QLine

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

Inheritance diagram of PySide2.QtCore.QLine

Synopsis

Functions

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.

qline-point1

qline-coordinates2

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 PySide2.QtCore.QLine

PySide2.QtCore.QLine(QLine)

PySide2.QtCore.QLine(pt1, pt2)

PySide2.QtCore.QLine(x1, y1, x2, y2)

param QLine

PySide2.QtCore.QLine

param y1

int

param y2

int

param pt1

PySide2.QtCore.QPoint

param x1

int

param pt2

PySide2.QtCore.QPoint

param x2

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 ).

PySide2.QtCore.QLine.__reduce__()
Return type

object

PySide2.QtCore.QLine.__repr__()
Return type

object

PySide2.QtCore.QLine.center()
Return type

PySide2.QtCore.QPoint

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

PySide2.QtCore.QLine.dx()
Return type

int

Returns the horizontal component of the line’s vector.

See also

dy()

PySide2.QtCore.QLine.dy()
Return type

int

Returns the vertical component of the line’s vector.

See also

dx()

PySide2.QtCore.QLine.isNull()
Return type

bool

Returns true if the line is not set up with valid start and end point; otherwise returns false .

PySide2.QtCore.QLine.__ne__(d)
Parameters

dPySide2.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.

PySide2.QtCore.QLine.__mul__(m)
Parameters

mPySide2.QtGui.QMatrix

Return type

PySide2.QtCore.QLine

PySide2.QtCore.QLine.__mul__(m)
Parameters

mPySide2.QtGui.QTransform

Return type

PySide2.QtCore.QLine

PySide2.QtCore.QLine.__eq__(d)
Parameters

dPySide2.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.

PySide2.QtCore.QLine.p1()
Return type

PySide2.QtCore.QPoint

Returns the line’s start point.

See also

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

PySide2.QtCore.QLine.p2()
Return type

PySide2.QtCore.QPoint

Returns the line’s end point.

See also

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

PySide2.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 .

PySide2.QtCore.QLine.setP1(p1)
Parameters

p1PySide2.QtCore.QPoint

Sets the starting point of this line to p1 .

See also

setP2() p1()

PySide2.QtCore.QLine.setP2(p2)
Parameters

p2PySide2.QtCore.QPoint

Sets the end point of this line to p2 .

See also

setP1() p2()

PySide2.QtCore.QLine.setPoints(p1, p2)
Parameters

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

PySide2.QtCore.QLine.toTuple()
Return type

object

PySide2.QtCore.QLine.translate(p)
Parameters

pPySide2.QtCore.QPoint

Translates this line by the given offset .

PySide2.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 .

PySide2.QtCore.QLine.translated(p)
Parameters

pPySide2.QtCore.QPoint

Return type

PySide2.QtCore.QLine

Returns this line translated by the given offset .

PySide2.QtCore.QLine.translated(dx, dy)
Parameters
  • dx – int

  • dy – int

Return type

PySide2.QtCore.QLine

This is an overloaded function.

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

PySide2.QtCore.QLine.x1()
Return type

int

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

See also

p1()

PySide2.QtCore.QLine.x2()
Return type

int

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

See also

p2()

PySide2.QtCore.QLine.y1()
Return type

int

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

See also

p1()

PySide2.QtCore.QLine.y2()
Return type

int

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

See also

p2()