QPoint

Synopsis

Functions

• def __add__ (, p2)
• def __div__ (, c)
• def __eq__ (, p2)
• def __iadd__ (p)
• def __idiv__ (c)
• def __imul__ (c)
• def __isub__ (p)
• def __mul__ (, c)
• def __mul__ (, m)
• def __mul__ (, m)
• def __mul__ (, matrix)
• def __mul__ (c)
• def __mul__ (matrix)
• def __ne__ (, p2)
• def __reduce__ ()
• def __repr__ ()
• def __sub__ ()
• def __sub__ (, p2)
• def isNull ()
• def manhattanLength ()
• def setX (x)
• def setY (y)
• def toTuple ()
• def x ()
• def y ()

Detailed Description

The PySide.QtCore.QPoint class defines a point in the plane using integer precision.

A point is specified by a x coordinate and an y coordinate which can be accessed using the PySide.QtCore.QPoint.x() and PySide.QtCore.QPoint.y() functions. The PySide.QtCore.QPoint.isNull() function returns true if both x and y are set to 0. The coordinates can be set (or altered) using the PySide.QtCore.QPoint.setX() and PySide.QtCore.QPoint.setY() functions, or alternatively the PySide.QtCore.QPoint.rx() and PySide.QtCore.QPoint.ry() functions which return references to the coordinates (allowing direct manipulation).

Given a point p , the following statements are all equivalent:

p = QPoint()

p.setX(p.x() + 1)
p += QPoint(1, 0)

A PySide.QtCore.QPoint object can also be used as a vector: Addition and subtraction are defined as for vectors (each component is added separately). A PySide.QtCore.QPoint object can also be divided or multiplied by an int or a qreal .

In addition, the PySide.QtCore.QPoint class provides the PySide.QtCore.QPoint.manhattanLength() function which gives an inexpensive approximation of the length of the PySide.QtCore.QPoint object interpreted as a vector. Finally, PySide.QtCore.QPoint objects can be streamed as well as compared.

See also

PySide.QtCore.QPointF PySide.QtGui.QPolygon

class PySide.QtCore.QPoint

class PySide.QtCore.QPoint(QPoint)

class PySide.QtCore.QPoint(xpos, ypos)

Parameters:

• ypos – PySide.QtCore.int
• xpos – PySide.QtCore.int
• QPoint – PySide.QtCore.QPoint

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

See also

PySide.QtCore.QPoint.isNull()

Constructs a point with the given coordinates (x , y ).

See also

PySide.QtCore.QPoint.setX() PySide.QtCore.QPoint.setY()

PySide.QtCore.QPoint.__reduce__()

Return type:PyObject

PySide.QtCore.QPoint.__repr__()

Return type:PyObject

PySide.QtCore.QPoint.isNull()

Return type:PySide.QtCore.bool

Returns true if both the x and y coordinates are set to 0, otherwise returns false.

PySide.QtCore.QPoint.manhattanLength()

Return type:PySide.QtCore.int

Returns the sum of the absolute values of PySide.QtCore.QPoint.x() and PySide.QtCore.QPoint.y() , traditionally known as the “Manhattan length” of the vector from the origin to the point. For example:

class MyWidget(QWidget):

    self.oldPosition = QPointer()

    # event : QMouseEvent
    def mouseMoveEvent(QMouseEvent event):
        point = event.pos() - self.oldPosition
        if (point.manhattanLength() > 3):
            # the mouse has moved more than 3 pixels since the oldPosition
            pass

This is a useful, and quick to calculate, approximation to the true length:

trueLength = sqrt(pow(x(), 2) + pow(y(), 2))

The tradition of “Manhattan length” arises because such distances apply to travelers who can only travel on a rectangular grid, like the streets of Manhattan.

