&my_index);
+ sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&east_index, scene_path);
+ index = gen_index(&east_index);
+ sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&ne_index, scene_path);
+ index = gen_index(&ne_index);
+ sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&north_index, scene_path);
+ index = gen_index(&north_index);
+ sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".nw") == 0 ) {
+ gen_base_path(&my_index, scene_path);
+ index = gen_index(&my_index);
+ sprintf(file, "%s/%s/%ld.1.nw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&west_index, scene_path);
+ index = gen_index(&west_index);
+ sprintf(file, "%s/%s/%ld.1.ne", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&nw_index, scene_path);
+ index = gen_index(&nw_index);
+ sprintf(file, "%s/%s/%ld.1.se", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&north_index, scene_path);
+ index = gen_index(&north_index);
+ sprintf(file, "%s/%s/%ld.1.sw", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".south") == 0 ) {
+ gen_base_path(&my_index, scene_path);
+ index = gen_index(&my_index);
+ sprintf(file, "%s/%s/%ld.1.south", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&south_index, scene_path);
+ index = gen_index(&south_index);
+ sprintf(file, "%s/%s/%ld.1.north", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".north") == 0 ) {
+ gen_base_path(&my_index, scene_path);
+ index = gen_index(&my_index);
+ sprintf(file, "%s/%s/%ld.1.north", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&north_index, scene_path);
+ index = gen_index(&north_index);
+ sprintf(file, "%s/%s/%ld.1.south", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".west") == 0 ) {
+ gen_base_path(&my_index, scene_path);
+ index = gen_index(&my_index);
+ sprintf(file, "%s/%s/%ld.1.west", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&west_index, scene_path);
+ index = gen_index(&west_index);
+ sprintf(file, "%s/%s/%ld.1.east", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".east") == 0 ) {
+ gen_base_path(&my_index, scene_path);
+ index = gen_index(&my_index);
+ sprintf(file, "%s/%s/%ld.1.east", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ gen_base_path(&east_index, scene_path);
+ index = gen_index(&east_index);
+ sprintf(file, "%s/%s/%ld.1.west", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ if ( strcmp(ext, ".body") == 0 ) {
+ gen_base_path(&my_index, scene_path);
+ index = gen_index(&my_index);
+ sprintf(file, "%s/%s/%ld.1.body", basepath, scene_path, index);
+ if ( file_exists(file) ) {
+ return(1);
+ }
+ }
+
+ return(0);
+}
+
+
+/* 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);
+ }
+}
+
+
+/* given a file pointer, read all the gdn (geodetic nodes from it) */
+void read_nodes(FILE *fp) {
+ char line[256];
+
+ while ( fgets(line, 250, fp) != NULL ) {
+ if ( strncmp(line, "gdn ", 4) == 0 ) {
+ sscanf(line, "gdn %f %f %f\n", &nodes[nodecount][0],
+ &nodes[nodecount][1], &nodes[nodecount][2]);
+ /*
+ printf("read_nodes(%d) %.2f %.2f %.2f %s", nodecount,
+ nodes[nodecount][0], nodes[nodecount][1],
+ nodes[nodecount][2], line);
+ */
+ nodecount++;
+ }
+ }
+}
+
+
+/* load in nodes from the various split and shared pieces to
+ * reconstruct a tile */
+void build_node_list(char *basename, char *basepath) {
+ FILE *ne, *nw, *se, *sw, *north, *south, *east, *west, *body;
+
+ ne = my_open(basename, basepath, ".ne");
+ read_nodes(ne);
+ fclose(ne);
+
+ nw = my_open(basename, basepath, ".nw");
+ read_nodes(nw);
+ fclose(nw);
+
+ se = my_open(basename, basepath, ".se");
+ read_nodes(se);
+ fclose(se);
+
+ sw = my_open(basename, basepath, ".sw");
+ read_nodes(sw);
+ fclose(sw);
+
+ north = my_open(basename, basepath, ".north");
+ read_nodes(north);
+ fclose(north);
+
+ south = my_open(basename, basepath, ".south");
+ read_nodes(south);
+ fclose(south);
+
+ east = my_open(basename, basepath, ".east");
+ read_nodes(east);
+ fclose(east);
+
+ west = my_open(basename, basepath, ".west");
+ read_nodes(west);
+ fclose(west);
+
+ body = my_open(basename, basepath, ".body");
+ read_nodes(body);
+ fclose(body);
+}
+
+
+/* dump in WaveFront .obj format */
+void dump_nodes(char *basename, char *basepath) {
+ FILE *fp;
+ int i;
+
+ /* dump vertices */
+ printf(" writing vertices in .node format\n");
+ /* printf("Creating node file: %s\n", file);
+ fd = fopen(file, "w"); */
+
+ printf("%d 2 1 0\n", nodecount);
+
+ /* now write out actual node data */
+ for ( i = 0; i < nodecount; i++ ) {
+ printf("%d %.2f %.2f %.2f 0\n", i + 1,
+ nodes[i][0], nodes[i][1], nodes[i][2]);
+ }
+
+ /* fclose(fd); */
+
+}
+
+
+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);
+ parse_index(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 */
+ offset_bucket(&my_index, &ne_index, 1, 1);
+ offset_bucket(&my_index, &nw_index, -1, 1);
+ offset_bucket(&my_index, &se_index, 1, -1);
+ offset_bucket(&my_index, &sw_index, -1, -1);
+
+ offset_bucket(&my_index, &north_index, 0, 1);
+ offset_bucket(&my_index, &south_index, 0, -1);
+ offset_bucket(&my_index, &east_index, 1, 0);
+ offset_bucket(&my_index, &west_index, -1, 0);
+
+ /*
+ printf("Corner indexes = %ld %ld %ld %ld\n",
+ ne_index, nw_index, sw_index, se_index);
+ printf("Edge indexes = %ld %ld %ld %ld\n",
+ north_index, south_index, east_index, west_index);
+ */
+
+ /* load the input data files */
+ build_node_list(basename, basepath);
+
+ /* dump in WaveFront .obj format */
+ dump_nodes(basename, basepath);
+
+ return(0);
+}
+
+
+/* $Log$
+/* Revision 1.1 1998/01/15 02:45:26 curt
+/* Initial revision.
+/*
+ */
projects / flightgear.git / commitdiff