class QObjectPicker#

The QObjectPicker class instantiates a component that can be used to interact with a QEntity by a process known as picking. More…

Synopsis#

Properties#

containsMouseᅟ
dragEnabledᅟ
hoverEnabledᅟ
pressedᅟ
priorityᅟ

Methods#

def __init__()
def containsMouse()
def isDragEnabled()
def isHoverEnabled()
def isPressed()
def priority()

Signals#

def clicked()
def containsMouseChanged()
def dragEnabledChanged()
def entered()
def exited()
def hoverEnabledChanged()
def moved()
def pressed()
def pressedChanged()
def priorityChanged()
def released()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

Detailed Description#

For every combination of viewport and camera, picking casts a ray through the scene to find entities who’s bounding volume intersects the ray. The bounding volume is computed using the values in the attribute buffer specified by the boundingVolumePositionAttribute of the geometry.

The signals pressed() , released() , clicked() , moved() , entered() , and exited() are emitted when the bounding volume defined by the pickAttribute property intersects with a ray.

Most signals carry a QPickEvent instance. If QPickingSettings::pickMode() is set to TrianglePicking , the actual type of the pick parameter will be QPickTriangleEvent .

Pick queries are performed on mouse press and mouse release. If drag is enabled, queries also happen on each mouse move while any button is pressed. If hover is enabled, queries happen on every mouse move even if no button is pressed.

For generalised ray casting queries, see QRayCaster and QScreenRayCaster .

Note

Instances of this component shouldn’t be shared, not respecting that condition will most likely result in undefined behavior.

Note

The camera far plane value affects picking and produces incorrect results due to floating-point precision if it is greater than ~100 000.