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ef416fc2 | 1 | /* |
bc44d920 | 2 | * "$Id: hpgl-vector.c 6649 2007-07-11 21:46:42Z mike $" |
ef416fc2 | 3 | * |
4 | * HP-GL/2 vector routines for the Common UNIX Printing System (CUPS). | |
5 | * | |
bc44d920 | 6 | * Copyright 2007 by Apple Inc. |
c0e1af83 | 7 | * Copyright 1993-2007 by Easy Software Products. |
ef416fc2 | 8 | * |
9 | * These coded instructions, statements, and computer programs are the | |
bc44d920 | 10 | * property of Apple Inc. and are protected by Federal copyright |
11 | * law. Distribution and use rights are outlined in the file "LICENSE.txt" | |
12 | * which should have been included with this file. If this file is | |
13 | * file is missing or damaged, see the license at "http://www.cups.org/". | |
ef416fc2 | 14 | * |
15 | * This file is subject to the Apple OS-Developed Software exception. | |
16 | * | |
17 | * Contents: | |
18 | * | |
19 | * AA_arc_absolute() - Draw an arc. | |
20 | * AR_arc_relative() - Draw an arc relative to the current pen | |
21 | * AT_arc_absolute3() - Draw an arc using 3 points. | |
22 | * CI_circle() - Draw a circle. | |
23 | * PA_plot_absolute() - Plot a line using absolute coordinates. | |
24 | * PD_pen_down() - Start drawing. | |
25 | * PE_polygon_encoded() - Draw an encoded polyline. | |
26 | * PR_plot_relative() - Plot a line using relative coordinates. | |
27 | * PU_pen_up() - Stop drawing. | |
28 | * RT_arc_relative3() - Draw an arc through 3 points relative to the | |
29 | * decode_number() - Decode an encoded number. | |
30 | * plot_points() - Plot the specified points. | |
31 | */ | |
32 | ||
33 | /* | |
34 | * Include necessary headers... | |
35 | */ | |
36 | ||
37 | #include "hpgltops.h" | |
38 | ||
39 | ||
40 | /* | |
41 | * Local functions... | |
42 | */ | |
43 | ||
44 | static double decode_number(unsigned char **, int, double); | |
45 | static void plot_points(int, param_t *); | |
46 | ||
47 | ||
48 | /* | |
49 | * 'AA_arc_absolute()' - Draw an arc. | |
50 | */ | |
51 | ||
52 | void | |
53 | AA_arc_absolute(int num_params, /* I - Number of parameters */ | |
54 | param_t *params) /* I - Parameters */ | |
55 | { | |
56 | float x, y, /* Transformed coordinates */ | |
57 | dx, dy; /* Distance from current pen */ | |
58 | float start, end, /* Start and end angles */ | |
59 | theta, /* Current angle */ | |
60 | dt, /* Step between points */ | |
61 | radius; /* Radius of arc */ | |
62 | ||
63 | ||
64 | if (num_params < 3) | |
65 | return; | |
66 | ||
67 | x = Transform[0][0] * params[0].value.number + | |
68 | Transform[0][1] * params[1].value.number + | |
69 | Transform[0][2]; | |
70 | y = Transform[1][0] * params[0].value.number + | |
71 | Transform[1][1] * params[1].value.number + | |
72 | Transform[1][2]; | |
73 | ||
74 | dx = PenPosition[0] - x; | |
75 | dy = PenPosition[1] - y; | |
76 | ||
77 | start = (float)(180.0 * atan2(dy, dx) / M_PI); | |
78 | if (start < 0.0) | |
79 | start += 360.0f; | |
80 | ||
81 | end = start + params[2].value.number; | |
82 | radius = (float)hypot(dx, dy); | |
83 | ||
84 | if (PenDown) | |
85 | { | |
86 | if (num_params > 3 && params[3].value.number > 0.0) | |
