内容

• 特性
• 公共函数
• 公共槽
• 信号
• 详细描述

QGeometry Class

class Qt3DCore ::QGeometry

Encapsulates geometry. 更多...

头：	#include <QGeometry>
CMake:	find_package(Qt6 COMPONENTS 3dcore REQUIRED) target_link_libraries(mytarget PRIVATE Qt6::3dcore)
qmake:	QT += 3dcore
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

• 所有成员列表，包括继承成员

特性

• boundingVolumePositionAttribute : Qt3DCore::QAttribute*
• maxExtent : const QVector3D
• minExtent : const QVector3D

公共函数

	QGeometry (Qt3DCore::QNode * parent = nullptr)
void	addAttribute (Qt3DCore::QAttribute * 属性 )
QList<Qt3DCore::QAttribute *>	属性 () const
Qt3DCore::QAttribute *	boundingVolumePositionAttribute () const
QVector3D	maxExtent () const
QVector3D	minExtent () const
void	removeAttribute (Qt3DCore::QAttribute * 属性 )

公共槽

void	setBoundingVolumePositionAttribute (Qt3DCore::QAttribute * boundingVolumePositionAttribute )

信号

void	boundingVolumePositionAttributeChanged (Qt3DCore::QAttribute * boundingVolumePositionAttribute )
void	maxExtentChanged (const QVector3D & maxExtent )
void	minExtentChanged (const QVector3D & minExtent )

详细描述

A Qt3DCore::QGeometry class is used to group a list of Qt3DCore::QAttribute objects together to form a geometric shape Qt3D is able to render using Qt3DCore::QGeometryRenderer. Special attribute can be set in order to calculate bounding volume of the shape.

特性文档编制

boundingVolumePositionAttribute : Qt3DCore::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：

Qt3DCore::QAttribute *	boundingVolumePositionAttribute () const
void	setBoundingVolumePositionAttribute (Qt3DCore::QAttribute * boundingVolumePositionAttribute )

通知程序信号：

void	boundingVolumePositionAttributeChanged (Qt3DCore::QAttribute * boundingVolumePositionAttribute )

另请参阅 Qt3DCore::QAttribute .

[read-only] maxExtent : const QVector3D

Holds the vertex with the highest x, y, z position values.

访问函数：

QVector3D

maxExtent () const

通知程序信号：

void	maxExtentChanged (const QVector3D & maxExtent )

[read-only] minExtent : const QVector3D

Holds the vertex with the lowest x, y, z position values.

访问函数：

QVector3D

minExtent () const

通知程序信号：

void	minExtentChanged (const QVector3D & minExtent )

成员函数文档编制

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

Constructs a new QGeometry with parent .

[invokable] void QGeometry:: addAttribute ( Qt3DCore::QAttribute * 属性 )

添加 属性 to this geometry.

注意： 此函数可以被援引，通过元对象系统和从 QML。见 Q_INVOKABLE .

QList < Qt3DCore::QAttribute *> QGeometry:: 属性 () const

Returns the list of attributes in this geometry.

[invokable] void QGeometry:: removeAttribute ( Qt3DCore::QAttribute * 属性 )

移除给定 属性 from this geometry.

注意： 此函数可以被援引，通过元对象系统和从 QML。见 Q_INVOKABLE .