diff options
| -rw-r--r-- | examples/graphicsview/elasticnodes/edge.cpp | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/examples/graphicsview/elasticnodes/edge.cpp b/examples/graphicsview/elasticnodes/edge.cpp index e32a35a..eb02143 100644 --- a/examples/graphicsview/elasticnodes/edge.cpp +++ b/examples/graphicsview/elasticnodes/edge.cpp @@ -96,7 +96,7 @@ void Edge::adjust() prepareGeometryChange(); - if (!qFuzzyCompare(length, qreal(0.0))) { + if (length > qreal(20.)) { QPointF edgeOffset((line.dx() * 10) / length, (line.dy() * 10) / length); sourcePoint = line.p1() + edgeOffset; destPoint = line.p2() - edgeOffset; @@ -124,12 +124,15 @@ void Edge::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *) if (!source || !dest) return; - // Draw the line itself QLineF line(sourcePoint, destPoint); + if (qFuzzyCompare(line.length(), qreal(0.))) + return; + + // Draw the line itself painter->setPen(QPen(Qt::black, 1, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin)); painter->drawLine(line); - // Draw the arrows if there's enough room + // Draw the arrows double angle = ::acos(line.dx() / line.length()); if (line.dy() >= 0) angle = TwoPi - angle; |