Line data Source code
1 : /******************************************************************************
2 : *
3 : * Project: Microstation DGN Access Library
4 : * Purpose: Application visible helper functions for parsing DGN information.
5 : * Author: Frank Warmerdam, warmerdam@pobox.com
6 : *
7 : ******************************************************************************
8 : * Copyright (c) 2002, Avenza Systems Inc, http://www.avenza.com/
9 : *
10 : * SPDX-License-Identifier: MIT
11 : ****************************************************************************/
12 :
13 : #include "dgnlibp.h"
14 :
15 : #include <algorithm>
16 :
17 : static const unsigned char abyDefaultPCT[256][3] = {
18 : {255, 255, 255}, {0, 0, 255}, {0, 255, 0}, {255, 0, 0},
19 : {255, 255, 0}, {255, 0, 255}, {255, 127, 0}, {0, 255, 255},
20 : {64, 64, 64}, {192, 192, 192}, {254, 0, 96}, {160, 224, 0},
21 : {0, 254, 160}, {128, 0, 160}, {176, 176, 176}, {0, 240, 240},
22 : {240, 240, 240}, {0, 0, 240}, {0, 240, 0}, {240, 0, 0},
23 : {240, 240, 0}, {240, 0, 240}, {240, 122, 0}, {0, 240, 240},
24 : {240, 240, 240}, {0, 0, 240}, {0, 240, 0}, {240, 0, 0},
25 : {240, 240, 0}, {240, 0, 240}, {240, 122, 0}, {0, 225, 225},
26 : {225, 225, 225}, {0, 0, 225}, {0, 225, 0}, {225, 0, 0},
27 : {225, 225, 0}, {225, 0, 225}, {225, 117, 0}, {0, 225, 225},
28 : {225, 225, 225}, {0, 0, 225}, {0, 225, 0}, {225, 0, 0},
29 : {225, 225, 0}, {225, 0, 225}, {225, 117, 0}, {0, 210, 210},
30 : {210, 210, 210}, {0, 0, 210}, {0, 210, 0}, {210, 0, 0},
31 : {210, 210, 0}, {210, 0, 210}, {210, 112, 0}, {0, 210, 210},
32 : {210, 210, 210}, {0, 0, 210}, {0, 210, 0}, {210, 0, 0},
33 : {210, 210, 0}, {210, 0, 210}, {210, 112, 0}, {0, 195, 195},
34 : {195, 195, 195}, {0, 0, 195}, {0, 195, 0}, {195, 0, 0},
35 : {195, 195, 0}, {195, 0, 195}, {195, 107, 0}, {0, 195, 195},
36 : {195, 195, 195}, {0, 0, 195}, {0, 195, 0}, {195, 0, 0},
37 : {195, 195, 0}, {195, 0, 195}, {195, 107, 0}, {0, 180, 180},
38 : {180, 180, 180}, {0, 0, 180}, {0, 180, 0}, {180, 0, 0},
39 : {180, 180, 0}, {180, 0, 180}, {180, 102, 0}, {0, 180, 180},
40 : {180, 180, 180}, {0, 0, 180}, {0, 180, 0}, {180, 0, 0},
41 : {180, 180, 0}, {180, 0, 180}, {180, 102, 0}, {0, 165, 165},
42 : {165, 165, 165}, {0, 0, 165}, {0, 165, 0}, {165, 0, 0},
43 : {165, 165, 0}, {165, 0, 165}, {165, 97, 0}, {0, 165, 165},
44 : {165, 165, 165}, {0, 0, 165}, {0, 165, 0}, {165, 0, 0},
45 : {165, 165, 0}, {165, 0, 165}, {165, 97, 0}, {0, 150, 150},
46 : {150, 150, 150}, {0, 0, 150}, {0, 150, 0}, {150, 0, 0},
47 : {150, 150, 0}, {150, 0, 150}, {150, 92, 0}, {0, 150, 150},
48 : {150, 150, 150}, {0, 0, 150}, {0, 150, 0}, {150, 0, 0},
49 : {150, 150, 0}, {150, 0, 150}, {150, 92, 0}, {0, 135, 135},
50 : {135, 135, 135}, {0, 0, 135}, {0, 135, 0}, {135, 0, 0},
51 : {135, 135, 0}, {135, 0, 135}, {135, 87, 0}, {0, 135, 135},
52 : {135, 135, 135}, {0, 0, 135}, {0, 135, 0}, {135, 0, 0},
53 : {135, 135, 0}, {135, 0, 135}, {135, 87, 0}, {0, 120, 120},
54 : {120, 120, 120}, {0, 0, 120}, {0, 120, 0}, {120, 0, 0},
55 : {120, 120, 0}, {120, 0, 120}, {120, 82, 0}, {0, 120, 120},
56 : {120, 120, 120}, {0, 0, 120}, {0, 120, 0}, {120, 0, 0},
57 : {120, 120, 0}, {120, 0, 120}, {120, 82, 0}, {0, 105, 105},
58 : {105, 105, 105}, {0, 0, 105}, {0, 105, 0}, {105, 0, 0},
59 : {105, 105, 0}, {105, 0, 105}, {105, 77, 0}, {0, 105, 105},
60 : {105, 105, 105}, {0, 0, 105}, {0, 105, 0}, {105, 0, 0},
61 : {105, 105, 0}, {105, 0, 105}, {105, 77, 0}, {0, 90, 90},
62 : {90, 90, 90}, {0, 0, 90}, {0, 90, 0}, {90, 0, 0},
63 : {90, 90, 0}, {90, 0, 90}, {90, 72, 0}, {0, 90, 90},
64 : {90, 90, 90}, {0, 0, 90}, {0, 90, 0}, {90, 0, 0},
65 : {90, 90, 0}, {90, 0, 90}, {90, 72, 0}, {0, 75, 75},
66 : {75, 75, 75}, {0, 0, 75}, {0, 75, 0}, {75, 0, 0},
67 : {75, 75, 0}, {75, 0, 75}, {75, 67, 0}, {0, 75, 75},
68 : {75, 75, 75}, {0, 0, 75}, {0, 75, 0}, {75, 0, 0},
69 : {75, 75, 0}, {75, 0, 75}, {75, 67, 0}, {0, 60, 60},
70 : {60, 60, 60}, {0, 0, 60}, {0, 60, 0}, {60, 0, 0},
71 : {60, 60, 0}, {60, 0, 60}, {60, 62, 0}, {0, 60, 60},
72 : {60, 60, 60}, {0, 0, 60}, {0, 60, 0}, {60, 0, 0},
73 : {60, 60, 0}, {60, 0, 60}, {60, 62, 0}, {0, 45, 45},
74 : {45, 45, 45}, {0, 0, 45}, {0, 45, 0}, {45, 0, 0},
75 : {45, 45, 0}, {45, 0, 45}, {45, 57, 0}, {0, 45, 45},
76 : {45, 45, 45}, {0, 0, 45}, {0, 45, 0}, {45, 0, 0},
77 : {45, 45, 0}, {45, 0, 45}, {45, 57, 0}, {0, 30, 30},
78 : {30, 30, 30}, {0, 0, 30}, {0, 30, 0}, {30, 0, 0},
79 : {30, 30, 0}, {30, 0, 30}, {30, 52, 0}, {0, 30, 30},
80 : {30, 30, 30}, {0, 0, 30}, {0, 30, 0}, {30, 0, 0},
81 : {30, 30, 0}, {30, 0, 30}, {192, 192, 192}, {28, 0, 100}};
82 :
83 : /************************************************************************/
84 : /* DGNLookupColor() */
85 : /************************************************************************/
86 :
87 : /**
88 : * Translate color index into RGB values.
