#include <grass/gis.h>
#include "G.h"
Go to the source code of this file.
Functions | |
int | G_get_raster_row_colors (int fd, int row, struct Colors *colors, unsigned char *red, unsigned char *grn, unsigned char *blu, unsigned char *nul) |
Reads a row of raster data and converts it to red, green and blue components according to the colors parameter. This provides a convenient way to treat a raster layer as a color image without having to explictly cater for each of CELL , FCELL and DCELL types. |
int G_get_raster_row_colors | ( | int | fd, |
int | row, | ||
struct Colors * | colors, | ||
unsigned char * | red, | ||
unsigned char * | grn, | ||
unsigned char * | blu, | ||
unsigned char * | nul | ||
) |
Reads a row of raster data and converts it to red, green and blue components according to the colors parameter. This provides a convenient way to treat a raster layer as a color image without having to explictly cater for each of CELL
, FCELL
and DCELL
types.
fd | |
row | |
colors | |
red | |
grn | |
blu | |
nul |
Definition at line 24 of file get_row_colr.c.
References G__::fileinfo, G_get_raster_row(), G_incr_void_ptr(), G_is_null_value(), G_lookup_raster_colors(), G_raster_size(), fileinfo::map_type, and G__::window.