QPolygon¶

The QPolygon class provides a vector of points using integer precision. More…

Synopsis¶

Functions¶

def __add__ (l)
def __eq__ (v)
def __iadd__ (t)
def __iadd__ (t)
def __lshift__ (l)
def __lshift__ (t)
def __lshift__ (t)
def __mul__ (, m)
def __mul__ (, m)
def __ne__ (v)
def __reduce__ ()
def append (l)
def append (t)
def append (t)
def at (i)
def back ()
def boundingRect ()
def capacity ()
def clear ()
def constData ()
def constFirst ()
def constLast ()
def contains (t)
def containsPoint (pt, fillRule)
def count ()
def count (t)
def data ()
def empty ()
def endsWith (t)
def fill (t[, size=-1])
def first ()
def front ()
def indexOf (t[, from=0])
def insert (i, n, t)
def insert (i, t)
def insert (i, t)
def intersected (r)
def intersects (r)
def isEmpty ()
def isSharedWith (other)
def last ()
def lastIndexOf (t[, from=-1])
def length ()
def mid (pos[, len=-1])
def move (from, to)
def operator[] (i)
def pop_back ()
def pop_front ()
def prepend (t)
def prepend (t)
def push_back (t)
def push_back (t)
def push_front (t)
def push_front (t)
def remove (i)
def remove (i, n)
def removeAll (t)
def removeAt (i)
def removeFirst ()
def removeLast ()
def removeOne (t)
def replace (i, t)
def reserve (size)
def resize (size)
def setSharable (sharable)
def shrink_to_fit ()
def size ()
def squeeze ()
def startsWith (t)
def subtracted (r)
def swap (other)
def takeAt (i)
def takeFirst ()
def takeLast ()
def toList ()
def translate (dx, dy)
def translate (offset)
def translated (dx, dy)
def translated (offset)
def united (r)
def value (i)
def value (i, defaultValue)

Static functions¶

def fromList (list)

Detailed Description¶

A QPolygon object is a QVector < QPoint >. The easiest way to add points to a QPolygon is to use QVector ‘s streaming operator, as illustrated below:
polygon = QPolygon()
polygon << QPoint(10, 20) << QPoint(20, 30)
In addition to the functions provided by QVector , QPolygon provides some point-specific functions.

Each point in a polygon can be retrieved by passing its index to the point() function. To populate the polygon, QPolygon provides the setPoint() function to set the point at a given index, the setPoints() function to set all the points in the polygon (resizing it to the given number of points), and the putPoints() function which copies a number of given points into the polygon from a specified index (resizing the polygon if necessary).

QPolygon provides the boundingRect() and translate() functions for geometry functions. Use the map() function for more general transformations of QPolygons.

The QPolygon class is implicitly shared .

See also

QVector QPolygonF QLine

class QPolygon¶

QPolygon(v)

QPolygon(other)

QPolygon(r[, closed=false])

QPolygon(v)

QPolygon(size)

param closed

bool

param size

int

param other

QPolygon

param r

QRect

param v

QVector

Constructs a polygon with no points.

See also

isEmpty()

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

See also

isEmpty()

PySide2.QtGui.QPolygon.__reduce__()¶

Return type: PyObject

PySide2.QtGui.QPolygon.append(t)¶

Parameters: t – QPoint

PySide2.QtGui.QPolygon.append(t)

Parameters: t – QPoint

PySide2.QtGui.QPolygon.append(l)

Parameters: l –

PySide2.QtGui.QPolygon.at(i)¶

Parameters: i – int
Return type: QPoint

PySide2.QtGui.QPolygon.back()¶

Return type: QPoint

PySide2.QtGui.QPolygon.boundingRect()¶

Return type: QRect

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

See also

isEmpty()