89 : *
90 : * If no color table has yet been encountered in the file a hard-coded
91 : * "default" color table will be used. This seems to be what Microstation
92 : * uses as a color table when there isn't one in a DGN file but I am not
93 : * absolutely convinced it is appropriate.
94 : *
95 : * @param hDGN the file.
96 : * @param color_index the color index to lookup.
97 : * @param red location to put red component.
98 : * @param green location to put green component.
99 : * @param blue location to put blue component.
100 : *
101 : * @return TRUE on success or FALSE on failure. May fail if color_index is
102 : * out of range.
103 : */
104 :
105 288 : int DGNLookupColor(DGNHandle hDGN, int color_index, int *red, int *green,
106 : int *blue)
107 :
108 : {
109 288 : if (color_index < 0 || color_index > 255)
110 0 : return FALSE;
111 :
112 288 : DGNInfo *psDGN = (DGNInfo *)hDGN;
113 :
114 288 : if (!psDGN->got_color_table)
115 : {
116 288 : *red = abyDefaultPCT[color_index][0];
117 288 : *green = abyDefaultPCT[color_index][1];
118 288 : *blue = abyDefaultPCT[color_index][2];
119 : }
120 : else
121 : {
122 0 : *red = psDGN->color_table[color_index][0];
123 0 : *green = psDGN->color_table[color_index][1];
124 0 : *blue = psDGN->color_table[color_index][2];
125 : }
126 :
127 288 : return TRUE;
128 : }
129 :
130 : /************************************************************************/
131 : /* DGNGetShapeFillInfo() */
132 : /************************************************************************/
133 :
134 : /**
135 : * Fetch fill color for a shape.
136 : *
137 : * This method will check for a 0x0041 user attribute linkaged with fill
138 : * color information for the element. If found the function returns TRUE,
139 : * and places the fill color in *pnColor, otherwise FALSE is returned and
140 : * *pnColor is not updated.
141 : *
142 : * @param hDGN the file.
143 : * @param psElem the element.
144 : * @param pnColor the location to return the fill color.
145 : *
146 : * @return TRUE on success or FALSE on failure.
147 : */
148 :
149 10 : int DGNGetShapeFillInfo(DGNHandle hDGN, DGNElemCore *psElem, int *pnColor)
150 :
151 : {
152 10 : for (int iLink = 0; true; iLink++)
153 : {
154 17 : int nLinkType = 0;
155 17 : int nLinkSize = 0;
156 17 : unsigned char *pabyData = DGNGetLinkage(hDGN, psElem, iLink, &nLinkType,
157 : nullptr, nullptr, &nLinkSize);
158 17 : if (pabyData == nullptr)
159 10 : return FALSE;
160 :
161 11 : if (nLinkType == DGNLT_SHAPE_FILL && nLinkSize >= 9)
162 : {
163 4 : *pnColor = pabyData[8];
164 4 : return TRUE;
165 : }
166 7 : }
167 : }
168 :
169 : /************************************************************************/
170 : /* DGNGetAssocID() */
171 : /************************************************************************/
172 :
173 : /**
174 : * Fetch association id for an element.
175 : *
176 : * This method will check if an element has an association id, and if so
177 : * returns it, otherwise returning -1. Association ids are kept as a
178 : * user attribute linkage where present.
179 : *
180 : * @param hDGN the file.
181 : * @param psElem the element.
182 : *
183 : * @return The id or -1 on failure.
184 : */
185 :
186 0 : int DGNGetAssocID(DGNHandle hDGN, DGNElemCore *psElem)
187 :
188 : {
189 0 : for (int iLink = 0; true; iLink++)
190 : {
191 0 : int nLinkType = 0;
192 0 : int nLinkSize = 0;
193 0 : unsigned char *pabyData = DGNGetLinkage(hDGN, psElem, iLink, &nLinkType,
194 : nullptr, nullptr, &nLinkSize);
195 0 : if (pabyData == nullptr)
196 0 : return -1;
197 :
198 0 : if (nLinkType == DGNLT_ASSOC_ID && nLinkSize >= 8)
199 : {
200 0 : return pabyData[4] + pabyData[5] * 256 + pabyData[6] * 256 * 256 +
201 0 : pabyData[7] * 256 * 256 * 256;
202 : }
203 0 : }
204 : }
205 :
206 : /************************************************************************/
207 : /* DGNRad50ToAscii() */
208 : /* */
209 : /* Convert one 16-bits Radix-50 to ASCII (3 chars). */
210 : /************************************************************************/
211 :
212 0 : void DGNRad50ToAscii(unsigned short sRad50, char *str)
213 : {
214 0 : char ch = '\0';
215 0 : unsigned short saQuots[3] = {1600, 40, 1};
216 :
217 0 : for (int i = 0; i < 3; i++)
218 : {
219 0 : unsigned short sValue = sRad50;
220 0 : sValue /= saQuots[i];
221 : /* Map 0..39 to ASCII */
222 0 : if (sValue == 0)
223 0 : ch = ' '; /* space */
224 0 : else if (/*sValue >= 1 &&*/ sValue <= 26)
225 0 : ch = (char)(sValue - 1 + 'A'); /* printable alpha A..Z */
226 0 : else if (sValue == 27)
227 0 : ch = '$'; /* dollar */
228 0 : else if (sValue == 28)
229 0 : ch = '.'; /* period */
230 0 : else if (sValue == 29)
231 0 : ch = ' '; /* unused char, emit a space instead */
232 0 : else if (/*sValue >= 30 &&*/ sValue <= 39)
233 0 : ch = (char)(sValue - 30 + '0'); /* digit 0..9 */
234 0 : *str = ch;
235 0 : str++;
236 :
237 0 : sRad50 -= (sValue * saQuots[i]);
238 : }
239 :
240 : /* Do zero-terminate */
241 0 : *str = '\0';
242 0 : }
243 :
244 : /************************************************************************/
245 : /* DGNAsciiToRad50() */
246 : /************************************************************************/
247 :
248 0 : void DGNAsciiToRad50(const char *str, unsigned short *pRad50)
249 :
250 : {
251 0 : unsigned short rad50 = 0;
252 :
253 0 : for (int i = 0; i < 3; i++)
254 : {
255 0 : if (i >= (int)strlen(str))
256 : {
257 0 : rad50 = rad50 * 40;
258 0 : continue;
259 : }
260 :
261 0 : unsigned short value = 0;
262 :
263 0 : if (str[i] == '$')
264 0 : value = 27;
265 0 : else if (str[i] == '.')
