| 454 |
|
y1 = p0->y + c1*s1y/l1; |
| 455 |
|
for (c2 = l2; c2-- > 0; ) { |
| 456 |
|
x = x1 + c2*s2x/l2; |
| 457 |
+ |
if (x < 0 || x >= hresolu) |
| 458 |
+ |
continue; |
| 459 |
|
y = y1 + c2*s2y/l2; |
| 460 |
+ |
if (y < 0 || y >= vresolu) |
| 461 |
+ |
continue; |
| 462 |
|
if (zscan(y)[x] <= 0 || zscan(y)[x]-z |
| 463 |
|
> zeps*zscan(y)[x]) { |
| 464 |
|
zscan(y)[x] = z; |
| 523 |
|
} |
| 524 |
|
/* |
| 525 |
|
* If we have no background for this pixel, |
| 522 |
– |
* or if the background is too distant, |
| 526 |
|
* use the given fill function. |
| 527 |
|
*/ |
| 528 |
< |
if ((xback < 0 && yback[x] < 0) |
| 529 |
< |
|| (samp > 0 |
| 527 |
< |
&& ABS(x-xback) >= samp |
| 528 |
< |
&& ABS(y-yback[y]) >= samp)) { |
| 529 |
< |
(*fill)(x,y); |
| 530 |
< |
if (fill != backfill) { /* reuse */ |
| 531 |
< |
yback[x] = -2; |
| 532 |
< |
xback = -2; |
| 533 |
< |
} |
| 534 |
< |
continue; |
| 535 |
< |
} |
| 528 |
> |
if (xback < 0 && yback[x] < 0) |
| 529 |
> |
goto fillit; |
| 530 |
|
/* |
| 531 |
|
* Compare, and use the background that is |
| 532 |
|
* farther, unless one of them is next to us. |
| 533 |
+ |
* If the background is too distant, call |
| 534 |
+ |
* the fill function. |
| 535 |
|
*/ |
| 536 |
|
if ( yback[x] < 0 |
| 537 |
|
|| (xback >= 0 && ABS(x-xback) <= 1) |
| 538 |
|
|| ( ABS(y-yback[x]) > 1 |
| 539 |
|
&& zscan(yback[x])[x] |
| 540 |
|
< zscan(y)[xback] ) ) { |
| 541 |
+ |
if (samp > 0 && ABS(x-xback) >= samp) |
| 542 |
+ |
goto fillit; |
| 543 |
|
copycolr(pscan(y)[x],pscan(y)[xback]); |
| 544 |
|
zscan(y)[x] = zscan(y)[xback]; |
| 545 |
|
} else { |
| 546 |
+ |
if (samp > 0 && ABS(y-yback[x]) > samp) |
| 547 |
+ |
goto fillit; |
| 548 |
|
copycolr(pscan(y)[x],pscan(yback[x])[x]); |
| 549 |
|
zscan(y)[x] = zscan(yback[x])[x]; |
| 550 |
+ |
} |
| 551 |
+ |
continue; |
| 552 |
+ |
fillit: |
| 553 |
+ |
(*fill)(x,y); |
| 554 |
+ |
if (fill == rcalfill) { /* use it */ |
| 555 |
+ |
clearqueue(); |
| 556 |
+ |
xback = x; |
| 557 |
+ |
yback[x] = y; |
| 558 |
|
} |
| 559 |
|
} else { /* full pixel */ |
| 560 |
|
yback[x] = -2; |