87 | dt = (float)fabs(params[3].value.number); | |
88 | else | |
89 | dt = 5.0; | |
90 | ||
91 | if (!PolygonMode) | |
92 | Outputf("MP\n"); | |
93 | ||
94 | PenValid = 1; | |
95 | ||
96 | Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]); | |
97 | ||
98 | if (start < end) | |
99 | for (theta = start + dt; theta < end; theta += dt) | |
100 | { | |
101 | PenPosition[0] = (float)(x + radius * cos(M_PI * theta / 180.0)); | |
102 | PenPosition[1] = (float)(y + radius * sin(M_PI * theta / 180.0)); | |
103 | ||
104 | Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); | |
105 | } | |
106 | else | |
107 | for (theta = start - dt; theta > end; theta -= dt) | |
108 | { | |
109 | PenPosition[0] = (float)(x + radius * cos(M_PI * theta / 180.0)); | |
110 | PenPosition[1] = (float)(y + radius * sin(M_PI * theta / 180.0)); | |
111 | ||
112 | Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); | |
113 | } | |
114 | } | |
115 | ||
116 | PenPosition[0] = (float)(x + radius * cos(M_PI * end / 180.0)); | |
117 | PenPosition[1] = (float)(y + radius * sin(M_PI * end / 180.0)); | |
118 | ||
119 | if (PenDown) | |
120 | { | |
121 | Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); | |
122 | ||
123 | if (!PolygonMode) | |
124 | Outputf("ST\n"); | |
125 | } | |
126 | } | |
127 | ||
128 | ||
129 | /* | |
130 | * 'AR_arc_relative()' - Draw an arc relative to the current pen | |
131 | * position. | |
132 | */ | |
133 | ||
134 | void | |
135 | AR_arc_relative(int num_params, /* I - Number of parameters */ | |
136 | param_t *params) /* I - Parameters */ | |
137 | { | |
138 | float x, y, /* Transformed coordinates */ | |
139 | dx, dy; /* Distance from current pen */ | |
140 | float start, end, /* Start and end angles */ | |
141 | theta, /* Current angle */ | |
142 | dt, /* Step between points */ | |
143 | radius; /* Radius of arc */ | |
144 | ||
145 | ||
146 | if (num_params < 3) | |
147 | return; | |
148 | ||
149 | x = Transform[0][0] * params[0].value.number + | |
150 | Transform[0][1] * params[1].value.number + | |
151 | PenPosition[0]; | |
152 | y = Transform[1][0] * params[0].value.number + | |
153 | Transform[1][1] * params[1].value.number + | |
154 | PenPosition[1]; | |
155 | ||
156 | dx = PenPosition[0] - x; | |
157 | dy = PenPosition[1] - y; | |
158 | ||
159 | start = (float)(180.0 * atan2(dy, dx) / M_PI); | |
160 | if (start < 0.0) | |
161 | start += 360.0f; | |
162 | ||
163 | end = start + params[2].value.number; | |
164 | radius = (float)hypot(dx, dy); | |
165 | ||
166 | if (PenDown) | |
167 | { | |
168 | if (num_params > 3 && params[3].value.number > 0.0) | |
169 | dt = (float)fabs(params[3].value.number); | |
170 | else | |
171 | dt = 5.0; | |
172 | ||
173 | if (!PolygonMode) | |
174 | Outputf("MP\n"); | |
175 | ||
176 | PenValid = 1; | |
177 | ||
178 | Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]); | |
179 | ||
180 | if (start < end) | |
181 | for (theta = start + dt; theta < end; theta += dt) | |
182 | { | |
183 | PenPosition[0] = (float)(x + radius * cos(M_PI * theta / 180.0)); | |
184 | PenPosition[1] = (float)(y + radius * sin(M_PI * theta / 180.0)); | |
185 | ||
186 | Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); | |
