Annotation of OpenXM_contrib/gnuplot/term/eepic.trm, Revision 1.1.1.2
1.1 maekawa 1: /*
1.1.1.2 ! maekawa 2: * $Id: eepic.trm,v 1.8 1998/12/14 18:38:47 lhecking Exp $
1.1 maekawa 3: *
4: */
5:
6: /* GNUPLOT - eepic.trm */
7:
8: /*[
9: * Copyright 1990 - 1993, 1998
10: *
11: * Permission to use, copy, and distribute this software and its
12: * documentation for any purpose with or without fee is hereby granted,
13: * provided that the above copyright notice appear in all copies and
14: * that both that copyright notice and this permission notice appear
15: * in supporting documentation.
16: *
17: * Permission to modify the software is granted, but not the right to
18: * distribute the complete modified source code. Modifications are to
19: * be distributed as patches to the released version. Permission to
20: * distribute binaries produced by compiling modified sources is granted,
21: * provided you
22: * 1. distribute the corresponding source modifications from the
23: * released version in the form of a patch file along with the binaries,
24: * 2. add special version identification to distinguish your version
25: * in addition to the base release version number,
26: * 3. provide your name and address as the primary contact for the
27: * support of your modified version, and
28: * 4. retain our contact information in regard to use of the base
29: * software.
30: * Permission to distribute the released version of the source code along
31: * with corresponding source modifications in the form of a patch file is
32: * granted with same provisions 2 through 4 for binary distributions.
33: *
34: * This software is provided "as is" without express or implied warranty
35: * to the extent permitted by applicable law.
36: ]*/
37:
38: /*
39: * This file is included by ../term.c.
40: *
41: * This terminal driver supports:
42: * The EEPIC macros for LaTeX.
43: *
44: * AUTHORS
45: * David Kotz
46: *
47: * send your comments or suggestions to (info-gnuplot@dartmouth.edu).
48: *
49: */
50: /*
51: * This file contains the eepic terminal driver, intended for use with the
52: * eepic.sty macro package for LaTeX. This is an alternative to the
53: * latex driver. You need eepic.sty, epic.sty, and a printer driver that
54: * supports the tpic \specials.
55: *
56: * Although dotted and dashed lines are possible with EEPIC, and are
57: * tempting, they do not work well for high-sample-rate curves, mushing
58: * the dashes all together into a solid line. For now anyway, the EEPIC
59: * driver will have only solid lines. Anyone got a solution?
60: *
61: * LATEX must also be defined.
62: */
63: /*
64: * adapted to the new terminal layout by Stefan Bodewig (Dec. 1995)
65: */
66:
67: #include "driver.h"
68:
69: #ifdef TERM_REGISTER
70: register_term(eepic)
71: #endif
72:
73: #ifdef TERM_PROTO
74: TERM_PUBLIC void EEPIC_init __PROTO((void));
75: TERM_PUBLIC void EEPIC_graphics __PROTO((void));
76: TERM_PUBLIC void EEPIC_text __PROTO((void));
77: TERM_PUBLIC void EEPIC_linetype __PROTO((int linetype));
78: TERM_PUBLIC void EEPIC_move __PROTO((unsigned int x, unsigned int y));
79: TERM_PUBLIC void EEPIC_point __PROTO((unsigned int x, unsigned int y,
80: int number));
81: TERM_PUBLIC void EEPIC_vector __PROTO((unsigned int ux, unsigned int uy));
82: TERM_PUBLIC void EEPIC_arrow __PROTO((unsigned int sx, unsigned int sy,
83: unsigned int ex, unsigned int ey,
84: TBOOLEAN head));
