class QPickingSettings

The QPickingSettings class specifies how entity picking is handled. More…

Synopsis

Properties

• faceOrientationPickingModeᅟ

• pickMethodᅟ

• pickResultModeᅟ

• worldSpaceToleranceᅟ

Methods

• def __init__()

• def faceOrientationPickingMode()

• def pickMethod()

• def pickResultMode()

• def worldSpaceTolerance()

Slots

• def setFaceOrientationPickingMode()

• def setPickMethod()

• def setPickResultMode()

• def setWorldSpaceTolerance()

Signals

• def faceOrientationPickingModeChanged()

• def pickMethodChanged()

• def pickResultModeChanged()

• def worldSpaceToleranceChanged()

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

The picking settings determine how the entity picking is handled. For more details about entity picking, see QObjectPicker and QRayCaster component documentation.

When using QObjectPicker components, picking is triggered by mouse events.

When using QRayCaster or QScreenRayCaster components, picking can be explicitly triggered by the application.

In both cases, a ray will be cast through the scene to find geometry intersecting the ray.

See also

QObjectPicker QPickEvent QPickTriangleEvent QRayCaster QScreenRayCaster

class PickMethod

Specifies the picking method.

Constant	Description
Qt3DRender.QPickingSettings.BoundingVolumePicking	An entity is considered picked if the picking ray intersects the bounding volume of the entity (default).
Qt3DRender.QPickingSettings.TrianglePicking	An entity is considered picked if the picking ray intersects with any triangle of the entity’s mesh component.
Qt3DRender.QPickingSettings.LinePicking	An entity is considered picked if the picking ray intersects with any edge of the entity’s mesh component.
Qt3DRender.QPickingSettings.PointPicking	An entity is considered picked if the picking ray intersects with any point of the entity’s mesh component.
Qt3DRender.QPickingSettings.PrimitivePicking	An entity is considered picked if the picking ray intersects with any point, edge or triangle of the entity’s mesh component.

class PickResultMode

Specifies what is included into the picking results.

Constant	Description
Qt3DRender.QPickingSettings.NearestPick	Only the nearest entity to picking ray origin intersected by the picking ray is picked (default).
Qt3DRender.QPickingSettings.AllPicks	All entities that intersect the picking ray are picked.
Qt3DRender.QPickingSettings.NearestPriorityPick	Selects the entity whose object picker has the highest value. If several object pickers have the same priority, the closest one on the ray is selected.

See also

QPickEvent

class FaceOrientationPickingMode

Specifies how face orientation affects triangle picking

Constant	Description
Qt3DRender.QPickingSettings.FrontFace	Only front-facing triangles will be picked (default).
Qt3DRender.QPickingSettings.BackFace	Only back-facing triangles will be picked.
Qt3DRender.QPickingSettings.FrontAndBackFace	Both front- and back-facing triangles will be picked.

Note

Properties can be used directly when from __feature__ import true_property is used or via accessor functions otherwise.

property faceOrientationPickingModeᅟ: Qt3DRender.QPickingSettings.FaceOrientationPickingMode

Specifies how face orientation affects triangle picking

Access functions:

• faceOrientationPickingMode()

• setFaceOrientationPickingMode()

• Signal faceOrientationPickingModeChanged()

property pickMethodᅟ: Qt3DRender.QPickingSettings.PickMethod

Holds the current pick method.

By default, for performance reasons, ray casting will use bounding volume picking. This may however lead to unexpected results if a small object is englobed in the bounding sphere of a large object behind it.

Triangle picking will produce exact results but is computationally more expensive.

Access functions:

• pickMethod()

• setPickMethod()

• Signal pickMethodChanged()

property pickResultModeᅟ: Qt3DRender.QPickingSettings.PickResultMode

Holds the current pick results mode.

By default, pick results will only be produced for the entity closest to the camera.

When setting the pick method to AllPicks , events will be triggered for all the entities with a QObjectPicker along the ray.

When setting the pick method to NearestPriorityPick , events will be triggered for the nearest highest priority picker. This can be used when a given element should always be selected even if others are in front of it.

If a QObjectPicker is assigned to an entity with multiple children, an event will be triggered for each child entity that intersects the ray.

Access functions:

• pickResultMode()

• setPickResultMode()

• Signal pickResultModeChanged()

property worldSpaceToleranceᅟ: float

Holds the threshold, in model space coordinates, used to evaluate line and point picking.

Access functions:

• worldSpaceTolerance()

• setWorldSpaceTolerance()

• Signal worldSpaceToleranceChanged()

__init__([parent=None])

Parameters:

parent – QNode

faceOrientationPickingMode()

Return type:

FaceOrientationPickingMode

See also

setFaceOrientationPickingMode()

Getter of property faceOrientationPickingModeᅟ .

faceOrientationPickingModeChanged(faceOrientationPickingMode)

Parameters:

faceOrientationPickingMode – FaceOrientationPickingMode

Notification signal of property faceOrientationPickingModeᅟ .

pickMethod()

Return type:

PickMethod

See also

setPickMethod()

Getter of property pickMethodᅟ .

pickMethodChanged(pickMethod)

Parameters:

pickMethod – PickMethod

Notification signal of property pickMethodᅟ .

pickResultMode()

Return type:

PickResultMode

See also

setPickResultMode()

Getter of property pickResultModeᅟ .

pickResultModeChanged(pickResult)

Parameters:

pickResult – PickResultMode

Notification signal of property pickResultModeᅟ .

setFaceOrientationPickingMode(faceOrientationPickingMode)

Parameters:

faceOrientationPickingMode – FaceOrientationPickingMode

See also

faceOrientationPickingMode()

Setter of property faceOrientationPickingModeᅟ .

setPickMethod(pickMethod)

Parameters:

pickMethod – PickMethod

See also

pickMethod()

Setter of property pickMethodᅟ .

setPickResultMode(pickResultMode)

Parameters:

pickResultMode – PickResultMode

See also

pickResultMode()

Setter of property pickResultModeᅟ .

setWorldSpaceTolerance(worldSpaceTolerance)

Parameters:

worldSpaceTolerance – float

Sets the threshold used for line and point picking to worldSpaceTolerance.

See also

worldSpaceTolerance()

Setter of property worldSpaceToleranceᅟ .

worldSpaceTolerance()

Return type:

float

Returns the line and point precision worldSpaceTolerance

See also

setWorldSpaceTolerance()

Getter of property worldSpaceToleranceᅟ .

worldSpaceToleranceChanged(worldSpaceTolerance)

Parameters:

worldSpaceTolerance – float

Notification signal of property worldSpaceToleranceᅟ .