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pt-plot.h
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2000-01-15
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/*
Copyright (C) 1996, 1997 John W. Eaton
This file is part of Octave.
Octave 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; either version 2, or (at your option) any
later version.
Octave 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.
You should have received a copy of the GNU General Public License
along with Octave; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if !defined (octave_tree_plot_h)
#define octave_tree_plot_h 1
#if defined (__GNUG__)
#pragma interface
#endif
class ostream;
class ostrstream;
class tree_expression;
class tree_plot_command;
class plot_limits;
class plot_range;
class subplot_using;
class subplot_style;
class subplot_axes;
class subplot;
class subplot_list;
class tree_walker;
#include <csignal>
#include <string>
#include <SLList.h>
#include "dColVector.h"
#include "pt-cmd.h"
class
tree_plot_command : public tree_command
{
public:
tree_plot_command (subplot_list *plt = 0, plot_limits *rng = 0, int nd = 0)
: tree_command (), ndim (nd), range (rng), plot_list (plt) { }
~tree_plot_command (void);
void eval (void);
int num_dimensions (void) { return ndim; }
plot_limits *limits (void) { return range; }
subplot_list *subplots (void) { return plot_list; }
void accept (tree_walker& tw);
private:
// The number of dimensions. 1 indicates a replot command.
int ndim;
// The data ranges for the plot.
plot_limits *range;
// The list of plots for this plot command. For example, the
// command "plot sin(x), cos(x)" has two subplot commands.
subplot_list *plot_list;
// No copying!
tree_plot_command (const tree_plot_command&);
tree_plot_command& operator = (const tree_plot_command&);
};
class
plot_limits
{
public:
plot_limits (plot_range *xlim = 0, plot_range *ylim = 0,
plot_range *zlim = 0)
: x_range (xlim), y_range (ylim), z_range (zlim) { }
~plot_limits (void);
void print (int ndim, ostrstream& plot_buf);
plot_range *x_limits (void) { return x_range; }
plot_range *y_limits (void) { return y_range; }
plot_range *z_limits (void) { return z_range; }
void accept (tree_walker& tw);
private:
// Specified limits of the x, y, and z axes we should display for
// this plot.
plot_range *x_range;
plot_range *y_range;
plot_range *z_range;
// No copying!
plot_limits (const plot_limits&);
plot_limits& operator = (const plot_limits&);
};
class
plot_range
{
public:
plot_range (tree_expression *l = 0, tree_expression *u = 0)
: lower (l), upper (u) { }
~plot_range (void);
void print (ostrstream& plot_buf);
tree_expression *lower_bound (void) { return lower; }
tree_expression *upper_bound (void) { return upper; }
void accept (tree_walker& tw);
private:
// A range can specify a lower or upper bound or both. If neither
// is specified, the range to display is determined from the data.
tree_expression *lower;
tree_expression *upper;
// No copying!
plot_range (const plot_range&);
plot_range& operator = (const plot_range&);
};
class
subplot_using
{
public:
subplot_using (tree_expression *fmt = 0)
: qual_count (0), scanf_fmt (fmt), val (4, -1)
{
x[0] = x[1] = x[2] = x[3] = 0;
}
~subplot_using (void);
subplot_using *set_format (tree_expression *fmt)
{
scanf_fmt = fmt;
return this;
}
subplot_using *add_qualifier (tree_expression *t)
{
if (qual_count < 4)
x[qual_count] = t;
qual_count++;
return this;
}
int eval (int ndim, int n_max);
ColumnVector values (int ndim, int n_max = 0);
int print (int ndim, int n_max, ostrstream& plot_buf);
int qualifier_count (void) { return qual_count; }
tree_expression **qualifiers (void) { return x; }
tree_expression *scanf_format (void) { return scanf_fmt; }
void accept (tree_walker& tw);
private:
// The number of using qualifiers (in "using 1:2", 1 and 2 are the
// qualifiers).
int qual_count;
// An optional scanf-style format. This is parsed and stored but
// not currently used.
tree_expression *scanf_fmt;
// This is a cache for evaluated versions of the qualifiers stored
// in x.
