QVector4D¶

The QVector4D class represents a vector or vertex in 4D space. More…

New in version 4.6.

Synopsis¶

Functions¶

def __add__ (, v2)
def __div__ (, divisor)
def __div__ (, divisor)
def __eq__ (, v2)
def __iadd__ (vector)
def __idiv__ (divisor)
def __idiv__ (vector)
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 operator[] (i)
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 QVector4D class can also be used to represent vertices in 4D space. We therefore do not need to provide a separate vertex class.

See also

QQuaternion QVector2D QVector3D

class QVector4D¶

QVector4D(point)

QVector4D(point)

QVector4D(vector)

QVector4D(vector, zpos, wpos)

QVector4D(vector)

QVector4D(vector, wpos)

QVector4D(xpos, ypos, zpos, wpos)

param ypos

float

param point

QPoint

param wpos

float

param zpos

float

param vector

QVector2D

param xpos

float

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

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

See also

toVector2D()

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

See also

toVector3D()

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

PySide2.QtGui.QVector4D.__reduce__()¶

Return type: PyObject

PySide2.QtGui.QVector4D.__repr__()¶

Return type: PyObject

static PySide2.QtGui.QVector4D.dotProduct(v1, v2)¶

Parameters

v1 – QVector4D
v2 – QVector4D

Return type

float

Returns the dot product of v1 and v2 .

PySide2.QtGui.QVector4D.isNull()¶

Return type: bool

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

PySide2.QtGui.QVector4D.length()¶

Return type: float

Returns the length of the vector from the origin.

See also

lengthSquared() normalized()

PySide2.QtGui.QVector4D.lengthSquared()¶

Return type: float

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

See also

length() dotProduct()

PySide2.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

length() normalized()

PySide2.QtGui.QVector4D.normalized()¶

Return type: 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

length() normalize()

PySide2.QtGui.QVector4D.__ne__(v2)¶

Parameters: v2 – QVector4D
Return type: bool

PySide2.QtGui.QVector4D.__mul__(matrix)¶

Parameters: matrix – QMatrix4x4
Return type: QVector4D

PySide2.QtGui.QVector4D.__mul__(matrix)

Parameters: matrix – QMatrix4x4
Return type: QVector4D

PySide2.QtGui.QVector4D.__mul__(v2)

Parameters: v2 – QVector4D
Return type: QVector4D

PySide2.QtGui.QVector4D.__mul__(factor)

Parameters: factor – float
Return type: QVector4D

PySide2.QtGui.QVector4D.__mul__(factor)

Parameters: factor – float
Return type: QVector4D

PySide2.QtGui.QVector4D.__imul__(vector)¶

Parameters: vector – QVector4D
Return type: QVector4D

PySide2.QtGui.QVector4D.__imul__(factor)

Parameters: factor – float
Return type: QVector4D

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

See also

operator/=()

PySide2.QtGui.QVector4D.__add__(v2)¶

Parameters: v2 – QVector4D
Return type: QVector4D

PySide2.QtGui.QVector4D.__iadd__(vector)¶

Parameters: vector – QVector4D
Return type: QVector4D

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

See also

operator-=()

PySide2.QtGui.QVector4D.__sub__(v2)¶

Parameters: v2 – QVector4D
Return type: QVector4D

This is an overloaded function.

Returns a QVector4D object that is formed by changing the sign of all three components of the given vector .

Equivalent to QVector4D(0,0,0,0) - vector .

PySide2.QtGui.QVector4D.__sub__()

Return type: QVector4D

PySide2.QtGui.QVector4D.__isub__(vector)¶

Parameters: vector – QVector4D
Return type: QVector4D

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

See also

operator+=()

PySide2.QtGui.QVector4D.__div__(divisor)¶

Parameters: divisor – QVector4D
Return type: QVector4D

PySide2.QtGui.QVector4D.__div__(divisor)

Parameters: divisor – float
Return type: QVector4D

PySide2.QtGui.QVector4D.__idiv__(vector)¶

Parameters: vector – QVector4D
Return type: QVector4D

PySide2.QtGui.QVector4D.__idiv__(divisor)

Parameters: divisor – float
Return type: QVector4D

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

See also

operator*=()

PySide2.QtGui.QVector4D.__eq__(v2)¶

Parameters: v2 – QVector4D
Return type: bool

PySide2.QtGui.QVector4D.operator[](i)

Parameters: i – int
Return type: float

Returns the component of the vector at index position i .

i must be a valid index position in the vector (i.e., 0 <= i < 4).

PySide2.QtGui.QVector4D.setW(w)¶

Parameters: w – float

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

See also

w() setX() setY() setZ()

PySide2.QtGui.QVector4D.setX(x)¶

Parameters: x – float

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

See also

x() setY() setZ() setW()

PySide2.QtGui.QVector4D.setY(y)¶

Parameters: y – float

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

See also

y() setX() setZ() setW()

PySide2.QtGui.QVector4D.setZ(z)¶

Parameters: z – float

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

See also

z() setX() setY() setW()

PySide2.QtGui.QVector4D.toPoint()¶

Return type: QPoint

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

See also

toPointF() toVector2D()

PySide2.QtGui.QVector4D.toPointF()¶

Return type: QPointF

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

See also

toPoint() toVector2D()

PySide2.QtGui.QVector4D.toTuple()¶

Return type: PyObject

PySide2.QtGui.QVector4D.toVector2D()¶

Return type: QVector2D

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

PySide2.QtGui.QVector4D.toVector2DAffine()¶

Return type: 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.

PySide2.QtGui.QVector4D.toVector3D()¶

Return type: QVector3D

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

PySide2.QtGui.QVector4D.toVector3DAffine()¶

Return type: 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.

PySide2.QtGui.QVector4D.w()¶

Return type: float

Returns the w coordinate of this point.

See also

setW() x() y() z()

PySide2.QtGui.QVector4D.x()¶

Return type: float

Returns the x coordinate of this point.

See also

setX() y() z() w()

PySide2.QtGui.QVector4D.y()¶

Return type: float

Returns the y coordinate of this point.

See also

setY() x() z() w()

PySide2.QtGui.QVector4D.z()¶

Return type: float

Returns the z coordinate of this point.

See also

setZ() x() y() w()

Qt Documentation

Table of Contents

QVector4D¶

Synopsis¶

Functions¶

Static functions¶

Detailed Description¶