内容

• 公共类型
• 特性
• 公共函数
• 公共槽
• 信号
• 详细描述

QGeometryRenderer Class

class Qt3DRender ::QGeometryRenderer

Encapsulates geometry rendering. 更多...

头：	#include <QGeometryRenderer>
CMake:	find_package(Qt6 COMPONENTS 3drender REQUIRED) target_link_libraries(mytarget PRIVATE Qt6::3drender)
qmake:	QT += 3drender
Since:	Qt 5.7
实例化：	GeometryRenderer
继承：	Qt3DCore::QBoundingVolume
继承者：	Qt3DExtras::QConeMesh , Qt3DExtras::QCuboidMesh , Qt3DExtras::QCylinderMesh , Qt3DExtras::QExtrudedTextMesh , Qt3DExtras::QPlaneMesh , Qt3DExtras::QSphereMesh , Qt3DExtras::QTorusMesh ，和 Qt3DRender::QMesh

• 所有成员列表，包括继承成员

公共类型

enum	PrimitiveType { Points, Lines, LineLoop, LineStrip, Triangles, …, Patches }

特性

firstInstance : int firstVertex : int geometry : Qt3DCore::QGeometry* indexBufferByteOffset : int indexOffset : int instanceCount : int

primitiveRestartEnabled : bool primitiveType : PrimitiveType restartIndexValue : int sortIndex : float vertexCount : int verticesPerPatch : int

公共函数

	QGeometryRenderer (Qt3DCore::QNode * parent = nullptr)
int	firstInstance () const
int	firstVertex () const
Qt3DCore::QGeometry *	geometry () const
int	indexBufferByteOffset () const
int	indexOffset () const
int	instanceCount () const
bool	primitiveRestartEnabled () const
Qt3DRender::QGeometryRenderer::PrimitiveType	primitiveType () const
int	restartIndexValue () const
float	sortIndex () const
int	vertexCount () const
int	verticesPerPatch () const

公共槽

void	setFirstInstance (int firstInstance )
void	setFirstVertex (int firstVertex )
void	setGeometry (Qt3DCore::QGeometry * geometry )
void	setIndexBufferByteOffset (int offset )
void	setIndexOffset (int indexOffset )
void	setInstanceCount (int instanceCount )
void	setPrimitiveRestartEnabled (bool enabled )
void	setPrimitiveType (Qt3DRender::QGeometryRenderer::PrimitiveType primitiveType )
void	setRestartIndexValue (int index )
void	setSortIndex (float sortIndex )
void	setVertexCount (int vertexCount )
void	setVerticesPerPatch (int verticesPerPatch )

信号

void	firstInstanceChanged (int firstInstance )
void	firstVertexChanged (int firstVertex )
void	geometryChanged (Qt3DCore::QGeometry * geometry )
void	indexBufferByteOffsetChanged (int offset )
void	indexOffsetChanged (int indexOffset )
void	instanceCountChanged (int instanceCount )
void	primitiveRestartEnabledChanged (bool primitiveRestartEnabled )
void	primitiveTypeChanged (Qt3DRender::QGeometryRenderer::PrimitiveType primitiveType )
void	restartIndexValueChanged (int restartIndexValue )
void	sortIndexChanged (float sortIndex )
void	vertexCountChanged (int vertexCount )
void	verticesPerPatchChanged (int verticesPerPatch )

详细描述

A Qt3DRender::QGeometryRenderer holds all the information necessary to draw a Qt3DCore::QGeometry . A QGeometry holds the coordinates of the geometry data - QGeometryRenderer specifies how to interpret that data.

成员类型文档编制

enum QGeometryRenderer:: PrimitiveType

The type of the primitive.

