QGeometryRenderer Class

class Qt3DRender ::QGeometryRenderer

Encapsulates geometry rendering. 更多...

头：	#include <QGeometryRenderer>
qmake:	QT += 3drender
Since:	Qt 5.7
实例化：	GeometryRenderer
继承：	Qt3DCore::QComponent
继承者：	Qt3DExtras::QConeMesh , Qt3DExtras::QCuboidMesh , Qt3DExtras::QCylinderMesh , Qt3DExtras::QExtrudedTextMesh , Qt3DExtras::QPlaneMesh , Qt3DExtras::QSphereMesh , Qt3DExtras::QTorusMesh ，和 Qt3DRender::QMesh

该类在 Qt 5.7 引入。

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 : Qt3DRender::QGeometry*
indexBufferByteOffset : int
indexOffset : int
instanceCount : int

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

公共函数

	QGeometryRenderer (Qt3DCore::QNode * parent = nullptr)
int	firstInstance () const
int	firstVertex () const
Qt3DRender::QGeometry *	geometry () const
Qt3DRender::QGeometryFactoryPtr	geometryFactory () const
int	indexBufferByteOffset () const
int	indexOffset () const
int	instanceCount () const
bool	primitiveRestartEnabled () const
Qt3DRender::QGeometryRenderer::PrimitiveType	primitiveType () const
int	restartIndexValue () const
void	setGeometryFactory (const Qt3DRender::QGeometryFactoryPtr & factory )
int	vertexCount () const
int	verticesPerPatch () const

公共槽

void	setFirstInstance (int firstInstance )
void	setFirstVertex (int firstVertex )
void	setGeometry (Qt3DRender::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	setVertexCount (int vertexCount )
void	setVerticesPerPatch (int verticesPerPatch )

信号

void	firstInstanceChanged (int firstInstance )
void	firstVertexChanged (int firstVertex )
void	geometryChanged (Qt3DRender::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	vertexCountChanged (int vertexCount )
void	verticesPerPatchChanged (int verticesPerPatch )

详细描述

A Qt3DRender::QGeometryRenderer holds all the information necessary to draw a Qt3DRender::QGeometry 。 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 : Qt3DRender::QGeometry *

Holds the geometry.

访问函数：

Qt3DRender::QGeometry *	geometry () const
void	setGeometry (Qt3DRender::QGeometry * geometry )

通知程序信号：

void	geometryChanged (Qt3DRender::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 )

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 .

Qt3DRender::QGeometryFactoryPtr QGeometryRenderer:: geometryFactory () const

Returns the geometry functor.

另请参阅 setGeometryFactory ().

void QGeometryRenderer:: setGeometryFactory (const Qt3DRender::QGeometryFactoryPtr & factory )

Sets the geometry factory .

另请参阅 geometryFactory ().