libanim: 5993f405a1cb src/anim.c

libanim

view src/anim.c @ 21:5993f405a1cb

implemented multiple animations per node, and blending between two animations

author	John Tsiombikas <nuclear@member.fsf.org>
date	Fri, 27 Dec 2013 06:28:43 +0200
parents	3c2428cb38f7
children	9758004136f8

line source

1 #include <stdlib.h>

2 #include <limits.h>

3 #include <assert.h>

4 #include "anim.h"

5 #include "dynarr.h"

7 #define ROT_USE_SLERP

9 static void invalidate_cache(struct anm_node *node);

11 int anm_init_animation(struct anm_animation *anim)

12 {

13 int i, j;

14 static const float defaults[] = {

15 0.0f, 0.0f, 0.0f, /* default position */

16 0.0f, 0.0f, 0.0f, 1.0f, /* default rotation quat */

17 1.0f, 1.0f, 1.0f /* default scale factor */

18 };

20 anim->name = 0;

22 for(i=0; i<ANM_NUM_TRACKS; i++) {

23 if(anm_init_track(anim->tracks + i) == -1) {

24 for(j=0; j<i; j++) {

25 anm_destroy_track(anim->tracks + i);

26 }

27 }

28 anm_set_track_default(anim->tracks + i, defaults[i]);

29 }

30 return 0;

31 }

33 void anm_destroy_animation(struct anm_animation *anim)

34 {

35 int i;

36 for(i=0; i<ANM_NUM_TRACKS; i++) {

37 anm_destroy_track(anim->tracks + i);

38 }

39 free(anim->name);

40 }

42 /* ---- node implementation ----- */

44 int anm_init_node(struct anm_node *node)

45 {

46 memset(node, 0, sizeof *node);

48 node->cur_anim[1] = -1;

49 node->cur_mix = 0;

51 if(!(node->animations = dynarr_alloc(1, sizeof *node->animations))) {

52 return -1;

53 }

54 if(anm_init_animation(node->animations) == -1) {

55 dynarr_free(node->animations);

56 return -1;

57 }

59 /* initialize thread-local matrix cache */

60 pthread_key_create(&node->cache_key, 0);

61 pthread_mutex_init(&node->cache_list_lock, 0);

63 return 0;

64 }

66 void anm_destroy_node(struct anm_node *node)

67 {

68 int i;

69 free(node->name);

71 for(i=0; i<ANM_NUM_TRACKS; i++) {

72 anm_destroy_animation(node->animations + i);

73 }

74 dynarr_free(node->animations);

76 /* destroy thread-specific cache */

77 pthread_key_delete(node->cache_key);

79 while(node->cache_list) {

80 struct mat_cache *tmp = node->cache_list;

81 node->cache_list = tmp->next;

82 free(tmp);

83 }

84 }

86 void anm_destroy_node_tree(struct anm_node *tree)

87 {

88 struct anm_node *c, *tmp;

90 if(!tree) return;

92 c = tree->child;

93 while(c) {

94 tmp = c;

95 c = c->next;

97 anm_destroy_node_tree(tmp);

98 }

99 anm_destroy_node(tree);

100 }

101

102 struct anm_node *anm_create_node(void)

103 {

104 struct anm_node *n;

105

106 if((n = malloc(sizeof *n))) {

107 if(anm_init_node(n) == -1) {

108 free(n);

109 return 0;

110 }

111 }

112 return n;

113 }

114

115 void anm_free_node(struct anm_node *node)

116 {

117 anm_destroy_node(node);

118 free(node);

119 }

120

121 void anm_free_node_tree(struct anm_node *tree)

122 {

123 struct anm_node *c, *tmp;

124

125 if(!tree) return;

126

127 c = tree->child;

128 while(c) {

129 tmp = c;

130 c = c->next;

131

132 anm_free_node_tree(tmp);

133 }

134

135 anm_free_node(tree);

136 }

137

138 int anm_set_node_name(struct anm_node *node, const char *name)

139 {

140 char *str;

141

142 if(!(str = malloc(strlen(name) + 1))) {

143 return -1;

144 }

145 strcpy(str, name);

146 free(node->name);

147 node->name = str;

148 return 0;

149 }

150

151 const char *anm_get_node_name(struct anm_node *node)

152 {

153 return node->name ? node->name : "";

154 }

155

156 void anm_link_node(struct anm_node *p, struct anm_node *c)

157 {

158 c->next = p->child;

159 p->child = c;

