QGeometry Class

( Qt3DRender::QGeometry )

封装几何体 更多...

头: #include <QGeometry>
qmake: QT += 3drender
Since: Qt 5.7
实例化: 几何体
继承: Qt3DCore::QNode
继承者: Qt3DExtras::QConeGeometry , Qt3DExtras::QCuboidGeometry , Qt3DExtras::QCylinderGeometry , Qt3DExtras::QExtrudedTextGeometry , Qt3DExtras::QPlaneGeometry , Qt3DExtras::QSphereGeometry ,和 Qt3DExtras::QTorusGeometry

特性

公共函数

QGeometry (Qt3DCore::QNode * parent = nullptr)
void addAttribute (Qt3DRender::QAttribute * 属性 )
QVector<QAttribute *> 属性 () const
QAttribute * boundingVolumePositionAttribute () const
void removeAttribute (Qt3DRender::QAttribute * 属性 )

公共槽

void setBoundingVolumePositionAttribute (QAttribute * boundingVolumePositionAttribute )

信号

void boundingVolumePositionAttributeChanged (QAttribute * boundingVolumePositionAttribute )

保护函数

QGeometry (QGeometryPrivate & dd , Qt3DCore::QNode * parent = nullptr)

额外继承成员

详细描述

封装几何体

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.

特性文档编制

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 .

访问函数:

QAttribute * boundingVolumePositionAttribute () const
void setBoundingVolumePositionAttribute (QAttribute * boundingVolumePositionAttribute )

通知程序信号:

void boundingVolumePositionAttributeChanged (QAttribute * boundingVolumePositionAttribute )

另请参阅 Qt3DRender::QAttribute .

成员函数文档编制

QGeometry:: QGeometry ( Qt3DCore::QNode * parent = nullptr)

Default constructs an instance of QGeometry.

[protected] QGeometry:: QGeometry ( QGeometryPrivate & dd , Qt3DCore::QNode * parent = nullptr)

Copy constructor.

void QGeometry:: addAttribute ( Qt3DRender::QAttribute * 属性 )

添加 属性 to this geometry.

QVector < QAttribute *> QGeometry:: 属性 () const

Returns the list of attributes in this geometry.

void QGeometry:: removeAttribute ( Qt3DRender::QAttribute * 属性 )

移除给定 属性 from this geometry.