QVector4D

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__ (, matrix)
• def __mul__ (, v2)
• def __mul__ (factor)
• def __mul__ (matrix)
• def __ne__ (, v2)
• def __reduce__ ()
• def __repr__ ()
• def __sub__ ()
• def __sub__ (, v2)
• def isNull ()
• def length ()
• def lengthSquared ()
• def normalize ()
• def normalized ()
• def setW (w)
• def setX (x)
• def setY (y)
• def setZ (z)
• def toPoint ()
• def toPointF ()
• def toTuple ()
• def toVector2D ()
• def toVector2DAffine ()
• def toVector3D ()
• def toVector3DAffine ()
• def w ()
• def x ()
• def y ()
• def z ()

Static functions

• def dotProduct (v1, v2)

Detailed Description

The PySide.QtGui.QVector4D class represents a vector or vertex in 4D space.

The PySide.QtGui.QVector4D class can also be used to represent vertices in 4D space. We therefore do not need to provide a separate vertex class.

Note

By design values in the PySide.QtGui.QVector4D instance are stored as float . This means that on platforms where the qreal arguments to PySide.QtGui.QVector4D functions are represented by double values, it is possible to lose precision.

See also

PySide.QtGui.QQuaternion PySide.QtGui.QVector2D PySide.QtGui.QVector3D

class PySide.QtGui.QVector4D

class PySide.QtGui.QVector4D(point)

class PySide.QtGui.QVector4D(point)

class PySide.QtGui.QVector4D(vector)

class PySide.QtGui.QVector4D(vector, zpos, wpos)

class PySide.QtGui.QVector4D(vector)

class PySide.QtGui.QVector4D(vector, wpos)

class PySide.QtGui.QVector4D(QVector4D)

class PySide.QtGui.QVector4D(xpos, ypos, zpos, wpos)

Parameters:

• vector – PySide.QtGui.QVector2D
• point – PySide.QtCore.QPoint
• zpos – PySide.QtCore.qreal
• QVector4D – PySide.QtGui.QVector4D
• ypos – PySide.QtCore.qreal
• xpos – PySide.QtCore.qreal
• wpos – PySide.QtCore.qreal

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

Constructs a vector with x and y coordinates from a 2D point , and z and w coordinates of 0.

Constructs a vector with x and y coordinates from a 2D point , and z and w coordinates of 0.

Constructs a 4D vector from the specified 2D vector . The z and w coordinates are set to zero.

See also

PySide.QtGui.QVector4D.toVector2D()

Constructs a 4D vector from the specified 2D vector . The z and w coordinates are set to zpos and wpos respectively.

See also

PySide.QtGui.QVector4D.toVector2D()

Constructs a 4D vector from the specified 3D vector . The w coordinate is set to zero.

See also

PySide.QtGui.QVector4D.toVector3D()

Constructs a 4D vector from the specified 3D vector . The w coordinate is set to wpos .

See also

PySide.QtGui.QVector4D.toVector3D()

Constructs a vector with coordinates (xpos , ypos , zpos , wpos ).

PySide.QtGui.QVector4D.__reduce__()

Return type:PyObject

PySide.QtGui.QVector4D.__repr__()

Return type:PyObject

static PySide.QtGui.QVector4D.dotProduct(v1, v2)

Parameters:

• v1 – PySide.QtGui.QVector4D
• v2 – PySide.QtGui.QVector4D

Return type:

PySide.QtCore.qreal

Returns the dot product of v1 and v2 .

PySide.QtGui.QVector4D.isNull()

Return type:PySide.QtCore.bool

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

PySide.QtGui.QVector4D.length()

Return type:PySide.QtCore.qreal

Returns the length of the vector from the origin.