266 0 : value = 28;
267 0 : else if (str[i] == ' ')
268 0 : value = 29;
269 0 : else if (str[i] >= '0' && str[i] <= '9')
270 0 : value = str[i] - '0' + 30;
271 0 : else if (str[i] >= 'a' && str[i] <= 'z')
272 0 : value = str[i] - 'a' + 1;
273 0 : else if (str[i] >= 'A' && str[i] <= 'Z')
274 0 : value = str[i] - 'A' + 1;
275 : else
276 0 : value = 0;
277 :
278 0 : rad50 = rad50 * 40 + value;
279 : }
280 :
281 0 : *pRad50 = rad50;
282 0 : }
283 :
284 : /************************************************************************/
285 : /* DGNGetLineStyleName() */
286 : /* */
287 : /* Read the line style name from symbol table. */
288 : /* The got name is stored in psLine. */
289 : /************************************************************************/
290 : #ifdef unused
291 : int DGNGetLineStyleName(CPL_UNUSED DGNInfo *psDGN, DGNElemMultiPoint *psLine,
292 : char szLineStyle[65])
293 : {
294 : if (psLine->core.attr_bytes > 0 && psLine->core.attr_data[1] == 0x10 &&
295 : psLine->core.attr_data[2] == 0xf9 && psLine->core.attr_data[3] == 0x79)
296 : {
297 : #ifdef notdef
298 : for (int i = 0; i < SYMBOL_TABLE_SIZE; i++)
299 : {
300 : if (*((unsigned char *)psDGN->buffer + 0x21e5 + i) ==
301 : psLine->core.attr_data[4] &&
302 : *((unsigned char *)psDGN->buffer + 0x21e6 + i) ==
303 : psLine->core.attr_data[5] &&
304 : *((unsigned char *)psDGN->buffer + 0x21e7 + i) ==
305 : psLine->core.attr_data[6] &&
306 : *((unsigned char *)psDGN->buffer + 0x21e8 + i) ==
307 : psLine->core.attr_data[7])
308 : {
309 : memcpy(szLineStyle, (unsigned char *)psDGN->buffer + 0x21e9 + i,
310 : 64);
311 : szLineStyle[64] = '\0';
312 : return TRUE;
313 : }
314 : }
315 : #endif
316 : return FALSE;
317 : }
318 : else
319 : {
320 : szLineStyle[0] = '\0';
321 : return FALSE;
322 : }
323 : }
324 : #endif
325 :
326 : /************************************************************************/
327 : /* DGNDumpElement() */
328 : /************************************************************************/
329 :
330 : /**
331 : * Emit textual report of an element.
332 : *
333 : * This function exists primarily for debugging, and will produce a textual
334 : * report about any element type to the designated file.
335 : *
336 : * @param hDGN the file from which the element originated.
337 : * @param psElement the element to report on.
338 : * @param fp the file (such as stdout) to report the element information to.
339 : */
340 :
341 0 : void DGNDumpElement(DGNHandle hDGN, const DGNElemCore *psElement, FILE *fp)
342 :
343 : {
344 0 : DGNInfo *psInfo = (DGNInfo *)hDGN;
345 :
346 0 : fprintf(fp, "\n");
347 0 : fprintf(fp, "Element:%-12s Level:%2d id:%-6d ",
348 0 : DGNTypeToName(psElement->type), psElement->level,
349 0 : psElement->element_id);
350 :
351 0 : if (psElement->complex)
352 0 : fprintf(fp, "(Complex) ");
353 :
354 0 : if (psElement->deleted)
355 0 : fprintf(fp, "(DELETED) ");
356 :
357 0 : fprintf(fp, "\n");
358 :
359 0 : fprintf(fp, " offset=%d size=%d bytes\n", psElement->offset,
360 0 : psElement->size);
361 :
362 0 : fprintf(fp, " graphic_group:%-3d color:%d weight:%d style:%d\n",
363 0 : psElement->graphic_group, psElement->color, psElement->weight,
364 0 : psElement->style);
365 :
366 0 : if (psElement->properties != 0)
367 : {
368 0 : fprintf(fp, " properties=%d", psElement->properties);
369 0 : if (psElement->properties & DGNPF_HOLE)
370 0 : fprintf(fp, ",HOLE");
371 0 : if (psElement->properties & DGNPF_SNAPPABLE)
372 0 : fprintf(fp, ",SNAPPABLE");
373 0 : if (psElement->properties & DGNPF_PLANAR)
374 0 : fprintf(fp, ",PLANAR");
375 0 : if (psElement->properties & DGNPF_ORIENTATION)
376 0 : fprintf(fp, ",ORIENTATION");
377 0 : if (psElement->properties & DGNPF_ATTRIBUTES)
378 0 : fprintf(fp, ",ATTRIBUTES");
379 0 : if (psElement->properties & DGNPF_MODIFIED)
380 0 : fprintf(fp, ",MODIFIED");
381 0 : if (psElement->properties & DGNPF_NEW)
382 0 : fprintf(fp, ",NEW");
383 0 : if (psElement->properties & DGNPF_LOCKED)
384 0 : fprintf(fp, ",LOCKED");
385 :
386 0 : int nClass = psElement->properties & DGNPF_CLASS;
387 0 : if (nClass == DGNC_PATTERN_COMPONENT)
388 0 : fprintf(fp, ",PATTERN_COMPONENT");
389 0 : else if (nClass == DGNC_CONSTRUCTION_ELEMENT)
390 0 : fprintf(fp, ",CONSTRUCTION ELEMENT");
391 0 : else if (nClass == DGNC_DIMENSION_ELEMENT)
392 0 : fprintf(fp, ",DIMENSION ELEMENT");
393 0 : else if (nClass == DGNC_PRIMARY_RULE_ELEMENT)
394 0 : fprintf(fp, ",PRIMARY RULE ELEMENT");
395 0 : else if (nClass == DGNC_LINEAR_PATTERNED_ELEMENT)
396 0 : fprintf(fp, ",LINEAR PATTERNED ELEMENT");
397 0 : else if (nClass == DGNC_CONSTRUCTION_RULE_ELEMENT)
398 0 : fprintf(fp, ",CONSTRUCTION_RULE_ELEMENT");
399 :
400 0 : fprintf(fp, "\n");
401 : }
402 :
403 0 : switch (psElement->stype)
404 : {
405 0 : case DGNST_MULTIPOINT:
406 : {
407 0 : auto psLine =
408 : reinterpret_cast<const DGNElemMultiPoint *>(psElement);
409 :
410 0 : for (int i = 0; i < psLine->num_vertices; i++)
411 0 : fprintf(fp, " (%.6f,%.6f,%.6f)\n", psLine->vertices[i].x,
412 0 : psLine->vertices[i].y, psLine->vertices[i].z);
413 : }
414 0 : break;
415 :
416 0 : case DGNST_CELL_HEADER:
417 : {
418 0 : auto psCell =
419 : reinterpret_cast<const DGNElemCellHeader *>(psElement);
420 :
421 0 : fprintf(
422 : fp,
423 : " totlength=%d, name=%s, class=%x, levels=%02x%02x%02x%02x\n",
