// (Log is kept at end of this file)
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
#include <ctype.h> // isspace()
+#include <stdlib.h> // atoi()
#include <math.h> // rint()
#include <stdio.h>
-#include <stdlib.h> // atoi()
#include <string.h>
#include <sys/stat.h> // stat()
#include <unistd.h> // stat()
-#include <zlib/zlib.h>
+#include <string>
+
+// #include <zlib/zlib.h>
+#include <Misc/fgstream.hxx>
+#include <Misc/strutils.hxx>
#include "dem.hxx"
#include "leastsqs.hxx"
#include <Include/fg_constants.h>
+#define MAX_EX_NODES 10000
+
#ifdef WIN32
# define MKDIR(a) mkdir(a,S_IRWXU) // I am just guessing at this flag (NHV)
#endif // WIN32
#ifdef WIN32
// return the file path name ( foo/bar/file.ext = foo/bar )
-void extract_path (char *in, char *base) {
+static void extract_path (char *in, char *base) {
int len, i;
len = strlen (in);
// Make a subdirectory
-int my_mkdir (char *dir) {
+static int my_mkdir (char *dir) {
struct stat stat_buf;
int result;
// open a DEM file
-int fgDEM::open ( char *file ) {
+int fgDEM::open ( const string& file ) {
// open input file (or read from stdin)
- if ( strcmp(file, "-") == 0 ) {
+ if ( file == "-" ) {
printf("Loading DEM data file: stdin\n");
// fd = stdin;
- fd = gzdopen(STDIN_FILENO, "r");
+ // fd = gzdopen(STDIN_FILENO, "r");
+ printf("Not yet ported ...\n");
+ return 0;
} else {
- if ( (fd = gzopen(file, "rb")) == NULL ) {
- printf("Cannot gzopen %s\n", file);
- return(0);
+ in = new fg_gzifstream( file );
+ if ( !in ) {
+ cout << "Cannot open " + file + "\n";
+ return 0;
}
- printf("Loading DEM data file: %s\n", file);
+ cout << "Loading DEM data file: " + file + "\n";
}
- return(1);
+ return 1;
}
// close a DEM file
-int fgDEM::close ( void ) {
- gzclose(fd);
+int fgDEM::close () {
+ // the fg_gzifstream doesn't seem to have a close()
- return(1);
+ delete(in);
+
+ return 1;
}
// return next token from input stream
-static void next_token(gzFile fd, char *token) {
- int i, result;
- char c;
+string fgDEM::next_token() {
+ string token;
- i = 0;
- c = gzgetc(fd);
- // skip past spaces
- while ( (c != -1) && (c == ' ') ) {
- c = gzgetc(fd);
- }
- while ( (c != -1) && (c != ' ') && (c != '\n') ){
- token[i] = c;
- i++;
- c = gzgetc(fd);
- }
- token[i] = '\0';
+ in->stream() >> token;
- if ( c == -1 ) {
- strcpy(token, "__END_OF_FILE__");
- printf(" Warning: Reached end of file!\n");
- }
+ cout << " returning " + token + "\n";
- // printf(" returning %s\n", token);
+ return token;
}
// return next integer from input stream
-static int next_int(gzFile fd) {
- char token[80];
+int fgDEM::next_int() {
+ int result;
+
+ in->stream() >> result;
- next_token(fd, token);
- return ( atoi(token) );
+ return result;
}
// return next double from input stream
-static double next_double(gzFile fd) {
- char token[80];
+double fgDEM::next_double() {
+ double result;
+
+ in->stream() >> result;
- next_token(fd, token);
- return ( atof(token) );
+ return result;
}
// return next exponential num from input stream
-static int next_exp(gzFile fd) {
- char token[80];
+int fgDEM::next_exp() {
+ string token;
double mantissa;
int exp, acc;
int i;
- next_token(fd, token);
+ token = next_token();
- sscanf(token, "%lfD%d", &mantissa, &exp);
+ sscanf(token.c_str(), "%lfD%d", &mantissa, &exp);
- // printf(" Mantissa = %.4f Exp = %d\n", mantissa, exp);
+ cout << " Mantissa = " << mantissa << " Exp = " << exp << "\n";
acc = 1;
if ( exp > 0 ) {
// read and parse DEM "A" record
