QLine#

The QLine class provides a two-dimensional vector using integer precision. More…

Synopsis#

Functions#

def __reduce__ ()
def __repr__ ()
def center ()
def dx ()
def dy ()
def isNull ()
def __ne__ (d)
def __mul__ (m)
def __eq__ (d)
def p1 ()
def p2 ()
def setLine (x1, y1, x2, y2)
def setP1 (p1)
def setP2 (p2)
def setPoints (p1, p2)
def toLineF ()
def toTuple ()
def translate (p)
def translate (dx, dy)
def translated (p)
def translated (dx, dy)
def x1 ()
def x2 ()
def y1 ()
def y2 ()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

Detailed Description#

A QLine describes a finite length line (or a line segment) on a two-dimensional surface. The start and end points of the line are specified using integer point accuracy for coordinates. Use the QLineF constructor to retrieve a floating point copy.

The positions of the line’s start and end points can be retrieved using the p1() , x1() , y1() , p2() , x2() , and y2() functions. The dx() and dy() functions return the horizontal and vertical components of the line. Use isNull() to determine whether the QLine represents a valid line or a null line.

Finally, the line can be translated a given offset using the translate() function.

See also

QLineF QPolygon QRect

class PySide6.QtCore.QLine#

PySide6.QtCore.QLine(pt1, pt2)

PySide6.QtCore.QLine(x1, y1, x2, y2)

Parameters:

x2 – int
pt2 – PySide6.QtCore.QPoint
x1 – int
pt1 – PySide6.QtCore.QPoint
y1 – int
y2 – int

Constructs a null line.

Constructs a line object that represents the line between p1 and p2.

Constructs a line object that represents the line between (x1, y1) and (x2, y2).

PySide6.QtCore.QLine.__reduce__()#

Return type:: object

PySide6.QtCore.QLine.__repr__()#

Return type:: object

PySide6.QtCore.QLine.center()#

Return type:: PySide6.QtCore.QPoint

Returns the center point of this line. This is equivalent to ( p1() + p2() ) / 2, except it will never overflow.

PySide6.QtCore.QLine.dx()#

Return type:: int

Returns the horizontal component of the line’s vector.

See also

dy()

PySide6.QtCore.QLine.dy()#

Return type:: int

Returns the vertical component of the line’s vector.

See also

dx()

PySide6.QtCore.QLine.isNull()#

Return type:: bool

Returns true if the line does not have distinct start and end points; otherwise returns false.

PySide6.QtCore.QLine.__ne__(d)#

Parameters:: d – PySide6.QtCore.QLine
Return type:: bool

Returns true if the given line is not the same as this line.

A line is different from another line if any of their start or end points differ, or the internal order of the points is different.

PySide6.QtCore.QLine.__mul__(m)#

Parameters:: m – PySide6.QtGui.QTransform
Return type:: PySide6.QtCore.QLine

PySide6.QtCore.QLine.__eq__(d)#

Parameters:: d – PySide6.QtCore.QLine
Return type:: bool

Returns true if the given line is the same as this line.

A line is identical to another line if the start and end points are identical, and the internal order of the points is the same.

PySide6.QtCore.QLine.p1()#

Return type:: PySide6.QtCore.QPoint

Returns the line’s start point.

See also

setP1() x1() y1() p2()

PySide6.QtCore.QLine.p2()#

Return type:: PySide6.QtCore.QPoint

Returns the line’s end point.

See also

setP2() x2() y2() p1()

PySide6.QtCore.QLine.setLine(x1, y1, x2, y2)#

Parameters:

x1 – int
y1 – int
x2 – int
y2 – int

Sets this line to the start in x1, y1 and end in x2, y2.

See also

setP1() setP2() p1() p2()

PySide6.QtCore.QLine.setP1(p1)#

Parameters:: p1 – PySide6.QtCore.QPoint

Sets the starting point of this line to p1.

See also

setP2() p1()

PySide6.QtCore.QLine.setP2(p2)#

Parameters:: p2 – PySide6.QtCore.QPoint

Sets the end point of this line to p2.

See also

setP1() p2()

PySide6.QtCore.QLine.setPoints(p1, p2)#

Parameters:

p1 – PySide6.QtCore.QPoint
p2 – PySide6.QtCore.QPoint

Sets the start point of this line to p1 and the end point of this line to p2.

See also

setP1() setP2() p1() p2()

PySide6.QtCore.QLine.toLineF()#

Return type:: PySide6.QtCore.QLineF

Returns this line as a line with floating point accuracy.

See also

toLine()

PySide6.QtCore.QLine.toTuple()#

Return type:: object

PySide6.QtCore.QLine.translate(p)#

Parameters:: p – PySide6.QtCore.QPoint

Translates this line by the given offset.

PySide6.QtCore.QLine.translate(dx, dy)

Parameters:

dx – int
dy – int

This is an overloaded function.

Translates this line the distance specified by dx and dy.

PySide6.QtCore.QLine.translated(p)#

Parameters:: p – PySide6.QtCore.QPoint
Return type:: PySide6.QtCore.QLine

Returns this line translated by the given offset.

PySide6.QtCore.QLine.translated(dx, dy)

Parameters:

dx – int
dy – int

Return type:

PySide6.QtCore.QLine

This is an overloaded function.

Returns this line translated the distance specified by dx and dy.

PySide6.QtCore.QLine.x1()#

Return type:: int

Returns the x-coordinate of the line’s start point.

See also

p1()

PySide6.QtCore.QLine.x2()#

Return type:: int

Returns the x-coordinate of the line’s end point.

See also

p2()

PySide6.QtCore.QLine.y1()#

Return type:: int

Returns the y-coordinate of the line’s start point.

See also

p1()

PySide6.QtCore.QLine.y2()#

Return type:: int

Returns the y-coordinate of the line’s end point.

See also

p2()