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/*
NASA/TRMM, Code 910.1.
This is the TRMM Office Radar Software Library.
Copyright (C) 1996, 1997
John H. Merritt
Space Applications Corporation
Vienna, Virginia
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* Mike Kolander
* Space Applications Corporation
* NASA/Goddard 910.1
*/
#include <stdlib.h>
#include <string.h>
#include "rsl.h"
extern int radar_verbose_flag;
/*************************************************************/
/* */
/* RSL_free_slice */
/* */
/*************************************************************/
void RSL_free_slice(Slice *slice)
{
/* Frees memory allocated to a slice structure, and associated
pointer and data arrays.
*/
if (slice != NULL)
{
if (slice->data != NULL)
{
if (slice->data[0] != NULL)
free(slice->data[0]); /* Free the 2D data array. */
free(slice->data); /* Free the vector of pointers. */
}
free(slice); /* Free the slice structure. */
}
}
/*************************************************************/
/* */
/* RSL_new_slice */
/* */
/*************************************************************/
Slice *RSL_new_slice(int nrows, int ncols)
{
/* Allocates memory for a slice structure, and associated pointer
and data arrays.
*/
Slice *s;
Slice_value *data;
int row;
/* Allocate a slice. */
s = (Slice *)calloc(1, sizeof(Slice));
if (s == NULL) perror("RSL_new_slice");
/* Allocate a vector of 'nrows' pointers. */
s->data = (Slice_value **)calloc(nrows, sizeof(Slice_value *));
if (s->data == NULL) perror("RSL_new_slice");
/* Allocate a 2 dimensional array for the actual data values. */
data = (Slice_value *)calloc(nrows*ncols, sizeof(Slice_value));
if (data == NULL) perror("RSL_new_slice");
/* Fill all the 'nrows' pointer slots created above. */
for (row=0; row<nrows; row++)
s->data[row] = data + row*ncols;
return(s);
}
/*************************************************************/
/* */
/* RSL_new_cube */
/* */
/*************************************************************/
Cube *RSL_new_cube(int ncarpi)
{
/* Allocate memory for a cube structure, and an associated array
of carpi pointers.
*/
Cube *cube;
cube = (Cube *) calloc(1, sizeof(Cube));
if (cube == NULL) return(NULL);
cube->carpi = (Carpi **) calloc(ncarpi, sizeof(Carpi *));
if (cube->carpi == NULL) return(NULL);
return(cube);
}
/*************************************************************/
/* */
/* RSL_free_cube */
/* */
/*************************************************************/
void RSL_free_cube(Cube *cube)
{
/* Frees memory allocated to a cube structure and associated
carpi structures.
*/
int j;
if (cube != NULL)
{
if (cube->carpi != NULL)
{
for (j=0; j<cube->nz; j++)
if (cube->carpi[j] != NULL)
RSL_free_carpi(cube->carpi[j]);
free(cube->carpi);
}
free(cube);
}
}
/*************************************************************/
/* */
/* RSL_volume_to_cube */
/* */
/*************************************************************/
Cube *RSL_volume_to_cube(Volume *v, float dx, float dy, float dz,
int nx, int ny, int nz, float grnd_r,
int radar_x, int radar_y, int radar_z)
/* radar_z = 0 is the only thing that makes sense. Why pass it? */
{
float lat=0;
float lon=0;
int i;
Cube *cube;
if (v == NULL) return NULL;
/* check validity of radar site coordinates in cube. */
if (radar_z != 0) return NULL;
if ((radar_x < 0) || (radar_x > nx)) return NULL;
if ((radar_y < 0) || (radar_y > ny)) return NULL;
cube = (Cube *)RSL_new_cube(nz);
if (cube == NULL) return NULL;
cube->nx = nx;
cube->ny = ny;
cube->nz = nz;
cube->dx = dx;
cube->dy = dy;
cube->dz = dz;
if (v->h.type_str != (char *) NULL)
cube->data_type = (char *)strdup(v->h.type_str);
cube->lat = lat;
cube->lon = lon;
/* Create nz carpis */
for (i=0; i<nz; i++)
cube->carpi[i] = (Carpi *)RSL_volume_to_carpi(v, (i+1)*dz, grnd_r,
dx, dy, nx, ny,
radar_x, radar_y,
lat, lon);
return cube;
}
/*************************************************************/
/* */
/* RSL_get_slice_from_cube */
/* */
/*************************************************************/
Slice *RSL_get_slice_from_cube(Cube *cube, int x, int y, int z)
/*
Check validity of parameters x,y,z , which define the plane of the
required slice. Two of the three parameters must equal -1 and the
third must be nonnegative; eg, the vertical plane y=100 is
specified by the parameters x=-1, y=100, z=-1
Assumes valid ranges for x, y, z are:
0 <= x <= nx-1 , 0 <= y <= ny-1 , 1 <= z <= nz
The range of z starts at 1 , since a cappi (or carpi) at
height z=0 makes no sense.
*/
{
int i, j;
Slice *slice;
if (cube == NULL) return(NULL);
/* Slice defined by the plane y = const */
if ((x == -1) && (z == -1) && (y > -1) && (y < cube->ny))
{
slice = (Slice *) RSL_new_slice(cube->nz, cube->nx);
slice->data_type = (char *)strdup(cube->data_type);
slice->dx = cube->dx;
slice->dy = cube->dz;
slice->nx = cube->nx;
slice->ny = cube->nz;
slice->f = cube->carpi[0]->f;
slice->invf = cube->carpi[0]->invf;
/* Retrieve the required data values from the cube and place into
the slice structure. */
for (j=0; j<cube->nz; j++)
for (i=0; i<cube->nx; i++)
slice->data[j][i] = (Slice_value) cube->carpi[j]->data[y][i];
}
/* Slice defined by the plane x = const */
else if ((y == -1) && (z == -1) && (x > -1) && (x < cube->nx))
{
slice = (Slice *) RSL_new_slice(cube->nz, cube->ny);
slice->data_type = (char *)strdup(cube->data_type);
slice->dx = cube->dy;
slice->dy = cube->dz;
slice->nx = cube->ny;
slice->ny = cube->nz;
slice->f = cube->carpi[0]->f;
slice->invf = cube->carpi[0]->invf;
/* Retrieve the required data values from the cube and place into
the slice structure. */
for (j=0; j<cube->nz; j++)
for (i=0; i<cube->ny; i++)
slice->data[j][i] = (Slice_value) cube->carpi[j]->data[i][x];
}
/* Want slice defined by the plane z = const ; ie, a carpi */
else if ((x == -1) && (y == -1) && (z > 0) && (z <= cube->nz))
{
slice = (Slice *) RSL_new_slice(cube->ny, cube->nx);
slice->data_type = (char *)strdup(cube->data_type);
slice->dx = cube->dx;
slice->dy = cube->dy;
slice->nx = cube->nx;
slice->ny = cube->ny;
slice->f = cube->carpi[z-1]->f;
slice->invf = cube->carpi[z-1]->invf;
/* Just copy carpi data values into slice structure. */
for (j=0; j<cube->ny; j++)
for (i=0; i<cube->nx; i++)
slice->data[j][i] = (Slice_value) cube->carpi[z-1]->data[j][i];
}
else /* Invalid parameters. */
{
if (radar_verbose_flag)
{
fprintf(stderr,"\nRSL_get_slice_from_cube(): passed invalid parameters\n");
fprintf(stderr,"nx:%d ny:%d nz:%d x:%d y:%d z:%d\n",cube->nx,
cube->ny,cube->nz,x,y,z);
}
return(NULL);
}
return(slice);
}
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