QPathEdge Class Reference

#include <qpathclipper_p.h>

Public Types
enum	Direction { Forward, Backward }
enum	Traversal { RightTraversal, LeftTraversal }
enum	Type { Line, Curve }

Public Functions
Direction	directionTo (int vertex) const
int	next (Traversal traversal, Direction direction) const
	QPathEdge (int a=-1, int b=-1)
void	setNext (Traversal traversal, Direction direction, int next)
void	setNext (Direction direction, int next)
int	vertex (Direction direction) const

Public Variables
double	angle
int	first
int	flag
double	invAngle
int	second
int	windingA
int	windingB

Properties
int	m_next [2][2]

Detailed Description

Definition at line 123 of file qpathclipper_p.h.

Enumerations

Direction

enum QPathEdge::Direction

Enumerator
Forward
Backward

Definition at line 131 of file qpathclipper_p.h.

                   {
        Forward,
        Backward
    };

Traversal

enum QPathEdge::Traversal

Enumerator
RightTraversal
LeftTraversal

Definition at line 126 of file qpathclipper_p.h.

                   {
        RightTraversal,
        LeftTraversal
    };

Type

enum QPathEdge::Type

Enumerator
Line
Curve

Definition at line 136 of file qpathclipper_p.h.

              {
        Line,
        Curve
    };

Constructors and Destructors

QPathEdge()

QPathEdge::QPathEdge ( int  a = -1, int  b = -1  )

inline

Definition at line 295 of file qpathclipper_p.h.

    : flag(0)
    , windingA(0)
    , windingB(0)
    , first(a)
    , second(b)
    , angle(0)
    , invAngle(0)
{
    m_next[0][0] = -1;
    m_next[1][0] = -1;
    m_next[0][0] = -1;
    m_next[1][0] = -1;
}

Functions

directionTo()

QPathEdge::Direction QPathEdge::directionTo ( int  vertex ) const

inline

Definition at line 326 of file qpathclipper_p.h.

Referenced by commonEdge(), and QWingedEdge::findInsertStatus().

{
    return first == vertex ? Backward : Forward;
}

next()

int QPathEdge::next ( Traversal  traversal, Direction  direction  ) const

inline

Definition at line 310 of file qpathclipper_p.h.

Referenced by QWingedEdge::addEdge(), QWingedEdge::next(), and setNext().

{
    return m_next[int(traversal)][int(direction)];
}

setNext() [1/2]

void QPathEdge::setNext ( Traversal  traversal, Direction  direction, int  next  )

inline

Definition at line 315 of file qpathclipper_p.h.

Referenced by QWingedEdge::addEdge(), and QWingedEdge::removeEdge().

{
    m_next[int(traversal)][int(direction)] = next;
}

setNext() [2/2]

void QPathEdge::setNext ( Direction  direction, int  next  )

inline

Definition at line 320 of file qpathclipper_p.h.

{
    m_next[0][int(direction)] = next;
    m_next[1][int(direction)] = next;
}

vertex()

int QPathEdge::vertex ( Direction  direction ) const

inline

Definition at line 331 of file qpathclipper_p.h.

Referenced by add(), QWingedEdge::addEdge(), QWingedEdge::findInsertStatus(), and QWingedEdge::next().

{
    return direction == Backward ? first : second;
}

Properties

angle

double QPathEdge::angle

Definition at line 151 of file qpathclipper_p.h.

Referenced by QWingedEdge::addEdge(), QWingedEdge::delta(), and QWingedEdge::findInsertStatus().

first

int QPathEdge::first

Definition at line 148 of file qpathclipper_p.h.

Referenced by add(), commonEdge(), directionTo(), QPathClipper::doClip(), findCrossings(), QPathClipper::handleCrossingEdges(), QWingedEdge::isInside(), midPoint(), QWingedEdge::removeEdge(), and vertex().

flag

int QPathEdge::flag

mutable

Definition at line 143 of file qpathclipper_p.h.

Referenced by add(), clear(), QPathClipper::doClip(), QPathClipper::handleCrossingEdges(), QWingedEdge::isInside(), QWingedEdge::simplify(), QWingedEdge::toPath(), and traverse().

invAngle

double QPathEdge::invAngle

Definition at line 152 of file qpathclipper_p.h.

Referenced by QWingedEdge::addEdge(), QWingedEdge::delta(), and QWingedEdge::findInsertStatus().

m_next

int QPathEdge::m_next[2][2]

private

Definition at line 163 of file qpathclipper_p.h.

Referenced by next(), QPathEdge(), and setNext().

second

int QPathEdge::second

Definition at line 149 of file qpathclipper_p.h.

Referenced by commonEdge(), QWingedEdge::delta(), QPathClipper::doClip(), findCrossings(), QPathClipper::handleCrossingEdges(), QWingedEdge::isInside(), midPoint(), QWingedEdge::removeEdge(), and vertex().

windingA

int QPathEdge::windingA

Definition at line 145 of file qpathclipper_p.h.

Referenced by QPathClipper::handleCrossingEdges(), and QWingedEdge::intersectAndAdd().

windingB

int QPathEdge::windingB

Definition at line 146 of file qpathclipper_p.h.

Referenced by QPathClipper::handleCrossingEdges(), and QWingedEdge::intersectAndAdd().

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The documentation for this class was generated from the following file:

• /src/gui/painting/qpathclipper_p.h