PySide 模块

PySide.QtGui

QVector2D ¶

注意

该类在 Qt4.6 引入

概要 ¶

函数 ¶

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 ()

静态函数 ¶

def dotProduct (v1, v2)

详细描述 ¶

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

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.

注意

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.

另请参阅

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

class PySide.QtGui. QVector2D ¶

class PySide.QtGui. QVector2D ( point )

class PySide.QtGui. QVector2D ( QVector2D )

class PySide.QtGui. QVector2D ( vector )

class PySide.QtGui. QVector2D ( xpos , ypos )

参数：	vector – `PySide.QtGui.QVector3D` point – `PySide.QtCore.QPoint` ypos – `PySide.QtCore.qreal` xpos – `PySide.QtCore.qreal` QVector2D – `PySide.QtGui.QVector2D`

构造 null 向量，即：采用坐标 (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 3D vector . The z coordinate of vector is dropped.

另请参阅

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.

另请参阅

PySide.QtGui.QVector2D.toVector4D()

构造向量采用坐标 ( xpos , ypos ).

PySide.QtGui.QVector2D. __reduce__ ( ) ¶

返回类型：	`PyObject`

PySide.QtGui.QVector2D. __repr__ ( ) ¶

返回类型：	`PyObject`

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

参数：	v1 – `PySide.QtGui.QVector2D` v2 – `PySide.QtGui.QVector2D`
返回类型：	`PySide.QtCore.qreal`

Returns the dot product of v1 and v2 .

PySide.QtGui.QVector2D. isNull ( ) ¶

返回类型：	`PySide.QtCore.bool`

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

PySide.QtGui.QVector2D. length ( ) ¶

返回类型：	`PySide.QtCore.qreal`

从原点返回向量长度。

另请参阅

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

PySide.QtGui.QVector2D. lengthSquared ( ) ¶

返回类型：	`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.

另请参阅

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.

另请参阅

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

PySide.QtGui.QVector2D. normalized ( ) ¶

返回类型：	`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.

另请参阅

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

PySide.QtGui.QVector2D. __ne__ ( v2 ) ¶

参数：	v2 – `PySide.QtGui.QVector2D`
返回类型：	`PySide.QtCore.bool`

PySide.QtGui.QVector2D. __mul__ ( factor ) ¶

参数：	factor – `PySide.QtCore.qreal`
返回类型：	`PySide.QtGui.QVector2D`

PySide.QtGui.QVector2D. __mul__ ( factor )

参数：	factor – `PySide.QtCore.qreal`
返回类型：	`PySide.QtGui.QVector2D`

PySide.QtGui.QVector2D. __mul__ ( v2 )

参数：	v2 – `PySide.QtGui.QVector2D`
返回类型：	`PySide.QtGui.QVector2D`

PySide.QtGui.QVector2D. __imul__ ( vector ) ¶

参数：	vector – `PySide.QtGui.QVector2D`
返回类型：	`PySide.QtGui.QVector2D`

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

PySide.QtGui.QVector2D. __imul__ ( factor )

参数：	factor – `PySide.QtCore.qreal`
返回类型：	`PySide.QtGui.QVector2D`

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

另请参阅

PySide.QtGui.QVector2D.operator/=()

PySide.QtGui.QVector2D. __add__ ( v2 ) ¶

参数：	v2 – `PySide.QtGui.QVector2D`
返回类型：	`PySide.QtGui.QVector2D`

PySide.QtGui.QVector2D. __iadd__ ( vector ) ¶

参数：	vector – `PySide.QtGui.QVector2D`
返回类型：	`PySide.QtGui.QVector2D`

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

另请参阅

PySide.QtGui.QVector2D.operator-=()

PySide.QtGui.QVector2D. __sub__ ( v2 ) ¶

参数：	v2 – `PySide.QtGui.QVector2D`
返回类型：	`PySide.QtGui.QVector2D`

PySide.QtGui.QVector2D. __sub__ ( )

返回类型：	`PySide.QtGui.QVector2D`

PySide.QtGui.QVector2D. __isub__ ( vector ) ¶

参数：	vector – `PySide.QtGui.QVector2D`
返回类型：	`PySide.QtGui.QVector2D`

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

另请参阅

PySide.QtGui.QVector2D.operator+=()

PySide.QtGui.QVector2D. __div__ ( divisor ) ¶

参数：	divisor – `PySide.QtCore.qreal`
返回类型：	`PySide.QtGui.QVector2D`

PySide.QtGui.QVector2D. __idiv__ ( divisor ) ¶

参数：	divisor – `PySide.QtCore.qreal`
返回类型：	`PySide.QtGui.QVector2D`

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

另请参阅

PySide.QtGui.QVector2D.operator*=()

PySide.QtGui.QVector2D. __eq__ ( v2 ) ¶

参数：	v2 – `PySide.QtGui.QVector2D`
返回类型：	`PySide.QtCore.bool`

PySide.QtGui.QVector2D. setX ( x ) ¶

参数：	x – `PySide.QtCore.qreal`

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

另请参阅

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

PySide.QtGui.QVector2D. setY ( y ) ¶

参数：	y – `PySide.QtCore.qreal`

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

另请参阅

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

PySide.QtGui.QVector2D. toPoint ( ) ¶

返回类型：	`PySide.QtCore.QPoint`

返回 PySide.QtCore.QPoint form of this 2D vector.

另请参阅

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

PySide.QtGui.QVector2D. toPointF ( ) ¶

返回类型：	`PySide.QtCore.QPointF`

返回 PySide.QtCore.QPointF form of this 2D vector.

另请参阅

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

PySide.QtGui.QVector2D. toTuple ( ) ¶

返回类型：	`PyObject`

PySide.QtGui.QVector2D. toVector3D ( ) ¶

返回类型：	`PySide.QtGui.QVector3D`

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

另请参阅

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

PySide.QtGui.QVector2D. toVector4D ( ) ¶

返回类型：	`PySide.QtGui.QVector4D`

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

另请参阅

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

PySide.QtGui.QVector2D. x ( ) ¶

返回类型：	`PySide.QtCore.qreal`

返回此点的 x 坐标。

另请参阅

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

PySide.QtGui.QVector2D. y ( ) ¶

返回类型：	`PySide.QtCore.qreal`

返回此点的 y 坐标。

另请参阅

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

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QVector2D ¶

概要 ¶

函数 ¶

静态函数 ¶

详细描述 ¶