Mercurial > MadButterfly

comparison src/shape_path.c @ 96:ca94493b75bb

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author Thinker K.F. Li <thinker@branda.to>
date Sat, 30 Aug 2008 00:32:05 +0800
parents 7d0580f89468
children 9453e68092b5
comparison
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95:7dfa4e60b26d 96:ca94493b75bb
51 * \todo Notify programmers that syntax or value error of path data. 51 * \todo Notify programmers that syntax or value error of path data.
52 */ 52 */
53 static int sh_path_cmd_arg_cnt(char *data, int *cmd_cntp, int *arg_cntp) { 53 static int sh_path_cmd_arg_cnt(char *data, int *cmd_cntp, int *arg_cntp) {
54 char *p, *old; 54 char *p, *old;
55 int cmd_cnt, arg_cnt; 55 int cmd_cnt, arg_cnt;
56 int i;
56 57
57 cmd_cnt = arg_cnt = 0; 58 cmd_cnt = arg_cnt = 0;
58 p = data; 59 p = data;
59 SKIP_SPACE(p); 60 SKIP_SPACE(p);
60 while(*p) { 61 while(*p) {
174 if(p == old) 175 if(p == old)
175 break; 176 break;
176 arg_cnt += 2; 177 arg_cnt += 2;
177 } 178 }
178 break; 179 break;
180 case 'A':
181 case 'a':
182 while(*p) {
183 SKIP_SPACE(p);
184 old = p;
185 SKIP_NUM(p);
186 if(p == old)
187 break;
188
189 for(i = 0; i < 6; i++) {
190 SKIP_SPACE(p);
191 old = p;
192 SKIP_NUM(p);
193 if(p == old)
194 return ERR;
195 }
196
197 arg_cnt += 6;
198 }
199 break;
179 case 'z': 200 case 'z':
180 case 'Z': 201 case 'Z':
181 break; 202 break;
182 default: 203 default:
183 return ERR; 204 return ERR;
184 } 205 }
206 /*! \todo cmd_cnt should be increased for each implicit repeating. */
185 cmd_cnt++; 207 cmd_cnt++;
186 SKIP_SPACE(p); 208 SKIP_SPACE(p);
187 } 209 }
188 210
189 *cmd_cntp = cmd_cnt; 211 *cmd_cntp = cmd_cnt;
190 *arg_cntp = arg_cnt; 212 *arg_cntp = arg_cnt;
213 return OK;
214 }
215
216 static int calc_center_and_x_aix(co_aix x0, co_aix y0,
217 co_aix x, co_aix y,
218 co_aix x_rotate,
219 int large, int sweep,
220 co_aix *cx, co_aix *cy,
221 co_aix *xx, co_aix *xy) {
222
223 }
224
225
226 static int sh_path_arc_cmd_arg_fill(char cmd, const char *data,
227 co_aix **args_p, const char **old_p) {
228 co_aix rx, ry;
229 co_aix x_rotate;
230 int large, sweep;
231 co_aix x, y, x0, y0, cx, cy, xx, xy;
232 co_aix *args = *args_p;
233 const char *old = *old_p;
234 const char *p;
235
236 p = data;
237 while(*p) {
238 SKIP_SPACE(p);
239 old = p;
240 SKIP_NUM(p);
241 if(p == old)
242 break;
243 rx = atof(old);
244
245 SKIP_SPACE(p);
246 old = p;
247 SKIP_NUM(p);
248 if(p == old)
249 return ERR;
250 ry = atof(old);
251
252 SKIP_SPACE(p);
253 old = p;
254 SKIP_NUM(p);
255 if(p == old)
256 return ERR;
257 x_rotate = atof(old);
258
259 SKIP_SPACE(p);
260 old = p;
261 SKIP_NUM(p);
262 if(p == old)
263 return ERR;
264 large = atoi(old);
265
266 SKIP_SPACE(p);
267 old = p;
268 SKIP_NUM(p);
269 if(p == old)
270 return ERR;
271 sweep = atoi(old);
272
273 SKIP_SPACE(p);
274 old = p;
275 SKIP_NUM(p);
276 if(p == old)
277 return ERR;
278 x = atof(old);
279
280 SKIP_SPACE(p);
281 old = p;
282 SKIP_NUM(p);
283 if(p == old)
284 return ERR;
285 y = atof(old);
286
287 x0 = *(args - 2);
288 y0 = *(args - 1);
289
290 if(islower(cmd)) {
291 x += x0;
292 y += y0;
293 }
294
295 calc_center_and_x_aix(x0, y0, x, y,
296 x_rotate, large, sweep,
297 &cx, &cy, &xx, &xy);
298
299 *(args++) = cx;
300 *(args++) = cy;
301 *(args++) = xx;
302 *(args++) = xy;
303 *(args++) = x;
304 *(args++) = y;
305 }
306
307 *old_p = old;
308
191 return OK; 309 return OK;
192 } 310 }
193 311
194 #define TO_ABS islower(cmd)? *(args - 2) + atof(old): atof(old) 312 #define TO_ABS islower(cmd)? *(args - 2) + atof(old): atof(old)
195 313
327 case 'H': 445 case 'H':
328 case 'v': 446 case 'v':
329 case 'V': 447 case 'V':
330 /*! \todo implement h, H, v, V comamnds for path. */ 448 /*! \todo implement h, H, v, V comamnds for path. */
331 return ERR; 449 return ERR;
450
451 case 'A':
452 case 'a':
453
454 break;
455
332 case 'z': 456 case 'z':
333 case 'Z': 457 case 'Z':
334 break; 458 break;
335 default: 459 default:
336 return ERR; 460 return ERR;