85: TERM_PUBLIC void EEPIC_put_text __PROTO((unsigned int x, unsigned int y,
86: char str[]));
87: TERM_PUBLIC int EEPIC_justify_text __PROTO((enum JUSTIFY mode));
88: TERM_PUBLIC int EEPIC_text_angle __PROTO((int ang));
89: TERM_PUBLIC void EEPIC_reset __PROTO((void));
90:
91: #define EEPIC_PTS_PER_INCH (72.27)
92: /* resolution of printer we expect to use */
93: #define DOTS_PER_INCH (300)
94: /* dot size in pt */
95: #define EEPIC_UNIT (EEPIC_PTS_PER_INCH/DOTS_PER_INCH)
96:
97: /* 5 inches wide by 3 inches high (default) */
98: /* (EEPIC_PTS_PER_INCH/EEPIC_UNIT*5.0) */
99: #define EEPIC_XMAX (5*DOTS_PER_INCH)
100: /* (EEPIC_PTS_PER_INCH/EEPIC_UNIT*3.0) */
101: #define EEPIC_YMAX (3*DOTS_PER_INCH)
102:
103: #define EEPIC_HTIC (5*DOTS_PER_INCH/72) /* (5./EEPIC_UNIT) */
104: #define EEPIC_VTIC (5*DOTS_PER_INCH/72) /* (5./EEPIC_UNIT) */
105: #define EEPIC_HCHAR (DOTS_PER_INCH*53/10/72) /* (5.3/EEPIC_UNIT) */
106: #define EEPIC_VCHAR (DOTS_PER_INCH*11/72) /* (11./EEPIC_UNIT) */
107: #endif /* TERM_PROTO */
108:
109: #ifndef TERM_PROTO_ONLY
110: #ifdef TERM_BODY
111:
112: static unsigned int EEPIC_posx;
113: static unsigned int EEPIC_posy;
114: enum JUSTIFY eepic_justify = LEFT;
115: static int eepic_angle = 0;
116:
117: /* for DOTS point style */
118: #define EEPIC_TINY_DOT "\\rule{.1pt}{.1pt}"
119:
120: /* POINTS */
121: #define EEPIC_POINT_TYPES 12 /* we supply more point types */
122: static char GPFAR *GPFAR EEPIC_points[] =
123: {
124: "\\raisebox{-1.2pt}{\\makebox(0,0){$\\Diamond$}}",
125: "\\makebox(0,0){$+$}",
126: "\\raisebox{-1.2pt}{\\makebox(0,0){$\\Box$}}",
127: "\\makebox(0,0){$\\times$}",
128: "\\makebox(0,0){$\\triangle$}",
129: "\\makebox(0,0){$\\star$}",
130: "\\circle{12}", "\\circle{18}", "\\circle{24}",
131: "\\circle*{12}", "\\circle*{18}", "\\circle*{24}"
132: };
133:
134: /* LINES */
135: #define EEPIC_NUMLINES 5 /* number of linetypes below */
136: static char GPFAR *GPFAR EEPIC_lines[] =
137: {
138: "\\thicklines \\path", /* -2 border */
139: "\\thinlines \\drawline[-50]", /* -1 axes */
140: "\\thinlines \\path", /* 0 solid thin */
141: "\\thicklines \\path", /* 1 solid thick */
142: "\\Thicklines \\path", /* 2 solid Thick */
143: };
144: /* These are other possibilities
145: "\\thinlines \\dottedline{30}",
146: "\\thinlines \\drawline[-30]",
147: "\\thinlines \\dottedline{60}",
148: "\\thinlines \\drawline[-60]",
149: "\\thinlines \\dashline[-10]{20}[6]"
150: */
151: static int EEPIC_type; /* current line type */
152: static TBOOLEAN EEPIC_inline = FALSE; /* are we in the middle of a line */
153: void EEPIC_endline __PROTO((void)); /* terminate any line in progress */
154: static int EEPIC_linecount = 0; /* number of points in line so far */
155: #define EEPIC_LINEMAX 50 /* max value for linecount */
156:
157: /* ARROWS */
158: /* we use the same code as for LATEX */
159: /* figure out the best arrow */
160: void best_latex_arrow __PROTO((int sx, int sy, int ex, int ey, int who,
161: TBOOLEAN head));
162:
163: TERM_PUBLIC void EEPIC_init()
164: {
165: EEPIC_posx = EEPIC_posy = 0;
166: EEPIC_linetype(-1);
167: fprintf(gpoutfile, "%% GNUPLOT: LaTeX picture using EEPIC macros\n\
168: \\setlength{\\unitlength}{%fpt}\n", EEPIC_UNIT);
169: }
170:
171:
172: TERM_PUBLIC void EEPIC_graphics()
173: {
174: register struct termentry *t = term;
175:
176: fprintf(gpoutfile, "\\begin{picture}(%d,%d)(0,0)\n\
177: \\footnotesize\n", t->xmax, t->ymax);
178:
179: }
180:
181:
