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小光 authored
function "QLineF::IntersectionType QLineF::intersects(const QLineF &line, QPointF *intersectionPoint) const" was introduced in Qt 5.14, and QLineF::intersect is obsolete. see also: https://doc.qt.io/qt-5.14/qlinef-obsolete.html https://doc.qt.io/qt-5.14/qlinef.html#intersects