See also

PySide.QtGui.QVector4D.lengthSquared() PySide.QtGui.QVector4D.normalized()

PySide.QtGui.QVector4D.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.QVector4D.length() PySide.QtGui.QVector4D.dotProduct()

PySide.QtGui.QVector4D.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.QVector4D.length() PySide.QtGui.QVector4D.normalized()

PySide.QtGui.QVector4D.normalized()

Return type:PySide.QtGui.QVector4D

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.QVector4D.length() PySide.QtGui.QVector4D.normalize()

PySide.QtGui.QVector4D.__ne__(v2)

Parameters:v2 – PySide.QtGui.QVector4D Return type:PySide.QtCore.bool

PySide.QtGui.QVector4D.__mul__(factor)

Parameters:factor – PySide.QtCore.qreal Return type:PySide.QtGui.QVector4D

PySide.QtGui.QVector4D.__mul__(factor)

Parameters:factor – PySide.QtCore.qreal Return type:PySide.QtGui.QVector4D

PySide.QtGui.QVector4D.__mul__(matrix)

Parameters:matrix – PySide.QtGui.QMatrix4x4 Return type:PySide.QtGui.QVector4D

PySide.QtGui.QVector4D.__mul__(matrix)

Parameters:matrix – PySide.QtGui.QMatrix4x4 Return type:PySide.QtGui.QVector4D

PySide.QtGui.QVector4D.__mul__(v2)

Parameters:v2 – PySide.QtGui.QVector4D Return type:PySide.QtGui.QVector4D

PySide.QtGui.QVector4D.__imul__(factor)

Parameters:factor – PySide.QtCore.qreal Return type:PySide.QtGui.QVector4D

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

See also

PySide.QtGui.QVector4D.operator/=()

PySide.QtGui.QVector4D.__imul__(vector)

Parameters:vector – PySide.QtGui.QVector4D Return type:PySide.QtGui.QVector4D

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

PySide.QtGui.QVector4D.__add__(v2)

Parameters:v2 – PySide.QtGui.QVector4D Return type:PySide.QtGui.QVector4D

PySide.QtGui.QVector4D.__iadd__(vector)

Parameters:vector – PySide.QtGui.QVector4D Return type:PySide.QtGui.QVector4D

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

See also

PySide.QtGui.QVector4D.operator-=()

PySide.QtGui.QVector4D.__sub__(v2)

Parameters:v2 – PySide.QtGui.QVector4D Return type:PySide.QtGui.QVector4D

PySide.QtGui.QVector4D.__sub__()

Return type:PySide.QtGui.QVector4D

PySide.QtGui.QVector4D.__isub__(vector)

Parameters:vector – PySide.QtGui.QVector4D Return type:PySide.QtGui.QVector4D

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

See also

PySide.QtGui.QVector4D.operator+=()

PySide.QtGui.QVector4D.__div__(divisor)

Parameters:divisor – PySide.QtCore.qreal Return type:PySide.QtGui.QVector4D

PySide.QtGui.QVector4D.__idiv__(divisor)

Parameters:divisor – PySide.QtCore.qreal Return type:PySide.QtGui.QVector4D

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

See also

PySide.QtGui.QVector4D.operator*=()

PySide.QtGui.QVector4D.__eq__(v2)

Parameters:v2 – PySide.QtGui.QVector4D Return type:PySide.QtCore.bool

PySide.QtGui.QVector4D.setW(w)

Parameters:w – PySide.QtCore.qreal

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

See also

PySide.QtGui.QVector4D.w() PySide.QtGui.QVector4D.setX() PySide.QtGui.QVector4D.setY() PySide.QtGui.QVector4D.setZ()

PySide.QtGui.QVector4D.setX(x)

Parameters:x – PySide.QtCore.qreal

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

See also

PySide.QtGui.QVector4D.x() PySide.QtGui.QVector4D.setY() PySide.QtGui.QVector4D.setZ() PySide.QtGui.QVector4D.setW()

PySide.QtGui.QVector4D.setY(y)

Parameters:y – PySide.QtCore.qreal

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

See also

PySide.QtGui.QVector4D.y() PySide.QtGui.QVector4D.setX() PySide.QtGui.QVector4D.setZ() PySide.QtGui.QVector4D.setW()