187 | } | |
188 | else | |
189 | for (theta = start - dt; theta > end; theta -= dt) | |
190 | { | |
191 | PenPosition[0] = (float)(x + radius * cos(M_PI * theta / 180.0)); | |
192 | PenPosition[1] = (float)(y + radius * sin(M_PI * theta / 180.0)); | |
193 | ||
194 | Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); | |
195 | } | |
196 | } | |
197 | ||
198 | PenPosition[0] = (float)(x + radius * cos(M_PI * end / 180.0)); | |
199 | PenPosition[1] = (float)(y + radius * sin(M_PI * end / 180.0)); | |
200 | ||
201 | if (PenDown) | |
202 | { | |
203 | Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); | |
204 | ||
205 | if (!PolygonMode) | |
206 | Outputf("ST\n"); | |
207 | } | |
208 | } | |
209 | ||
210 | ||
211 | /* | |
212 | * 'AT_arc_absolute3()' - Draw an arc using 3 points. | |
213 | * | |
214 | * Note: | |
215 | * | |
216 | * Currently this only draws two line segments through the | |
217 | * specified points. | |
218 | */ | |
219 | ||
220 | void | |
221 | AT_arc_absolute3(int num_params, /* I - Number of parameters */ | |
222 | param_t *params) /* I - Parameters */ | |
223 | { | |
224 | if (num_params < 4) | |
225 | return; | |
226 | ||
227 | if (PenDown) | |
228 | { | |
229 | if (!PolygonMode) | |
230 | Outputf("MP\n"); | |
231 | ||
232 | PenValid = 1; | |
233 | ||
234 | Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]); | |
235 | ||
236 | PenPosition[0] = Transform[0][0] * params[0].value.number + | |
237 | Transform[0][1] * params[1].value.number + | |
238 | Transform[0][2]; | |
239 | PenPosition[1] = Transform[1][0] * params[0].value.number + | |
240 | Transform[1][1] * params[1].value.number + | |
241 | Transform[1][2]; | |
242 | ||
243 | Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); | |
244 | } | |
245 | ||
246 | PenPosition[0] = Transform[0][0] * params[2].value.number + | |
247 | Transform[0][1] * params[3].value.number + | |
248 | Transform[0][2]; | |
249 | PenPosition[1] = Transform[1][0] * params[2].value.number + | |
250 | Transform[1][1] * params[3].value.number + | |
251 | Transform[1][2]; | |
252 | ||
253 | if (PenDown) | |
254 | { | |
255 | Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); | |
256 | ||
257 | if (!PolygonMode) | |
258 | Outputf("ST\n"); | |
259 | } | |
260 | } | |
261 | ||
262 | ||
263 | /* | |
264 | * 'CI_circle()' - Draw a circle. | |
265 | */ | |
266 | ||
267 | void | |
268 | CI_circle(int num_params, /* I - Number of parameters */ | |
269 | param_t *params) /* I - Parameters */ | |
270 | { | |
271 | float x, y; /* Transformed coordinates */ | |
272 | float theta, /* Current angle */ | |
273 | dt, /* Step between points */ | |
274 | radius; /* Radius of circle */ | |
275 | ||
276 | ||
277 | if (num_params < 1) | |
278 | return; | |
279 | ||
280 | if (!PenDown) | |
281 | return; | |
282 | ||
283 | radius = params[0].value.number; | |
284 | ||
285 | if (num_params > 1) | |
286 | dt = (float)fabs(params[1].value.number); | |
287 | else | |
288 | dt = 5.0; | |
289 | ||
290 | if (!PolygonMode) | |
291 | Outputf("MP\n"); | |
292 | ||
293 | PenValid = 1; | |
294 | ||
295 | for (theta = 0.0; theta < 360.0; theta += dt) | |
296 | { | |
