QVector4D ¶

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

4.6 版新增。

概要 ¶

函数 ¶

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 ()

静态函数 ¶

def dotProduct (v1, v2)

详细描述 ¶

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

另请参阅

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).

构造 4D 向量从指定 2D vector . The z and w coordinates are set to zpos and wpos 分别。

另请参阅

toVector2D()

构造 4D 向量从指定 3D vector . The w coordinate is set to wpos .

另请参阅

toVector3D()

构造向量采用坐标 ( xpos , ypos , zpos , wpos ).

PySide2.QtGui.QVector4D. __reduce__ ( ) ¶

返回类型: PyObject

PySide2.QtGui.QVector4D. __repr__ ( ) ¶

返回类型: PyObject

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

参数

v1 – QVector4D
v2 – QVector4D

返回类型

float

Returns the dot product of v1 and v2 .

PySide2.QtGui.QVector4D. isNull ( ) ¶

返回类型: bool

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

PySide2.QtGui.QVector4D. length ( ) ¶

返回类型: float

从原点返回向量长度。

另请参阅

lengthSquared() normalized()

PySide2.QtGui.QVector4D. lengthSquared ( ) ¶

返回类型: float

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

另请参阅

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.

另请参阅

length() normalized()

PySide2.QtGui.QVector4D. normalized ( ) ¶

返回类型: 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.

另请参阅

length() normalize()

PySide2.QtGui.QVector4D. __ne__ ( v2 ) ¶

参数: v2 – QVector4D
返回类型: bool

PySide2.QtGui.QVector4D. __mul__ ( matrix ) ¶

参数: matrix – QMatrix4x4
返回类型: QVector4D

PySide2.QtGui.QVector4D. __mul__ ( matrix ) ¶

参数: matrix – QMatrix4x4
返回类型: QVector4D

PySide2.QtGui.QVector4D. __mul__ ( v2 ) ¶

参数: v2 – QVector4D
返回类型: QVector4D

PySide2.QtGui.QVector4D. __mul__ ( factor ) ¶

参数: factor – float
返回类型: QVector4D

PySide2.QtGui.QVector4D. __mul__ ( factor ) ¶

参数: factor – float
返回类型: QVector4D

PySide2.QtGui.QVector4D. __imul__ ( vector ) ¶

参数: vector – QVector4D
返回类型: QVector4D

PySide2.QtGui.QVector4D. __imul__ ( factor ) ¶

参数: factor – float
返回类型: QVector4D

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

另请参阅

operator/=()

PySide2.QtGui.QVector4D. __add__ ( v2 ) ¶

参数: v2 – QVector4D
返回类型: QVector4D

PySide2.QtGui.QVector4D. __iadd__ ( vector ) ¶

参数: vector – QVector4D
返回类型: QVector4D

添加给定 vector to this vector and returns a reference to this vector.

另请参阅

operator-=()

PySide2.QtGui.QVector4D. __sub__ ( v2 ) ¶

参数: v2 – QVector4D
返回类型: QVector4D

PySide2.QtGui.QVector4D. __sub__ ( ) ¶

返回类型: QVector4D

PySide2.QtGui.QVector4D. __isub__ ( vector ) ¶

参数: vector – QVector4D
返回类型: QVector4D

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

另请参阅

operator+=()

PySide2.QtGui.QVector4D. __div__ ( divisor ) ¶

参数: divisor – QVector4D
返回类型: QVector4D

PySide2.QtGui.QVector4D. __div__ ( divisor ) ¶

参数: divisor – float
返回类型: QVector4D

PySide2.QtGui.QVector4D. __idiv__ ( vector ) ¶

参数: vector – QVector4D
返回类型: QVector4D

PySide2.QtGui.QVector4D. __idiv__ ( divisor ) ¶

参数: divisor – float
返回类型: QVector4D

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

另请参阅

operator*=()

PySide2.QtGui.QVector4D. __eq__ ( v2 ) ¶

参数: v2 – QVector4D
返回类型: bool

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

参数: i – int
返回类型: 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 ) ¶

参数: w – float

Sets the w coordinate of this point to the given w 坐标。

另请参阅

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

PySide2.QtGui.QVector4D. setX ( x ) ¶

参数: x – float

Sets the x coordinate of this point to the given x 坐标。

另请参阅

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

PySide2.QtGui.QVector4D. setY ( y ) ¶

参数: y – float

Sets the y coordinate of this point to the given y 坐标。

另请参阅

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

PySide2.QtGui.QVector4D. setZ ( z ) ¶

参数: z – float

Sets the z coordinate of this point to the given z 坐标。

另请参阅

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

PySide2.QtGui.QVector4D. toPoint ( ) ¶

返回类型: QPoint

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

另请参阅

toPointF() toVector2D()

PySide2.QtGui.QVector4D. toPointF ( ) ¶

返回类型: QPointF

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

另请参阅

toPoint() toVector2D()

PySide2.QtGui.QVector4D. toTuple ( ) ¶

返回类型: PyObject

PySide2.QtGui.QVector4D. toVector2D ( ) ¶

返回类型: QVector2D

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

另请参阅

toVector2DAffine() toVector3D() toPoint()

PySide2.QtGui.QVector4D. toVector2DAffine ( ) ¶

返回类型: 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.

另请参阅

toVector2D() toVector3DAffine() toPoint()

PySide2.QtGui.QVector4D. toVector3D ( ) ¶

返回类型: QVector3D

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

另请参阅

toVector3DAffine() toVector2D() toPoint()

PySide2.QtGui.QVector4D. toVector3DAffine ( ) ¶

返回类型: 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.

另请参阅

toVector3D() toVector2DAffine() toPoint()

PySide2.QtGui.QVector4D. w ( ) ¶

返回类型: float

返回此点的 w 坐标。

另请参阅

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

PySide2.QtGui.QVector4D. x ( ) ¶

返回类型: float

返回此点的 x 坐标。

另请参阅

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

PySide2.QtGui.QVector4D. y ( ) ¶

返回类型: float

返回此点的 y 坐标。

另请参阅

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

PySide2.QtGui.QVector4D. z ( ) ¶

返回类型: float

返回此点的 z 坐标。

另请参阅

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

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QVector4D ¶

概要 ¶

函数 ¶

静态函数 ¶

详细描述 ¶