OGSF library - loading surfaces (lower level functions) More...

#include <stdlib.h>
#include <string.h>
#include <grass/gis.h>
#include <grass/glocale.h>
#include <grass/bitmap.h>
#include <grass/gsurf.h>
#include <grass/gstypes.h>
#include "gsget.h"

Include dependency graph for Gs3.c:

Go to the source code of this file.

Macros
#define	INIT_MINMAX(p, nm, size, min, max, found)
	Used in the function Gs_update_attrange() More...

#define	SET_MINMAX(p, nm, size, min, max)
	Used in the function Gs_update_attrange() More...

#define	NO_DATA_COL 0xffffff

Typedefs
typedef int	FILEDESC

Functions
double	Gs_distance (double from, double to)
	Calculates distance in METERS between two points in current projection (2D) More...

int	Gs_loadmap_as_float (struct Cell_head wind, const char map_name, float buff, struct BM nullmap, int *has_null)
	Load raster map as floating point map. More...

int	Gs_loadmap_as_int (struct Cell_head wind, const char map_name, int buff, struct BM nullmap, int *has_null)
	Load raster map as integer map. More...

int	Gs_numtype (const char filename, int negflag)
	Get map data type. More...

int	Gs_loadmap_as_short (struct Cell_head wind, const char map_name, short buff, struct BM nullmap, int *has_null)
	Load raster map as integer map. More...

int	Gs_loadmap_as_char (struct Cell_head wind, const char map_name, unsigned char buff, struct BM nullmap, int *has_null)
	Load raster map as integer map. More...

int	Gs_loadmap_as_bitmap (struct Cell_head wind, const char map_name, struct BM *buff)
	Load raster map as integer map. More...

int	Gs_build_256lookup (const char filename, int buff)
	Build color table (256) More...

void	Gs_pack_colors (const char filename, int buff, int rows, int cols)
	Pack color table. More...

void	Gs_pack_colors_float (const char filename, float fbuf, int *ibuf, int rows, int cols)
	Pack color table (floating-point map) More...

int	Gs_get_cat_label (const char filename, int drow, int dcol, char catstr)
	Get categories/labels. More...

int	Gs_save_3dview (const char vname, geoview gv, geodisplay gd, struct Cell_head w, geosurf *defsurf)
	Save 3dview. More...

int	Gs_load_3dview (const char vname, geoview gv, geodisplay gd, struct Cell_head w, geosurf *defsurf)
	Load 3dview. More...

int	Gs_update_attrange (geosurf *gs, int desc)
	Update no_zero ranges for attribute (actually no_null now) More...

Detailed Description

OGSF library - loading surfaces (lower level functions)

GRASS OpenGL gsurf OGSF Library

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author: Bill Brown USACERL, GMSL/University of Illinois (January 1993); Doxygenized by Martin Landa <landa.martin gmail.com> (May 2008)

Definition in file Gs3.c.

Macro Definition Documentation

#define INIT_MINMAX	(	p,
		nm,
		size,
		min,
		max,
		found
	)

Value:

found = 0; \
        p+=(size-1); \
        while (size--) \
        { \
	    if (!BM_GET_BYOFFSET(nm, size)) \
            { \
		min = max = *p; \
                found = 1; \
                break; \
            } \
            p--; \
        }

Used in the function Gs_update_attrange()

Definition at line 35 of file Gs3.c.

Referenced by Gs_update_attrange().

#define NO_DATA_COL 0xffffff

Definition at line 72 of file Gs3.c.

Referenced by Gs_build_256lookup(), Gs_pack_colors(), and Gs_pack_colors_float().

#define SET_MINMAX	(	p,
		nm,
		size,
		min,
		max
	)

Value:

p+=(size-1); \
        while(size--) \
        { \
	    if (!BM_GET_BYOFFSET(nm, size)) \
            { \
		if (*p < min) \
                { \
		    min = *p; \
                } \
		else if (*p > max) \
                { \
		    max = *p; \
                }  \
            } \
            p--; \
        }

Used in the function Gs_update_attrange()

Definition at line 52 of file Gs3.c.

Referenced by Gs_update_attrange().

Typedef Documentation

typedef int FILEDESC

Definition at line 70 of file Gs3.c.

Function Documentation

int Gs_build_256lookup	(	const char *	filename,
		int *	buff
	)

Build color table (256)

Calling function must have already allocated space in buff for range of data (256 for now) - simply calls get_color for each cat in color range

Parameters

	filename	raster map name
[out]	buff	data buffer

Returns: 1 on success; 0 on failure

Definition at line 627 of file Gs3.c.

References b, g, G_debug(), G_find_cell2(), G_get_color_range(), G_lookup_colors(), G_read_colors(), G_warning(), G_zero(), max, min, NO_DATA_COL, r, and main::set.

Referenced by GS_load_att_map().

double Gs_distance	(	double *	from,
		double *	to
	)

Calculates distance in METERS between two points in current projection (2D)

Uses G_distance().

Parameters

from	'from' point (X, Y)
to	'to' point (X, Y)

Returns: distance

Definition at line 84 of file Gs3.c.

