color_rule_get.c File Reference

Raster Library - Get color rules. More...

#include <grass/gis.h>
#include <grass/raster.h>

Include dependency graph for color_rule_get.c:

Go to the source code of this file.

Functions
int	Rast_colors_count (const struct Colors *colors)
	Get both modular and fixed rules count. More...
int	Rast_get_fp_color_rule (DCELL *val1, unsigned char *r1, unsigned char *g1, unsigned char *b1, DCELL *val2, unsigned char *r2, unsigned char *g2, unsigned char *b2, const struct Colors *colors, int rule)
	Get color rule from both modular and fixed rules. More...

Detailed Description

Raster Library - Get color rules.

(C) 2001-2009 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

Original author CERL

Definition in file color_rule_get.c.

Function Documentation

Rast_colors_count()

int Rast_colors_count

(

const struct Colors *

colors

)

Get both modular and fixed rules count.

Parameters

colors

pointer to color table structure

Returns

number of rules in color table

Definition at line 24 of file color_rule_get.c.

Rast_get_fp_color_rule()

int Rast_get_fp_color_rule	(	DCELL *	val1,
		unsigned char *	r1,
		unsigned char *	g1,
		unsigned char *	b1,
		DCELL *	val2,
		unsigned char *	r2,
		unsigned char *	g2,
		unsigned char *	b2,
		const struct Colors *	colors,
		int	rule
	)

Get color rule from both modular and fixed rules.

Rules are returned in the order as stored in the table (i.e. unexpected, high values first)

Parameters

	val1	color value
[out]	r1,g1,b1	color value
	val2	color value
[out]	r2,g2,b2	color value
	colors	pointer to color table structure
	rule	rule index from 0 to G_color_count()-1

Returns

0 success

1 index out of range

Definition at line 66 of file color_rule_get.c.