160

161 c->parent = p;

162 invalidate_cache(c);

163 }

164

165 int anm_unlink_node(struct anm_node *p, struct anm_node *c)

166 {

167 struct anm_node *iter;

168

169 if(p->child == c) {

170 p->child = c->next;

171 c->next = 0;

172 invalidate_cache(c);

173 return 0;

174 }

175

176 iter = p->child;

177 while(iter->next) {

178 if(iter->next == c) {

179 iter->next = c->next;

180 c->next = 0;

181 invalidate_cache(c);

182 return 0;

183 }

184 }

185 return -1;

186 }

187

188 void anm_set_pivot(struct anm_node *node, vec3_t piv)

189 {

190 node->pivot = piv;

191 }

192

193 vec3_t anm_get_pivot(struct anm_node *node)

194 {

195 return node->pivot;

196 }

197

198

199 /* animation management */

200

201 int anm_use_node_animation(struct anm_node *node, int aidx)

202 {

203 if(aidx == node->cur_anim[0] && node->cur_anim[1] == -1) {

204 return 0; /* no change, no invalidation */

205 }

206

207 if(aidx < 0 || aidx >= anm_get_animation_count(node)) {

208 return -1;

209 }

210

211 node->cur_anim[0] = aidx;

212 node->cur_anim[1] = -1;

213 node->cur_mix = 0;

214

215 invalidate_cache(node);

216 return 0;

217 }

218

219 int anm_use_node_animations(struct anm_node *node, int aidx, int bidx, float t)

220 {

221 int num_anim;

222

223 if(node->cur_anim[0] == aidx && node->cur_anim[1] == bidx &&

224 fabs(t - node->cur_mix) < 1e-6) {

225 return 0; /* no change, no invalidation */

226 }

227

228 num_anim = anm_get_animation_count(node);

229 if(aidx < 0 || aidx >= num_anim) {

230 return anm_use_animation(node, bidx);

231 }

232 if(bidx < 0 || bidx >= num_anim) {

233 return anm_use_animation(node, aidx);

234 }

235 node->cur_anim[0] = aidx;

236 node->cur_anim[1] = bidx;

237 node->cur_mix = t;

238

239 invalidate_cache(node);

240 return 0;

241 }

242

243 int anm_use_animation(struct anm_node *node, int aidx)

244 {

245 struct anm_node *child;

246

247 if(anm_use_node_animation(node, aidx) == -1) {

248 return -1;

249 }

250

251 child = node->child;

252 while(child) {

253 if(anm_use_animation(child, aidx) == -1) {

254 return -1;

255 }

256 child = child->next;

257 }

258 return 0;

259 }

260

261 int anm_use_animations(struct anm_node *node, int aidx, int bidx, float t)

262 {

263 struct anm_node *child;

264

265 if(anm_use_node_animations(node, aidx, bidx, t) == -1) {

266 return -1;

267 }

268

269 child = node->child;

270 while(child) {

271 if(anm_use_animations(child, aidx, bidx, t) == -1) {

272 return -1;

273 }

274 child = child->next;

275 }

276 return 0;

277

278 }

279

280 int anm_get_active_animation_index(struct anm_node *node, int which)

281 {

282 if(which < 0 || which >= 2) return -1;

283 return node->cur_anim[which];

284 }

285

286 struct anm_animation *anm_get_active_animation(struct anm_node *node, int which)

287 {

288 int idx = anm_get_active_animation_index(node, which);

289 if(idx < 0 || idx >= anm_get_animation_count(node)) {

290 return 0;

291 }

292 return node->animations + idx;

293 }

294

295 float anm_get_active_animation_mix(struct anm_node *node)

296 {

297 return node->cur_mix;

298 }

299

300 int anm_get_animation_count(struct anm_node *node)

301 {

302 return dynarr_size(node->animations);

303 }

304

305 int anm_add_node_animation(struct anm_node *node)

306 {

307 struct anm_animation newanim;

308 anm_init_animation(&newanim);

309

310 node->animations = dynarr_push(node->animations, &newanim);

311 return 0;

312 }

313

314 int anm_remove_node_animation(struct anm_node *node, int idx)

315 {

316 fprintf(stderr, "anm_remove_animation: unimplemented!");

317 abort();

318 return 0;

319 }

320

321 int anm_add_animation(struct anm_node *node)

322 {

323 struct anm_node *child;

324

325 if(anm_add_node_animation(node) == -1) {

326 return -1;