424 0 : psCell->totlength, psCell->name, psCell->cclass,
425 0 : psCell->levels[0], psCell->levels[1], psCell->levels[2],
426 0 : psCell->levels[3]);
427 0 : fprintf(fp,
428 : " rnglow=(%.5f,%.5f,%.5f)\n"
429 : " rnghigh=(%.5f,%.5f,%.5f)\n",
430 0 : psCell->rnglow.x, psCell->rnglow.y, psCell->rnglow.z,
431 0 : psCell->rnghigh.x, psCell->rnghigh.y, psCell->rnghigh.z);
432 0 : fprintf(fp, " origin=(%.5f,%.5f,%.5f)\n", psCell->origin.x,
433 0 : psCell->origin.y, psCell->origin.z);
434 :
435 0 : if (psInfo->dimension == 2)
436 0 : fprintf(fp, " xscale=%g, yscale=%g, rotation=%g\n",
437 0 : psCell->xscale, psCell->yscale, psCell->rotation);
438 : else
439 0 : fprintf(fp, " trans=%g,%g,%g,%g,%g,%g,%g,%g,%g\n",
440 0 : psCell->trans[0], psCell->trans[1], psCell->trans[2],
441 0 : psCell->trans[3], psCell->trans[4], psCell->trans[5],
442 0 : psCell->trans[6], psCell->trans[7], psCell->trans[8]);
443 : }
444 0 : break;
445 :
446 0 : case DGNST_CELL_LIBRARY:
447 : {
448 0 : auto psCell =
449 : reinterpret_cast<const DGNElemCellLibrary *>(psElement);
450 :
451 0 : fprintf(
452 : fp,
453 : " name=%s, class=%x, levels=%02x%02x%02x%02x, numwords=%d\n",
454 0 : psCell->name, psCell->cclass, psCell->levels[0],
455 0 : psCell->levels[1], psCell->levels[2], psCell->levels[3],
456 0 : psCell->numwords);
457 0 : fprintf(fp, " dispsymb=%d, description=%s\n", psCell->dispsymb,
458 0 : psCell->description);
459 : }
460 0 : break;
461 :
462 0 : case DGNST_SHARED_CELL_DEFN:
463 : {
464 0 : auto psShared =
465 : reinterpret_cast<const DGNElemSharedCellDefn *>(psElement);
466 :
467 0 : fprintf(fp, " totlength=%d\n", psShared->totlength);
468 : }
469 0 : break;
470 :
471 0 : case DGNST_ARC:
472 : {
473 0 : auto psArc = reinterpret_cast<const DGNElemArc *>(psElement);
474 :
475 0 : if (psInfo->dimension == 2)
476 0 : fprintf(fp, " origin=(%.5f,%.5f), rotation=%f\n",
477 0 : psArc->origin.x, psArc->origin.y, psArc->rotation);
478 : else
479 0 : fprintf(fp, " origin=(%.5f,%.5f,%.5f), quat=%d,%d,%d,%d\n",
480 0 : psArc->origin.x, psArc->origin.y, psArc->origin.z,
481 0 : psArc->quat[0], psArc->quat[1], psArc->quat[2],
482 0 : psArc->quat[3]);
483 0 : fprintf(fp, " axes=(%.5f,%.5f), start angle=%f, sweep=%f\n",
484 0 : psArc->primary_axis, psArc->secondary_axis, psArc->startang,
485 0 : psArc->sweepang);
486 : }
487 0 : break;
488 :
489 0 : case DGNST_TEXT:
490 : {
491 0 : auto psText = reinterpret_cast<const DGNElemText *>(psElement);
492 :
493 0 : fprintf(fp,
494 : " origin=(%.5f,%.5f), rotation=%f\n"
495 : " font=%d, just=%d, length_mult=%g, height_mult=%g\n"
496 : " string = \"%s\"\n",
497 0 : psText->origin.x, psText->origin.y, psText->rotation,
498 0 : psText->font_id, psText->justification, psText->length_mult,
499 0 : psText->height_mult, psText->string);
500 : }
501 0 : break;
502 :
503 0 : case DGNST_TEXT_NODE:
504 : {
505 0 : auto psNode = reinterpret_cast<const DGNElemTextNode *>(psElement);
506 :
507 0 : fprintf(fp, " totlength=%d, num_texts=%d\n", psNode->totlength,
508 0 : psNode->numelems);
509 0 : fprintf(fp,
510 : " origin=(%.5f,%.5f), rotation=%f\n"
511 : " font=%d, just=%d, length_mult=%g, height_mult=%g\n",
512 0 : psNode->origin.x, psNode->origin.y, psNode->rotation,
513 0 : psNode->font_id, psNode->justification, psNode->length_mult,
514 0 : psNode->height_mult);
515 0 : fprintf(fp, " max_length=%d, used=%d,", psNode->max_length,
516 0 : psNode->max_used);
517 0 : fprintf(fp, " node_number=%d\n", psNode->node_number);
518 : }
519 0 : break;
520 :
521 0 : case DGNST_COMPLEX_HEADER:
522 : {
523 0 : auto psHdr =
524 : reinterpret_cast<const DGNElemComplexHeader *>(psElement);
525 :
526 0 : fprintf(fp, " totlength=%d, numelems=%d\n", psHdr->totlength,
527 0 : psHdr->numelems);
528 0 : if (psElement->type == DGNT_3DSOLID_HEADER ||
529 0 : psElement->type == DGNT_3DSURFACE_HEADER)
530 : {
531 0 : fprintf(fp, " surftype=%d, boundelms=%d\n", psHdr->surftype,
532 0 : psHdr->boundelms);
533 : }
534 : }
535 0 : break;
536 :
537 0 : case DGNST_COLORTABLE:
538 : {
539 0 : auto psCT = reinterpret_cast<const DGNElemColorTable *>(psElement);
540 :
541 0 : fprintf(fp, " screen_flag: %d\n", psCT->screen_flag);
542 0 : for (int i = 0; i < 256; i++)
543 : {
544 0 : fprintf(fp, " %3d: (%3u,%3u,%3u)\n", i, psCT->color_info[i][0],
545 0 : psCT->color_info[i][1], psCT->color_info[i][2]);
546 : }
547 : }
548 0 : break;
549 :
550 0 : case DGNST_TCB:
551 : {
552 0 : auto psTCB = reinterpret_cast<const DGNElemTCB *>(psElement);
553 :
554 0 : fprintf(fp, " dimension = %d\n", psTCB->dimension);
555 0 : fprintf(fp, " uor_per_subunit = %ld, subunits = `%s'\n",
556 0 : psTCB->uor_per_subunit, psTCB->sub_units);
557 0 : fprintf(fp, " subunits_per_master = %ld, master units = `%s'\n",
558 0 : psTCB->subunits_per_master, psTCB->master_units);
559 0 : fprintf(fp, " origin = (%.5f,%.5f,%.5f)\n", psTCB->origin_x,
560 0 : psTCB->origin_y, psTCB->origin_z);
561 :
562 0 : for (int iView = 0; iView < 8; iView++)
563 : {
564 0 : const DGNViewInfo *psView = psTCB->views + iView;
565 :
566 0 : fprintf(fp,
567 : " View%d: flags=%04X, "
568 : "levels=%02X%02X%02X%02X%02X%02X%02X%02X\n",
569 0 : iView, psView->flags, psView->levels[0],
570 0 : psView->levels[1], psView->levels[2], psView->levels[3],
571 0 : psView->levels[4], psView->levels[5], psView->levels[6],