常量	值	描述
Qt3DRender::QGeometryRenderer::Points	0x0000	List of points
Qt3DRender::QGeometryRenderer::Lines	0x0001	List of lines
Qt3DRender::QGeometryRenderer::LineLoop	0x0002	Connected group of lines connected at ends forming a loop
Qt3DRender::QGeometryRenderer::LineStrip	0x0003	Connected group of lines
Qt3DRender::QGeometryRenderer::Triangles	0x0004	List of triangles
Qt3DRender::QGeometryRenderer::TriangleStrip	0x0005	List of connected triangles
Qt3DRender::QGeometryRenderer::TriangleFan	0x0006	List of connected triagles where all triangles share the first vertex
Qt3DRender::QGeometryRenderer::LinesAdjacency	0x000A	Allows geometry shader to access adjacent lines in a line list
Qt3DRender::QGeometryRenderer::TrianglesAdjacency	0x000C	Allows geometry shader to access adjacent triangles in a triangle list
Qt3DRender::QGeometryRenderer::LineStripAdjacency	0x000B	Allows geometry shader to access adjacent lines in a line strip
Qt3DRender::QGeometryRenderer::TriangleStripAdjacency	0x000D	Allows geometry shader to access adjacent triangles in a triangle strip
Qt3DRender::QGeometryRenderer::Patches	0x000E	Only primitive type accepted by tesselation shader where a patch consists of arbitrary number of vertices

特性文档编制

firstInstance : int

Holds the base instance.

访问函数：

int	firstInstance () const
void	setFirstInstance (int firstInstance )

通知程序信号：

void	firstInstanceChanged (int firstInstance )

firstVertex : int

Holds the base vertex.

访问函数：

int	firstVertex () const
void	setFirstVertex (int firstVertex )

通知程序信号：

void	firstVertexChanged (int firstVertex )

geometry : Qt3DCore::QGeometry *

Holds the geometry.

访问函数：

Qt3DCore::QGeometry *	geometry () const
void	setGeometry (Qt3DCore::QGeometry * geometry )

通知程序信号：

void	geometryChanged (Qt3DCore::QGeometry * geometry )

indexBufferByteOffset : int

Holds the byte offset into the index buffer.

访问函数：

int	indexBufferByteOffset () const
void	setIndexBufferByteOffset (int offset )

通知程序信号：

void	indexBufferByteOffsetChanged (int offset )

indexOffset : int

Holds the base vertex.

访问函数：

int	indexOffset () const
void	setIndexOffset (int indexOffset )

通知程序信号：

void	indexOffsetChanged (int indexOffset )

instanceCount : int

Holds the instance count.

访问函数：

int	instanceCount () const
void	setInstanceCount (int instanceCount )

通知程序信号：

void	instanceCountChanged (int instanceCount )

primitiveRestartEnabled : bool

Holds the primitive restart flag.

访问函数：

bool	primitiveRestartEnabled () const
void	setPrimitiveRestartEnabled (bool enabled )

通知程序信号：

void	primitiveRestartEnabledChanged (bool primitiveRestartEnabled )

primitiveType : PrimitiveType

Holds the primitive type.

访问函数：

Qt3DRender::QGeometryRenderer::PrimitiveType	primitiveType () const
void	setPrimitiveType (Qt3DRender::QGeometryRenderer::PrimitiveType primitiveType )

通知程序信号：

void	primitiveTypeChanged (Qt3DRender::QGeometryRenderer::PrimitiveType primitiveType )

restartIndexValue : int

Holds the restart index.

访问函数：

int	restartIndexValue () const
void	setRestartIndexValue (int index )

通知程序信号：

void	restartIndexValueChanged (int restartIndexValue )

[since 6.0] sortIndex : float

Overrides the sorting index when depth sorting is enabled.

If depth sorting is enabled on the frame graph, the renderer will sort objects based on how far the center of the bounding volume is from the camera and render objects from the furthest to the closest.

This property can be used to override the depth index and precisely control the order in which objects are rendered. This is useful when all objects are at the same physical distance from the camera.

The actual values are not significant, only that they define an order to sort the objects. These are sorted such as the object with the smallest value is drawn first, then the second smallest, and so on.

注意： Setting this to -1.f will disable the explicit sorting for this entity and revert to using the distance from the center of the bounding volume.

This property was introduced in Qt 6.0.

访问函数：

float	sortIndex () const
void	setSortIndex (float sortIndex )

通知程序信号：

void	sortIndexChanged (float sortIndex )

另请参阅 Qt3DRender::QSortPolicy .

vertexCount : int

Holds the primitive count.

访问函数：

int	vertexCount () const
void	setVertexCount (int vertexCount )

通知程序信号：

void	vertexCountChanged (int vertexCount )

verticesPerPatch : int

Holds vertices per patch.

访问函数：

int	verticesPerPatch () const
void	setVerticesPerPatch (int verticesPerPatch )

通知程序信号：

void	verticesPerPatchChanged (int verticesPerPatch )

成员函数文档编制

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

Constructs a new QGeometryRenderer with parent .