Back to Doc.qt.io
Contact Us Blog Download Qt

Qt3DRender::QRayCaster Class

class Qt3DRender::QRayCaster

Qt3DRender::QRayCaster is used to perform ray casting tests in 3d world coordinates. More...

Header: #include <QRayCaster>
CMake: find_package(Qt6 REQUIRED COMPONENTS 3drender)
target_link_libraries(mytarget PRIVATE Qt6::3drender)
qmake: QT += 3drender
In QML: RayCaster
Inherits: Qt3DRender::QAbstractRayCaster
Status: Deprecated

Properties

Public Functions

QVector3D direction() const
float length() const
QVector3D origin() const

Public Slots

void setDirection(const QVector3D &direction)
void setLength(float length)
void setOrigin(const QVector3D &origin)
void trigger()
void trigger(const QVector3D &origin, const QVector3D &direction, float length)

Signals

void directionChanged(const QVector3D &direction)
void lengthChanged(float length)
void originChanged(const QVector3D &origin)

Detailed Description

The 3d ray is defined by its origin, direction and length. It will be affected by the transformations applied to the entity it belongs to.

Ray casting tests will be performed every frame as long as the component is enabled. The hits property will be updated with the list of intersections.

See also QAbstractRayCaster, QScreenRayCaster, and QNoPicking.

Property Documentation

direction : QVector3D

Holds the direction of the 3D ray. This should be a unit vector.

Access functions:

QVector3D direction() const
void setDirection(const QVector3D &direction)

Notifier signal:

void directionChanged(const QVector3D &direction)

length : float

Holds the length of the 3D ray.

Access functions:

float length() const
void setLength(float length)

Notifier signal:

void lengthChanged(float length)

origin : QVector3D

Holds the origin of the 3D ray in local coordinates.

Access functions:

QVector3D origin() const
void setOrigin(const QVector3D &origin)

Notifier signal:

void originChanged(const QVector3D &origin)

Member Function Documentation

[slot] void QRayCaster::setLength(float length)

Sets the length of the ray to length.

If the value is less than or equal to zero, the ray is concidered to be infinite.

Note: Setter function for property length.

See also length().

[slot] void QRayCaster::trigger()

Convenience method to enable the component and trigger tests using the current ray.

[slot] void QRayCaster::trigger(const QVector3D &origin, const QVector3D &direction, float length)

Convenience method to set the ray details origin, direction, and length, and enable the component to trigger tests.

© 2024 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.