QVector2D

Note

This class was introduced in Qt 4.6

Synopsis

Functions

• def __add__ (, v2)
• def __div__ (, divisor)
• def __eq__ (, v2)
• def __iadd__ (vector)
• def __idiv__ (divisor)
• def __imul__ (factor)
• def __imul__ (vector)
• def __isub__ (vector)
• def __mul__ (, factor)
• def __mul__ (, v2)
• def __mul__ (factor)
• def __ne__ (, v2)
• def __reduce__ ()
• def __repr__ ()
• def __sub__ ()
• def __sub__ (, v2)
• def isNull ()
• def length ()
• def lengthSquared ()
• def normalize ()
• def normalized ()
• def setX (x)
• def setY (y)
• def toPoint ()
• def toPointF ()
• def toTuple ()
• def toVector3D ()
• def toVector4D ()
• def x ()
• def y ()

Static functions

• def dotProduct (v1, v2)

Detailed Description

The PySide.QtGui.QVector2D class represents a vector or vertex in 2D space.

The PySide.QtGui.QVector2D class can also be used to represent vertices in 2D space. We therefore do not need to provide a separate vertex class.

Note

By design values in the PySide.QtGui.QVector2D instance are stored as float . This means that on platforms where the qreal arguments to PySide.QtGui.QVector2D functions are represented by double values, it is possible to lose precision.

See also

PySide.QtGui.QVector3D PySide.QtGui.QVector4D PySide.QtGui.QQuaternion

class PySide.QtGui.QVector2D

class PySide.QtGui.QVector2D(point)

class PySide.QtGui.QVector2D(point)

class PySide.QtGui.QVector2D(QVector2D)

class PySide.QtGui.QVector2D(vector)

class PySide.QtGui.QVector2D(vector)

class PySide.QtGui.QVector2D(xpos, ypos)

Parameters:

• vector – PySide.QtGui.QVector3D
• point – PySide.QtCore.QPoint
• ypos – PySide.QtCore.qreal
• xpos – PySide.QtCore.qreal
• QVector2D – PySide.QtGui.QVector2D

Constructs a null vector, i.e. with coordinates (0, 0, 0).

Constructs a vector with x and y coordinates from a 2D point .

Constructs a vector with x and y coordinates from a 2D point .

Constructs a vector with x and y coordinates from a 3D vector . The z coordinate of vector is dropped.

See also

PySide.QtGui.QVector2D.toVector3D()

Constructs a vector with x and y coordinates from a 3D vector . The z and w coordinates of vector are dropped.

See also

PySide.QtGui.QVector2D.toVector4D()

Constructs a vector with coordinates (xpos , ypos ).

PySide.QtGui.QVector2D.__reduce__()

Return type:PyObject

PySide.QtGui.QVector2D.__repr__()

Return type:PyObject

static PySide.QtGui.QVector2D.dotProduct(v1, v2)

Parameters:

• v1 – PySide.QtGui.QVector2D
• v2 – PySide.QtGui.QVector2D

Return type:

PySide.QtCore.qreal

Returns the dot product of v1 and v2 .

PySide.QtGui.QVector2D.isNull()

Return type:PySide.QtCore.bool

Returns true if the x and y coordinates are set to 0.0, otherwise returns false.

PySide.QtGui.QVector2D.length()

Return type:PySide.QtCore.qreal

Returns the length of the vector from the origin.

See also

PySide.QtGui.QVector2D.lengthSquared() PySide.QtGui.QVector2D.normalized()

PySide.QtGui.QVector2D.lengthSquared()

Return type:PySide.QtCore.qreal

Returns the squared length of the vector from the origin. This is equivalent to the dot product of the vector with itself.

See also

PySide.QtGui.QVector2D.length() PySide.QtGui.QVector2D.dotProduct()

PySide.QtGui.QVector2D.normalize()

Normalizes the currect vector in place. Nothing happens if this vector is a null vector or the length of the vector is very close to 1.

See also

PySide.QtGui.QVector2D.length() PySide.QtGui.QVector2D.normalized()

PySide.QtGui.QVector2D.normalized()

Return type:PySide.QtGui.QVector2D

Returns the normalized unit vector form of this vector.

If this vector is null, then a null vector is returned. If the length of the vector is very close to 1, then the vector will be returned as-is. Otherwise the normalized form of the vector of length 1 will be returned.