327 }

328

329 child = node->child;

330 while(child) {

331 if(anm_add_animation(child)) {

332 return -1;

333 }

334 child = child->next;

335 }

336 return 0;

337 }

338

339 int anm_remove_animation(struct anm_node *node, int idx)

340 {

341 struct anm_node *child;

342

343 if(anm_remove_node_animation(node, idx) == -1) {

344 return -1;

345 }

346

347 child = node->child;

348 while(child) {

349 if(anm_remove_animation(child, idx) == -1) {

350 return -1;

351 }

352 child = child->next;

353 }

354 return 0;

355 }

356

357 struct anm_animation *anm_get_animation(struct anm_node *node, int idx)

358 {

359 if(idx < 0 || idx > anm_get_animation_count(node)) {

360 return 0;

361 }

362 return node->animations + idx;

363 }

364

365 struct anm_animation *anm_get_animation_by_name(struct anm_node *node, const char *name)

366 {

367 return anm_get_animation(node, anm_find_animation(node, name));

368 }

369

370 int anm_find_animation(struct anm_node *node, const char *name)

371 {

372 int i, count = anm_get_animation_count(node);

373 for(i=0; i<count; i++) {

374 if(strcmp(node->animations[i].name, name) == 0) {

375 return i;

376 }

377 }

378 return -1;

379 }

380

381 /* all the rest act on the current animation(s) */

382

383 void anm_set_interpolator(struct anm_node *node, enum anm_interpolator in)

384 {

385 int i;

386 struct anm_animation *anim = anm_get_active_animation(node, 0);

387 if(!anim) return;

388

389 for(i=0; i<ANM_NUM_TRACKS; i++) {

390 anm_set_track_interpolator(anim->tracks + i, in);

391 }

392 invalidate_cache(node);

393 }

394

395 void anm_set_extrapolator(struct anm_node *node, enum anm_extrapolator ex)

396 {

397 int i;

398 struct anm_animation *anim = anm_get_active_animation(node, 0);

399 if(!anim) return;

400

401 for(i=0; i<ANM_NUM_TRACKS; i++) {

402 anm_set_track_extrapolator(anim->tracks + i, ex);

403 }

404 invalidate_cache(node);

405 }

406

407 void anm_set_position(struct anm_node *node, vec3_t pos, anm_time_t tm)

408 {

409 struct anm_animation *anim = anm_get_active_animation(node, 0);

410 if(!anim) return;

411

412 anm_set_value(anim->tracks + ANM_TRACK_POS_X, tm, pos.x);

413 anm_set_value(anim->tracks + ANM_TRACK_POS_Y, tm, pos.y);

414 anm_set_value(anim->tracks + ANM_TRACK_POS_Z, tm, pos.z);

415 invalidate_cache(node);

416 }

417

418 vec3_t anm_get_node_position(struct anm_node *node, anm_time_t tm)

419 {

420 vec3_t v;

421 struct anm_animation *anim0 = anm_get_active_animation(node, 0);

422 struct anm_animation *anim1 = anm_get_active_animation(node, 1);

423

424 if(!anim0) {

425 return v3_cons(0, 0, 0);

426 }

427

428 v.x = anm_get_value(anim0->tracks + ANM_TRACK_POS_X, tm);

429 v.y = anm_get_value(anim0->tracks + ANM_TRACK_POS_Y, tm);

430 v.z = anm_get_value(anim0->tracks + ANM_TRACK_POS_Z, tm);

431

432 if(anim1) {

433 vec3_t v1;

434 v1.x = anm_get_value(anim1->tracks + ANM_TRACK_POS_X, tm);

435 v1.y = anm_get_value(anim1->tracks + ANM_TRACK_POS_Y, tm);

436 v1.z = anm_get_value(anim1->tracks + ANM_TRACK_POS_Z, tm);

437

438 v.x = v.x + (v1.x - v.x) * node->cur_mix;

439 v.y = v.y + (v1.y - v.y) * node->cur_mix;

440 v.z = v.z + (v1.z - v.z) * node->cur_mix;

441 }

442

443 return v;

444 }

445

446 void anm_set_rotation(struct anm_node *node, quat_t rot, anm_time_t tm)

447 {

448 struct anm_animation *anim = anm_get_active_animation(node, 0);

449 if(!anim) return;

450

451 anm_set_value(anim->tracks + ANM_TRACK_ROT_X, tm, rot.x);

452 anm_set_value(anim->tracks + ANM_TRACK_ROT_Y, tm, rot.y);