PySide2.QtGui.QPolygon.capacity()¶

Return type: int

PySide2.QtGui.QPolygon.clear()¶

PySide2.QtGui.QPolygon.constData()¶

Return type: QPoint

PySide2.QtGui.QPolygon.constFirst()¶

Return type: QPoint

PySide2.QtGui.QPolygon.constLast()¶

Return type: QPoint

PySide2.QtGui.QPolygon.contains(t)¶

Parameters: t – QPoint
Return type: bool

PySide2.QtGui.QPolygon.containsPoint(pt, fillRule)¶

Parameters

pt – QPoint
fillRule – FillRule

Return type

bool

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

PySide2.QtGui.QPolygon.count()¶

Return type: int

PySide2.QtGui.QPolygon.count(t)

Parameters: t – QPoint
Return type: int

PySide2.QtGui.QPolygon.data()¶

Return type: QPoint

PySide2.QtGui.QPolygon.empty()¶

Return type: bool

PySide2.QtGui.QPolygon.endsWith(t)¶

Parameters: t – QPoint
Return type: bool

PySide2.QtGui.QPolygon.fill(t[, size=-1])¶

Parameters

t – QPoint
size – int

Return type

PySide2.QtGui.QPolygon.first()¶

Return type: QPoint

static PySide2.QtGui.QPolygon.fromList(list)¶

Parameters: list –
Return type

PySide2.QtGui.QPolygon.front()¶

Return type: QPoint

PySide2.QtGui.QPolygon.indexOf(t[, from=0])¶

Parameters

t – QPoint
from – int

Return type

int

PySide2.QtGui.QPolygon.insert(i, t)¶

Parameters

i – int
t – QPoint

PySide2.QtGui.QPolygon.insert(i, t)

Parameters

i – int
t – QPoint

PySide2.QtGui.QPolygon.insert(i, n, t)

Parameters

i – int
n – int
t – QPoint

PySide2.QtGui.QPolygon.intersected(r)¶

Parameters: r – QPolygon
Return type: QPolygon

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.

See also

intersects()

PySide2.QtGui.QPolygon.intersects(r)¶

Parameters: r – QPolygon
Return type: bool

Returns true if the current polygon intersects at any point the given polygon p . Also returns true if the current polygon contains or is contained by any part of p .

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

See also

intersected()

PySide2.QtGui.QPolygon.isEmpty()¶

Return type: bool

PySide2.QtGui.QPolygon.isSharedWith(other)¶

Parameters: other –
Return type: bool

PySide2.QtGui.QPolygon.last()¶

Return type: QPoint

PySide2.QtGui.QPolygon.lastIndexOf(t[, from=-1])¶

Parameters

t – QPoint
from – int

Return type

int

PySide2.QtGui.QPolygon.length()¶

Return type: int

PySide2.QtGui.QPolygon.mid(pos[, len=-1])¶

Parameters

pos – int
len – int

Return type

PySide2.QtGui.QPolygon.move(from, to)¶

Parameters

from – int
to – int

PySide2.QtGui.QPolygon.__ne__(v)¶

Parameters: v –
Return type: bool

PySide2.QtGui.QPolygon.__mul__(m)¶

Parameters: m – QTransform
Return type: QPolygon

PySide2.QtGui.QPolygon.__mul__(m)

Parameters: m – QMatrix
Return type: QPolygon

PySide2.QtGui.QPolygon.__add__(l)¶

Parameters: l –
Return type

PySide2.QtGui.QPolygon.__iadd__(t)¶

Parameters: t – QPoint
Return type

PySide2.QtGui.QPolygon.__iadd__(t)

Parameters: t – QPoint
Return type

PySide2.QtGui.QPolygon.__lshift__(t)¶

Parameters: t – QPoint
Return type

PySide2.QtGui.QPolygon.__lshift__(t)

Parameters: t – QPoint
Return type

PySide2.QtGui.QPolygon.__lshift__(l)

Parameters: l –
Return type

PySide2.QtGui.QPolygon.__eq__(v)¶

Parameters: v –
Return type: bool

PySide2.QtGui.QPolygon.operator[](i)