572 0 : psView->levels[7]);
573 0 : fprintf(fp,
574 : " origin=(%g,%g,%g)\n delta=(%g,%g,%g)\n",
575 0 : psView->origin.x, psView->origin.y, psView->origin.z,
576 0 : psView->delta.x, psView->delta.y, psView->delta.z);
577 0 : fprintf(fp, " trans=(%g,%g,%g,%g,%g,%g,%g,%g,%g)\n",
578 0 : psView->transmatrx[0], psView->transmatrx[1],
579 0 : psView->transmatrx[2], psView->transmatrx[3],
580 0 : psView->transmatrx[4], psView->transmatrx[5],
581 0 : psView->transmatrx[6], psView->transmatrx[7],
582 0 : psView->transmatrx[8]);
583 : }
584 : }
585 0 : break;
586 :
587 0 : case DGNST_TAG_SET:
588 : {
589 0 : auto psTagSet = reinterpret_cast<const DGNElemTagSet *>(psElement);
590 :
591 0 : fprintf(fp, " tagSetName=%s, tagSet=%d, tagCount=%d, flags=%d\n",
592 0 : psTagSet->tagSetName, psTagSet->tagSet, psTagSet->tagCount,
593 0 : psTagSet->flags);
594 0 : for (int iTag = 0; iTag < psTagSet->tagCount; iTag++)
595 : {
596 0 : const DGNTagDef *psTagDef = psTagSet->tagList + iTag;
597 :
598 0 : fprintf(fp, " %d: name=%s, type=%d, prompt=%s", psTagDef->id,
599 0 : psTagDef->name, psTagDef->type, psTagDef->prompt);
600 0 : if (psTagDef->type == 1)
601 0 : fprintf(fp, ", default=%s\n",
602 0 : psTagDef->defaultValue.string);
603 0 : else if (psTagDef->type == 3 || psTagDef->type == 5)
604 0 : fprintf(fp, ", default=%d\n",
605 0 : psTagDef->defaultValue.integer);
606 0 : else if (psTagDef->type == 4)
607 0 : fprintf(fp, ", default=%g\n", psTagDef->defaultValue.real);
608 : else
609 0 : fprintf(fp, ", default=<unknown>\n");
610 : }
611 : }
612 0 : break;
613 :
614 0 : case DGNST_TAG_VALUE:
615 : {
616 0 : auto psTag = reinterpret_cast<const DGNElemTagValue *>(psElement);
617 :
618 0 : fprintf(fp, " tagType=%d, tagSet=%d, tagIndex=%d, tagLength=%d\n",
619 0 : psTag->tagType, psTag->tagSet, psTag->tagIndex,
620 0 : psTag->tagLength);
621 0 : if (psTag->tagType == 1)
622 0 : fprintf(fp, " value=%s\n", psTag->tagValue.string);
623 0 : else if (psTag->tagType == 3)
624 0 : fprintf(fp, " value=%d\n", psTag->tagValue.integer);
625 0 : else if (psTag->tagType == 4)
626 0 : fprintf(fp, " value=%g\n", psTag->tagValue.real);
627 : }
628 0 : break;
629 :
630 0 : case DGNST_CONE:
631 : {
632 0 : auto psCone = reinterpret_cast<const DGNElemCone *>(psElement);
633 :
634 0 : fprintf(fp,
635 : " center_1=(%g,%g,%g) radius=%g\n"
636 : " center_2=(%g,%g,%g) radius=%g\n"
637 : " quat=%d,%d,%d,%d unknown=%d\n",
638 0 : psCone->center_1.x, psCone->center_1.y, psCone->center_1.z,
639 0 : psCone->radius_1, psCone->center_2.x, psCone->center_2.y,
640 0 : psCone->center_2.z, psCone->radius_2, psCone->quat[0],
641 0 : psCone->quat[1], psCone->quat[2], psCone->quat[3],
642 0 : psCone->unknown);
643 : }
644 0 : break;
645 :
646 0 : case DGNST_BSPLINE_SURFACE_HEADER:
647 : {
648 0 : auto psSpline =
649 : reinterpret_cast<const DGNElemBSplineSurfaceHeader *>(
650 : psElement);
651 :
652 0 : fprintf(fp, " desc_words=%ld, curve type=%u\n",
653 0 : psSpline->desc_words, psSpline->curve_type);
654 :
655 0 : fprintf(fp, " U: properties=%02x", psSpline->u_properties);
656 0 : if (psSpline->u_properties != 0)
657 : {
658 0 : if (psSpline->u_properties & DGNBSC_CURVE_DISPLAY)
659 : {
660 0 : fprintf(fp, ",CURVE_DISPLAY");
661 : }
662 0 : if (psSpline->u_properties & DGNBSC_POLY_DISPLAY)
663 : {
664 0 : fprintf(fp, ",POLY_DISPLAY");
665 : }
666 0 : if (psSpline->u_properties & DGNBSC_RATIONAL)
667 : {
668 0 : fprintf(fp, ",RATIONAL");
669 : }
670 0 : if (psSpline->u_properties & DGNBSC_CLOSED)
671 : {
672 0 : fprintf(fp, ",CLOSED");
673 : }
674 : }
675 0 : fprintf(fp, "\n");
676 0 : fprintf(fp, " order=%u\n %d poles, %d knots, %d rule lines\n",
677 0 : psSpline->u_order, psSpline->num_poles_u,
678 0 : psSpline->num_knots_u, psSpline->rule_lines_u);
679 :
680 0 : fprintf(fp, " V: properties=%02x", psSpline->v_properties);
681 0 : if (psSpline->v_properties != 0)
682 : {
683 0 : if (psSpline->v_properties & DGNBSS_ARC_SPACING)
684 : {
685 0 : fprintf(fp, ",ARC_SPACING");
686 : }
687 0 : if (psSpline->v_properties & DGNBSS_CLOSED)
688 : {
689 0 : fprintf(fp, ",CLOSED");
690 : }
691 : }
692 0 : fprintf(fp, "\n");
693 0 : fprintf(fp, " order=%u\n %d poles, %d knots, %d rule lines\n",
694 0 : psSpline->v_order, psSpline->num_poles_v,
695 0 : psSpline->num_knots_v, psSpline->rule_lines_v);
696 : }
697 0 : break;
698 :
699 0 : case DGNST_BSPLINE_CURVE_HEADER:
700 : {
701 0 : auto psSpline =
702 : reinterpret_cast<const DGNElemBSplineCurveHeader *>(psElement);
703 :
704 0 : fprintf(fp,
705 : " desc_words=%ld, curve type=%u\n"
706 : " properties=%02x",
707 0 : psSpline->desc_words, psSpline->curve_type,
708 0 : psSpline->properties);
709 0 : if (psSpline->properties != 0)
710 : {
711 0 : if (psSpline->properties & DGNBSC_CURVE_DISPLAY)
712 : {
713 0 : fprintf(fp, ",CURVE_DISPLAY");
714 : }
715 0 : if (psSpline->properties & DGNBSC_POLY_DISPLAY)
716 : {
717 0 : fprintf(fp, ",POLY_DISPLAY");
718 : }
719 0 : if (psSpline->properties & DGNBSC_RATIONAL)
720 : {
721 0 : fprintf(fp, ",RATIONAL");
722 : }
723 0 : if (psSpline->properties & DGNBSC_CLOSED)
724 : {
725 0 : fprintf(fp, ",CLOSED");
726 : }
727 : }
728 0 : fprintf(fp, "\n");
729 0 : fprintf(fp, " order=%u\n %d poles, %d knots\n", psSpline->order,
730 0 : psSpline->num_poles, psSpline->num_knots);