297 | x = (float)(PenPosition[0] + | |
298 | radius * cos(M_PI * theta / 180.0) * Transform[0][0] + | |
299 | radius * sin(M_PI * theta / 180.0) * Transform[0][1]); | |
300 | y = (float)(PenPosition[1] + | |
301 | radius * cos(M_PI * theta / 180.0) * Transform[1][0] + | |
302 | radius * sin(M_PI * theta / 180.0) * Transform[1][1]); | |
303 | ||
304 | Outputf("%.3f %.3f %s\n", x, y, theta == 0.0 ? "MO" : "LI"); | |
305 | } | |
306 | ||
307 | Outputf("CP\n"); | |
308 | if (!PolygonMode) | |
309 | Outputf("ST\n"); | |
310 | } | |
311 | ||
312 | ||
313 | /* | |
314 | * 'PA_plot_absolute()' - Plot a line using absolute coordinates. | |
315 | */ | |
316 | ||
317 | void | |
318 | PA_plot_absolute(int num_params, /* I - Number of parameters */ | |
319 | param_t *params) /* I - Parameters */ | |
320 | { | |
321 | PenMotion = 0; | |
322 | ||
323 | if (num_params > 1) | |
324 | plot_points(num_params, params); | |
325 | } | |
326 | ||
327 | ||
328 | /* | |
329 | * 'PD_pen_down()' - Start drawing. | |
330 | */ | |
331 | ||
332 | void | |
333 | PD_pen_down(int num_params, /* I - Number of parameters */ | |
334 | param_t *params) /* I - Parameters */ | |
335 | { | |
336 | PenDown = 1; | |
337 | ||
338 | if (num_params > 1) | |
339 | plot_points(num_params, params); | |
340 | } | |
341 | ||
342 | ||
343 | /* | |
344 | * 'PE_polygon_encoded()' - Draw an encoded polyline. | |
345 | */ | |
346 | ||
347 | void | |
348 | PE_polyline_encoded(int num_params, /* I - Number of parameters */ | |
349 | param_t *params) /* I - Parameters */ | |
350 | { | |
351 | unsigned char *s; /* Pointer into string */ | |
352 | int temp, /* Temporary value */ | |
353 | base_bits, /* Data bits per byte */ | |
354 | draw, /* Draw or move */ | |
355 | abscoords; /* Use absolute coordinates */ | |
356 | double tx, ty, /* Transformed coordinates */ | |
357 | x, y, /* Raw coordinates */ | |
358 | frac_bits; /* Multiplier for encoded number */ | |
359 | ||
360 | ||
361 | base_bits = 6; | |
362 | frac_bits = 1.0; | |
363 | draw = PenDown; | |
364 | abscoords = 0; | |
365 | ||
366 | if (num_params == 0) | |
367 | return; | |
368 | ||
369 | if (!PolygonMode) | |
370 | { | |
371 | Outputf("MP\n"); | |
372 | PenValid = 0; | |
373 | } | |
374 | ||
375 | if (!PenValid) | |
376 | { | |
377 | Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]); | |
378 | PenValid = 1; | |
379 | } | |
380 | ||
381 | for (s = (unsigned char *)params[0].value.string; *s != '\0';) | |
382 | switch (*s) | |
383 | { | |
384 | case '7' : | |
385 | s ++; | |
386 | base_bits = 5; | |
387 | ||
388 | #ifdef DEBUG | |
389 | fputs("DEBUG: 7-bit\n", stderr); | |
390 | #endif /* DEBUG */ | |
391 | ||
392 | Outputf("%% PE: 7-bit\n"); | |
393 | break; | |
394 | case ':' : /* Select pen */ | |
395 | s ++; | |
396 | PenNumber = (int)decode_number(&s, base_bits, 1.0); | |
397 | ||
398 | #ifdef DEBUG | |
399 | fprintf(stderr, "DEBUG: set pen #%d\n", PenNumber); | |
400 | #endif /* DEBUG */ | |
401 | ||
402 | Outputf("%% PE: set pen #%d\n", PenNumber); | |
403 | ||
404 | if (PageDirty) | |
405 | printf("%.3f %.3f %.3f %.2f SP\n", Pens[PenNumber].rgb[0], | |
406 | Pens[PenNumber].rgb[1], Pens[PenNumber].rgb[2], | |