PySide.QtGui.QVector4D.setZ(z)

Parameters:z – PySide.QtCore.qreal

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

See also

PySide.QtGui.QVector4D.z() PySide.QtGui.QVector4D.setX() PySide.QtGui.QVector4D.setY() PySide.QtGui.QVector4D.setW()

PySide.QtGui.QVector4D.toPoint()

Return type:PySide.QtCore.QPoint

Returns the PySide.QtCore.QPoint form of this 4D vector. The z and w coordinates are dropped.

See also

PySide.QtGui.QVector4D.toPointF() PySide.QtGui.QVector4D.toVector2D()

PySide.QtGui.QVector4D.toPointF()

Return type:PySide.QtCore.QPointF

Returns the PySide.QtCore.QPointF form of this 4D vector. The z and w coordinates are dropped.

See also

PySide.QtGui.QVector4D.toPoint() PySide.QtGui.QVector4D.toVector2D()

PySide.QtGui.QVector4D.toTuple()

Return type:PyObject

PySide.QtGui.QVector4D.toVector2D()

Return type:PySide.QtGui.QVector2D

Returns the 2D vector form of this 4D vector, dropping the z and w coordinates.

See also

PySide.QtGui.QVector4D.toVector2DAffine() PySide.QtGui.QVector4D.toVector3D() PySide.QtGui.QVector4D.toPoint()

PySide.QtGui.QVector4D.toVector2DAffine()

Return type:PySide.QtGui.QVector2D

Returns the 2D vector form of this 4D vector, dividing the x and y coordinates by the w coordinate and dropping the z coordinate. Returns a null vector if w is zero.

See also

PySide.QtGui.QVector4D.toVector2D() PySide.QtGui.QVector4D.toVector3DAffine() PySide.QtGui.QVector4D.toPoint()

PySide.QtGui.QVector4D.toVector3D()

Return type:PySide.QtGui.QVector3D

Returns the 3D vector form of this 4D vector, dropping the w coordinate.

See also

PySide.QtGui.QVector4D.toVector3DAffine() PySide.QtGui.QVector4D.toVector2D() PySide.QtGui.QVector4D.toPoint()

PySide.QtGui.QVector4D.toVector3DAffine()

Return type:PySide.QtGui.QVector3D

Returns the 3D vector form of this 4D vector, dividing the x, y, and z coordinates by the w coordinate. Returns a null vector if w is zero.

See also

PySide.QtGui.QVector4D.toVector3D() PySide.QtGui.QVector4D.toVector2DAffine() PySide.QtGui.QVector4D.toPoint()

PySide.QtGui.QVector4D.w()

Return type:PySide.QtCore.qreal

Returns the w coordinate of this point.

See also

PySide.QtGui.QVector4D.setW() PySide.QtGui.QVector4D.x() PySide.QtGui.QVector4D.y() PySide.QtGui.QVector4D.z()

PySide.QtGui.QVector4D.x()

Return type:PySide.QtCore.qreal

Returns the x coordinate of this point.

See also

PySide.QtGui.QVector4D.setX() PySide.QtGui.QVector4D.y() PySide.QtGui.QVector4D.z() PySide.QtGui.QVector4D.w()

PySide.QtGui.QVector4D.y()

Return type:PySide.QtCore.qreal

Returns the y coordinate of this point.

See also

PySide.QtGui.QVector4D.setY() PySide.QtGui.QVector4D.x() PySide.QtGui.QVector4D.z() PySide.QtGui.QVector4D.w()

PySide.QtGui.QVector4D.z()

Return type:PySide.QtCore.qreal

Returns the z coordinate of this point.

See also

PySide.QtGui.QVector4D.setZ() PySide.QtGui.QVector4D.x() PySide.QtGui.QVector4D.y() PySide.QtGui.QVector4D.w()