731 : }
732 0 : break;
733 :
734 0 : case DGNST_BSPLINE_SURFACE_BOUNDARY:
735 : {
736 0 : auto psBounds =
737 : reinterpret_cast<const DGNElemBSplineSurfaceBoundary *>(
738 : psElement);
739 :
740 0 : fprintf(fp, " boundary number=%d, # vertices=%d\n",
741 0 : psBounds->number, psBounds->numverts);
742 0 : for (int i = 0; i < psBounds->numverts; i++)
743 : {
744 0 : fprintf(fp, " (%.6f,%.6f)\n", psBounds->vertices[i].x,
745 0 : psBounds->vertices[i].y);
746 : }
747 : }
748 0 : break;
749 :
750 0 : case DGNST_KNOT_WEIGHT:
751 : {
752 0 : auto psArray =
753 : reinterpret_cast<const DGNElemKnotWeight *>(psElement);
754 :
755 0 : const int numelems = (psArray->core.size - 36) / 4;
756 0 : for (int i = 0; i < numelems; i++)
757 : {
758 0 : fprintf(fp, " %.6f\n", psArray->array[i]);
759 : }
760 : }
761 0 : break;
762 :
763 0 : default:
764 0 : break;
765 : }
766 :
767 0 : if (psElement->attr_bytes > 0)
768 : {
769 0 : fprintf(fp, "Attributes (%d bytes):\n", psElement->attr_bytes);
770 :
771 0 : for (int iLink = 0; true; iLink++)
772 : {
773 0 : int nLinkType = 0;
774 0 : int nEntityNum = 0;
775 0 : int nMSLink = 0;
776 0 : int nLinkSize = 0;
777 : // coverity[tained_data]
778 : unsigned char *pabyData =
779 0 : DGNGetLinkage(hDGN, psElement, iLink, &nLinkType, &nEntityNum,
780 : &nMSLink, &nLinkSize);
781 0 : if (pabyData == nullptr)
782 0 : break;
783 :
784 0 : fprintf(fp, "Type=0x%04x", nLinkType);
785 0 : if (nMSLink != 0 || nEntityNum != 0)
786 0 : fprintf(fp, ", EntityNum=%d, MSLink=%d", nEntityNum, nMSLink);
787 :
788 0 : int nBytes = static_cast<int>(psElement->attr_data +
789 0 : psElement->attr_bytes - pabyData);
790 0 : if (nBytes < nLinkSize)
791 : {
792 0 : CPLError(CE_Failure, CPLE_AppDefined,
793 : "Corrupt linkage, element id:%d, link:%d",
794 0 : psElement->element_id, iLink);
795 0 : fprintf(fp, " (Corrupt, declared size: %d, assuming size: %d)",
796 : nLinkSize, nBytes);
797 0 : nLinkSize = nBytes;
798 : }
799 0 : fprintf(fp, "\n 0x");
800 :
801 0 : for (int i = 0; i < nLinkSize; i++)
802 0 : fprintf(fp, "%02x", pabyData[i]);
803 0 : fprintf(fp, "\n");
804 0 : }
805 : }
806 0 : }
807 :
808 : /************************************************************************/
809 : /* DGNTypeToName() */
810 : /************************************************************************/
811 :
812 : /**
813 : * Convert type to name.
814 : *
815 : * Returns a human readable name for an element type such as DGNT_LINE.
816 : *
817 : * @param nType the DGNT_* type code to translate.
818 : *
819 : * @return a pointer to an internal string with the translation. This string
820 : * should not be modified or freed.
821 : */
822 :
823 0 : const char *DGNTypeToName(int nType)
824 :
825 : {
826 : static char szNumericResult[16] = {};
827 :
828 0 : switch (nType)
829 : {
830 0 : case DGNT_CELL_LIBRARY:
831 0 : return "Cell Library";
832 :
833 0 : case DGNT_CELL_HEADER:
834 0 : return "Cell Header";
835 :
836 0 : case DGNT_LINE:
837 0 : return "Line";
838 :
839 0 : case DGNT_LINE_STRING:
840 0 : return "Line String";
841 :
842 0 : case DGNT_POINT_STRING:
843 0 : return "Point String";
844 :
845 0 : case DGNT_GROUP_DATA:
846 0 : return "Group Data";
847 :
848 0 : case DGNT_SHAPE:
849 0 : return "Shape";
850 :
851 0 : case DGNT_TEXT_NODE:
852 0 : return "Text Node";
853 :
854 0 : case DGNT_DIGITIZER_SETUP:
855 0 : return "Digitizer Setup";
856 :
857 0 : case DGNT_TCB:
858 0 : return "TCB";
859 :
860 0 : case DGNT_LEVEL_SYMBOLOGY:
861 0 : return "Level Symbology";
862 :
863 0 : case DGNT_CURVE:
864 0 : return "Curve";
865 :
866 0 : case DGNT_COMPLEX_CHAIN_HEADER:
867 0 : return "Complex Chain Header";
868 :
869 0 : case DGNT_COMPLEX_SHAPE_HEADER:
870 0 : return "Complex Shape Header";
871 :
872 0 : case DGNT_ELLIPSE:
873 0 : return "Ellipse";
874 :
875 0 : case DGNT_ARC:
876 0 : return "Arc";
877 :
878 0 : case DGNT_TEXT:
879 0 : return "Text";
880 :
881 0 : case DGNT_BSPLINE_POLE:
882 0 : return "B-Spline Pole";
883 :
884 0 : case DGNT_BSPLINE_SURFACE_HEADER:
885 0 : return "B-Spline Surface Header";
886 :
887 0 : case DGNT_BSPLINE_SURFACE_BOUNDARY:
888 0 : return "B-Spline Surface Boundary";
889 :
890 0 : case DGNT_BSPLINE_KNOT:
891 0 : return "B-Spline Knot";
892 :
893 0 : case DGNT_BSPLINE_CURVE_HEADER:
894 0 : return "B-Spline Curve Header";
895 :
896 0 : case DGNT_BSPLINE_WEIGHT_FACTOR:
897 0 : return "B-Spline Weight Factor";
898 :
899 0 : case DGNT_APPLICATION_ELEM:
900 0 : return "Application Element";
901 :
902 0 : case DGNT_SHARED_CELL_DEFN:
903 0 : return "Shared Cell Definition";
904 :
905 0 : case DGNT_SHARED_CELL_ELEM:
906 0 : return "Shared Cell Element";
907 :
908 0 : case DGNT_TAG_VALUE:
909 0 : return "Tag Value";
910 :
911 0 : case DGNT_CONE:
912 0 : return "Cone";
913 :
914 0 : case DGNT_3DSURFACE_HEADER:
915 0 : return "3D Surface Header";
916 :
917 0 : case DGNT_3DSOLID_HEADER:
918 0 : return "3D Solid Header";
919 :
920 0 : default:
921 0 : snprintf(szNumericResult, sizeof(szNumericResult), "%d", nType);
922 0 : return szNumericResult;
923 : }
924 : }
925 :
926 : /************************************************************************/
927 : /* DGNGetAttrLinkSize() */
928 : /************************************************************************/
929 :
930 : /**
931 : * Get attribute linkage size.
