songsenand
/
cgal
mirror of https://github.com/CGAL/cgal
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merge 2dcf80c99a into 26a5fc70e4

This commit is contained in:
Christian Gagneraud 2025-12-03 14:01:24 +01:00 committed by GitHub
parent 26a5fc70e4 2dcf80c99a
commit 7f833d7d64
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 48 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
GraphicsView/include/CGAL/Qt/Converter.h
View File

@ -16,9 +16,11 @@
#include <CGAL/license/GraphicsView.h> #include <CGAL/license/GraphicsView.h>
#include <QtMath>
#include <QPointF> #include <QPointF>
#include <QLineF> #include <QLineF>
#include <QRectF> #include <QRectF>
#include <QPainterPath>
#include <QPolygonF> #include <QPolygonF>
#include <list> #include <list>
@ -184,6 +186,52 @@ public:
} }
} }
template < typename T >
QPainterPath operator()(const typename CGAL::General_polygon_2< T > &pgn) const
{
typedef typename CGAL::General_polygon_2< T > CGAL_Polygon_2;
typedef typename CGAL_Polygon_2::Curve_const_iterator CGAL_Curve_const_iterator;
typedef typename CGAL_Polygon_2::X_monotone_curve_2 CGAL_X_monotone_curve_2;
QPainterPath result;
CGAL_Curve_const_iterator current = pgn.curves_begin();
CGAL_Curve_const_iterator end = pgn.curves_end();
result.moveTo(QPointF(CGAL::to_double(current->source().x()),
CGAL::to_double(current->source().y())));
do {
const CGAL_X_monotone_curve_2 &curve = *current;
const QPointF target = QPointF(CGAL::to_double(curve.target().x()),
CGAL::to_double(curve.target().y()));
if (curve.is_linear()) {
result.lineTo(target);
}
else if (curve.is_circular()) {
const bool isClockwise = (curve.supporting_circle().orientation() == CGAL::CLOCKWISE);
const QRectF rect = operator()(curve.supporting_circle().bbox());
const QPointF center = QPointF(CGAL::to_double(curve.supporting_circle().center().x()),
CGAL::to_double(curve.supporting_circle().center().y()));
const QPointF source = QPointF(CGAL::to_double(curve.source().x()),
CGAL::to_double(curve.source().y()));
const QPointF p1 = source - center;
const QPointF p2 = target - center;
const double asource = qAtan2(p1.y(), p1.x());
const double atarget = qAtan2(p2.y(), p2.x());
double aspan = atarget - asource;
if (aspan < -CGAL_PI || (qFuzzyCompare(aspan, -CGAL_PI) && !isClockwise))
aspan += 2.0*CGAL_PI;
else if (aspan > CGAL_PI || (qFuzzyCompare(aspan, CGAL_PI) && isClockwise))
aspan -= 2.0*CGAL_PI;
result.arcTo(rect.normalized(), qRadiansToDegrees(-asource), qRadiansToDegrees(-aspan));
}
} while (++current != end);
return result;
}
}; };
} // namespace Qt } // namespace Qt