-void fgDEM::read_a_record( void ) {
+int fgDEM::read_a_record() {
int i, inum;
double dnum;
- char name[144];
- char token[80];
+ string name, token;
+ char c;
char *ptr;
// get the name field (144 characters)
for ( i = 0; i < 144; i++ ) {
- name[i] = gzgetc(fd);
+ in->get(c);
+ name += c;
}
- name[i+1] = '\0';
-
- // clean off the whitespace at the end
- for ( i = strlen(name)-2; i > 0; i-- ) {
- if ( !isspace(name[i]) ) {
- i=0;
- } else {
- name[i] = '\0';
- }
- }
- printf(" Quad name field: %s\n", name);
+
+ // clean off the trailing whitespace
+ name = trimleft(name);
+ cout << " Quad name field: " + name + "\n";
// DEM level code, 3 reflects processing by DMA
- inum = next_int(fd);
- printf(" DEM level code = %d\n", inum);
+ inum = next_int();
+ cout << " DEM level code = " << inum << "\n";
+
+ if ( inum > 3 ) {
+ return 0;
+ }
// Pattern code, 1 indicates a regular elevation pattern
- inum = next_int(fd);
- printf(" Pattern code = %d\n", inum);
+ inum = next_int();
+ cout << " Pattern code = " << inum << "\n";
// Planimetric reference system code, 0 indicates geographic
// coordinate system.
- inum = next_int(fd);
- printf(" Planimetric reference code = %d\n", inum);
+ inum = next_int();
+ cout << " Planimetric reference code = " << inum << "\n";
// Zone code
- inum = next_int(fd);
- printf(" Zone code = %d\n", inum);
+ inum = next_int();
+ cout << " Zone code = " << inum << "\n";
// Map projection parameters (ignored)
for ( i = 0; i < 15; i++ ) {
- dnum = next_double(fd);
+ dnum = next_double();
// printf("%d: %f\n",i,dnum);
}
// Units code, 3 represents arc-seconds as the unit of measure for
// ground planimetric coordinates throughout the file.
- inum = next_int(fd);
+ inum = next_int();
if ( inum != 3 ) {
- printf(" Unknown (X,Y) units code = %d!\n", inum);
+ cout << " Unknown (X,Y) units code = " << inum << "!\n";
exit(-1);
}
// Units code; 2 represents meters as the unit of measure for
// elevation coordinates throughout the file.
- inum = next_int(fd);
+ inum = next_int();
if ( inum != 2 ) {
- printf(" Unknown (Z) units code = %d!\n", inum);
+ cout << " Unknown (Z) units code = " << inum << "!\n";
exit(-1);
}
// Number (n) of sides in the polygon which defines the coverage of
// the DEM file (usually equal to 4).
- inum = next_int(fd);
+ inum = next_int();
if ( inum != 4 ) {
- printf(" Unknown polygon dimension = %d!\n", inum);
+ cout << " Unknown polygon dimension = " << inum << "!\n";
exit(-1);
}
// Ground coordinates of bounding box in arc-seconds
- dem_x1 = originx = next_exp(fd);
- dem_y1 = originy = next_exp(fd);
- printf(" Origin = (%.2f,%.2f)\n", originx, originy);
+ dem_x1 = originx = next_exp();
+ dem_y1 = originy = next_exp();
+ cout << " Origin = (" << originx << "," << originy << ")\n";
- dem_x2 = next_exp(fd);
- dem_y2 = next_exp(fd);
+ dem_x2 = next_exp();
+ dem_y2 = next_exp();
- dem_x3 = next_exp(fd);
- dem_y3 = next_exp(fd);
+ dem_x3 = next_exp();
+ dem_y3 = next_exp();
- dem_x4 = next_exp(fd);
- dem_y4 = next_exp(fd);
+ dem_x4 = next_exp();
+ dem_y4 = next_exp();
// Minimum/maximum elevations in meters
- dem_z1 = next_exp(fd);
- dem_z2 = next_exp(fd);
- printf(" Elevation range %.4f %.4f\n", dem_z1, dem_z2);
+ dem_z1 = next_exp();
+ dem_z2 = next_exp();
+ cout << " Elevation range " << dem_z1 << dem_z2 << "\n";
// Counterclockwise angle from the primary axis of ground
// planimetric referenced to the primary axis of the DEM local
// reference system.
