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Corrected the run-length wide-spacing rule so that it correctly

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identifies areas which meet the proper definition of run-length
(both edges are parallel for the run-length distance or more).
Previously, errors were getting triggered for geometry where
only one edge exceeded the run-length distance.
This commit is contained in:
Tim Edwards
2024-12-12 14:10:03 -05:00
parent 37dfe07edf
commit 5ebbed4c12
4 changed files with 55 additions and 18 deletions
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drc/DRCbasic.c
+10 -3
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@@ -161,6 +161,15 @@ areaCheck(tile, arg)
if ((rect.r_xbot >= rect.r_xtop) || (rect.r_ybot >= rect.r_ytop))
return 0;
/* Run-length rules are ignored unless the width of the error
* exceeds the run-length distance (which is held in the
* drcc_cdist entry for the rule).
*/
if (arg->dCD_cptr->drcc_flags & DRC_RUNLENGTH)
if (((rect.r_xtop - rect.r_xbot) < arg->dCD_cptr->drcc_cdist) &&
((rect.r_ytop - rect.r_ybot) < arg->dCD_cptr->drcc_cdist))
return 0;
/*
* When Euclidean distance checks are enabled, check for error tiles
* outside of the perimeter of the circle in the corner extension area
@@ -716,7 +725,6 @@ drcTile (tile, arg)
for (i = 0; i < mrd->entries; i++)
{
lr = &mrd->rlist[i];
GeoClip(lr, arg->dCD_clip);
if ((lr->r_ytop - lr->r_ybot) > cptr->drcc_cdist)
{
triggered = mrd->entries;
@@ -1067,7 +1075,7 @@ drcTile (tile, arg)
/* Find the rule distances according to the scale factor */
dist = cptr->drcc_dist;
cdist = cptr->drcc_cdist;
cdist = (cptr->drcc_flags & DRC_RUNLENGTH) ? 0 : cptr->drcc_cdist;
trigpending = (cptr->drcc_flags & DRC_TRIGGER) ? TRUE : FALSE;
/* drcc_edgeplane is used to avoid checks on edges */
@@ -1119,7 +1127,6 @@ drcTile (tile, arg)
for (i = 0; i < mrd->entries; i++)
{
lr = &mrd->rlist[i];
GeoClip(lr, arg->dCD_clip);
if ((lr->r_xtop - lr->r_xbot) > cptr->drcc_cdist)
{
triggered = mrd->entries;