407 | Pens[PenNumber].width * PenScaling); | |
408 | break; | |
409 | case '<' : /* Next coords are a move-to */ | |
410 | draw = 0; | |
411 | s ++; | |
412 | ||
413 | #ifdef DEBUG | |
414 | fputs("DEBUG: moveto\n", stderr); | |
415 | #endif /* DEBUG */ | |
416 | ||
417 | Outputf("%% PE: moveto\n"); | |
418 | break; | |
419 | case '>' : /* Set fractional bits */ | |
420 | s ++; | |
421 | temp = (int)decode_number(&s, base_bits, 1.0); | |
422 | frac_bits = 1.0 / (1 << temp); | |
423 | ||
424 | #ifdef DEBUG | |
425 | fprintf(stderr, "DEBUG: set fractional bits %d\n", temp); | |
426 | #endif /* DEBUG */ | |
427 | ||
428 | Outputf("%% PE: set fractional bits %d\n", temp); | |
429 | break; | |
430 | case '=' : /* Next coords are absolute */ | |
431 | s ++; | |
432 | abscoords = 1; | |
433 | ||
434 | #ifdef DEBUG | |
435 | fputs("DEBUG: absolute\n", stderr); | |
436 | #endif /* DEBUG */ | |
437 | ||
438 | Outputf("%% PE: absolute\n"); | |
439 | break; | |
440 | default : | |
441 | if (*s >= 63) | |
442 | { | |
443 | /* | |
444 | * Coordinate... | |
445 | */ | |
446 | ||
447 | x = decode_number(&s, base_bits, frac_bits); | |
448 | y = decode_number(&s, base_bits, frac_bits); | |
449 | ||
450 | #ifdef DEBUG | |
451 | fprintf(stderr, "DEBUG: coords %.3f %.3f\n", x, y); | |
452 | #endif /* DEBUG */ | |
453 | ||
454 | Outputf("%% PE: coords %.3f %.3f\n", x, y); | |
455 | ||
456 | if (abscoords) | |
457 | { | |
458 | tx = Transform[0][0] * x + Transform[0][1] * y + | |
459 | Transform[0][2]; | |
460 | ty = Transform[1][0] * x + Transform[1][1] * y + | |
461 | Transform[1][2]; | |
462 | } | |
463 | else if (x == 0.0 && y == 0.0) | |
464 | { | |
465 | draw = 1; | |
466 | continue; | |
467 | } | |
468 | else | |
469 | { | |
470 | tx = Transform[0][0] * x + Transform[0][1] * y + | |
471 | PenPosition[0]; | |
472 | ty = Transform[1][0] * x + Transform[1][1] * y + | |
473 | PenPosition[1]; | |
474 | } | |
475 | ||
476 | if (draw) | |
477 | { | |
478 | if (fabs(PenPosition[0] - tx) > 0.001 || | |
479 | fabs(PenPosition[1] - ty) > 0.001) | |
480 | Outputf("%.3f %.3f LI\n", tx, ty); | |
481 | } | |
482 | else | |
483 | Outputf("%.3f %.3f MO\n", tx, ty); | |
484 | ||
485 | PenPosition[0] = (float)tx; | |
486 | PenPosition[1] = (float)ty; | |
487 | ||
488 | draw = 1; | |
489 | abscoords = 0; | |
490 | } | |
491 | else | |
492 | { | |
493 | /* | |
494 | * Junk - ignore... | |
495 | */ | |
496 | ||
497 | if (*s != '\n' && *s != '\r') | |
498 | fprintf(stderr, "WARNING: ignoring illegal PE char \'%c\'...\n", *s); | |
499 | s ++; | |
500 | } | |
501 | break; | |
502 | } | |
503 | ||
504 | if (!PolygonMode) | |
505 | Outputf("ST\n"); | |
506 | } | |
507 | ||
508 | ||
509 | /* | |
510 | * 'PR_plot_relative()' - Plot a line using relative coordinates. | |
511 | */ | |
512 | ||
513 | void | |
514 | PR_plot_relative(int num_params, /* I - Number of parameters */ | |
515 | param_t *params) /* I - Parameters */ | |
516 | { | |
517 | PenMotion = 1; | |
518 | ||
519 | if (num_params > 1) | |
520 | plot_points(num_params, params); | |
521 | } | |
522 | ||
523 | ||
524 | /* | |
525 | * 'PU_pen_up()' - Stop drawing. | |
526 | */ | |
527 | ||
528 | void | |
