qt_quadratic_bezier.cpp File Reference

#include <private/qbezier_p.h>
#include <QtMath>

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Functions
static QT_BEGIN_NAMESPACE qreal	qt_scoreQuadratic (const QBezier &b, QPointF qcp)
static QPointF	qt_quadraticForCubic (const QBezier &b)
static int	qt_getInflectionPoints (const QBezier &orig, qreal *tpoints)
static void	qt_addToQuadratics (const QBezier &b, QPolygonF *p, int maxSplits, qreal maxDiff)
void	qt_toQuadratics (const QBezier &b, QPolygonF *out, qreal errorLimit)

Function Documentation

qt_addToQuadratics()

static void qt_addToQuadratics ( const QBezier &  b, QPolygonF *  p, int  maxSplits, qreal  maxDiff  )

static

Definition at line 144 of file qt_quadratic_bezier.cpp.

References QBezier::parameterSplitLeft(), qt_addToQuadratics(), qt_quadraticForCubic(), and qt_scoreQuadratic().

Referenced by qt_addToQuadratics(), and qt_toQuadratics().

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qt_getInflectionPoints()

static int qt_getInflectionPoints ( const QBezier &  orig, qreal *  tpoints  )

static

Definition at line 88 of file qt_quadratic_bezier.cpp.

References QLineF::angle(), QBezier::mapBy(), QBezier::pt1(), QBezier::pt4(), Q_ASSERT, qFuzzyCompare(), qFuzzyIsNull(), qIsFinite(), qSqrt(), qSwap(), QTransform::rotate(), QTransform::translate(), QPointF::x(), and QPointF::y().

Referenced by qt_toQuadratics().

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qt_quadraticForCubic()

static QPointF qt_quadraticForCubic ( const QBezier &  b )

static

Definition at line 67 of file qt_quadratic_bezier.cpp.

References QLineF::intersects(), QLineF::NoIntersection, QPointF::x(), and QPointF::y().

Referenced by qt_addToQuadratics().

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qt_scoreQuadratic()

static QT_BEGIN_NAMESPACE qreal qt_scoreQuadratic ( const QBezier &  b, QPointF  qcp  )

static

Definition at line 11 of file qt_quadratic_bezier.cpp.

References d, QPointF::dotProduct(), i, init(), and Q_STATIC_ASSERT.

Referenced by qt_addToQuadratics().

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qt_toQuadratics()

void qt_toQuadratics	(	const QBezier &	b,
		QPolygonF *	out,
		qreal	errorLimit
	)

Definition at line 159 of file qt_quadratic_bezier.cpp.

References QBezier::bezierOnInterval(), QRectF::bottomRight(), c2, QPointF::dotProduct(), i, out, qt_addToQuadratics(), qt_getInflectionPoints(), t1, and QRectF::topLeft().

Referenced by QuadPath::fromPainterPath().

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