182: TERM_PUBLIC void EEPIC_text()
183: {
184: EEPIC_endline();
185: fputs("\\end{picture}\n", gpoutfile);
186: }
187:
188:
189: TERM_PUBLIC void EEPIC_linetype(linetype)
190: int linetype;
191: {
192: EEPIC_endline();
193:
194: if (linetype >= EEPIC_NUMLINES - 2)
195: linetype %= (EEPIC_NUMLINES - 2);
196:
197: EEPIC_type = linetype;
198: }
199:
200:
201:
202: TERM_PUBLIC void EEPIC_move(x, y)
203: unsigned int x, y;
204: {
205: EEPIC_endline();
206:
207: EEPIC_posx = x;
208: EEPIC_posy = y;
209: }
210:
211:
212: TERM_PUBLIC void EEPIC_point(x, y, number) /* version of line_and_point */
213: unsigned int x, y;
214: int number; /* type of point */
215: {
216: EEPIC_move(x, y);
217:
218: /* Print the character defined by 'number'; number < 0 means
219: to use a dot, otherwise one of the defined points. */
220: fprintf(gpoutfile, "\\put(%d,%d){%s}\n", x, y,
221: (number < 0 ? EEPIC_TINY_DOT
222: : EEPIC_points[number % EEPIC_POINT_TYPES]));
223: }
224:
225:
226: TERM_PUBLIC void EEPIC_vector(ux, uy)
227: unsigned int ux, uy;
228: {
229: if (!EEPIC_inline) {
230: EEPIC_inline = TRUE;
231:
232: /* Start a new line. This depends on line type */
233: fprintf(gpoutfile, "%s(%u,%u)",
234: EEPIC_lines[EEPIC_type + 2],
235: EEPIC_posx, EEPIC_posy);
236: EEPIC_linecount = 1;
237: } else {
238: /* Even though we are in middle of a path,
239: * we may want to start a new path command.
240: * If they are too long then latex will choke.
241: */
242: if (EEPIC_linecount++ >= EEPIC_LINEMAX) {
243: fprintf(gpoutfile, "\n%s(%u,%u)",
244: EEPIC_lines[EEPIC_type + 2],
245: EEPIC_posx, EEPIC_posy);
246: EEPIC_linecount = 1;
247: }
248: }
249: fprintf(gpoutfile, "(%u,%u)", ux, uy);
250: EEPIC_posx = ux;
251: EEPIC_posy = uy;
252: }
253:
254: void EEPIC_endline()
255: {
256: if (EEPIC_inline) {
257: putc('\n', gpoutfile);
258: EEPIC_inline = FALSE;
259: }
260: }
261:
262:
263: TERM_PUBLIC void EEPIC_arrow(sx, sy, ex, ey, head)
264: unsigned int sx, sy, ex, ey;
265: TBOOLEAN head;
266: {
267: best_latex_arrow(sx, sy, ex, ey, 2, head); /* call latex routine */
268:
269: EEPIC_posx = ex;
270: EEPIC_posy = ey;
271: }
272:
273:
274: TERM_PUBLIC void EEPIC_put_text(x, y, str)
275: unsigned int x, y; /* reference point of string */
276: char str[]; /* the text */
277: {
278: EEPIC_endline();
279:
280: fprintf(gpoutfile, "\\put(%d,%d)", x, y);
281: if ((str[0] == '{') || (str[0] == '[')) {
282: fprintf(gpoutfile, "{\\makebox(0,0)%s}\n", str);
283: } else
284: switch (eepic_angle) {
285: case 0:{
286: switch (eepic_justify) {
287: case LEFT:{
288: fprintf(gpoutfile,
289: "{\\makebox(0,0)[l]{%s}}\n", str);
290: break;
291: }
292: case CENTRE:{
293: fprintf(gpoutfile,
294: "{\\makebox(0,0){%s}}\n", str);
295: break;
296: }
297: case RIGHT:{
298: fprintf(gpoutfile,
299: "{\\makebox(0,0)[r]{%s}}\n", str);
300: break;
301: }
302: }
303: break;
304: }
305: case 1:{ /* put text in a short stack */
306: switch (eepic_justify) {
307: case LEFT:{
308: fprintf(gpoutfile,
309: "{\\makebox(0,0)[lb]{\\shortstack{%s}}}\n", str);
310: break;
311: }
312: case CENTRE:{
313: fprintf(gpoutfile,
314: "{\\makebox(0,0)[l]{\\shortstack{%s}}}\n", str);
315: break;
316: }
317: case RIGHT:{
318: fprintf(gpoutfile,
319: "{\\makebox(0,0)[lt]{\\shortstack{%s}}}\n", str);
320: break;
321: }
322: }
323: break;
324: }
325: }
326: }
327:
328:
329:
330: TERM_PUBLIC int EEPIC_justify_text(mode)
331: enum JUSTIFY mode;
332: {
333: eepic_justify = mode;
