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v2.7 LIDAR

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This commit is contained in:
alex
2016-01-03 21:42:32 +00:00
parent f20c7e6997
commit a9c1916017
9 changed files with 379 additions and 265 deletions
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195
inputs.cc
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@@ -3,11 +3,144 @@
#include <string.h>
#include <unistd.h>
#include <math.h>
#include "common.h"
#include "main.hh"
int LoadSDF_SDF(char *name, int winfiles)
int loadLIDAR(char *filename)
{
/* This function reads a single LIDAR tile of n rows and n columns in ASCII grid format.
The tile must have WGS84 bounds in the header in the order: WEST,SOUTH,EAST,NORTH
ncols 5000
nrows 5000
xllcorner -2.291359
yllcorner 51.788295
xurcorner -2.146674
yurcorner 51.878474
cellsize 2
NODATA_value -9999
*/
int x, y, width, height, cellsize;
double xll, yll, xur, yur;
char found, free_page = 0, line[50000], jline[20], lid_file[255],
path_plus_name[255], *junk = NULL;
FILE *fd;
char * pch;
fd = fopen(filename, "rb");
if (fd != NULL) {
if (debug) {
fprintf(stdout,"Loading \"%s\"...\n", filename);
fflush(stdout);
}
if (fgets(line, 20, fd) != NULL) {
pch = strtok (line," ");
pch = strtok (NULL, " ");
width=atoi(pch);
}
if (fgets(line, 20, fd) != NULL) {
height=atoi(pch);
}
fgets(line, 21, fd); //
if (fgets(line, 22, fd) != NULL) {
xll=atof(pch);
}
fgets(line, 21, fd); //
if (fgets(line, 22, fd) != NULL) {
yll=atof(pch);
}
fgets(line, 21, fd); //
if (fgets(line, 22, fd) != NULL) {
xur=atof(pch);
}
fgets(line, 21, fd); //
if (fgets(line, 22, fd) != NULL) {
yur=atof(pch);
}
fgets(line, 21, fd); //
if (fgets(line, 21, fd) != NULL) {
cellsize=atoi(pch);
}
// Transform WGS84 longitudes into 'west' values as society finishes east of Greenwich ;)
if(xll > 0){
xll=360-xll;
}
if(xur > 0){
xur=360-xur;
}
if(xll < 0){
xll=xll*-1;
}
if(xur < 0){
xur=xur*-1;
}
dem[0].min_north=yll;
min_north=yll;
dem[0].max_north=yur;
max_north=yur;
dem[0].min_west=xur;
min_west=xur;
dem[0].max_west=xll;
max_west=xll;
if(debug){
fprintf(stdout,"yll %.2f yur %.2f xur %.2f xll %.2f\n",yll,yur,xur,xll);
}
if(width!=height){
fprintf(stdout,"LIDAR tile is not a square. Rows != Columns\n");
return 0;
}
fgets(line, 30, fd); // NODATA
for (y = height-1; y > -1; y--) {
x=width-1;
if (fgets(line, 50000,fd) != NULL) {
pch = strtok (line, " "); // 500
while(pch != NULL){
if(atoi(pch)<-999){
pch="0";
}
dem[0].data[y][x]=atoi(pch);
dem[0].signal[x][y] = 0;
dem[0].mask[x][y] = 0;
if (atoi(pch) > dem[0].max_el){
dem[0].max_el = atoi(pch);
max_elevation = atoi(pch);
}
if (atoi(pch) < dem[0].min_el){
dem[0].min_el = atoi(pch);
min_elevation = dem[0].min_el;
}
x--;
pch = strtok (NULL, " "); // 500
}
}else{
fprintf(stdout,"LIDAR error @ line %d\n",x);
return 0;
}
}
fclose(fd);
return 0;
}
else
return -1;
}
int LoadSDF_SDF(char *name)
{
/* This function reads uncompressed ss Data Files (.sdf)
containing digital elevation model data into memory.