Parameters: i – int
Return type: QPoint

PySide2.QtGui.QPolygon.pop_back()¶

PySide2.QtGui.QPolygon.pop_front()¶

PySide2.QtGui.QPolygon.prepend(t)¶

Parameters: t – QPoint

PySide2.QtGui.QPolygon.prepend(t)

Parameters: t – QPoint

PySide2.QtGui.QPolygon.push_back(t)¶

Parameters: t – QPoint

PySide2.QtGui.QPolygon.push_back(t)

Parameters: t – QPoint

PySide2.QtGui.QPolygon.push_front(t)¶

Parameters: t – QPoint

PySide2.QtGui.QPolygon.push_front(t)

Parameters: t – QPoint

PySide2.QtGui.QPolygon.remove(i)¶

Parameters: i – int

PySide2.QtGui.QPolygon.remove(i, n)

Parameters

i – int
n – int

PySide2.QtGui.QPolygon.removeAll(t)¶

Parameters: t – QPoint
Return type: int

PySide2.QtGui.QPolygon.removeAt(i)¶

Parameters: i – int

PySide2.QtGui.QPolygon.removeFirst()¶

PySide2.QtGui.QPolygon.removeLast()¶

PySide2.QtGui.QPolygon.removeOne(t)¶

Parameters: t – QPoint
Return type: bool

PySide2.QtGui.QPolygon.replace(i, t)¶

Parameters

i – int
t – QPoint

PySide2.QtGui.QPolygon.reserve(size)¶

Parameters: size – int

PySide2.QtGui.QPolygon.resize(size)¶

Parameters: size – int

PySide2.QtGui.QPolygon.setSharable(sharable)¶

Parameters: sharable – bool

PySide2.QtGui.QPolygon.shrink_to_fit()¶

PySide2.QtGui.QPolygon.size()¶

Return type: int

PySide2.QtGui.QPolygon.squeeze()¶

PySide2.QtGui.QPolygon.startsWith(t)¶

Parameters: t – QPoint
Return type: bool

PySide2.QtGui.QPolygon.subtracted(r)¶

Parameters: r – QPolygon
Return type: QPolygon

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.

PySide2.QtGui.QPolygon.swap(other)¶

Parameters: other – QPolygon

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

PySide2.QtGui.QPolygon.takeAt(i)¶

Parameters: i – int
Return type: QPoint

PySide2.QtGui.QPolygon.takeFirst()¶

Return type: QPoint

PySide2.QtGui.QPolygon.takeLast()¶

Return type: QPoint

PySide2.QtGui.QPolygon.toList()¶

Return type

PySide2.QtGui.QPolygon.translate(offset)¶

Parameters: offset – QPoint

This is an overloaded function.

Translates all points in the polygon by the given offset .

See also

translated()

PySide2.QtGui.QPolygon.translate(dx, dy)

Parameters

dx – int
dy – int

Translates all points in the polygon by (dx , dy ).

See also

translated()

PySide2.QtGui.QPolygon.translated(offset)¶

Parameters: offset – QPoint
Return type: QPolygon

This is an overloaded function.

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

See also

translate()

PySide2.QtGui.QPolygon.translated(dx, dy)

Parameters

dx – int
dy – int

Return type

QPolygon

Returns a copy of the polygon that is translated by (dx , dy ).

See also

translate()

PySide2.QtGui.QPolygon.united(r)¶

Parameters: r – QPolygon
Return type: QPolygon

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

Set operations on polygons, will treat the polygons as areas, and implicitly close the polygon.

See also

intersected() subtracted()

PySide2.QtGui.QPolygon.value(i)¶

Parameters: i – int
Return type: QPoint

PySide2.QtGui.QPolygon.value(i, defaultValue)

Parameters

i – int
defaultValue – QPoint

Return type

QPoint

Qt Documentation

Table of Contents

QPolygon¶

Synopsis¶

Functions¶

Static functions¶

Detailed Description¶