334: return (TRUE);
335: }
336:
337: TERM_PUBLIC int EEPIC_text_angle(ang)
338: int ang;
339: {
340: /* we can't really write text vertically, but this will
341: put the ylabel centred at the left of the plot, and
342: then we'll make a \shortstack */
343: eepic_angle = ang;
344: return (TRUE);
345: }
346:
347: TERM_PUBLIC void EEPIC_reset()
348: {
349: EEPIC_endline();
350: EEPIC_posx = EEPIC_posy = 0;
351: }
352:
353: #endif
354:
355: #ifdef TERM_TABLE
356:
357: TERM_TABLE_START(eepic_driver)
358: "eepic", "EEPIC -- extended LaTeX picture environment",
359: EEPIC_XMAX, EEPIC_YMAX, EEPIC_VCHAR, EEPIC_HCHAR,
360: EEPIC_VTIC, EEPIC_HTIC, options_null, EEPIC_init, EEPIC_reset,
361: EEPIC_text, null_scale, EEPIC_graphics, EEPIC_move, EEPIC_vector,
362: EEPIC_linetype, EEPIC_put_text, EEPIC_text_angle,
363: EEPIC_justify_text, EEPIC_point, EEPIC_arrow, set_font_null
364: TERM_TABLE_END(eepic_driver)
365:
366: #undef LAST_TERM
367: #define LAST_TERM eepic_driver
368:
369: #endif
370: #endif
371:
372: #ifdef TERM_HELP
373: START_HELP(eepic)
374: "1 eepic",
375: "?commands set terminal eepic",
376: "?set terminal eepic",
377: "?set term eepic",
378: "?terminal eepic",
379: "?term eepic",
380: "?eepic",
381: " The `eepic` terminal driver supports the extended LaTeX picture environment.",
382: " It is an alternative to the `latex` driver.",
383: "",
384: " The output of this terminal is intended for use with the \"eepic.sty\" macro",
385: " package for LaTeX. To use it, you need \"eepic.sty\", \"epic.sty\" and a",
386: " printer driver that supports the \"tpic\" \\specials. If your printer driver",
387: " doesn't support those \\specials, \"eepicemu.sty\" will enable you to use some",
388: " of them.",
389: "",
390: " Although dotted and dashed lines are possible with `eepic` and are tempting,",
391: " they do not work well for high-sample-rate curves, fusing the dashes all",
392: " together into a solid line. For now, the `eepic` driver creates only solid",
393: " lines. There is another gnuplot driver (`tpic`) that supports dashed lines,",
394: " but it cannot be used if your DVI driver doesn't support \"tpic\" \\specials.",
395: "",
396: " All drivers for LaTeX offer a special way of controlling text positioning:",
397: " If any text string begins with '{', you also need to include a '}' at the",
398: " end of the text, and the whole text will be centered both horizontally",
399: " and vertically by LaTeX. --- If the text string begins with '[', you need",
400: " to continue it with: a position specification (up to two out of t,b,l,r),",
401: " ']{', the text itself, and finally, '}'. The text itself may be anything",
402: " LaTeX can typeset as an LR-box. \\rule{}{}'s may help for best positioning.",
403: "",
404: " The `eepic` terminal has no options.",
405: "",
406: " Examples:",
407: " About label positioning:",
408: " Use gnuplot defaults (mostly sensible, but sometimes not really best):",
409: " set title '\\LaTeX\\ -- $ \\gamma $'",
410: " Force centering both horizontally and vertically:",
411: " set label '{\\LaTeX\\ -- $ \\gamma $}' at 0,0",
412: " Specify own positioning (top here):",
413: " set xlabel '[t]{\\LaTeX\\ -- $ \\gamma $}'",
414: " The other label -- account for long ticlabels:",
415: " set ylabel '[r]{\\LaTeX\\ -- $ \\gamma $\\rule{7mm}{0pt}'"
416: END_HELP(eepic)
417: #endif /* TERM_HELP */
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