@@ -27,13 +160,10 @@ int LoadSDF_SDF(char *name, int winfiles)
sdf_file[x] = 0;
/* Parse filename for minimum latitude and longitude values */
if (winfiles == 1) {
sscanf(sdf_file, "%d=%d=%d=%d", &minlat, &maxlat, &minlon,
&maxlon);
} else {
sscanf(sdf_file, "%d:%d:%d:%d", &minlat, &maxlat, &minlon,
&maxlon);
}
sdf_file[x] = '.';
sdf_file[x + 1] = 's';
@@ -87,19 +217,19 @@ int LoadSDF_SDF(char *name, int winfiles)
}
if (fgets(line, 19, fd) != NULL) {
sscanf(line, "%d", &dem[indx].max_west);
sscanf(line, "%f", &dem[indx].max_west);
}
if (fgets(line, 19, fd) != NULL) {
sscanf(line, "%d", &dem[indx].min_north);
sscanf(line, "%f", &dem[indx].min_north);
}
if (fgets(line, 19, fd) != NULL) {
sscanf(line, "%d", &dem[indx].min_west);
sscanf(line, "%f", &dem[indx].min_west);
}
if (fgets(line, 19, fd) != NULL) {
sscanf(line, "%d", &dem[indx].max_north);
sscanf(line, "%f", &dem[indx].max_north);
}
/*
Here X lines of DEM will be read until IPPD is reached.
@@ -205,7 +335,7 @@ int LoadSDF_SDF(char *name, int winfiles)
return 0;
}
char LoadSDF(char *name, int winfiles)
char LoadSDF(char *name)
{
/* This function loads the requested SDF file from the filesystem.
It first tries to invoke the LoadSDF_SDF() function to load an
@@ -220,19 +350,16 @@ char LoadSDF(char *name, int winfiles)
char found, free_page = 0;
int return_value = -1;
return_value = LoadSDF_SDF(name, winfiles);
return_value = LoadSDF_SDF(name);
/* If neither format can be found, then assume the area is water. */
if (return_value == 0 || return_value == -1) {
if (winfiles == 1) {
sscanf(name, "%d=%d=%d=%d", &minlat, &maxlat, &minlon,
&maxlon);
} else {
sscanf(name, "%d:%d:%d:%d", &minlat, &maxlat, &minlon,
&maxlon);
}
/* Is it already in memory? */
for (indx = 0, found = 0; indx < MAXPAGES && found == 0; indx++) {
@@ -1138,8 +1265,7 @@ void LoadDBMColors(struct site xmtr)
}
}
void LoadTopoData(int max_lon, int min_lon, int max_lat, int min_lat,
int winfiles)
void LoadTopoData(int max_lon, int min_lon, int max_lat, int min_lat)
{
/* This function loads the SDF files required
to cover the limits of the region specified. */
@@ -1167,17 +1293,7 @@ void LoadTopoData(int max_lon, int min_lon, int max_lat, int min_lat,
while (ymax >= 360)
ymax -= 360;
if (winfiles == 1) {
if (ippd == 3600)
snprintf(string, 19,
"%d=%d=%d=%d=hd", x,
x + 1, ymin, ymax);
else
snprintf(string, 16,
"%d=%d=%d=%d", x,
x + 1, ymin, ymax);
} else {
if (ippd == 3600)
snprintf(string, 19,
"%d:%d:%d:%d-hd", x,
@@ -1186,9 +1302,7 @@ void LoadTopoData(int max_lon, int min_lon, int max_lat, int min_lat,
snprintf(string, 16,
"%d:%d:%d:%d", x,
x + 1, ymin, ymax);
}
LoadSDF(string, winfiles);
LoadSDF(string);
}
}
@@ -1211,17 +1325,6 @@ void LoadTopoData(int max_lon, int min_lon, int max_lat, int min_lat,
while (ymax >= 360)
ymax -= 360;
if (winfiles == 1) {
if (ippd == 3600)
snprintf(string, 19,
"%d=%d=%d=%d=hd", x,
x + 1, ymin, ymax);
else
snprintf(string, 16,
"%d=%d=%d=%d", x,
x + 1, ymin, ymax);
} else {
if (ippd == 3600)
snprintf(string, 19,
"%d:%d:%d:%d-hd", x,
@@ -1230,9 +1333,7 @@ void LoadTopoData(int max_lon, int min_lon, int max_lat, int min_lat,
snprintf(string, 16,
"%d:%d:%d:%d", x,
x + 1, ymin, ymax);
}
LoadSDF(string, winfiles);
LoadSDF(string);
}
}
}