QPolygonF¶

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

Synopsis¶

Functions¶

def __add__ (l)
def __eq__ (v)
def __iadd__ (t)
def __iadd__ (t)
def __lshift__ (t)
def __mul__ (, m)
def __mul__ (, m)
def __ne__ (v)
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 isClosed ()
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 swapItemsAt (i, j)
def takeAt (i)
def takeFirst ()
def takeLast ()
def toList ()
def toPolygon ()
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 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:: t – PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.append(t)

Parameters:: t – PySide2.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:: t – PySide2.QtCore.QPointF
Return type:: bool

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

Parameters:

pt – PySide2.QtCore.QPointF
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.QPolygonF.count()¶

Return type:: int

PySide2.QtGui.QPolygonF.count(t)

Parameters:: t – PySide2.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:: t – PySide2.QtCore.QPointF
Return type:: bool

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

Parameters:

t – PySide2.QtCore.QPointF
size – int

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:

t – PySide2.QtCore.QPointF
from – int

Return type:

int

PySide2.QtGui.QPolygonF.insert(i, t)¶

Parameters:

i – int
t – PySide2.QtCore.QPointF

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

Parameters:

i – int
t – PySide2.QtCore.QPointF

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

Parameters:

i – int
n – int
t – PySide2.QtCore.QPointF

PySide2.QtGui.QPolygonF.intersected(r)¶

Parameters:: r – PySide2.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:: r – PySide2.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()¶