932 : *
933 : * Returns the size, in bytes, of the attribute linkage starting at byte
934 : * offset nOffset. On failure a value of 0 is returned.
935 : *
936 : * @param hDGN the file from which the element originated.
937 : * @param psElement the element to report on.
938 : * @param nOffset byte offset within attribute data of linkage to check.
939 : *
940 : * @return size of linkage in bytes, or zero.
941 : */
942 :
943 503 : int DGNGetAttrLinkSize(CPL_UNUSED DGNHandle hDGN, const DGNElemCore *psElement,
944 : int nOffset)
945 : {
946 503 : if (psElement->attr_bytes < nOffset + 4)
947 336 : return 0;
948 :
949 : /* DMRS Linkage */
950 167 : if ((psElement->attr_data[nOffset + 0] == 0 &&
951 11 : psElement->attr_data[nOffset + 1] == 0) ||
952 156 : (psElement->attr_data[nOffset + 0] == 0 &&
953 0 : psElement->attr_data[nOffset + 1] == 0x80))
954 11 : return 8;
955 :
956 : /* If low order bit of second byte is set, first byte is length */
957 156 : if (psElement->attr_data[nOffset + 1] & 0x10)
958 : {
959 : // Useless comparison but to please Coverity Scan
960 156 : const int ret = psElement->attr_data[nOffset + 0] * 2 + 2;
961 156 : constexpr int MAX_ALLOWED = 255 * 2 + 2;
962 156 : if (ret < MAX_ALLOWED)
963 156 : return ret;
964 0 : return MAX_ALLOWED;
965 : }
966 :
967 : /* unknown */
968 0 : return 0;
969 : }
970 :
971 : /************************************************************************/
972 : /* DGNGetLinkage() */
973 : /************************************************************************/
974 :
975 : /**
976 : * Returns requested linkage raw data.
977 : *
978 : * A pointer to the raw data for the requested attribute linkage is returned
979 : * as well as (potentially) various information about the linkage including
980 : * the linkage type, database entity number and MSLink value, and the length
981 : * of the raw linkage data in bytes.
982 : *
983 : * If the requested linkage (iIndex) does not exist a value of zero is
984 : * returned.
985 : *
986 : * The entity number is (loosely speaking) the index of the table within
987 : * the current database to which the MSLINK value will refer. The entity
988 : * number should be used to lookup the table name in the MSCATALOG table.
989 : * The MSLINK value is the key value for the record in the target table.
990 : *
991 : * @param hDGN the file from which the element originated.
992 : * @param psElement the element to report on.
993 : * @param iIndex the zero based index of the linkage to fetch.
994 : * @param pnLinkageType variable to return linkage type. This may be one of
995 : * the predefined DGNLT_ values or a different value. This pointer may be NULL.
996 : * @param pnEntityNum variable to return the entity number in or NULL if not
997 : * required.
998 : * @param pnMSLink variable to return the MSLINK value in, or NULL if not
999 : * required.
1000 : * @param pnLength variable to returned the linkage size in bytes or NULL.
1001 : *
1002 : * @return pointer to raw internal linkage data. This data should not be
1003 : * altered or freed. NULL returned on failure.
1004 : */
1005 :
1006 420 : unsigned char *DGNGetLinkage(DGNHandle hDGN, const DGNElemCore *psElement,
1007 : int iIndex, int *pnLinkageType, int *pnEntityNum,
1008 : int *pnMSLink, int *pnLength)
1009 :
1010 : {
1011 420 : int nLinkSize = 0;
1012 :
1013 420 : for (int iLinkage = 0, nAttrOffset = 0;
1014 503 : (nLinkSize = DGNGetAttrLinkSize(hDGN, psElement, nAttrOffset)) != 0;
1015 83 : iLinkage++, nAttrOffset += nLinkSize)
1016 : {
1017 167 : if (iLinkage == iIndex)
1018 : {
1019 84 : if (nLinkSize <= 4)
1020 : {
1021 0 : CPLError(CE_Failure, CPLE_AssertionFailed, "nLinkSize <= 4");
1022 0 : return nullptr;
1023 : }
1024 84 : if (nLinkSize + nAttrOffset > psElement->attr_bytes)
1025 : {
1026 0 : CPLError(CE_Failure, CPLE_AssertionFailed,
1027 : "nLinkSize + nAttrOffset > psElement->attr_bytes");
1028 0 : return nullptr;
1029 : }
1030 :
1031 84 : int nLinkageType = 0;
1032 84 : int nEntityNum = 0;
1033 84 : int nMSLink = 0;
1034 84 : if (psElement->attr_bytes >= nAttrOffset + 7 &&
1035 84 : psElement->attr_data[nAttrOffset + 0] == 0x00 &&
1036 4 : (psElement->attr_data[nAttrOffset + 1] == 0x00 ||
1037 0 : psElement->attr_data[nAttrOffset + 1] == 0x80))
1038 : {
1039 4 : nLinkageType = DGNLT_DMRS;
1040 4 : nEntityNum = psElement->attr_data[nAttrOffset + 2] +
1041 4 : psElement->attr_data[nAttrOffset + 3] * 256;
1042 4 : nMSLink = psElement->attr_data[nAttrOffset + 4] +
1043 4 : psElement->attr_data[nAttrOffset + 5] * 256 +
1044 4 : psElement->attr_data[nAttrOffset + 6] * 65536;
1045 : }
1046 80 : else if (psElement->attr_bytes >= nAttrOffset + 4)
1047 80 : nLinkageType = psElement->attr_data[nAttrOffset + 2] +
1048 80 : psElement->attr_data[nAttrOffset + 3] * 256;
1049 :
1050 : // Possibly an external database linkage?
