/* GNUPLOT - plot2d.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_PLOT2D_H
# define GNUPLOT_PLOT2D_H

#include "syscfg.h"
#include "axis.h"
#include "gp_types.h"
#include "gadgets.h"

/* This allows a natural interpretation of providing only a single column in 'using' */
#define default_smooth_weight(option) \
 (option == SMOOTH_BINS || option == SMOOTH_KDENSITY || option == SMOOTH_FREQUENCY)

/* Variables of plot2d.c needed by other modules: */

extern struct curve_points *first_plot;

#ifdef USE_POLAR_GRID
typedef struct pgrid {
    t_dgrid3d_mode mode;
    int theta_segments;
    int r_segments;
    int norm_q;
    TBOOLEAN kdensity;
    double scale;
    double rmin;
    double rmax;
} pgrid;
extern pgrid polar_grid;
extern pgrid default_polar_grid;
#endif

/* prototypes from plot2d.c */

void plotrequest(void);
void refresh_bounds(struct curve_points *first_plot, int nplots);
void polar_range_fiddling(struct axis *xaxis, struct axis *yaxis);

/* internal and external variables */
void cp_free(struct curve_points *cp);
void cp_extend(struct curve_points *cp, int num);

struct text_label *store_label(struct text_label *, struct coordinate *,
				int i, char * string, double colorval);
void parse_plot_title(struct curve_points *this_plot, 
			char *xtitle, char *ytitle, TBOOLEAN *set_title);
void reevaluate_plot_title(struct curve_points *this_plot);

#endif /* GNUPLOT_PLOT2D_H */