453 anm_set_value(anim->tracks + ANM_TRACK_ROT_Z, tm, rot.z);

454 anm_set_value(anim->tracks + ANM_TRACK_ROT_W, tm, rot.w);

455 invalidate_cache(node);

456 }

457

458 static quat_t get_node_rotation(struct anm_node *node, anm_time_t tm, struct anm_animation *anim)

459 {

460 #ifndef ROT_USE_SLERP

461 quat_t q;

462 q.x = anm_get_value(anim->tracks + ANM_TRACK_ROT_X, tm);

463 q.y = anm_get_value(anim->tracks + ANM_TRACK_ROT_Y, tm);

464 q.z = anm_get_value(anim->tracks + ANM_TRACK_ROT_Z, tm);

465 q.w = anm_get_value(anim->tracks + ANM_TRACK_ROT_W, tm);

466 return q;

467 #else

468 int idx0, idx1, last_idx;

469 anm_time_t tstart, tend;

470 float t, dt;

471 struct anm_track *track_x, *track_y, *track_z, *track_w;

472 quat_t q, q1, q2;

473

474 track_x = anim->tracks + ANM_TRACK_ROT_X;

475 track_y = anim->tracks + ANM_TRACK_ROT_Y;

476 track_z = anim->tracks + ANM_TRACK_ROT_Z;

477 track_w = anim->tracks + ANM_TRACK_ROT_W;

478

479 if(!track_x->count) {

480 q.x = track_x->def_val;

481 q.y = track_y->def_val;

482 q.z = track_z->def_val;

483 q.w = track_w->def_val;

484 return q;

485 }

486

487 last_idx = track_x->count - 1;

488

489 tstart = track_x->keys[0].time;

490 tend = track_x->keys[last_idx].time;

491

492 if(tstart == tend) {

493 q.x = track_x->keys[0].val;

494 q.y = track_y->keys[0].val;

495 q.z = track_z->keys[0].val;

496 q.w = track_w->keys[0].val;

497 return q;

498 }

499

500 tm = anm_remap_time(track_x, tm, tstart, tend);

501

502 idx0 = anm_get_key_interval(track_x, tm);

503 assert(idx0 >= 0 && idx0 < track_x->count);

504 idx1 = idx0 + 1;

505

506 if(idx0 == last_idx) {

507 q.x = track_x->keys[idx0].val;

508 q.y = track_y->keys[idx0].val;

509 q.z = track_z->keys[idx0].val;

510 q.w = track_w->keys[idx0].val;

511 return q;

512 }

513

514 dt = (float)(track_x->keys[idx1].time - track_x->keys[idx0].time);

515 t = (float)(tm - track_x->keys[idx0].time) / dt;

516

517 q1.x = track_x->keys[idx0].val;

518 q1.y = track_y->keys[idx0].val;

519 q1.z = track_z->keys[idx0].val;

520 q1.w = track_w->keys[idx0].val;

521

522 q2.x = track_x->keys[idx1].val;

523 q2.y = track_y->keys[idx1].val;

524 q2.z = track_z->keys[idx1].val;

525 q2.w = track_w->keys[idx1].val;

526

527 /*q1 = quat_normalize(q1);

528 q2 = quat_normalize(q2);*/

529

530 return quat_slerp(q1, q2, t);

531 #endif

532 }

533

534 quat_t anm_get_node_rotation(struct anm_node *node, anm_time_t tm)

535 {

536 quat_t q;

537 struct anm_animation *anim0 = anm_get_active_animation(node, 0);

538 struct anm_animation *anim1 = anm_get_active_animation(node, 1);

539

540 if(!anim0) {

541 return quat_identity();

542 }

543

544 q = get_node_rotation(node, tm, anim0);

545

546 if(anim1) {

547 quat_t q1 = get_node_rotation(node, tm, anim1);

548

549 q = quat_slerp(q, q1, node->cur_mix);

550 }

551 return q;

552 }

553

554 void anm_set_scaling(struct anm_node *node, vec3_t scl, anm_time_t tm)

555 {

556 struct anm_animation *anim = anm_get_active_animation(node, 0);

557 if(!anim) return;

558

559 anm_set_value(anim->tracks + ANM_TRACK_SCL_X, tm, scl.x);

560 anm_set_value(anim->tracks + ANM_TRACK_SCL_Y, tm, scl.y);

561 anm_set_value(anim->tracks + ANM_TRACK_SCL_Z, tm, scl.z);