529 | PU_pen_up(int num_params, /* I - Number of parameters */ | |
530 | param_t *params) /* I - Parameters */ | |
531 | { | |
532 | PenDown = 0; | |
533 | ||
534 | if (num_params > 1) | |
535 | plot_points(num_params, params); | |
536 | } | |
537 | ||
538 | ||
539 | /* | |
540 | * 'RT_arc_relative3()' - Draw an arc through 3 points relative to the | |
541 | * current pen position. | |
542 | * | |
543 | * Note: | |
544 | * | |
545 | * This currently only draws two line segments through the specified | |
546 | * points. | |
547 | */ | |
548 | ||
549 | void | |
550 | RT_arc_relative3(int num_params, /* I - Number of parameters */ | |
551 | param_t *params) /* I - Parameters */ | |
552 | { | |
553 | if (num_params < 4) | |
554 | return; | |
555 | ||
556 | if (PenDown) | |
557 | { | |
558 | if (!PolygonMode) | |
559 | Outputf("MP\n"); | |
560 | ||
561 | PenValid = 1; | |
562 | ||
563 | Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]); | |
564 | ||
565 | PenPosition[0] = Transform[0][0] * params[0].value.number + | |
566 | Transform[0][1] * params[1].value.number + | |
567 | PenPosition[0]; | |
568 | PenPosition[1] = Transform[1][0] * params[0].value.number + | |
569 | Transform[1][1] * params[1].value.number + | |
570 | PenPosition[1]; | |
571 | ||
572 | Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); | |
573 | } | |
574 | ||
575 | PenPosition[0] = Transform[0][0] * params[2].value.number + | |
576 | Transform[0][1] * params[3].value.number + | |
577 | PenPosition[0]; | |
578 | PenPosition[1] = Transform[1][0] * params[2].value.number + | |
579 | Transform[1][1] * params[3].value.number + | |
580 | PenPosition[1]; | |
581 | ||
582 | if (PenDown) | |
583 | { | |
584 | Outputf("%.3f %.3f LI\n", PenPosition[0], PenPosition[1]); | |
585 | ||
586 | if (!PolygonMode) | |
587 | Outputf("ST\n"); | |
588 | } | |
589 | } | |
590 | ||
591 | ||
592 | /* | |
593 | * 'decode_number()' - Decode an encoded number. | |
594 | */ | |
595 | ||
596 | static double /* O - Value */ | |
597 | decode_number(unsigned char **s, /* IO - String to decode */ | |
598 | int base_bits, /* I - Number of data bits per byte */ | |
599 | double frac_bits) /* I - Multiplier for fractional data */ | |
600 | { | |
601 | double temp, /* Current value */ | |
602 | shift; /* Multiplier */ | |
603 | int sign; /* Sign of result */ | |
604 | ||
605 | ||
606 | sign = 0; | |
607 | ||
608 | if (base_bits == 5) | |
609 | { | |
610 | for (temp = 0.0, shift = frac_bits * 0.5; **s != '\0'; (*s) ++) | |
611 | if (**s >= 95 && **s < 127) | |
612 | { | |
613 | if (sign == 0) | |
614 | { | |
615 | if ((**s - 95) & 1) | |
616 | sign = -1; | |
617 | else | |
618 | sign = 1; | |
619 | ||
620 | temp += ((**s - 95) & ~1) * shift; | |
621 | } | |
622 | else | |
623 | temp += (**s - 95) * shift; | |
624 | break; | |
625 | } | |
626 | else if (**s < 63) | |
627 | { | |
628 | if (**s != '\r' && **s != '\n') | |
c0e1af83 | 629 | fprintf(stderr, "DEBUG: Bad PE character 0x%02X!\n", **s); |
ef416fc2 | 630 | |
631 | continue; | |
632 | } | |
633 | else | |
634 | { | |
635 | if (sign == 0) | |
636 | { | |
637 | if ((**s - 63) & 1) | |
638 | sign = -1; | |
639 | else | |
640 | sign = 1; | |
