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interpol.h
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64 lines (56 loc) · 2.61 KB
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/* GNUPLOT - interpol.h */
/*[
* Copyright 1999, 2004 Thomas Williams, Colin Kelley
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
]*/
#ifndef GNUPLOT_INTERPOL_H
# define GNUPLOT_INTERPOL_H
#include "syscfg.h"
#include "graphics.h"
#include "graph3d.h"
/* Variables of interpol.c needed by other modules: */
/* Prototypes of functions exported by interpol.c */
void gen_interp(struct curve_points *plot);
void gen_interp_unwrap(struct curve_points *plot);
void gen_interp_frequency(struct curve_points *plot);
void sort_points(struct curve_points *plot);
void zsort_points(struct curve_points *plot);
void zrange_points(struct curve_points *plot);
void cp_implode(struct curve_points *cp);
int next_curve(struct curve_points * plot, int *curve_start);
int num_curves(struct curve_points * plot);
#define spline_coeff_size 4
typedef double spline_coeff[spline_coeff_size];
spline_coeff *cp_approx_spline(struct coordinate *first_point, int num_points,
int path_dim, int spline_dim, int w_dim);
spline_coeff *cp_tridiag(struct coordinate *first_point, int num_points,
int path_dim, int spline_dim);
int compare_x(SORTFUNC_ARGS p1, SORTFUNC_ARGS p2);
int compare_z(SORTFUNC_ARGS p1, SORTFUNC_ARGS p2);
int compare_xyz(SORTFUNC_ARGS p1, SORTFUNC_ARGS p2);
#endif /* GNUPLOT_INTERPOL_H */