- next_token(fd, token);
+ token = next_token();
// Accuracy code; 0 indicates that a record of accuracy does not
// exist and that no record type C will follow.
// I will eventually have to do something with this for data at
// higher latitudes */
- next_token(fd, token);
- printf(" accuracy & spacial resolution string = %s\n", token);
- i = strlen(token);
- printf(" length = %d\n", i);
+ token = next_token();
+ cout << " accuracy & spacial resolution string = " + token + "\n";
+ i = token.length();
+ cout << " length = " << i << "\n";
- ptr = token + i - 12;
- printf(" last field = %s = %.2f\n", ptr, atof(ptr));
+ ptr = token.c_str() + i - 12;
+ cout << " last field = " << ptr << " = " << atof(ptr) << "\n";
ptr[0] = '\0';
ptr = ptr - 12;
col_step = atof(ptr);
- printf(" last field = %s = %.2f\n", ptr, col_step);
+ cout << " last field = " << ptr << " = " << col_step << "\n";
ptr[0] = '\0';
ptr = ptr - 12;
row_step = atof(ptr);
- printf(" last field = %s = %.2f\n", ptr, row_step);
+ cout << " last field = " << ptr << " = " << row_step << "\n";
ptr[0] = '\0';
// accuracy code = atod(token)
- inum = atoi(token);
- printf(" Accuracy code = %d\n", inum);
+ ptr = ptr - 12;
+ inum = atoi(ptr);
+ cout << " Accuracy code = " << inum << "\n";
+
+ cout << " column step = " << col_step <<
+ " row step = " << row_step << "\n";
- printf(" column step = %.2f row step = %.2f\n",
- col_step, row_step);
// dimension of arrays to follow (1)
- next_token(fd, token);
+ token = next_token();
// number of profiles
- dem_num_profiles = cols = next_int(fd);
- printf(" Expecting %d profiles\n", dem_num_profiles);
+ dem_num_profiles = cols = next_int();
+ cout << " Expecting " << dem_num_profiles << " profiles\n";
+
+ return 1;
}
// read and parse DEM "B" record
-void fgDEM::read_b_record( void ) {
- char token[80];
+void fgDEM::read_b_record( ) {
+ string token;
int i;
// row / column id of this profile
- prof_row = next_int(fd);
- prof_col = next_int(fd);
+ prof_row = next_int();
+ prof_col = next_int();
// printf("col id = %d row id = %d\n", prof_col, prof_row);
// Number of columns and rows (elevations) in this profile
- prof_num_rows = rows = next_int(fd);
- prof_num_cols = next_int(fd);
+ prof_num_rows = rows = next_int();
+ prof_num_cols = next_int();
// printf(" profile num rows = %d\n", prof_num_rows);
// Ground planimetric coordinates (arc-seconds) of the first
// elevation in the profile
- prof_x1 = next_exp(fd);
- prof_y1 = next_exp(fd);
+ prof_x1 = next_exp();
+ prof_y1 = next_exp();
// printf(" Starting at %.2f %.2f\n", prof_x1, prof_y1);
// Elevation of local datum for the profile. Always zero for
// 1-degree DEM, the reference is mean sea level.
- next_token(fd, token);
+ token = next_token();
// Minimum and maximum elevations for the profile.