PySide.QtCore.QPoint.__ne__(p2)

Parameters:p2 – PySide.QtCore.QPoint Return type:PySide.QtCore.bool

PySide.QtCore.QPoint.__mul__(c)

Parameters:c – PySide.QtCore.qreal Return type:PySide.QtCore.QPoint

PySide.QtCore.QPoint.__mul__(c)

Parameters:c – PySide.QtCore.qreal Return type:PySide.QtCore.QPoint

PySide.QtCore.QPoint.__mul__(m)

Parameters:m – PySide.QtGui.QTransform Return type:PySide.QtCore.QPoint

PySide.QtCore.QPoint.__mul__(matrix)

Parameters:matrix – PySide.QtGui.QMatrix4x4 Return type:PySide.QtCore.QPoint

PySide.QtCore.QPoint.__mul__(m)

Parameters:m – PySide.QtGui.QMatrix Return type:PySide.QtCore.QPoint

PySide.QtCore.QPoint.__mul__(matrix)

Parameters:matrix – PySide.QtGui.QMatrix4x4 Return type:PySide.QtCore.QPoint

PySide.QtCore.QPoint.__imul__(c)

Parameters:c – PySide.QtCore.qreal Return type:PySide.QtCore.QPoint

Multiplies this point’s coordinates by the given factor , and returns a reference to this point. For example:

p = QPoint(-1, 4)
p *= 2.5  # p becomes (-3, 10)

Note that the result is rounded to the nearest integer as points are held as integers. Use PySide.QtCore.QPointF for floating point accuracy.

See also

PySide.QtCore.QPoint.operator/=()

PySide.QtCore.QPoint.__add__(p2)

Parameters:p2 – PySide.QtCore.QPoint Return type:PySide.QtCore.QPoint

PySide.QtCore.QPoint.__iadd__(p)

Parameters:p – PySide.QtCore.QPoint Return type:PySide.QtCore.QPoint

Adds the given point to this point and returns a reference to this point. For example:

p = QPoint( 3, 7)
q = QPoint(-1, 4)
p += q    # p becomes (2, 11)

See also

PySide.QtCore.QPoint.operator-=()

PySide.QtCore.QPoint.__sub__()

Return type:PySide.QtCore.QPoint

PySide.QtCore.QPoint.__sub__(p2)

Parameters:p2 – PySide.QtCore.QPoint Return type:PySide.QtCore.QPoint

PySide.QtCore.QPoint.__isub__(p)

Parameters:p – PySide.QtCore.QPoint Return type:PySide.QtCore.QPoint

Subtracts the given point from this point and returns a reference to this point. For example:

p = QPoint( 3, 7)
q = QPoint(-1, 4)
p -= q    # p becomes (4, 3)

See also

PySide.QtCore.QPoint.operator+=()

PySide.QtCore.QPoint.__div__(c)

Parameters:c – PySide.QtCore.qreal Return type:PySide.QtCore.QPoint

PySide.QtCore.QPoint.__idiv__(c)

Parameters:c – PySide.QtCore.qreal Return type:PySide.QtCore.QPoint

This is an overloaded function.

Divides both x and y by the given divisor , and returns a reference to this point. For example:

p = QPoint(-3, 10)
p /= 2.5  # p becomes (-1, 4)

Note that the result is rounded to the nearest integer as points are held as integers. Use PySide.QtCore.QPointF for floating point accuracy.

See also

PySide.QtCore.QPoint.operator*=()

PySide.QtCore.QPoint.__eq__(p2)

Parameters:p2 – PySide.QtCore.QPoint Return type:PySide.QtCore.bool

PySide.QtCore.QPoint.setX(x)

Parameters:x – PySide.QtCore.int

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

See also

PySide.QtCore.QPoint.x() PySide.QtCore.QPoint.setY()

PySide.QtCore.QPoint.setY(y)

Parameters:y – PySide.QtCore.int

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

See also

PySide.QtCore.QPoint.y() PySide.QtCore.QPoint.setX()

PySide.QtCore.QPoint.toTuple()

Return type:PyObject

PySide.QtCore.QPoint.x()

Return type:PySide.QtCore.int

Returns the x coordinate of this point.

See also

PySide.QtCore.QPoint.setX() PySide.QtCore.QPoint.rx()

PySide.QtCore.QPoint.y()

Return type:PySide.QtCore.int

Returns the y coordinate of this point.

See also

PySide.QtCore.QPoint.setY() PySide.QtCore.QPoint.ry()