See also

PySide.QtGui.QVector2D.length() PySide.QtGui.QVector2D.normalize()

PySide.QtGui.QVector2D.__ne__(v2)

Parameters:v2 – PySide.QtGui.QVector2D Return type:PySide.QtCore.bool

PySide.QtGui.QVector2D.__mul__(factor)

Parameters:factor – PySide.QtCore.qreal Return type:PySide.QtGui.QVector2D

PySide.QtGui.QVector2D.__mul__(factor)

Parameters:factor – PySide.QtCore.qreal Return type:PySide.QtGui.QVector2D

PySide.QtGui.QVector2D.__mul__(v2)

Parameters:v2 – PySide.QtGui.QVector2D Return type:PySide.QtGui.QVector2D

PySide.QtGui.QVector2D.__imul__(vector)

Parameters:vector – PySide.QtGui.QVector2D Return type:PySide.QtGui.QVector2D

Multiplies the components of this vector by the corresponding components in vector .

PySide.QtGui.QVector2D.__imul__(factor)

Parameters:factor – PySide.QtCore.qreal Return type:PySide.QtGui.QVector2D

Multiplies this vector’s coordinates by the given factor , and returns a reference to this vector.

See also

PySide.QtGui.QVector2D.operator/=()

PySide.QtGui.QVector2D.__add__(v2)

Parameters:v2 – PySide.QtGui.QVector2D Return type:PySide.QtGui.QVector2D

PySide.QtGui.QVector2D.__iadd__(vector)

Parameters:vector – PySide.QtGui.QVector2D Return type:PySide.QtGui.QVector2D

Adds the given vector to this vector and returns a reference to this vector.

See also

PySide.QtGui.QVector2D.operator-=()

PySide.QtGui.QVector2D.__sub__(v2)

Parameters:v2 – PySide.QtGui.QVector2D Return type:PySide.QtGui.QVector2D

PySide.QtGui.QVector2D.__sub__()

Return type:PySide.QtGui.QVector2D

PySide.QtGui.QVector2D.__isub__(vector)

Parameters:vector – PySide.QtGui.QVector2D Return type:PySide.QtGui.QVector2D

Subtracts the given vector from this vector and returns a reference to this vector.

See also

PySide.QtGui.QVector2D.operator+=()

PySide.QtGui.QVector2D.__div__(divisor)

Parameters:divisor – PySide.QtCore.qreal Return type:PySide.QtGui.QVector2D

PySide.QtGui.QVector2D.__idiv__(divisor)

Parameters:divisor – PySide.QtCore.qreal Return type:PySide.QtGui.QVector2D

Divides this vector’s coordinates by the given divisor , and returns a reference to this vector.

See also

PySide.QtGui.QVector2D.operator*=()

PySide.QtGui.QVector2D.__eq__(v2)

Parameters:v2 – PySide.QtGui.QVector2D Return type:PySide.QtCore.bool

PySide.QtGui.QVector2D.setX(x)

Parameters:x – PySide.QtCore.qreal

Sets the x coordinate of this point to the given x coordinate.

See also

PySide.QtGui.QVector2D.x() PySide.QtGui.QVector2D.setY()

PySide.QtGui.QVector2D.setY(y)

Parameters:y – PySide.QtCore.qreal

Sets the y coordinate of this point to the given y coordinate.

See also

PySide.QtGui.QVector2D.y() PySide.QtGui.QVector2D.setX()

PySide.QtGui.QVector2D.toPoint()

Return type:PySide.QtCore.QPoint

Returns the PySide.QtCore.QPoint form of this 2D vector.

See also

PySide.QtGui.QVector2D.toPointF() PySide.QtGui.QVector2D.toVector3D()

PySide.QtGui.QVector2D.toPointF()

Return type:PySide.QtCore.QPointF

Returns the PySide.QtCore.QPointF form of this 2D vector.

See also

PySide.QtGui.QVector2D.toPoint() PySide.QtGui.QVector2D.toVector3D()

PySide.QtGui.QVector2D.toTuple()

Return type:PyObject

PySide.QtGui.QVector2D.toVector3D()

Return type:PySide.QtGui.QVector3D

Returns the 3D form of this 2D vector, with the z coordinate set to zero.

See also

PySide.QtGui.QVector2D.toVector4D() PySide.QtGui.QVector2D.toPoint()

PySide.QtGui.QVector2D.toVector4D()

Return type:PySide.QtGui.QVector4D

Returns the 4D form of this 2D vector, with the z and w coordinates set to zero.

See also

PySide.QtGui.QVector2D.toVector3D() PySide.QtGui.QVector2D.toPoint()

PySide.QtGui.QVector2D.x()

Return type:PySide.QtCore.qreal

Returns the x coordinate of this point.

See also

PySide.QtGui.QVector2D.setX() PySide.QtGui.QVector2D.y()

PySide.QtGui.QVector2D.y()

Return type:PySide.QtCore.qreal

Returns the y coordinate of this point.

See also

PySide.QtGui.QVector2D.setY() PySide.QtGui.QVector2D.x()