QGeometry Class
class Qt3DRender::QGeometryEncapsulates geometry. More...
| Header: | #include <QGeometry> |
| qmake: | QT += 3drender |
| Since: | Qt 5.7 |
| Instantiated By: | Geometry |
| Inherits: | Qt3DCore::QNode |
| Inherited By: | Qt3DExtras::QConeGeometry, Qt3DExtras::QCuboidGeometry, Qt3DExtras::QCylinderGeometry, Qt3DExtras::QExtrudedTextGeometry, Qt3DExtras::QPlaneGeometry, Qt3DExtras::QSphereGeometry, and Qt3DExtras::QTorusGeometry |
This class was introduced in Qt 5.7.
Properties
- boundingVolumePositionAttribute : Qt3DRender::QAttribute*
- maxExtent : const QVector3D
- minExtent : const QVector3D
Public Functions
| void | addAttribute(Qt3DRender::QAttribute *attribute) |
| QVector<QAttribute *> | attributes() const |
| QAttribute * | boundingVolumePositionAttribute() const |
| QVector3D | maxExtent() const |
| QVector3D | minExtent() const |
| void | removeAttribute(Qt3DRender::QAttribute *attribute) |
Public Slots
| void | setBoundingVolumePositionAttribute(QAttribute *boundingVolumePositionAttribute) |
Signals
| void | boundingVolumePositionAttributeChanged(QAttribute *boundingVolumePositionAttribute) |
| void | maxExtentChanged(const QVector3D &maxExtent) |
| void | minExtentChanged(const QVector3D &minExtent) |
Detailed Description
A Qt3DRender::QGeometry class is used to group a list of Qt3DRender::QAttribute objects together to form a geometric shape Qt3D is able to render using Qt3DRender::QGeometryRenderer. Special attribute can be set in order to calculate bounding volume of the shape.
Property Documentation
boundingVolumePositionAttribute : Qt3DRender::QAttribute*
Holds the attribute used to compute the bounding volume. The bounding volume is used internally for picking and view frustum culling.
If unspecified, the system will look for the attribute using the name returned by QAttribute::defaultPositionAttributeName.
Access functions:
| QAttribute * | boundingVolumePositionAttribute() const |
| void | setBoundingVolumePositionAttribute(QAttribute *boundingVolumePositionAttribute) |
Notifier signal:
| void | boundingVolumePositionAttributeChanged(QAttribute *boundingVolumePositionAttribute) |
See also Qt3DRender::QAttribute.
maxExtent : const QVector3D
Holds the vertex with the highest x, y, z position values.
Access functions:
| QVector3D | maxExtent() const |
Notifier signal:
| void | maxExtentChanged(const QVector3D &maxExtent) |
minExtent : const QVector3D
Holds the vertex with the lowest x, y, z position values.
Access functions:
| QVector3D | minExtent() const |
Notifier signal:
| void | minExtentChanged(const QVector3D &minExtent) |
Member Function Documentation
void QGeometry::addAttribute(Qt3DRender::QAttribute *attribute)
Adds an attribute to this geometry.
Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.
QVector<QAttribute *> QGeometry::attributes() const
Returns the list of attributes in this geometry.
void QGeometry::removeAttribute(Qt3DRender::QAttribute *attribute)
Removes the given attribute from this geometry.
Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.