QPolygonF

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

Inheritance diagram of PySide2.QtGui.QPolygonF

Synopsis

Functions

Static functions

Detailed Description

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

polygon = QPolygonF()
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 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 QLineF

class PySide2.QtGui.QPolygonF

PySide2.QtGui.QPolygonF(v)

PySide2.QtGui.QPolygonF(a)

PySide2.QtGui.QPolygonF(a)

PySide2.QtGui.QPolygonF(r)

PySide2.QtGui.QPolygonF(v)

PySide2.QtGui.QPolygonF(size)

param size:

int

param a:

PySide2.QtGui.QPolygon

param r:

PySide2.QtCore.QRectF

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.QPolygonF.append(t)
Parameters:

tPySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.append(t)
Parameters:

tPySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.append(l)
Parameters:

l

PySide2.QtGui.QPolygonF.at(i)
Parameters:

i – int

Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.back()
Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.boundingRect()
Return type:

PySide2.QtCore.QRectF

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

See also

isEmpty()

PySide2.QtGui.QPolygonF.capacity()
Return type:

int

PySide2.QtGui.QPolygonF.clear()
PySide2.QtGui.QPolygonF.constData()
Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.constFirst()
Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.constLast()
Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.contains(t)
Parameters:

tPySide2.QtCore.QPointF

Return type:

bool

PySide2.QtGui.QPolygonF.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.QPolygonF.count()
Return type:

int

PySide2.QtGui.QPolygonF.count(t)
Parameters:

tPySide2.QtCore.QPointF

Return type:

int

PySide2.QtGui.QPolygonF.data()
Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.empty()
Return type:

bool

PySide2.QtGui.QPolygonF.endsWith(t)
Parameters:

tPySide2.QtCore.QPointF

Return type:

bool

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

PySide2.QtGui.QPolygonF.first()
Return type:

PySide2.QtCore.QPointF

static PySide2.QtGui.QPolygonF.fromList(list)
Parameters:

list

Return type:

PySide2.QtGui.QPolygonF.front()
Return type:

PySide2.QtCore.QPointF

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

int

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

rPySide2.QtGui.QPolygonF

Return type:

PySide2.QtGui.QPolygonF

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.QPolygonF.intersects(r)
Parameters:

rPySide2.QtGui.QPolygonF

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.QPolygonF.isClosed()
Return type:

bool

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

first() last()

PySide2.QtGui.QPolygonF.isEmpty()
Return type:

bool

PySide2.QtGui.QPolygonF.isSharedWith(other)
Parameters:

other

Return type:

bool

PySide2.QtGui.QPolygonF.last()
Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.lastIndexOf(t[, from=-1])
Parameters:
Return type:

int

PySide2.QtGui.QPolygonF.length()
Return type:

int

PySide2.QtGui.QPolygonF.mid(pos[, len=-1])
Parameters:
  • pos – int

  • len – int

Return type:

PySide2.QtGui.QPolygonF.move(from, to)
Parameters:
  • from – int

  • to – int

PySide2.QtGui.QPolygonF.__ne__(v)
Parameters:

v

Return type:

bool

PySide2.QtGui.QPolygonF.__mul__(m)
Parameters:

mPySide2.QtGui.QMatrix

Return type:

PySide2.QtGui.QPolygonF

PySide2.QtGui.QPolygonF.__mul__(m)
Parameters:

mPySide2.QtGui.QTransform

Return type:

PySide2.QtGui.QPolygonF

PySide2.QtGui.QPolygonF.__add__(l)
Parameters:

l

Return type:

PySide2.QtGui.QPolygonF.__iadd__(t)
Parameters:

tPySide2.QtCore.QPointF

Return type:

PySide2.QtGui.QPolygonF.__iadd__(t)
Parameters:

tPySide2.QtCore.QPointF

Return type:

PySide2.QtGui.QPolygonF.__lshift__(t)
Parameters:

tPySide2.QtCore.QPointF

Return type:

PySide2.QtGui.QPolygonF.__eq__(v)
Parameters:

v

Return type:

bool

PySide2.QtGui.QPolygonF.operator[](i)
Parameters:

i – int

Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.pop_back()
PySide2.QtGui.QPolygonF.pop_front()
PySide2.QtGui.QPolygonF.prepend(t)
Parameters:

tPySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.prepend(t)
Parameters:

tPySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.push_back(t)
Parameters:

tPySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.push_back(t)
Parameters:

tPySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.push_front(t)
Parameters:

tPySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.push_front(t)
Parameters:

tPySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.remove(i)
Parameters:

i – int

PySide2.QtGui.QPolygonF.remove(i, n)
Parameters:
  • i – int

  • n – int

PySide2.QtGui.QPolygonF.removeAll(t)
Parameters:

tPySide2.QtCore.QPointF

Return type:

int

PySide2.QtGui.QPolygonF.removeAt(i)
Parameters:

i – int

PySide2.QtGui.QPolygonF.removeFirst()
PySide2.QtGui.QPolygonF.removeLast()
PySide2.QtGui.QPolygonF.removeOne(t)
Parameters:

tPySide2.QtCore.QPointF

Return type:

bool

PySide2.QtGui.QPolygonF.replace(i, t)
Parameters:
PySide2.QtGui.QPolygonF.reserve(size)
Parameters:

size – int

PySide2.QtGui.QPolygonF.resize(size)
Parameters:

size – int

PySide2.QtGui.QPolygonF.setSharable(sharable)
Parameters:

sharable – bool

PySide2.QtGui.QPolygonF.shrink_to_fit()
PySide2.QtGui.QPolygonF.size()
Return type:

int

PySide2.QtGui.QPolygonF.squeeze()
PySide2.QtGui.QPolygonF.startsWith(t)
Parameters:

tPySide2.QtCore.QPointF

Return type:

bool

PySide2.QtGui.QPolygonF.subtracted(r)
Parameters:

rPySide2.QtGui.QPolygonF

Return type:

PySide2.QtGui.QPolygonF

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.QPolygonF.swap(other)
Parameters:

otherPySide2.QtGui.QPolygonF

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

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

  • j – int

PySide2.QtGui.QPolygonF.takeAt(i)
Parameters:

i – int

Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.takeFirst()
Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.takeLast()
Return type:

PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.toList()
Return type:

PySide2.QtGui.QPolygonF.toPolygon()
Return type:

PySide2.QtGui.QPolygon

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

See also

toPoint()

PySide2.QtGui.QPolygonF.translate(offset)
Parameters:

offsetPySide2.QtCore.QPointF

Translate all points in the polygon by the given offset .

See also

translated()

PySide2.QtGui.QPolygonF.translate(dx, dy)
Parameters:
  • dx – float

  • dy – float

This is an overloaded function.

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

See also

translated()

PySide2.QtGui.QPolygonF.translated(offset)
Parameters:

offsetPySide2.QtCore.QPointF

Return type:

PySide2.QtGui.QPolygonF

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

See also

translate()

PySide2.QtGui.QPolygonF.translated(dx, dy)
Parameters:
  • dx – float

  • dy – float

Return type:

PySide2.QtGui.QPolygonF

This is an overloaded function.

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

See also

translate()

PySide2.QtGui.QPolygonF.united(r)
Parameters:

rPySide2.QtGui.QPolygonF

Return type:

PySide2.QtGui.QPolygonF

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.

PySide2.QtGui.QPolygonF.value(i)
Parameters:

i – int

Return type:

PySide2.QtCore.QPointF

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

PySide2.QtCore.QPointF