ColumnVector val;
// A vector to hold using qualifiers.
tree_expression *x[4];
// No copying!
subplot_using (const subplot_using&);
subplot_using& operator = (const subplot_using&);
};
class
subplot_style
{
public:
subplot_style (const string& s = string (),
tree_expression *lt = 0, tree_expression *pt = 0)
: sp_style (s), sp_linetype (lt), sp_pointtype (pt) { }
~subplot_style (void);
int print (ostrstream& plot_buf);
bool columns_ok (int nc);
string style (void) { return sp_style; }
tree_expression *linetype (void) { return sp_linetype; }
tree_expression *pointtype (void) { return sp_pointtype; }
void accept (tree_walker& tw);
private:
// The style we are using: `lines', `points', etc.
string sp_style;
// The number of the line type to use.
tree_expression *sp_linetype;
// The number of the point type to use.
tree_expression *sp_pointtype;
// No copying!
subplot_style (const subplot_style&);
subplot_style& operator = (const subplot_style&);
};
class
subplot_axes
{
public:
subplot_axes (const string& s = string ())
: sp_axes (s) { }
~subplot_axes (void) { }
int print (ostrstream& plot_buf);
string axes (void) { return sp_axes; }
void accept (tree_walker& tw);
private:
// The axes we are using: `x1y1', `x1y2', etc.
string sp_axes;
// No copying!
subplot_axes (const subplot_axes&);
subplot_axes& operator = (const subplot_axes&);
};
class
subplot
{
public:
subplot (tree_expression *data = 0)
: sp_plot_data (data), sp_using_clause (0), sp_title_clause (0),
sp_style_clause (0), sp_axes_clause (0) { }
~subplot (void);
subplot *add_data (tree_expression *data)
{
sp_plot_data = data;
return this;
}
subplot *add_clause (subplot_using *u)
{
if (! sp_using_clause)
{
sp_using_clause = u;
return this;
}
else
return 0;
}
subplot *add_clause (tree_expression *t)
{
if (! sp_title_clause)
{
sp_title_clause = t;
return this;
}
else
return 0;
}
subplot *add_clause (subplot_style *s)
{
if (! sp_style_clause)
{
sp_style_clause = s;
return this;
}
else
return 0;
}
subplot *add_clause (subplot_axes *a)
{
if (! sp_axes_clause)
{
sp_axes_clause = a;
return this;
}
else
return 0;
}
octave_value extract_plot_data (int ndim, octave_value& data);
int handle_plot_data (int ndim, ostrstream& plot_buf);
int print (int ndim, ostrstream& plot_buf);
tree_expression *plot_data (void) { return sp_plot_data; }
subplot_using *using_clause (void) { return sp_using_clause; }
tree_expression *title_clause (void) { return sp_title_clause; }
subplot_style *style_clause (void) { return sp_style_clause; }
subplot_axes *axes_clause (void) { return sp_axes_clause; }
void accept (tree_walker& tw);
private:
// The data to plot.
tree_expression *sp_plot_data;
// The `using' option
subplot_using *sp_using_clause;
// The `title' option
tree_expression *sp_title_clause;
// The `style' option
subplot_style *sp_style_clause;
// The `axes' option
subplot_axes *sp_axes_clause;
// No copying!
subplot (const subplot&);
subplot& operator = (const subplot&);
};
class
subplot_list : public SLList<subplot *>
{
public:
subplot_list (void)
: SLList<subplot *> () { }
subplot_list (subplot *t)
: SLList<subplot *> () { append (t); }
~subplot_list (void);
int print (int ndim, ostrstream& plot_buf);
void accept (tree_walker& tw);
private:
// No copying!
subplot_list (const subplot_list&);
subplot_list& operator = (const subplot_list&);
};
extern string save_in_tmp_file (octave_value& t, int ndim = 2,
bool parametric = false);
extern void mark_for_deletion (const string&);
extern void cleanup_tmp_files (void);
extern void close_plot_stream (void);
extern void do_external_plotter_cd (const string& newdir);
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/