| 636 | |
| 637 | |
| 638 | static void |
| 639 | Line2( Mat& img, Point2l pt1, Point2l pt2, const void* color) |
| 640 | { |
| 641 | int64 dx, dy; |
| 642 | int ecount; |
| 643 | int64 ax, ay; |
| 644 | int64 i, j; |
| 645 | int x, y; |
| 646 | int64 x_step, y_step; |
| 647 | int cb = ((uchar*)color)[0]; |
| 648 | int cg = ((uchar*)color)[1]; |
| 649 | int cr = ((uchar*)color)[2]; |
| 650 | int pix_size = (int)img.elemSize(); |
| 651 | uchar *ptr = img.data, *tptr; |
| 652 | size_t step = img.step; |
| 653 | Size size = img.size(); |
| 654 | |
| 655 | //assert( img && (nch == 1 || nch == 3) && img.depth() == CV_8U ); |
| 656 | |
| 657 | Size2l sizeScaled(((int64)size.width) << XY_SHIFT, ((int64)size.height) << XY_SHIFT); |
| 658 | if( !clipLine( sizeScaled, pt1, pt2 )) |
| 659 | return; |
| 660 | |
| 661 | dx = pt2.x - pt1.x; |
| 662 | dy = pt2.y - pt1.y; |
| 663 | |
| 664 | j = dx < 0 ? -1 : 0; |
| 665 | ax = (dx ^ j) - j; |
| 666 | i = dy < 0 ? -1 : 0; |
| 667 | ay = (dy ^ i) - i; |
| 668 | |
| 669 | if( ax > ay ) |
| 670 | { |
| 671 | dx = ax; |
| 672 | dy = (dy ^ j) - j; |
| 673 | pt1.x ^= pt2.x & j; |
| 674 | pt2.x ^= pt1.x & j; |
| 675 | pt1.x ^= pt2.x & j; |
| 676 | pt1.y ^= pt2.y & j; |
| 677 | pt2.y ^= pt1.y & j; |
| 678 | pt1.y ^= pt2.y & j; |
| 679 | |
| 680 | x_step = XY_ONE; |
| 681 | y_step = (dy << XY_SHIFT) / (ax | 1); |
| 682 | ecount = (int)((pt2.x - pt1.x) >> XY_SHIFT); |
| 683 | } |
| 684 | else |
| 685 | { |
| 686 | dy = ay; |
| 687 | dx = (dx ^ i) - i; |
| 688 | pt1.x ^= pt2.x & i; |
| 689 | pt2.x ^= pt1.x & i; |
| 690 | pt1.x ^= pt2.x & i; |
| 691 | pt1.y ^= pt2.y & i; |
| 692 | pt2.y ^= pt1.y & i; |
| 693 | pt1.y ^= pt2.y & i; |
| 694 | |
| 695 | x_step = (dx << XY_SHIFT) / (ay | 1); |
no test coverage detected