References first, G_begin_distance_calculations(), and G_distance().

Referenced by GS_geodistance().

int Gs_get_cat_label	(	const char *	filename,
		int	drow,
		int	dcol,
		char *	catstr
	)

Get categories/labels.

Formats label as in d.what.rast -> (catval) catlabel

Parameters

filename	raster map name
drow
dcol
catstr	category string

Returns: 1 on success; 0 on failure

Definition at line 827 of file Gs3.c.

References buf, fd, G_allocate_c_raster_buf(), G_allocate_d_raster_buf(), G_close_cell(), G_find_cell2(), G_free(), G_free_cats(), G_get_c_raster_cat(), G_get_c_raster_row(), G_get_d_raster_cat(), G_get_d_raster_row(), G_get_raster_map_type(), G_is_c_null_value(), G_is_d_null_value(), G_open_cell_old(), G_read_cats(), G_warning(), NULL, and sprintf().

Referenced by GS_get_cat_at_xy().

int Gs_load_3dview	(	const char *	vname,
		geoview *	gv,
		geodisplay *	gd,
		struct Cell_head *	w,
		geosurf *	defsurf
	)

Load 3dview.

Parameters

vname	view name
gv	pointer to geoview struct
gd	pointer to geodisplay struct
w	current window
defsurf	default geosurf struct

Returns: 1

Definition at line 1004 of file Gs3.c.

References FROM, G_find_file2(), G_get_3dview(), G_warning(), GS_alldraw_wire(), GS_moveto_real(), GS_set_focus(), GS_set_fov(), GS_set_global_exag(), GS_set_twist(), GS_setall_drawmode(), GS_setall_drawres(), int, NULL, X, and Y.

Referenced by GS_load_3dview().

int Gs_loadmap_as_bitmap	(	struct Cell_head *	wind,
		const char *	map_name,
		struct BM *	buff
	)

Load raster map as integer map.

Calling function must have already allocated space in buff for struct BM of wind->rows & wind->cols.

This routine simply loads the map into the bitmap by repetitve calls to get_map_row. Any value other than 0 in the map will set the bitmap. (may want to change later to allow specific value to set)

Changed to use null.

Parameters

	wind	current window
	map_name	raster map name
[out]	buff	data buffer

Returns: 1 on success; -1 on failure

Definition at line 559 of file Gs3.c.

References BM_set(), G_allocate_null_buf(), G_close_cell(), G_debug(), G_fatal_error(), G_find_cell2(), G_free(), G_fully_qualified_name(), G_get_null_value_row(), G_message(), G_open_cell_old(), and G_warning().

Referenced by GS_load_att_map().

int Gs_loadmap_as_char	(	struct Cell_head *	wind,
		const char *	map_name,
		unsigned char *	buff,
		struct BM *	nullmap,
		int *	has_null
	)

Load raster map as integer map.

Calling function must have already allocated space in buff for wind->rows * wind->cols unsigned chars.

This routine simply loads the map into a 2d array by repetitve calls to get_map_row.

Since signs of chars can be tricky, we only load positive chars between 0-255.

Todo:: fn body Gs_loadmap_as_float()

Parameters

	wind	current window
	map_name	raster map name
[out]	buff	data buffer
[out]	nullmap	null map buffer
[out]	has_null	indicates if raster map contains null-data

Returns: 1 on success; -1 on failure; -2 if read ok, but 1 or more values were too large (small) to fit into an unsigned char. (in which case the max (min) char is used)

Definition at line 449 of file Gs3.c.

References BM_set(), G_allocate_null_buf(), G_close_cell(), G_debug(), G_fatal_error(), G_find_cell2(), G_free(), G_fully_qualified_name(), G_get_c_raster_row(), G_get_null_value_row(), G_message(), G_open_cell_old(), G_percent(), and G_warning().

Referenced by GS_load_att_map().

int Gs_loadmap_as_float	(	struct Cell_head *	wind,
		const char *	map_name,
		float *	buff,
		struct BM *	nullmap,
		int *	has_null
	)

Load raster map as floating point map.

Calling function must have already allocated space in buff for wind->rows * wind->cols floats.

This routine simply loads the map into a 2d array by repetitve calls to get_f_raster_row.

Parameters

	wind	current window
	map_name	raster map name
[out]	buff	data buffer
[out]	nullmap	null map buffer
[out]	has_null	indicates if raster map contains null-data

Returns: 1 on success; 0 on failure

Definition at line 114 of file Gs3.c.

References BM_set(), G_allocate_null_buf(), G_close_cell(), G_debug(), G_fatal_error(), G_find_cell2(), G_free(), G_fully_qualified_name(), G_get_f_raster_row(), G_get_null_value_row(), G_is_f_null_value(), G_message(), G_open_cell_old(), G_percent(), and G_warning().

Referenced by GS_load_att_map().

int Gs_loadmap_as_int	(	struct Cell_head *	wind,
		const char *	map_name,
		int *	buff,
		struct BM *	nullmap,
		int *	has_null
	)

Load raster map as integer map.

Calling function must have already allocated space in buff for wind->rows * wind->cols floats.

