/usr/include/gmt/gmt_decorate.h is in libgmt-dev 5.4.3+dfsg-1.
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* $Id: gmt_decorate.h 19521 2017-12-27 22:38:24Z pwessel $
*
* Copyright (c) 1991-2018 by P. Wessel, W. H. F. Smith, R. Scharroo, J. Luis and F. Wobbe
* 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 Lesser General Public License as published by
* the Free Software Foundation; version 3 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 Lesser General Public License for more details.
*
* Contact info: gmt.soest.hawaii.edu
*--------------------------------------------------------------------*/
/* gmt_decorate.h - structures and variables needed for decorating lines.
Author: Paul Wessel
Date: 1 OCT 2015
Version: 5 API
This include file defines structures and functions used.
*/
/*!
* \file gmt_decorate.h
* \brief Structures and variables needed for decorating lines.
*/
#ifndef _GMT_DECORATE_H
#define _GMT_DECORATE_H
/*! Various settings for symbol placements along lines */
enum GMT_enum_decorate {
GMT_DECORATE_NONE = 0, /* No contour/line crossing */
GMT_DECORATE_XLINE, /* Place symbols where crossing straight lines (via key points) */
GMT_DECORATE_XCURVE}; /* Place symbols where crossing arbitrary lines (via file) */
struct GMT_DECORATE {
/* Control section */
double symbol_dist_spacing; /* Min distance between symbols */
double symbol_dist_frac; /* Fraction of Min distance between symbols offset for closed lines [0.25] */
double min_dist; /* Do not place symbols closer than this value [0] */
double slop; /* slop distance in being close to points */
double *f_xy[2]; /* Array for fixed points */
double symbol_angle; /* For fixed-angle symbols only */
double nudge[2]; /* Shift between calculated and desired symbols placement */
unsigned int line_type; /* Kind of line: contour (1) or line (0) */
unsigned int dist_kind; /* What kind of distance [0 = xy, 1 = map ] */
unsigned int half_width; /* Number of points to use in smoothing the angle [10/2] */
unsigned int n_cont; /* Number of symbols per segment */
enum GMT_enum_decorate crossing; /* 1 for crossing simple lines, 2 for file with crossing lines */
unsigned int nx; /* Number of crossovers at any time */
unsigned int f_n; /* Number of such points */
unsigned int nudge_flag; /* 0 if off, 1 if nudging relative to x/y axis, 2 if following local line coordinate system */
unsigned int angle_type; /* 0 = line-parallel, 1 = line-normal, 2 = fixed angle */
int number_placement; /* How the n_cont symbols are distributed [-1/0/+1]*/
bool isolate; /* true if we have a limit on how close symbols may appear (see below) */
bool segmentize; /* true if we should segmentize input lines before plotting */
bool spacing; /* true if we have spacing constraints to apply */
bool number; /* true if we have constraints on the number of symbols to apply */
bool do_interpolate; /* true if we must resample the crossing lines */
bool fixed; /* true if we chose fixed positions */
bool debug; /* true of we want to draw helper lines/points */
char line_name[16]; /* Name of line: contour or line */
char file[GMT_BUFSIZ]; /* File with crossing lines, if specified */
char option[GMT_BUFSIZ]; /* Copy of the option string */
char size[GMT_LEN64]; /* The symbol size */
char fill[GMT_LEN64]; /* The symbol fill */
char pen[GMT_LEN64]; /* The symbol outline pen */
char symbol_code[2]; /* The symbol code only as a null-terminated string */
char flag; /* Char for the option key */
struct GMT_DATASET *X; /* Dataset with list of structures with crossing-line coordinates */
struct GMT_XSEGMENT *ylist_XP; /* Sorted y-segments for crossing-lines */
struct GMT_XSEGMENT *ylist; /* y-indices sorted in increasing order */
struct GMT_XOVER XC; /* Structure with resulting crossovers */
};
#endif /* _GMT_DECORATE_H */
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