1051 84 : if (nLinkSize == 16 && nLinkageType != DGNLT_SHAPE_FILL &&
1052 72 : psElement->attr_bytes >= nAttrOffset + 12)
1053 : {
1054 72 : nEntityNum = psElement->attr_data[nAttrOffset + 6] +
1055 72 : psElement->attr_data[nAttrOffset + 7] * 256;
1056 72 : nMSLink = psElement->attr_data[nAttrOffset + 8] |
1057 72 : (psElement->attr_data[nAttrOffset + 9] << 8) |
1058 72 : (psElement->attr_data[nAttrOffset + 10] << 16) |
1059 72 : (psElement->attr_data[nAttrOffset + 11] << 24);
1060 : }
1061 :
1062 84 : if (pnLinkageType != nullptr)
1063 37 : *pnLinkageType = nLinkageType;
1064 84 : if (pnEntityNum != nullptr)
1065 26 : *pnEntityNum = nEntityNum;
1066 84 : if (pnMSLink != nullptr)
1067 26 : *pnMSLink = nMSLink;
1068 84 : if (pnLength != nullptr)
1069 37 : *pnLength = nLinkSize;
1070 :
1071 84 : return psElement->attr_data + nAttrOffset;
1072 : }
1073 : }
1074 :
1075 336 : return nullptr;
1076 : }
1077 :
1078 : /************************************************************************/
1079 : /* DGNRotationToQuat() */
1080 : /* */
1081 : /* Compute a quaternion for a given Z rotation. */
1082 : /************************************************************************/
1083 :
1084 0 : void DGNRotationToQuaternion(double dfRotation, int *panQuaternion)
1085 :
1086 : {
1087 0 : const double dfRadianRot = (dfRotation / 180.0) * M_PI;
1088 :
1089 0 : panQuaternion[0] = (int)(cos(-dfRadianRot / 2.0) * 2147483647);
1090 0 : panQuaternion[1] = 0;
1091 0 : panQuaternion[2] = 0;
1092 0 : panQuaternion[3] = (int)(sin(-dfRadianRot / 2.0) * 2147483647);
1093 0 : }
1094 :
1095 : /************************************************************************/
1096 : /* DGNQuaternionToMatrix() */
1097 : /* */
1098 : /* Compute a rotation matrix for a given quaternion */
1099 : /* FIXME: Write documentation on how to use this matrix */
1100 : /* (i.e. things like row/column major, OpenGL style or not) */
1101 : /* kintel 20030819 */
1102 : /************************************************************************/
1103 :
1104 0 : void DGNQuaternionToMatrix(int *quat, float *mat)
1105 : {
1106 0 : const double q[4] = {1.0 * quat[1] / (1U << 31), 1.0 * quat[2] / (1U << 31),
1107 0 : 1.0 * quat[3] / (1U << 31),
1108 0 : 1.0 * quat[0] / (1U << 31)};
1109 :
1110 0 : mat[0 * 3 + 0] =
1111 0 : (float)(q[0] * q[0] - q[1] * q[1] - q[2] * q[2] + q[3] * q[3]);
1112 0 : mat[0 * 3 + 1] = (float)(2 * (q[2] * q[3] + q[0] * q[1]));
1113 0 : mat[0 * 3 + 2] = (float)(2 * (q[0] * q[2] - q[1] * q[3]));
1114 0 : mat[1 * 3 + 0] = (float)(2 * (q[0] * q[1] - q[2] * q[3]));
1115 0 : mat[1 * 3 + 1] =
1116 0 : (float)(-q[0] * q[0] + q[1] * q[1] - q[2] * q[2] + q[3] * q[3]);
1117 0 : mat[1 * 3 + 2] = (float)(2 * (q[0] * q[3] + q[1] * q[2]));
1118 0 : mat[2 * 3 + 0] = (float)(2 * (q[0] * q[2] + q[1] * q[3]));
1119 0 : mat[2 * 3 + 1] = (float)(2 * (q[1] * q[2] - q[0] * q[3]));
1120 0 : mat[2 * 3 + 2] =
1121 0 : (float)(-q[0] * q[0] - q[1] * q[1] + q[2] * q[2] + q[3] * q[3]);
1122 0 : }
1123 :
1124 : /************************************************************************/
1125 : /* DGNTransformPointWithQuaternion() */
1126 : /************************************************************************/
1127 :
1128 : #ifdef unused
1129 : void DGNTransformPointWithQuaternionVertex(CPL_UNUSED int *quat,
1130 : CPL_UNUSED DGNPoint *v1,
1131 : CPL_UNUSED DGNPoint *v2)
1132 : {
1133 : /* ==================================================================== */
1134 : /* Original code provided by kintel 20030819, but assumed to be */
1135 : /* incomplete. */
1136 : /* ==================================================================== */
1137 :
1138 : #ifdef notdef
1139 : See below for sketched implementation. kintel 20030819.
1140 : float x,y,z,w;
1141 : // FIXME: Convert quat to x,y,z,w
1142 : v2.x = w * w * v1.x + 2 * y * w * v1.z - 2 * z * w * v1.y + x * x * v1.x +
1143 : 2 * y * x * v1.y + 2 * z * x * v1.z - z * z * v1.x - y * y * v1.x;
1144 : v2.y = 2 * x * y * v1.x + y * y * v1.y + 2 * z * y * v1.z +
1145 : 2 * w * z * v1.x - z * z * v1.y + w * w * v1.y - 2 * x * w * v1.z -
1146 : x * x * v1.y;
1147 : v2.z = 2 * x * z * v1.x + 2 * y * z * v1.y + z * z * v1.z -
1148 : 2 * w * y * v1.x - y * y * v1.z + 2 * w * x * v1.y - x * x * v1.z +
1149 : w * w * v1.z;
1150 : #endif
1151 :
1152 : /* ==================================================================== */
1153 : /* Implementation provided by Peggy Jung - 2004/03/05. */
1154 : /* peggy.jung at moskito-gis dot de. I haven't tested it. */
1155 : /* ==================================================================== */
1156 :
1157 : /* Version: 0.1 Datum: 26.01.2004
1158 :
1159 : IN:
1160 : x,y,z // DGNPoint &v1
1161 : quat[] //
1162 :
1163 : OUT:
1164 : newX, newY, newZ // DGNPoint &v2
1165 :
1166 : Author: Peggy Jung
1167 : */
1168 : /*
1169 : double ROT[12]; //rotation matrix for a given quaternion
1170 : double xx, xy, xz, xw, yy, yz, yw, zz, zw;
1171 : double a, b, c, d, n, x, y, z;
1172 :
1173 : x = v1->x;
1174 : y = v1->y;
1175 : z = v1->z;
1176 :
1177 : n =
1178 : sqrt((double)PDP2PC_long(quat[0])*(double)PDP2PC_long(quat[0])+(double)PDP2PC_long(quat[1])*(double)PDP2PC_long(quat[1])+
1179 : (double)PDP2PC_long(quat[2])*(double)PDP2PC_long(quat[2])+(double)PDP2PC_long(quat[3])*(double)PDP2PC_long(quat[3]));
1180 :
1181 : a = (double)PDP2PC_long(quat[0])/n; //w
1182 : b = (double)PDP2PC_long(quat[1])/n; //x
1183 : c = (double)PDP2PC_long(quat[2])/n; //y
1184 : d = (double)PDP2PC_long(quat[3])/n; //z
1185 :
1186 : xx = b*b;
1187 : xy = b*c;
1188 : xz = b*d;
1189 : xw = b*a;
1190 :
1191 : yy = c*c;
1192 : yz = c*d;
1193 : yw = c*a;
1194 :
1195 : zz = d*d;
1196 : zw = d+a;
1197 :
1198 : ROT[0] = 1 - 2 * yy - 2 * zz ;
1199 : ROT[1] = 2 * xy - 2 * zw ;
1200 : ROT[2] = 2 * xz + 2 * yw ;
1201 :
1202 : ROT[4] = 2 * xy + 2 * zw ;
1203 : ROT[5] = 1 - 2 * xx - 2 * zz ;
1204 : ROT[6] = 2 * yz - 2 * xw ;
1205 :
1206 : ROT[8] = 2 * xz - 2 * yw ;
1207 : ROT[9] = 2 * yz + 2 * xw ;
1208 : ROT[10] = 1 - 2 * xx - 2 * yy ;
1209 :
1210 : v2->x = ROT[0]*x + ROT[1]*y + ROT[2]*z;
1211 : v2->y = ROT[4]*x + ROT[5]*y + ROT[6]*z;
1212 : v2->z = ROT[8]*x + ROT[9]*y + ROT[10]*z;
1213 : */
1214 : }
1215 : #endif
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