qquadpath.cpp File Reference

(34d8cedb67f286d2c9a78e6a6587f062ebe6af48)

#include "qquadpath_p.h"
#include <QtGui/private/qbezier_p.h>
#include <QtMath>
#include <QtCore/QLoggingCategory>
#include <QtCore/QVarLengthArray>

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Classes
class	ElementCutter

Macros
#define	QQUICKSHAPECURVERENDERER_CONVEX_CHECK_ERROR_MARGIN   (1.0f / 32.0f)

Functions
QT_BEGIN_NAMESPACE	Q_DECLARE_LOGGING_CATEGORY (lcSGCurveProcessor)
static 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)
static void	qt_toQuadratics (const QBezier &b, QPolygonF *out, qreal errorLimit=0.01)
static float	crossProduct (const QVector2D &sp, const QVector2D &p, const QVector2D &ep)
static void	printElement (QDebug stream, const QQuadPath::Element &element)
QDebug	operator<< (QDebug stream, const QQuadPath::Element &element)
QDebug	operator<< (QDebug stream, const QQuadPath &path)

Macro Definition Documentation

QQUICKSHAPECURVERENDERER_CONVEX_CHECK_ERROR_MARGIN

#define QQUICKSHAPECURVERENDERER_CONVEX_CHECK_ERROR_MARGIN   (1.0f / 32.0f)

Definition at line 477 of file qquadpath.cpp.

Function Documentation

crossProduct()

static float crossProduct ( const QVector2D & sp, const QVector2D & p, const QVector2D & ep )

static

Definition at line 282 of file qquadpath.cpp.

References sp.

Referenced by QQuadPath::isPointOnLeft(), QQuadPath::isPointOnLine(), QVector3D::normal(), and QVector3D::normal().

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operator<<() [1/2]

QDebug operator<<	(	QDebug	stream,
		const QQuadPath &	path )

Definition at line 933 of file qquadpath.cpp.

References QQuadPath::contains(), and QQuadPath::elementCount().

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operator<<() [2/2]

QDebug operator<<	(	QDebug	stream,
		const QQuadPath::Element &	element )

Definition at line 923 of file qquadpath.cpp.

References QBezier::bezierOnInterval(), i, out, qt_addToQuadratics(), and t1.

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printElement()

static void printElement ( QDebug stream, const QQuadPath::Element & element )

static

Definition at line 912 of file qquadpath.cpp.

References QQuadPath::Element::controlPoint(), QQuadPath::Element::endPoint(), QQuadPath::Element::isConvex(), QQuadPath::Element::isLine(), QQuadPath::Element::isSubpathEnd(), QQuadPath::Element::isSubpathStart(), and QQuadPath::Element::startPoint().

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Q_DECLARE_LOGGING_CATEGORY()

QT_BEGIN_NAMESPACE Q_DECLARE_LOGGING_CATEGORY

(

lcSGCurveProcessor

)

qt_addToQuadratics()

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

static

Definition at line 146 of file qquadpath.cpp.

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

Referenced by operator<<(), and qt_addToQuadratics().

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qt_getInflectionPoints()

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

static

Definition at line 91 of file qquadpath.cpp.

References QLineF::angle(), QBezier::mapBy(), QBezier::pt1(), QBezier::pt2(), QBezier::pt4(), qFuzzyCompare(), qFuzzyIsNull(), qIsFinite(), qSqrt(), qSwap(), 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 70 of file qquadpath.cpp.

References QLineF::NoIntersection.

Referenced by qt_addToQuadratics().

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qt_scoreQuadratic()

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

static

Definition at line 14 of file qquadpath.cpp.

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

Referenced by qt_addToQuadratics().

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qt_toQuadratics()

static void qt_toQuadratics ( const QBezier & b, QPolygonF * out, qreal errorLimit = 0.01 )

static

Definition at line 161 of file qquadpath.cpp.

References c2, QPointF::dotProduct(), out, and qt_getInflectionPoints().

Referenced by QQuadPath::fromPainterPath().

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