QPolygon

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

Inheritance diagram of PySide2.QtGui.QPolygon

Synopsis

Functions

Static functions

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 PySide2.QtGui.QPolygon

PySide2.QtGui.QPolygon(v)

PySide2.QtGui.QPolygon(other)

PySide2.QtGui.QPolygon(r[, closed=false])

PySide2.QtGui.QPolygon(v)

PySide2.QtGui.QPolygon(size)

param closed

bool

param size

int

param other

PySide2.QtGui.QPolygon

param r

PySide2.QtCore.QRect

param v

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

object

PySide2.QtGui.QPolygon.append(t)
Parameters

tPySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.append(t)
Parameters

tPySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.append(l)
Parameters

l

PySide2.QtGui.QPolygon.at(i)
Parameters

i – int

Return type

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.back()
Return type

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.boundingRect()
Return type

PySide2.QtCore.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

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.constFirst()
Return type

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.constLast()
Return type

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.contains(t)
Parameters

tPySide2.QtCore.QPoint

Return type

bool

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

tPySide2.QtCore.QPoint

Return type

int

PySide2.QtGui.QPolygon.data()
Return type

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.empty()
Return type

bool

PySide2.QtGui.QPolygon.endsWith(t)
Parameters

tPySide2.QtCore.QPoint

Return type

bool

PySide2.QtGui.QPolygon.fill(t[, size=-1])
Parameters
Return type

PySide2.QtGui.QPolygon.first()
Return type

PySide2.QtCore.QPoint

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

list

Return type

PySide2.QtGui.QPolygon.front()
Return type

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.indexOf(t[, from=0])
Parameters
Return type

int

PySide2.QtGui.QPolygon.insert(i, t)
Parameters
PySide2.QtGui.QPolygon.insert(i, t)
Parameters
PySide2.QtGui.QPolygon.insert(i, n, t)
Parameters
PySide2.QtGui.QPolygon.intersected(r)
Parameters

rPySide2.QtGui.QPolygon

Return type

PySide2.QtGui.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

rPySide2.QtGui.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

PySide2.QtCore.QPoint

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

mPySide2.QtGui.QMatrix

Return type

PySide2.QtGui.QPolygon

PySide2.QtGui.QPolygon.__mul__(m)
Parameters

mPySide2.QtGui.QTransform

Return type

PySide2.QtGui.QPolygon

PySide2.QtGui.QPolygon.__add__(l)
Parameters

l

Return type

PySide2.QtGui.QPolygon.__iadd__(t)
Parameters

tPySide2.QtCore.QPoint

Return type

PySide2.QtGui.QPolygon.__iadd__(t)
Parameters

tPySide2.QtCore.QPoint

Return type

PySide2.QtGui.QPolygon.__lshift__(t)
Parameters

tPySide2.QtCore.QPoint

Return type

PySide2.QtGui.QPolygon.__lshift__(t)
Parameters

tPySide2.QtCore.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

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.pop_back()
PySide2.QtGui.QPolygon.pop_front()
PySide2.QtGui.QPolygon.prepend(t)
Parameters

tPySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.prepend(t)
Parameters

tPySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.push_back(t)
Parameters

tPySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.push_back(t)
Parameters

tPySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.push_front(t)
Parameters

tPySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.push_front(t)
Parameters

tPySide2.QtCore.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

tPySide2.QtCore.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

tPySide2.QtCore.QPoint

Return type

bool

PySide2.QtGui.QPolygon.replace(i, t)
Parameters
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

tPySide2.QtCore.QPoint

Return type

bool

PySide2.QtGui.QPolygon.subtracted(r)
Parameters

rPySide2.QtGui.QPolygon

Return type

PySide2.QtGui.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

otherPySide2.QtGui.QPolygon

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

PySide2.QtGui.QPolygon.swapItemsAt(i, j)
Parameters
  • i – int

  • j – int

PySide2.QtGui.QPolygon.takeAt(i)
Parameters

i – int

Return type

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.takeFirst()
Return type

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.takeLast()
Return type

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.toList()
Return type

PySide2.QtGui.QPolygon.translate(offset)
Parameters

offsetPySide2.QtCore.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

offsetPySide2.QtCore.QPoint

Return type

PySide2.QtGui.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

PySide2.QtGui.QPolygon

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

See also

translate()

PySide2.QtGui.QPolygon.united(r)
Parameters

rPySide2.QtGui.QPolygon

Return type

PySide2.QtGui.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.

PySide2.QtGui.QPolygon.value(i)
Parameters

i – int

Return type

PySide2.QtCore.QPoint

PySide2.QtGui.QPolygon.value(i, defaultValue)
Parameters
Return type

PySide2.QtCore.QPoint