1 /*****************************************************************************
5 ** Purpose: Header file for EZplot library
7 ** This is part of the CTSim program
8 ** Copyright (C) 1983-2000 Kevin Rosenberg
10 ** $Id: ezplot.h,v 1.20 2000/12/23 18:12:35 kevin Exp $
12 ** This program is free software; you can redistribute it and/or modify
13 ** it under the terms of the GNU General Public License (version 2) as
14 ** published by the Free Software Foundation.
16 ** This program is distributed in the hope that it will be useful,
17 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ** GNU General Public License for more details.
21 ** You should have received a copy of the GNU General Public License
22 ** along with this program; if not, write to the Free Software
23 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 ******************************************************************************/
34 #include "ctsupport.h"
47 std::string m_sLegend;
49 EZPlotCurve (const double* x, const double* y, int n, int color, int linestyle, int symbol, int sumbolFreq, const std::string& legend);
54 //----------------------------------------------------------------------
56 //----------------------------------------------------------------------
60 LINEAR = 1, // linear axis
61 LOG, // logrithmic axis
62 NOAXIS, // don't plot axis
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95 INSIDE = 1, // values of o_legendbox
101 struct KeywordCodeTable {
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106 /*-----------------------------------------------------------------------------
110 * i_ Internal variable
113 * Normal variable that is user modifiable
114 * These variables must always have a valid value
116 * Variables controlling devices
117 * clr_ Color variable
118 * Holds a color value
119 * c_ Character string variable
120 * Contains a character string
122 * User modifiable variable associated with the set variable (s_)
123 * These variables do not always have a valid value
124 * These variables change assumption EZPLOT makes about the plot
126 * TRUE if associated value variable (v_) has been set by the user
127 *---------------------------------------------------------------------------*/
131 typedef std::vector<EZPlotCurve*>::iterator EZPlotCurveIterator;
132 typedef std::vector<EZPlotCurve*>::const_iterator EZPlotCurveConstIterator;
137 //----------------------------------------------------------------------
139 //----------------------------------------------------------------------
214 static const struct KeywordCodeTable m_sKeywords[];
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215 static const int NKEYS;
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217 std::vector<class EZPlotCurve*> m_vecCurves;
220 int clr_axis; // color of all axis lines
221 int clr_title; // color of main title
222 int clr_label; // color of axis labels
223 int clr_legend; // color of legend box
224 int clr_grid; // color of grid lines
225 int clr_number; // color of axis number labels
228 double o_xporigin, o_yporigin; // origin of plot frame in NDC
229 double o_xlength, o_ylength; // length of plot frame in NDC
231 std::string c_xlabel; // label for x axis
232 std::string c_ylabel; // label for y axis
233 std::string c_title; // title to print above graph
234 std::string c_legend;; // current legend specified
236 int o_linestyle, o_color; // style to use for curves all subsequent curves to EZPLOT
237 int o_xaxis, o_yaxis; // Specifies where axis & labels are drawn
238 bool o_grid; // Flag to draw a grid at major ticks
239 bool o_box; // Flag to draw a box around the graph
241 int o_xticks, o_yticks; // direction to draw tick marks
242 bool o_xtlabel, o_ytlabel; // TRUE if label tick marks
244 int o_xmajortick, o_ymajortick; // number of major ticks to draw
245 int o_xminortick, o_yminortick; // number of minor ticks between major ticks
247 int o_symbol; // Symbol type, (0 = no symbol)
248 int o_symfreq; // frequency to draw symbols at curve points
250 int o_legendbox; // controls whether legend is inside or outside of the axis extents
251 int o_tag; // controls whether to draw tag at end of axes
253 // VALUE & SET variables
254 double v_xmin, v_xmax, v_ymin, v_ymax; // user supplied axis endpoints
255 bool s_xmin, s_xmax, s_ymin, s_ymax; // TRUE is endpoint has been set
256 double v_xtitle, v_ytitle; // NDC position to plot title
257 bool s_xtitle, s_ytitle; // TRUE if set position for title
258 double v_xcross, v_ycross; // position that axes cross
259 bool s_xcross, s_ycross; // TRUE if set axes cross position
260 double v_xlegend, v_ylegend; // upper-left position of legend box in NDC
261 bool s_xlegend, s_ylegend; // TRUE if set position of legend box
262 int v_lxfrac, v_lyfrac; // number of digits to right of decimal place
263 bool s_lxfrac, s_lyfrac; // TRUE if set number of fractional digits
264 double v_textsize; // size of text in NDC
265 bool s_textsize; // TRUE if user set size of text
268 double charheight; // Height of characters in NDC
269 double charwidth; // Height of characters in NDC
270 double xp_min, xp_max, yp_min, yp_max; // boundry of plot frame in NDC
271 double xa_min, xa_max, ya_min, ya_max; // extent of axes in NDC
272 double xgw_min, xgw_max, ygw_min, ygw_max; // boundary of graph in input coords
273 double xgn_min, xgn_max, ygn_min, ygn_max; // boundy of graph in NDC
274 double xt_min, xt_max, yt_min, yt_max; // boundary of axis ticks
275 double xl_min, xl_max, yl_min, yl_max; // boundary of legend box
276 double title_row; // y-coord of title row
277 double xtl_ofs; // Offset y-coord of x tick labels from axis
278 double ytl_ofs; // Offset x-coord of y tick labels from axis
279 double xlbl_row; // row of x label in world coord
280 double ylbl_col; // column of y label in world coord
281 double xw_tickinc, yw_tickinc; // increment between major ticks in WC
282 double xn_tickinc, yn_tickinc; // increment between major ticks in NDC
283 int x_nint, y_nint; // number of intervals along x & y axes
284 int x_fldwid, x_frac; // numeric field sizes & number of digits
285 int y_fldwid, y_frac; // in fraction of number, used for printf()
286 double xtl_wid, ytl_wid; // length of ticks labels in NDC
287 double tl_height; // height of tick labels in NDC
288 char x_numfmt[20]; // format to print x tick labels
289 char y_numfmt[20]; // format to print y tick labels
291 double m_dVP_xmin, m_dVP_ymin;
292 double m_dVP_xmax, m_dVP_ymax;
293 double m_dVP_xscale, m_dVP_yscale;
294 double m_xWorldScale, m_yWorldScale;
297 void symbol (int sym, double symwidth, double symheight);
298 void make_numfmt(char *fmtstr, int *fldwid, int *nfrac, double min, double max, int nint);
299 int axis_scale (double min, double max, int nint, double *minp, double *maxp, int *nintp);
305 bool ezcmd (const char const *comm);
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307 void bad_option(char *opt);
308 void initPlotSettings();
310 static void initkw(void);
312 static bool ezset_initialized;
314 double convertWorldToNDC_X (double x)
315 { return xgn_min + (x - xgw_min) * m_xWorldScale; }
317 double convertWorldToNDC_Y (double y)
318 { return ygn_min + (y - ygw_min) * m_yWorldScale; }
324 bool ezset (const std::string& command);
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325 bool ezset (const char const *command);
327 void addCurve (const float* x, const double* y, int num);
328 void addCurve (const double* x, const float* y, int num);
329 void addCurve (const double* x, const double* y, int num);
330 void addCurve (const double* y, int n);
331 void addCurve (const float* y, int n);