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#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <grass/gis.h>
#include <grass/raster.h>
#include <grass/glocale.h>
#include "raster3d_intern.h"
/*---------------------------------------------------------------------------*/
void Rast3d_range_update_from_tile(RASTER3D_Map *map, const void *tile,
int rows, int cols, int depths,
int xRedundant, int yRedundant,
int zRedundant UNUSED, int nofNum, int type)
{
int y, z, cellType;
struct FPRange *range;
range = &(map->range);
cellType = Rast3d_g3d_type2cell_type(type);
if (nofNum == map->tileSize) {
Rast_row_update_fp_range(tile, map->tileSize, range, cellType);
return;
}
if (xRedundant) {
for (z = 0; z < depths; z++) {
for (y = 0; y < rows; y++) {
Rast_row_update_fp_range(tile, cols, range, cellType);
tile = G_incr_void_ptr(tile, map->tileX * Rast3d_length(type));
}
if (yRedundant)
tile = G_incr_void_ptr(tile, map->tileX * yRedundant *
Rast3d_length(type));
}
return;
}
if (yRedundant) {
for (z = 0; z < depths; z++) {
Rast_row_update_fp_range(tile, map->tileX * rows, range, cellType);
tile = G_incr_void_ptr(tile, map->tileXY * Rast3d_length(type));
}
return;
}
Rast_row_update_fp_range(tile, map->tileXY * depths, range, cellType);
}
/*---------------------------------------------------------------------------*/
int Rast3d_read_range(const char *name, const char *mapset,
struct FPRange *drange)
/* adapted from Rast_read_fp_range */
{
int fd;
int bytes_read;
char xdr_buf[2 * RASTER3D_XDR_DOUBLE_LENGTH];
DCELL dcell1, dcell2;
Rast_init_fp_range(drange);
fd = -1;
fd = G_open_old_misc(RASTER3D_DIRECTORY, RASTER3D_RANGE_ELEMENT, name,
mapset);
if (fd < 0) {
G_warning(_("Unable to open range file for [%s in %s]"), name, mapset);
return -1;
}
bytes_read = read(fd, xdr_buf, 2 * RASTER3D_XDR_DOUBLE_LENGTH);
/* if the f_range file exists, but empty the range is NULL -> a NULL map */
if (bytes_read == 0) {
close(fd);
return 1;
}
if (bytes_read != 2 * RASTER3D_XDR_DOUBLE_LENGTH) {
close(fd);
G_warning(_("Error reading range file for [%s in %s]"), name, mapset);
return 2;
}
G_xdr_get_double(&dcell1, &xdr_buf[RASTER3D_XDR_DOUBLE_LENGTH * 0]);
G_xdr_get_double(&dcell2, &xdr_buf[RASTER3D_XDR_DOUBLE_LENGTH * 1]);
Rast_update_fp_range(dcell1, drange);
Rast_update_fp_range(dcell2, drange);
close(fd);
return 1;
}
/*---------------------------------------------------------------------------*/
/*!
* \brief Loads the range into the range structure of <em>map</em>.
*
* \param map a pointer to a raster 3D map object
* \return 1 ... if successful
* 0 ... otherwise.
*/
int Rast3d_range_load(RASTER3D_Map *map)
{
if (map->operation == RASTER3D_WRITE_DATA)
return 1;
if (Rast3d_read_range(map->fileName, map->mapset, &(map->range)) == -1) {
return 0;
}
return 1;
}
/*---------------------------------------------------------------------------*/
/*!
* \brief Returns in <em>min</em> and <em>max</em> the minimum and maximum
* values of the range.
*
* \param map a pointer to a raster 3D map object
* \param min a pointer to a double to store minumim
* \param max a pointer to a double to store maximum
*/
void Rast3d_range_min_max(RASTER3D_Map *map, double *min, double *max)
{
Rast_get_fp_range_min_max(&(map->range), min, max);
}
/*-------------------------------------------------------------------------*/
static int writeRange(const char *name, struct FPRange *range)
/* adapted from Rast_write_fp_range */
{
char xdr_buf[2 * RASTER3D_XDR_DOUBLE_LENGTH];
int fd;
fd = G_open_new_misc(RASTER3D_DIRECTORY, RASTER3D_RANGE_ELEMENT, name);
if (fd < 0) {
G_warning(_("Unable to open range file for <%s>"), name);
return -1;
}
if (range->first_time) {
/* if range hasn't been updated, write empty file meaning NULLs */
close(fd);
return 0;
}
G_xdr_put_double(&xdr_buf[RASTER3D_XDR_DOUBLE_LENGTH * 0], &range->min);
G_xdr_put_double(&xdr_buf[RASTER3D_XDR_DOUBLE_LENGTH * 1], &range->max);
if (write(fd, xdr_buf, RASTER3D_XDR_DOUBLE_LENGTH * 2) !=
RASTER3D_XDR_DOUBLE_LENGTH * 2)
goto error;
close(fd);
return 0;
error:
close(fd);
G_remove_misc(RASTER3D_DIRECTORY, RASTER3D_RANGE_ELEMENT,
name); /* remove the old file with this name */
G_warning("can't write range file for [%s in %s]", name, G_mapset());
return -1;
}
/*---------------------------------------------------------------------------*/
/*!
* \brief
*
* Writes the range which is stored in the range structure of <em>map</em>.
* (This function is invoked automatically when a new file is closed).
*
* \param map
* \return 1 ... if successful
* 0 ... otherwise.
*/
int Rast3d_range_write(RASTER3D_Map *map)
{
char path[GPATH_MAX];
Rast3d_filename(path, RASTER3D_RANGE_ELEMENT, map->fileName, map->mapset);
remove(path);
if (writeRange(map->fileName, &(map->range)) == -1) {
Rast3d_error("Rast3d_closeCellNew: error in writeRange");
return 0;
}
return 1;
}
/*---------------------------------------------------------------------------*/
int Rast3d_range_init(RASTER3D_Map *map)
{
Rast_init_fp_range(&(map->range));
return 0;
}
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