/usr/include/gmt/gmt_colors.h is in libgmt-dev 4.5.12-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 | /*--------------------------------------------------------------------
* $Id: gmt_colors.h 10173 2014-01-01 09:52:34Z pwessel $
*
* Copyright (c) 1991-2014 by P. Wessel and W. H. F. Smith
* See LICENSE.TXT file for copying and redistribution conditions.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 or any later version.
*
* This program 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 General Public License for more details.
*
* Contact info: gmt.soest.hawaii.edu
*--------------------------------------------------------------------*/
/*
* Miscellaneous definitions and structures related to color.
*
* Author: Paul Wessel
* Date: 10-AUG-1995
* Revised: 10-MAY-1998
* 29-APR-2000 PW: Sped-up calculations of colors
* Version: 4.1.x
*/
#ifndef _GMT_COLORS_H
#define _GMT_COLORS_H
#define GMT_READ_RGB 1
#define GMT_USE_RGB 2
#define GMT_RGB 3
#define GMT_READ_HSV 4
#define GMT_USE_HSV 8
#define GMT_HSV 12
#define GMT_READ_CMYK 16
#define GMT_USE_CMYK 32
#define GMT_CMYK 48
#define GMT_BGD 0
#define GMT_FGD 1
#define GMT_NAN 2
/* How B/W TV's convert RGB to Gray */
#define GMT_YIQ(rgb) ((int)irint (0.299 * (rgb[0]) + 0.587 * (rgb[1]) + 0.114 * (rgb[2])))
/* Determine if a RGB combination is grayshade */
#define GMT_is_gray(r,g,b) ((r) == (g) && (r) == (b))
/* Determine if a R(=G=B) gray combination is in fact B/W */
#define GMT_is_bw(r) ((r) == 0 || (r) == 255)
/* Determine if there is any fill at all */
#define GMT_is_nofill(F) (F->rgb[0] == -1 && !F->use_pattern)
/* Here is the definition of the GMT_lut structure that is used in programs
* that deals with coloring of grids.
*/
struct GMT_LUT {
double z_low, z_high, i_dz;
int rgb_low[3], rgb_high[3], rgb_diff[3];
double hsv_low[3], hsv_high[3], hsv_diff[3];
GMT_LONG annot;
GMT_LONG skip;
struct GMT_FILL *fill; /* Use by grdview */
char *label; /* For non-number labels */
};
struct GMT_BFN_COLOR { /* For back-, fore-, and nan-colors */
int rgb[3];
double hsv[3];
GMT_LONG skip;
struct GMT_FILL *fill;
};
EXTERN_MSC struct GMT_HASH GMT_rgb_hashnode[GMT_N_COLOR_NAMES]; /* Used to translate colornames to r/g/b */
EXTERN_MSC struct GMT_LUT *GMT_lut;
EXTERN_MSC struct GMT_BFN_COLOR GMT_bfn[3];
EXTERN_MSC GMT_LONG GMT_n_colors;
EXTERN_MSC GMT_LONG GMT_cpt_flags;
EXTERN_MSC GMT_LONG GMT_gray; /* TRUE if only grayshades are used */
EXTERN_MSC GMT_LONG GMT_b_and_w; /* TRUE if only black OR white is used */
EXTERN_MSC GMT_LONG GMT_continuous; /* TRUE if colors change continuously within slice */
EXTERN_MSC GMT_LONG GMT_cpt_pattern; /* TRUE if cpt file contains any patterns */
EXTERN_MSC GMT_LONG GMT_cpt_skip; /* TRUE if current z-slice is to be skipped */
#ifdef GMT_CPT2
EXTERN_MSC GMT_LONG GMT_categorical; /* TRUE if the CPT applies to categorical data */
#endif
EXTERN_MSC void GMT_sample_cpt (double z[], GMT_LONG nz, GMT_LONG continuous, GMT_LONG reverse, GMT_LONG log_mode);
#endif /* _GMT_COLORS_H */
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