- next_token(fd, token);
- next_token(fd, token);
+ token = next_token();
+ token = next_token();
// One (usually) dimensional array (prof_num_cols,1) of elevations
for ( i = 0; i < prof_num_rows; i++ ) {
- prof_data = next_int(fd);
+ prof_data = next_int();
dem_data[cur_col][i] = (float)prof_data;
}
}
// parse dem file
-int fgDEM::parse( void ) {
+int fgDEM::parse( ) {
int i;
- cur_row = 0;
+ cur_col = 0;
- read_a_record();
+ if ( !read_a_record() ) {
+ return(0);
+ }
for ( i = 0; i < dem_num_profiles; i++ ) {
// printf("Ready to read next b record\n");
cur_col++;
if ( cur_col % 100 == 0 ) {
- printf(" loaded %d profiles of data\n", cur_col);
+ cout << " loaded " << cur_col << "profiles of data\n";
}
}
- printf(" Done parsing\n");
+ cout << " Done parsing\n";
- return(0);
+ return 1;
}
// Use least squares to fit a simpler data set to dem data
-void fgDEM::fit( char *fg_root, double error, struct fgBUCKET *p ) {
+void fgDEM::fit( double error, fgBUCKET *p ) {
double x[DEM_SIZE_1], y[DEM_SIZE_1];
double m, b, ave_error, max_error;
double cury, lasty;
// printf("Please hit return: "); gets(junk);
}
- outputmesh_output_nodes(fg_root, p);
+ // outputmesh_output_nodes(fg_root, p);
}
}
-// Write out a node file that can be used by the "triangle" program
-void fgDEM::outputmesh_output_nodes( char *fg_root, struct fgBUCKET *p ) {
+// Write out a node file that can be used by the "triangle" program.
+// Check for an optional "index.node.ex" file in case there is a .poly
+// file to go along with this node file. Include these nodes first
+// since they are referenced by position from the .poly file.
+void fgDEM::outputmesh_output_nodes( const string& fg_root, fgBUCKET *p ) {
+ double exnodes[MAX_EX_NODES][3];
+ double junk1, junk2, junk3;
struct stat stat_buf;
- char base_path[256], dir[256], file[256];
+ string dir;
+ char base_path[256], file[256], exfile[256];
#ifdef WIN32
char tmp_path[256];
#endif
- char command[256];
+ string command;
FILE *fd;
long int index;
int colmin, colmax, rowmin, rowmax;
- int i, j, count, result;
+ int i, j, count, excount, result;
// determine dimensions
colmin = p->x * ( (cols - 1) / 8);
colmax = colmin + ( (cols - 1) / 8);
rowmin = p->y * ( (rows - 1) / 8);
rowmax = rowmin + ( (rows - 1) / 8);
- printf(" dumping region = %d,%d to %d,%d\n",
- colmin, rowmin, colmax, rowmax);
+ cout << " dumping region = " << colmin << "," << rowmin << " to " <<
+ colmax << "," << rowmax << "\n";
// generate the base directory
fgBucketGenBasePath(p, base_path);
- printf("fg_root = %s Base Path = %s\n", fg_root, base_path);
- sprintf(dir, "%s/Scenery/%s", fg_root, base_path);
- printf("Dir = %s\n", dir);
+ cout << "fg_root = " + fg_root + " Base Path = " + base_path + "\n";
+ dir = fg_root + "/Scenery/" + base_path;
+ cout << "Dir = " + dir + "\n";
// stat() directory and create if needed
- result = stat(dir, &stat_buf);
+ result = stat(dir.c_str(), &stat_buf);
if ( result != 0 ) {
- printf("Stat error need to create directory\n");
+ cout << "Stat error need to create directory\n";
#ifndef WIN32
- sprintf(command, "mkdir -p %s\n", dir);
- system(command);
+ command = "mkdir -p " + dir + "\n";
+ system( command.c_str() );
#else // WIN32
extract_path (base_path, tmp_path);
- sprintf (dir, "%s/Scenery", fg_root);
- if (my_mkdir (dir)) { exit (-1); }
+ dir = fg_root + "/Scenery";
+ if (my_mkdir ( dir.c_str() )) { exit (-1); }
- sprintf (dir, "%s/Scenery/%s", fg_root, tmp_path);
- if (my_mkdir (dir)) { exit (-1); }
+ dir += fg_root + "/Scenery/" + tmp_path;
+ if (my_mkdir ( dir.c_str() )) { exit (-1); }
- sprintf (dir, "%s/Scenery/%s", fg_root, base_path);
- if (my_mkdir (dir)) { exit (-1); }
+ dir += fg_root + "/Scenery/" + base_path;
+ if (my_mkdir ( dir.c_str() )) { exit (-1); }
#endif // WIN32
// get index and generate output file name
index = fgBucketGenIndex(p);
- sprintf(file, "%s/%ld.node", dir, index);
+ sprintf(file, "%s/%ld.node", dir.c_str(), index);
+
+ // get (optional) extra node file name (in case there is matching
+ // .poly file.
