C++ (Cpp) QPainterPath::toFillPolygons示例

void tst_QPainterPath::testToFillPolygons()
{
    QPainterPath path;
    path.lineTo(QPointF(0, 50));
    path.lineTo(QPointF(50, 50));

    path.moveTo(QPointF(70, 50));
    path.lineTo(QPointF(70, 100));
    path.lineTo(QPointF(40, 100));

    const QList<QPolygonF> polygons = path.toFillPolygons();
    QCOMPARE(polygons.size(), 2);
    QCOMPARE(polygons.first().count(QPointF(70, 50)), 0);
}

示例#2

显示文件

文件： geometry.cpp 项目： ASabina/qreal

QList<QPointF> Geometry::pathToPoints(QPainterPath const &path)
{
	qreal const polygonIsPointCondition = 0.001;

	QList<QPolygonF> polygons = path.toFillPolygons();
	QList<QPointF> result;

	foreach (QPolygonF const &polygon, polygons) {
		if (square(polygon) < polygonIsPointCondition) {
			result << polygon[0];
		} else {
			return QList<QPointF>();
		}
	}

	return result;
}