GRASS GIS 8 Programmer's Manual 8.4.1(2025)-45ca3179ab
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gvl3.c File Reference

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

#include <grass/gis.h>
#include <grass/raster.h>
#include <grass/raster3d.h>
#include <grass/ogsf.h>
#include <grass/glocale.h>
Include dependency graph for gvl3.c:

Go to the source code of this file.

Functions

int Gvl_load_colors_data (void **color_data, const char *name)
 Load color table.
 
int Gvl_unload_colors_data (void *color_data)
 Unload color table.
 
int Gvl_get_color_for_value (void *color_data, float *value)
 Get color for value.
 

Detailed Description

OGSF library - loading volumes (lower level functions)

GRASS OpenGL gsurf OGSF Library

(C) 1999-2008 by the GRASS Development Team

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

Author
Tomas Paudits (December 2003)
Doxygenized by Martin Landa <landa.martin gmail.com> (May 2008)

Definition in file gvl3.c.

Function Documentation

◆ Gvl_get_color_for_value()

int Gvl_get_color_for_value ( void * color_data,
float * value )

Get color for value.

Parameters
color_datacolor data value
valuedata value
Returns
color value

Definition at line 82 of file gvl3.c.

References b, g, and r.

Referenced by iso_calc_cube(), and slice_calc().

◆ Gvl_load_colors_data()

int Gvl_load_colors_data ( void ** color_data,
const char * name )

Load color table.

Parameters
[out]color_datacolor data buffer
name3D raster map name
Returns
-1 on failure
1 on success

Definition at line 34 of file gvl3.c.

References G_find_raster3d(), G_free(), G_warning(), name, and NULL.

Referenced by gvl_isosurf_set_att_map(), and gvl_slices_calc().

◆ Gvl_unload_colors_data()

int Gvl_unload_colors_data ( void * color_data)

Unload color table.

Parameters
color_datacolor data buffer
Returns
-1 on failure
1 on success

Definition at line 65 of file gvl3.c.

References G_free().

Referenced by gvl_isosurf_set_att_src(), and gvl_slices_calc().