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Fixed bug: moving quad vertices around glued vertices in impractical ways to the edges.

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Tats
2016-11-25 17:43:12 -05:00
parent c3aeb11434
commit e03576d6fb
1 changed files with 8 additions and 3 deletions
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11
Polygon.cpp
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@@ -49,11 +49,16 @@ void Polygon::_constrainVertex(const QPolygonF& polygon, int i, QPointF& v)
// We now stretch segments a little bit to cope with approximation errors.
for (QVector<QLineF>::Iterator it = segments.begin(); it != segments.end(); ++it)
{
QLineF& seg = *it;
QLineF& seg = *it;
QPointF p1 = seg.p1();
QPointF p2 = seg.p2();
seg.setP1( p1 + (p1 - p2) * 0.35f);
seg.setP2( p2 + (p2 - p1) * 0.35f);
// Create small vector pointing in same direction as segment.
QVector2D vec(p2 - p1);
vec *= 10.0 / vec.length();
QPointF diff = vec.toPointF();
// Use it to elongate segment slightly.
seg.setP1( p1 - diff);
seg.setP2( p2 + diff);
}
// For each adjunct segment.