QtGui.QPolygonF Class Reference

The QPolygonF class provides a vector of points using floating point precision. More...

Inheritance diagram for QtGui.QPolygonF:

Collaboration diagram for QtGui.QPolygonF:

Public Member Functions
	QPolygonF ()
	QPolygonF (QPolygonF a)
	QPolygonF (QRectF r)
	QPolygonF (QPolygon a)
	QPolygonF (int size)
	QPolygonF (System.Collections.Generic.List< QPointF > v)
virtual void	CreateProxy ()
new QRectF	BoundingRect ()
new bool	ContainsPoint (QPointF pt, Qt.FillRule fillRule)
new QPolygonF	Intersected (QPolygonF r)
new bool	IsClosed ()
new QPolygonF	Subtracted (QPolygonF r)
new void	Swap (QPolygonF other)
new QPolygon	ToPolygon ()
new void	Translate (QPointF offset)
new void	Translate (double dx, double dy)
new QPolygonF	Translated (QPointF offset)
new QPolygonF	Translated (double dx, double dy)
new QPolygonF	United (QPolygonF r)
new void	Dispose ()

Static Public Member Functions
static QPolygonF	operator* (QPolygonF arg1, QTransform arg2)
static QPolygonF	operator* (QPolygonF arg1, QMatrix arg2)

Protected Member Functions
	QPolygonF (System.Type dummy)

Protected Attributes
SmokeInvocation	interceptor

Properties
virtual System.IntPtr	SmokeObject [get, set]

Detailed Description

The QPolygonF class provides a vector of points using floating point precision.

A QPolygonF is a QVector<QPointF>. The easiest way to add points to a QPolygonF is to use its streaming operator, as illustrated below:

QPolygonF polygon;

polygon << QPointF(10.4, 20.5) << QPointF(20.2, 30.2);

In addition to the functions provided by QVector, QPolygonF provides the boundingRect() and translate() functions for geometry operations. Use the QMatrix::map() function for more general transformations of QPolygonFs.

QPolygonF also provides the isClosed() function to determine whether a polygon's start and end points are the same, and the toPolygon() function returning an integer precision copy of this polygon.

The QPolygonF class is implicitly shared.

See also QVector, QPolygon, and QLineF.

Constructor & Destructor Documentation

QtGui.QPolygonF.QPolygonF ( System.Type  dummy )

protected

QtGui.QPolygonF.QPolygonF

(

)

Constructs a polygon with no points.

See also QVector::isEmpty().

QtGui.QPolygonF.QPolygonF

(

QPolygonF

a

)

Constructs a copy of the given polygon.

QtGui.QPolygonF.QPolygonF

(

QRectF

r

)

Constructs a closed polygon from the specified rectangle.

The polygon contains the four vertices of the rectangle in clockwise order starting and ending with the top-left vertex.

See also isClosed().

QtGui.QPolygonF.QPolygonF

(

QPolygon

a

)

Constructs a float based polygon from the specified integer based polygon.

See also toPolygon().

QtGui.QPolygonF.QPolygonF

(

int

size

)

Constructs a polygon of the given size. Creates an empty polygon if size == 0.

See also QVector::isEmpty().

QtGui.QPolygonF.QPolygonF

(

System.Collections.Generic.List< QPointF >

v

)

Constructs a polygon containing the specified points.

Member Function Documentation

new QRectF QtGui.QPolygonF.BoundingRect

(

)

Returns the bounding rectangle of the polygon, or QRectF(0,0,0,0) if the polygon is empty.

See also QVector::isEmpty().

new bool QtGui.QPolygonF.ContainsPoint	(	QPointF	pt,
		Qt.FillRule	fillRule
	)

Returns true if the given point is inside the polygon according to the specified fillRule; otherwise returns false.

This function was introduced in Qt 4.3.

virtual void QtGui.QPolygonF.CreateProxy ( )

virtual

new void QtGui.QPolygonF.Dispose

(

)

new QPolygonF QtGui.QPolygonF.Intersected

(

QPolygonF

r

)

Returns a polygon which is the intersection of this polygon and r.

Set operations on polygons will treat the polygons as areas. Non-closed polygons will be treated as implicitly closed.

This function was introduced in Qt 4.3.

new bool QtGui.QPolygonF.IsClosed

(

)

Returns true if the polygon is closed; otherwise returns false.

A polygon is said to be closed if its start point and end point are equal.

See also QVector::first() and QVector::last().

static QPolygonF QtGui.QPolygonF.operator* ( QPolygonF  arg1, QTransform  arg2  )

static

static QPolygonF QtGui.QPolygonF.operator* ( QPolygonF  arg1, QMatrix  arg2  )

static

new QPolygonF QtGui.QPolygonF.Subtracted

(

QPolygonF

r

)

Returns a polygon which is r subtracted from this polygon.

Set operations on polygons will treat the polygons as areas. Non-closed polygons will be treated as implicitly closed.

This function was introduced in Qt 4.3.

new void QtGui.QPolygonF.Swap

(

QPolygonF

other

)

Swaps polygon other with this polygon. This operation is very fast and never fails.

This function was introduced in Qt 4.8.

new QPolygon QtGui.QPolygonF.ToPolygon

(

)

Creates and returns a QPolygon by converting each QPointF to a QPoint.

See also QPointF::toPoint().

new void QtGui.QPolygonF.Translate

(

QPointF

offset

)

Translate all points in the polygon by the given offset.

See also translated().

new void QtGui.QPolygonF.Translate	(	double	dx,
		double	dy
	)

Translate all points in the polygon by the given offset.

See also translated().

new QPolygonF QtGui.QPolygonF.Translated

(

QPointF

offset

)

Returns a copy of the polygon that is translated by the given offset.

This function was introduced in Qt 4.6.

See also translate().

new QPolygonF QtGui.QPolygonF.Translated	(	double	dx,
		double	dy
	)

Returns a copy of the polygon that is translated by the given offset.

This function was introduced in Qt 4.6.

See also translate().

new QPolygonF QtGui.QPolygonF.United

(

QPolygonF

r

)

Returns a polygon which is the union of this polygon and r.

Set operations on polygons will treat the polygons as areas. Non-closed polygons will be treated as implicitly closed.

This function was introduced in Qt 4.3.

See also intersected() and subtracted().

Member Data Documentation

SmokeInvocation QtGui.QPolygonF.interceptor

protected

Property Documentation

virtual System.IntPtr QtGui.QPolygonF.SmokeObject

getset