+ strcpy(exfile, file);
+ strcat(exfile, ".ex");
+
+ // load extra nodes if they exist
+ excount = 0;
+ if ( (fd = fopen(exfile, "r")) != NULL ) {
+ fscanf(fd, "%d %d %d %d", &excount, &junk1, &junk2, &junk3);
+
+ if ( excount > MAX_EX_NODES - 1 ) {
+ printf("Error, too many 'extra' nodes, increase array size\n");
+ exit(-1);
+ } else {
+ printf(" Expecting %d 'extra' nodes\n", excount);
+ }
+
+ for ( i = 1; i <= excount; i++ ) {
+ fscanf(fd, "%d %lf %lf %lf\n", &junk1,
+ &exnodes[i][0], &exnodes[i][1], &exnodes[i][2]);
+ printf("(extra) %d %.2f %.2f %.2f\n",
+ i, exnodes[i][0], exnodes[i][1], exnodes[i][2]);
+ }
+ fclose(fd);
+ }
printf("Creating node file: %s\n", file);
fd = fopen(file, "w");
- // first count nodes to generate header
+ // first count regular nodes to generate header
count = 0;
for ( j = rowmin; j <= rowmax; j++ ) {
for ( i = colmin; i <= colmax; i++ ) {
}
// printf(" count = %d\n", count);
}
- fprintf(fd, "%d 2 1 0\n", count);
+ fprintf(fd, "%d 2 1 0\n", count + excount);
- // now write out actual node data
- count = 1;
+ // now write out extra node data
+ for ( i = 1; i <= excount; i++ ) {
+ fprintf(fd, "%d %.2f %.2f %.2f\n",
+ i, exnodes[i][0], exnodes[i][1], exnodes[i][2]);
+ }
+
+ // write out actual node data
+ count = excount + 1;
for ( j = rowmin; j <= rowmax; j++ ) {
for ( i = colmin; i <= colmax; i++ ) {
if ( output_data[i][j] > -9000.0 ) {
fgDEM::~fgDEM( void ) {
// printf("class fgDEM DEstructor called.\n");
+ delete(dem_data);
+ delete(output_data);
}
// $Log$
+// Revision 1.14 1998/09/19 17:59:45 curt
+// Use c++ streams (fg_gzifstream). Also converted many character arrays to
+// the string class.
+//
+// Revision 1.13 1998/09/09 16:24:04 curt
+// Fixed a bug in the handling of exclude files which was causing
+// a crash by calling fclose() on an invalid file handle.
+//
+// Revision 1.12 1998/08/24 20:03:31 curt
+// Eliminated a possible memory overrun error.
+// Use the proper free() rather than the incorrect delete().
+//
+// Revision 1.11 1998/07/20 12:46:11 curt
+// When outputing to a .node file, first check for an optional
+// "index.node.ex" file in case there is a .poly file to go along with this
+// node file. Include these nodes first since they are referenced by position
+// from the .poly file. This is my first pass at adding an area "cutout"
+// feature to the terrain generation pipeline.
+//
+// Revision 1.10 1998/07/13 20:58:02 curt
+// .
+//
+// Revision 1.9 1998/07/13 15:29:49 curt
+// Added #ifdef HAVE_CONFIG_H
+//
+// Revision 1.8 1998/07/04 00:47:18 curt
+// typedef'd struct fgBUCKET.
+//
+// Revision 1.7 1998/06/05 18:14:39 curt
+// Abort out early when reading the "A" record if it doesn't look like
+// a proper DEM file.
+//
+// Revision 1.6 1998/05/02 01:49:21 curt
+// Fixed a bug where the wrong variable was being initialized.
+//
// Revision 1.5 1998/04/25 15:00:32 curt
// Changed "r" to "rb" in gzopen() options. This fixes bad behavior in win32.
//
projects / flightgear.git / blobdiff