641 | ||
642 | temp += ((**s - 63) & ~1) * shift; | |
643 | } | |
644 | else | |
645 | temp += (**s - 63) * shift; | |
646 | ||
647 | shift *= 32.0; | |
648 | } | |
649 | } | |
650 | else | |
651 | { | |
652 | for (temp = 0.0, shift = frac_bits * 0.5; **s != '\0'; (*s) ++) | |
653 | if (**s >= 191 && **s < 255) | |
654 | { | |
655 | if (sign == 0) | |
656 | { | |
657 | if ((**s - 191) & 1) | |
658 | sign = -1; | |
659 | else | |
660 | sign = 1; | |
661 | ||
662 | temp += ((**s - 191) & ~1) * shift; | |
663 | } | |
664 | else | |
665 | temp += (**s - 191) * shift; | |
666 | break; | |
667 | } | |
668 | else if (**s < 63) | |
669 | { | |
670 | if (**s != '\r' && **s != '\n') | |
c0e1af83 | 671 | fprintf(stderr, "DEBUG: Bad PE character 0x%02X!\n", **s); |
ef416fc2 | 672 | |
673 | continue; | |
674 | } | |
675 | else | |
676 | { | |
677 | if (sign == 0) | |
678 | { | |
679 | if ((**s - 63) & 1) | |
680 | sign = -1; | |
681 | else | |
682 | sign = 1; | |
683 | ||
684 | temp += ((**s - 63) & ~1) * shift; | |
685 | } | |
686 | else | |
687 | temp += (**s - 63) * shift; | |
688 | ||
689 | shift *= 64.0; | |
690 | } | |
691 | } | |
692 | ||
693 | (*s) ++; | |
694 | ||
695 | return (temp * sign); | |
696 | } | |
697 | ||
698 | ||
699 | /* | |
700 | * 'plot_points()' - Plot the specified points. | |
701 | */ | |
702 | ||
703 | static void | |
704 | plot_points(int num_params, /* I - Number of parameters */ | |
705 | param_t *params) /* I - Parameters */ | |
706 | { | |
707 | int i; /* Looping var */ | |
708 | float x, y; /* Transformed coordinates */ | |
709 | ||
710 | ||
711 | if (PenDown) | |
712 | { | |
713 | if (!PolygonMode) | |
714 | { | |
715 | Outputf("MP\n"); | |
716 | Outputf("%.3f %.3f MO\n", PenPosition[0], PenPosition[1]); | |
717 | ||
718 | PenValid = 1; | |
719 | } | |
720 | } | |
721 | ||
722 | for (i = 0; i < num_params; i += 2) | |
723 | { | |
724 | if (PenMotion == 0) | |
725 | { | |
726 | x = Transform[0][0] * params[i + 0].value.number + | |
727 | Transform[0][1] * params[i + 1].value.number + | |
728 | Transform[0][2]; | |
729 | y = Transform[1][0] * params[i + 0].value.number + | |
730 | Transform[1][1] * params[i + 1].value.number + | |
731 | Transform[1][2]; | |
732 | } | |
733 | else | |
734 | { | |
735 | x = Transform[0][0] * params[i + 0].value.number + | |
736 | Transform[0][1] * params[i + 1].value.number + | |
737 | PenPosition[0]; | |
738 | y = Transform[1][0] * params[i + 0].value.number + | |
739 | Transform[1][1] * params[i + 1].value.number + | |
740 | PenPosition[1]; | |
741 | } | |
742 | ||
743 | if (PenDown) | |
744 | { | |
745 | if (PolygonMode && i == 0) | |
746 | Outputf("%.3f %.3f MO\n", x, y); | |
747 | else if (fabs(PenPosition[0] - x) > 0.001 || | |
748 | fabs(PenPosition[1] - y) > 0.001) | |
749 | Outputf("%.3f %.3f LI\n", x, y); | |
750 | } | |
751 | ||
752 | PenPosition[0] = x; | |
753 | PenPosition[1] = y; | |
754 | } | |
755 | ||
756 | if (PenDown) | |
757 | { | |
758 | if (!PolygonMode) | |
759 | Outputf("ST\n"); | |
760 | } | |
761 | } | |
762 | ||
763 | ||
764 | /* | |
bc44d920 | 765 | * End of "$Id: hpgl-vector.c 6649 2007-07-11 21:46:42Z mike $". |
ef416fc2 | 766 | */ |