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Changed the behavior of searches for labels in the basic extraction 

such that it looks for material connecting to the label at the
center point of the label and not the lower left corner.  This keeps
the behavior of looking for tiles on the corners of a degenerate
label line or point between layers, but avoids problems with sticky
labels that are not quite aligned with the rectangle (due to certain
commercial EDA tools that have a sloppier notion of labeling).
This commit is contained in:
Tim Edwards 2020-10-26 13:01:04 -04:00
parent 0a1cb9ca99
commit 3755661196
1 changed files with 7 additions and 6 deletions
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13
extract/ExtRegion.c
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@ -218,13 +218,14 @@ ExtLabelRegions(def, connTo, nodeList, clipArea)
for (quad = 0; quad < 4; quad++)
{
/*
* Visit each of the four quadrants surrounding
* the lower-left corner of the label, searching
* for a tile whose type matches that of the label
* or connects to it.
* Visit each of the four quadrants surrounding the center
* point of the label, searching for a tile whose type matches
* that of the label or connects to it.
*/
p.p_x = lab->lab_rect.r_xbot + offsets[quad].p_x;
p.p_y = lab->lab_rect.r_ybot + offsets[quad].p_y;
p.p_x = ((lab->lab_rect.r_xbot + lab->lab_rect.r_xtop) >> 1)
+ offsets[quad].p_x;
p.p_y = ((lab->lab_rect.r_ybot + lab->lab_rect.r_ytop) >> 1)
+ offsets[quad].p_y;
tp = def->cd_planes[pNum]->pl_hint;
GOTOPOINT(tp, &p);
def->cd_planes[pNum]->pl_hint = tp;