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QPointF¶
The QPointF class defines a point in the plane using floating point precision. More…
Synopsis¶
Functions¶
def
__add__()def
__add__(p2)def
__div__(divisor)def
__eq__(p2)def
__iadd__(p)def
__idiv__(c)def
__imul__(c)def
__isub__(p)def
__mul__(c)def
__mul__(c)def
__mul__(m)def
__mul__(matrix)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
toPoint()def
toTuple()def
transposed()def
x()def
y()
Static functions¶
def
dotProduct(p1, p2)
Detailed Description¶
A point is specified by a x coordinate and an y coordinate which can be accessed using the x() and y() functions. The coordinates of the point are specified using finite floating point numbers for accuracy. The isNull() function returns true if both x and y are set to 0.0. The coordinates can be set (or altered) using the setX() and setY() functions, or alternatively the rx() and ry() functions which return references to the coordinates (allowing direct manipulation).
Given a point p, the following statements are all equivalent:
p = QPointF() p.setX(p.x() + 1.0) p += QPointF(1.0, 0.0) p.rx() = p.rx() + 1
A QPointF object can also be used as a vector: Addition and subtraction are defined as for vectors (each component is added separately). A QPointF object can also be divided or multiplied by an int or a qreal.
In addition, the QPointF class provides a constructor converting a QPoint object into a QPointF object, and a corresponding toPoint() function which returns a QPoint copy of this point. Finally, QPointF objects can be streamed as well as compared.
See also
QPointQPolygonF
- class PySide6.QtCore.QPointF¶
PySide6.QtCore.QPointF(p)
PySide6.QtCore.QPointF(QPointF)
PySide6.QtCore.QPointF(xpos, ypos)
- Parameters
xpos – float
ypos – float
QPointF –
PySide6.QtCore.QPointF
Constructs a null point, i.e. with coordinates (0.0, 0.0)
See also
Constructs a copy of the given point.
See also
Constructs a point with the given coordinates (xpos, ypos).
- PySide6.QtCore.QPointF.__reduce__()¶
- Return type
object
- PySide6.QtCore.QPointF.__repr__()¶
- Return type
object
- static PySide6.QtCore.QPointF.dotProduct(p1, p2)¶
- Parameters
- Return type
float
p = QPointF( 3.1, 7.1) q = QPointF(-1.0, 4.1) lengthSquared = QPointF.dotProduct(p, q) # lengthSquared becomes 26.01()
Returns the dot product of p1 and p2.
- PySide6.QtCore.QPointF.isNull()¶
- Return type
bool
Returns true if both the x and y coordinates are set to 0.0 (ignoring the sign); otherwise returns false.
- PySide6.QtCore.QPointF.manhattanLength()¶
- Return type
float
Returns the sum of the absolute values of x() and y() , traditionally known as the “Manhattan length” of the vector from the origin to the point.
See also
- PySide6.QtCore.QPointF.__ne__(p2)¶
- Parameters
- Return type
bool
- PySide6.QtCore.QPointF.__mul__(matrix)¶
- Parameters
matrix –
PySide6.QtGui.QMatrix4x4- Return type
Note
This function is deprecated.
- PySide6.QtCore.QPointF.__mul__(matrix)
- Parameters
matrix –
PySide6.QtGui.QMatrix4x4- Return type
- PySide6.QtCore.QPointF.__mul__(m)
- Parameters
- Return type
- PySide6.QtCore.QPointF.__mul__(c)
- Parameters
c – float
- Return type
- PySide6.QtCore.QPointF.__mul__(c)
- Parameters
c – float
- Return type
- PySide6.QtCore.QPointF.__imul__(c)¶
- Parameters
c – float
- Return type
Multiplies this point’s coordinates by the given finite factor, and returns a reference to this point. For example:
p = QPointF(-1.1, 4.1) = 2.5 # p becomes (-2.75, 10.25)See also
operator/=()
- PySide6.QtCore.QPointF.__add__(p2)¶
- Parameters
- Return type
Returns point unmodified.
- PySide6.QtCore.QPointF.__add__()
- Return type
- PySide6.QtCore.QPointF.__iadd__(p)¶
- Parameters
- Return type
Adds the given point to this point and returns a reference to this point. For example:
p = QPointF( 3.1, 7.1) q = QPointF(-1.0, 4.1) p += q # p becomes (2.1, 11.2)See also
operator-=()
- PySide6.QtCore.QPointF.__sub__()¶
- Return type
- PySide6.QtCore.QPointF.__sub__(p2)
- Parameters
- Return type
This is an overloaded function.
Returns a QPointF object that is formed by changing the sign of each component of the given point.
Equivalent to QPointF(0,0) - point.
- PySide6.QtCore.QPointF.__isub__(p)¶
- Parameters
- Return type
Subtracts the given point from this point and returns a reference to this point. For example:
p = QPointF( 3.1, 7.1) q = QPointF(-1.0, 4.1) p -= q # p becomes (4.1, 3.0)See also
operator+=()
- PySide6.QtCore.QPointF.__div__(divisor)¶
- Parameters
divisor – float
- Return type
- PySide6.QtCore.QPointF.__idiv__(c)¶
- Parameters
c – float
- Return type
Divides both x and y by the given divisor, and returns a reference to this point. For example:
p = QPointF(-2.75, 10.25) p /= 2.5 # p becomes (-1.1, 4.1)
The divisor must not be zero or NaN.
See also
operator*=()
- PySide6.QtCore.QPointF.__eq__(p2)¶
- Parameters
- Return type
bool
- PySide6.QtCore.QPointF.setX(x)¶
- Parameters
x – float
Sets the x coordinate of this point to the given finite x coordinate.
- PySide6.QtCore.QPointF.setY(y)¶
- Parameters
y – float
Sets the y coordinate of this point to the given finite y coordinate.
- PySide6.QtCore.QPointF.toPoint()¶
- Return type
Rounds the coordinates of this point to the nearest integer, and returns a QPoint object with the rounded coordinates.
See also
QPointF()
- PySide6.QtCore.QPointF.toTuple()¶
- Return type
object
- PySide6.QtCore.QPointF.transposed()¶
- Return type
Returns a point with x and y coordinates exchanged:
- PySide6.QtCore.QPointF.x()¶
- Return type
float
Returns the x coordinate of this point.
See also
setX()rx()
- PySide6.QtCore.QPointF.y()¶
- Return type
float
Returns the y coordinate of this point.
See also
setY()ry()
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