562 invalidate_cache(node);

563 }

564

565 vec3_t anm_get_node_scaling(struct anm_node *node, anm_time_t tm)

566 {

567 vec3_t v;

568 struct anm_animation *anim0 = anm_get_active_animation(node, 0);

569 struct anm_animation *anim1 = anm_get_active_animation(node, 1);

570

571 if(!anim0) {

572 return v3_cons(1, 1, 1);

573 }

574

575 v.x = anm_get_value(anim0->tracks + ANM_TRACK_SCL_X, tm);

576 v.y = anm_get_value(anim0->tracks + ANM_TRACK_SCL_Y, tm);

577 v.z = anm_get_value(anim0->tracks + ANM_TRACK_SCL_Z, tm);

578

579 if(anim1) {

580 vec3_t v1;

581 v1.x = anm_get_value(anim1->tracks + ANM_TRACK_SCL_X, tm);

582 v1.y = anm_get_value(anim1->tracks + ANM_TRACK_SCL_Y, tm);

583 v1.z = anm_get_value(anim1->tracks + ANM_TRACK_SCL_Z, tm);

584

585 v.x = v.x + (v1.x - v.x) * node->cur_mix;

586 v.y = v.y + (v1.y - v.y) * node->cur_mix;

587 v.z = v.z + (v1.z - v.z) * node->cur_mix;

588 }

589

590 return v;

591 }

592

593

594 vec3_t anm_get_position(struct anm_node *node, anm_time_t tm)

595 {

596 mat4_t xform;

597 vec3_t pos = {0.0, 0.0, 0.0};

598

599 if(!node->parent) {

600 return anm_get_node_position(node, tm);

601 }

602

603 anm_get_matrix(node, xform, tm);

604 return v3_transform(pos, xform);

605 }

606

607 quat_t anm_get_rotation(struct anm_node *node, anm_time_t tm)

608 {

609 quat_t rot, prot;

610 rot = anm_get_node_rotation(node, tm);

611

612 if(!node->parent) {

613 return rot;

614 }

615

616 prot = anm_get_rotation(node->parent, tm);

617 return quat_mul(prot, rot);

618 }

619

620 vec3_t anm_get_scaling(struct anm_node *node, anm_time_t tm)

621 {

622 vec3_t s, ps;

623 s = anm_get_node_scaling(node, tm);

624

625 if(!node->parent) {

626 return s;

627 }

628

629 ps = anm_get_scaling(node->parent, tm);

630 return v3_mul(s, ps);

631 }

632

633 void anm_get_node_matrix(struct anm_node *node, mat4_t mat, anm_time_t tm)

634 {

635 int i;

636 mat4_t rmat;

637 vec3_t pos, scale;

638 quat_t rot;

639

640 pos = anm_get_node_position(node, tm);

641 rot = anm_get_node_rotation(node, tm);

642 scale = anm_get_node_scaling(node, tm);

643

644 m4_set_translation(mat, node->pivot.x, node->pivot.y, node->pivot.z);

645

646 quat_to_mat4(rmat, rot);

647 for(i=0; i<3; i++) {

648 mat[i][0] = rmat[i][0];

649 mat[i][1] = rmat[i][1];

650 mat[i][2] = rmat[i][2];

651 }

652 /* this loop is equivalent to: m4_mult(mat, mat, rmat); */

653

654 mat[0][0] *= scale.x; mat[0][1] *= scale.y; mat[0][2] *= scale.z; mat[0][3] += pos.x;

655 mat[1][0] *= scale.x; mat[1][1] *= scale.y; mat[1][2] *= scale.z; mat[1][3] += pos.y;

656 mat[2][0] *= scale.x; mat[2][1] *= scale.y; mat[2][2] *= scale.z; mat[2][3] += pos.z;

657

658 m4_translate(mat, -node->pivot.x, -node->pivot.y, -node->pivot.z);

659

660 /* that's basically: pivot * rotation * translation * scaling * -pivot */

661 }

662

663 void anm_get_node_inv_matrix(struct anm_node *node, mat4_t mat, anm_time_t tm)

664 {

665 mat4_t tmp;

666 anm_get_node_matrix(node, tmp, tm);

667 m4_inverse(mat, tmp);

668 }

669

670 void anm_eval_node(struct anm_node *node, anm_time_t tm)

671 {

672 anm_get_node_matrix(node, node->matrix, tm);

673 }

674

675 void anm_eval(struct anm_node *node, anm_time_t tm)