This routine simply loads the map into a 2d array by repetitve calls to get_f_raster_row.

Todo:: fn body of Gs_loadmap_as_float()

Parameters

	wind	current window
	map_name	raster map name
[out]	buff	data buffer
[out]	nullmap	null map buffer
[out]	has_null	indicates if raster map contains null-data

Returns: 1 on success; 0 on failure

Definition at line 189 of file Gs3.c.

References BM_set(), G_allocate_null_buf(), G_close_cell(), G_debug(), G_fatal_error(), G_find_cell2(), G_free(), G_fully_qualified_name(), G_get_c_raster_row(), G_get_null_value_row(), G_message(), G_open_cell_old(), G_percent(), and G_warning().

Referenced by GS_load_att_map().

int Gs_loadmap_as_short	(	struct Cell_head *	wind,
		const char *	map_name,
		short *	buff,
		struct BM *	nullmap,
		int *	has_null
	)

Load raster map as integer map.

Calling function must have already allocated space in buff for wind->rows * wind->cols shorts.

This routine simply loads the map into a 2d array by repetitve calls to get_map_row.

Parameters

	wind	current window
	map_name	raster map name
[out]	buff	data buffer
[out]	nullmap	null map buffer
[out]	has_null	indicates if raster map contains null-data

Returns: 1 on success; -1 on failure,; -2 if read ok, but 1 or more values were too large (small) to fit into a short (in which case the max (min) short is used)

Definition at line 334 of file Gs3.c.

References BM_set(), G_allocate_null_buf(), G_close_cell(), G_debug(), G_fatal_error(), G_find_cell2(), G_free(), G_fully_qualified_name(), G_get_c_raster_row(), G_get_null_value_row(), G_message(), G_open_cell_old(), G_percent(), and G_warning().

Referenced by GS_load_att_map().

int Gs_numtype	(	const char *	filename,
		int *	negflag
	)

Get map data type.

Parameters

filename	raster map name
negflag

Returns: -1 if map is integer and G_read_range() fails; data type (ARRY_*)

Definition at line 252 of file Gs3.c.

References first, G_debug(), G_find_cell2(), G_get_range_min_max(), G_raster_map_is_fp(), G_read_range(), G_warning(), max, and min.

Referenced by GS_load_att_map().

void Gs_pack_colors	(	const char *	filename,
		int *	buff,
		int	rows,
		int	cols
	)

Pack color table.

Passed an array of 32 bit ints that is converted from cell values to packed colors (0xbbggrr)

Parameters

filename	raster map name
buff
rows	number of rows
cols	number of cols

Definition at line 687 of file Gs3.c.

References b, buff, dialogs::cols, g, G_find_cell2(), G_free(), G_free_colors(), G_fully_qualified_name(), G_lookup_colors(), G_message(), G_percent(), G_read_colors(), G_warning(), NO_DATA_COL, r, and main::set.

Referenced by GS_load_att_map().

void Gs_pack_colors_float	(	const char *	filename,
		float *	fbuf,
		int *	ibuf,
		int	rows,
		int	cols
	)

Pack color table (floating-point map)

Passed a array of floats that will be converted from cell values to packed colors (0xbbggrr) and float to int Floating point data not freed here, use: gsds_free_data_buff(id, ATTY_FLOAT)

Parameters

filename	raster map name
fbuf
ibuf
rows	number of rows
cols	number of cols

Definition at line 756 of file Gs3.c.

References b, dialogs::cols, g, G_find_cell2(), G_free(), G_free_colors(), G_fully_qualified_name(), G_lookup_f_raster_colors(), G_message(), G_percent(), G_read_colors(), G_warning(), NO_DATA_COL, r, and main::set.

Referenced by GS_load_att_map().

int Gs_save_3dview	(	const char *	vname,
		geoview *	gv,
		geodisplay *	gd,
		struct Cell_head *	w,
		geosurf *	defsurf
	)

Save 3dview.

Parameters

vname	view name
gv	pointer to geoview struct
gd	pointer to geodisplay struct
w	current window
defsurf	default geosurf struct

Returns: -1 on error; ?

Definition at line 906 of file Gs3.c.

References FROM, G_get_3dview_defaults(), G_mapset(), G_put_3dview(), GS_get_zrange(), GS_v3eq(), GS_v3mult(), gsd_model2real(), NULL, X, and Y.

Referenced by GS_save_3dview().

int Gs_update_attrange	(	geosurf *	gs,
		int	desc
	)

Update no_zero ranges for attribute (actually no_null now)

Parameters

gs	pointer to geosurf struct
desc	attribute id (descriptor)

Returns: -1 on error; 1 on success

Definition at line 1140 of file Gs3.c.

References G_debug(), gs_get_att_src(), gsds_get_changed(), gsds_get_typbuff(), INIT_MINMAX, max, min, NULL, SET_MINMAX, and tools::size.

Referenced by GS_load_att_map(), gs_set_att_const(), and GS_set_att_const().

Macros

Typedefs

Functions

Detailed Description

Macro Definition Documentation

Typedef Documentation

Function Documentation