| 491 | //--------------------------------------------------------------------------- |
| 492 | |
| 493 | static void read_points_seek(LASunzipper* unzipper, PointData& data) |
| 494 | { |
| 495 | if (unzipper==NULL) |
| 496 | return; |
| 497 | |
| 498 | unsigned char c; |
| 499 | unsigned int i,j; |
| 500 | unsigned int num_errors, num_seeks; |
| 501 | double start_time, end_time; |
| 502 | |
| 503 | start_time = taketime(); |
| 504 | num_errors = 0; |
| 505 | num_seeks = 0; |
| 506 | |
| 507 | if (settings->use_random) |
| 508 | { |
| 509 | for (i = 0; i < settings->num_points; i++) |
| 510 | { |
| 511 | if (i%1000 == 0) |
| 512 | { |
| 513 | if (num_seeks > 100) break; |
| 514 | int s = (rand()*rand())%settings->num_points; |
| 515 | fprintf(stderr, "at position %d seeking to %d\n", i, s); |
| 516 | unzipper->seek(s); |
| 517 | num_seeks++; |
| 518 | i = s; |
| 519 | } |
| 520 | unzipper->read(data.point); |
| 521 | srand(i); |
| 522 | c = rand() % 256; |
| 523 | for (j = 0; j < data.point_size; j++) |
| 524 | { |
| 525 | if (data.point_data[j] != c) |
| 526 | { |
| 527 | log("%d %d %d != %d\n", i, j, data.point_data[j], c); |
| 528 | num_errors++; |
| 529 | if (num_errors > 20) break; |
| 530 | } |
| 531 | c = rand() % 256; |
| 532 | } |
| 533 | if (num_errors > 20) break; |
| 534 | } |
| 535 | } |
| 536 | else |
| 537 | { |
| 538 | for (i = 0; i < settings->num_points; i++) |
| 539 | { |
| 540 | if (i%1000 == 0) |
| 541 | { |
| 542 | if (num_seeks > 100) break; |
| 543 | int s = (rand()*rand())%settings->num_points; |
| 544 | fprintf(stderr, "at position %d seeking to %d\n", i, s); |
| 545 | unzipper->seek(s); |
| 546 | num_seeks++; |
| 547 | i = s; |
| 548 | } |
| 549 | unzipper->read(data.point); |
| 550 | c = (unsigned char)i; |