676 {

677 struct anm_node *c;

678

679 anm_eval_node(node, tm);

680

681 if(node->parent) {

682 /* due to post-order traversal, the parent matrix is already evaluated */

683 m4_mult(node->matrix, node->parent->matrix, node->matrix);

684 }

685

686 /* recersively evaluate all children */

687 c = node->child;

688 while(c) {

689 anm_eval(c, tm);

690 c = c->next;

691 }

692 }

693

694 void anm_get_matrix(struct anm_node *node, mat4_t mat, anm_time_t tm)

695 {

696 struct mat_cache *cache = pthread_getspecific(node->cache_key);

697 if(!cache) {

698 cache = malloc(sizeof *cache);

699 assert(cache);

700

701 pthread_mutex_lock(&node->cache_list_lock);

702 cache->next = node->cache_list;

703 node->cache_list = cache;

704 pthread_mutex_unlock(&node->cache_list_lock);

705

706 cache->time = ANM_TIME_INVAL;

707 cache->inv_time = ANM_TIME_INVAL;

708 pthread_setspecific(node->cache_key, cache);

709 }

710

711 if(cache->time != tm) {

712 anm_get_node_matrix(node, cache->matrix, tm);

713

714 if(node->parent) {

715 mat4_t parent_mat;

716

717 anm_get_matrix(node->parent, parent_mat, tm);

718 m4_mult(cache->matrix, parent_mat, cache->matrix);

719 }

720 cache->time = tm;

721 }

722 m4_copy(mat, cache->matrix);

723 }

724

725 void anm_get_inv_matrix(struct anm_node *node, mat4_t mat, anm_time_t tm)

726 {

727 struct mat_cache *cache = pthread_getspecific(node->cache_key);

728 if(!cache) {

729 cache = malloc(sizeof *cache);

730 assert(cache);

731

732 pthread_mutex_lock(&node->cache_list_lock);

733 cache->next = node->cache_list;

734 node->cache_list = cache;

735 pthread_mutex_unlock(&node->cache_list_lock);

736

737 cache->inv_time = ANM_TIME_INVAL;

738 cache->inv_time = ANM_TIME_INVAL;

739 pthread_setspecific(node->cache_key, cache);

740 }

741

742 if(cache->inv_time != tm) {

743 anm_get_matrix(node, mat, tm);

744 m4_inverse(cache->inv_matrix, mat);

745 cache->inv_time = tm;

746 }

747 m4_copy(mat, cache->inv_matrix);

748 }

749

750 anm_time_t anm_get_start_time(struct anm_node *node)

751 {

752 int i, j;

753 struct anm_node *c;

754 anm_time_t res = LONG_MAX;

755

756 for(j=0; j<2; j++) {

757 struct anm_animation *anim = anm_get_active_animation(node, j);

758 if(!anim) break;

759

760 for(i=0; i<ANM_NUM_TRACKS; i++) {

761 if(anim->tracks[i].count) {

762 anm_time_t tm = anim->tracks[i].keys[0].time;

763 if(tm < res) {

764 res = tm;

765 }

766 }

767 }

768 }

769

770 c = node->child;

771 while(c) {

772 anm_time_t tm = anm_get_start_time(c);

773 if(tm < res) {

774 res = tm;

775 }

776 c = c->next;

777 }

778 return res;

779 }

780

781 anm_time_t anm_get_end_time(struct anm_node *node)

782 {

783 int i, j;

784 struct anm_node *c;

785 anm_time_t res = LONG_MIN;

786

787 for(j=0; j<2; j++) {

788 struct anm_animation *anim = anm_get_active_animation(node, j);

789 if(!anim) break;

790

791 for(i=0; i<ANM_NUM_TRACKS; i++) {

792 if(anim->tracks[i].count) {

793 anm_time_t tm = anim->tracks[i].keys[anim->tracks[i].count - 1].time;

794 if(tm > res) {

795 res = tm;

796 }

797 }

798 }

799 }

800

801 c = node->child;

802 while(c) {

803 anm_time_t tm = anm_get_end_time(c);

804 if(tm > res) {

805 res = tm;

806 }

807 c = c->next;

808 }

809 return res;

810 }

811

812 static void invalidate_cache(struct anm_node *node)

813 {

814 struct mat_cache *cache = pthread_getspecific(node->cache_key);

815 if(cache) {

816 cache->time = cache->inv_time = ANM_TIME_INVAL;

817 }

818 }