QAttribute Class

class Qt3DRender ::QAttribute

Defines an attribute and how data should be read from a QBuffer . 更多...

头: #include <Qt3DRender/QAttribute>
qmake: QT += 3drender
实例化: 属性
继承: Qt3DCore::QNode

公共类型

enum AttributeType { VertexAttribute, IndexAttribute, DrawIndirectAttribute }
enum VertexBaseType { Byte, UnsignedByte, Short, UnsignedShort, Int, …, Double }

特性

公共函数

QAttribute (Qt3DRender::QBuffer * buf , const QString & name , Qt3DRender::QAttribute::VertexBaseType type , uint dataSize , uint count , uint offset = 0, uint stride = 0, Qt3DCore::QNode * parent = nullptr)
QAttribute (Qt3DRender::QBuffer * buf , Qt3DRender::QAttribute::VertexBaseType type , uint dataSize , uint count , uint offset = 0, uint stride = 0, Qt3DCore::QNode * parent = nullptr)
QAttribute (Qt3DCore::QNode * parent = nullptr)
Qt3DRender::QAttribute::AttributeType attributeType () const
Qt3DRender::QBuffer * buffer () const
uint byteOffset () const
uint byteStride () const
uint count () const
uint divisor () const
QString name () const
Qt3DRender::QAttribute::VertexBaseType vertexBaseType () const
uint vertexSize () const

公共槽

void setAttributeType (Qt3DRender::QAttribute::AttributeType attributeType )
void setBuffer (Qt3DRender::QBuffer * buffer )
void setByteOffset (uint byteOffset )
void setByteStride (uint byteStride )
void setCount (uint count )
void setDivisor (uint divisor )
void setName (const QString & name )
void setVertexBaseType (Qt3DRender::QAttribute::VertexBaseType type )
void setVertexSize (uint size )

信号

void attributeTypeChanged (Qt3DRender::QAttribute::AttributeType attributeType )
void bufferChanged (Qt3DRender::QBuffer * buffer )
void byteOffsetChanged (uint byteOffset )
void byteStrideChanged (uint byteStride )
void countChanged (uint count )
void dataSizeChanged (uint vertexSize )
void dataTypeChanged (Qt3DRender::QAttribute::VertexBaseType vertexBaseType )
void divisorChanged (uint divisor )
void nameChanged (const QString & name )
void vertexBaseTypeChanged (Qt3DRender::QAttribute::VertexBaseType vertexBaseType )
void vertexSizeChanged (uint vertexSize )

静态公共成员

QString defaultColorAttributeName ()
QString defaultJointIndicesAttributeName ()
QString defaultJointWeightsAttributeName ()
QString defaultNormalAttributeName ()
QString defaultPositionAttributeName ()
QString defaultTangentAttributeName ()
QString defaultTextureCoordinate1AttributeName ()
QString defaultTextureCoordinate2AttributeName ()
QString defaultTextureCoordinateAttributeName ()
typedef QBufferPtr

详细描述

There are 3 types of attributes.

注意: when an attribute is of type DrawIndirectAttribute , only count, stride and offset are relevant.

When providing your own attributes, it may make sense to name your attribute using helpers such as QAttribute::defaultPositionAttributeName () as that will ensure your geometry will be compatible with picking and the various materials provided in the Qt3DExtras 模块。

另请参阅 QBuffer .

成员类型文档编制

enum QAttribute:: AttributeType

The type of the attribute.

常量
Qt3DRender::QAttribute::VertexAttribute 0
Qt3DRender::QAttribute::IndexAttribute 1
Qt3DRender::QAttribute::DrawIndirectAttribute 2

enum QAttribute:: VertexBaseType

The type of the data.

常量
Qt3DRender::QAttribute::Byte 0
Qt3DRender::QAttribute::UnsignedByte 1
Qt3DRender::QAttribute::Short 2
Qt3DRender::QAttribute::UnsignedShort 3
Qt3DRender::QAttribute::Int 4
Qt3DRender::QAttribute::UnsignedInt 5
Qt3DRender::QAttribute::HalfFloat 6
Qt3DRender::QAttribute::Float 7
Qt3DRender::QAttribute::Double 8

特性文档编制

attributeType : AttributeType

Holds the attribute type.

访问函数:

Qt3DRender::QAttribute::AttributeType attributeType () const
void setAttributeType (Qt3DRender::QAttribute::AttributeType attributeType )

通知程序信号:

void attributeTypeChanged (Qt3DRender::QAttribute::AttributeType attributeType )

buffer : Qt3DRender::QBuffer *

Holds the buffer.

访问函数:

Qt3DRender::QBuffer * buffer () const
void setBuffer (Qt3DRender::QBuffer * buffer )

通知程序信号:

void bufferChanged (Qt3DRender::QBuffer * buffer )

byteOffset : uint

Holds the byte offset.

访问函数:

uint byteOffset () const
void setByteOffset (uint byteOffset )

通知程序信号:

void byteOffsetChanged (uint byteOffset )

byteStride : uint

Holds the byte stride.

访问函数:

uint byteStride () const
void setByteStride (uint byteStride )

通知程序信号:

void byteStrideChanged (uint byteStride )

count : uint

Holds the count.

访问函数:

uint count () const
void setCount (uint count )

通知程序信号:

void countChanged (uint count )

divisor : uint

Holds the divisor.

访问函数:

uint divisor () const
void setDivisor (uint divisor )

通知程序信号:

void divisorChanged (uint divisor )

name : QString

Holds the name.

访问函数:

QString name () const
void setName (const QString & name )

通知程序信号:

void nameChanged (const QString & name )

vertexBaseType : VertexBaseType

Holds the data type.

访问函数:

Qt3DRender::QAttribute::VertexBaseType vertexBaseType () const
void setVertexBaseType (Qt3DRender::QAttribute::VertexBaseType type )

通知程序信号:

void vertexBaseTypeChanged (Qt3DRender::QAttribute::VertexBaseType vertexBaseType )

vertexSize : uint

Holds the data size, it can only be 1 to 4 units (scalars and vectors), 9 units (3x3 matrices) or 16 units (4x4 matrices).

访问函数:

uint vertexSize () const
void setVertexSize (uint size )

通知程序信号:

void vertexSizeChanged (uint vertexSize )

成员函数文档编制

QAttribute:: QAttribute ( Qt3DRender::QBuffer * buf , const QString & name , Qt3DRender::QAttribute::VertexBaseType type , uint dataSize , uint count , uint offset = 0, uint stride = 0, Qt3DCore::QNode * parent = nullptr)

Constructs a new QAttribute named name from buf of type , dataSize , count , offset ,和 stride with parent .

QAttribute:: QAttribute ( Qt3DRender::QBuffer * buf , Qt3DRender::QAttribute::VertexBaseType type , uint dataSize , uint count , uint offset = 0, uint stride = 0, Qt3DCore::QNode * parent = nullptr)

Constructs a new QAttribute from buf of type , dataSize , count , offset ,和 stride with parent .

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

Constructs a new QAttribute with parent .

[signal] void QAttribute:: dataSizeChanged ( uint vertexSize )

The signal is emitted with vertexSize when the dataSize changes.

[signal] void QAttribute:: dataTypeChanged ( Qt3DRender::QAttribute::VertexBaseType vertexBaseType )

The signal is emitted with vertexBaseType when the dataType changed.

[static] QString QAttribute:: defaultColorAttributeName ()

QAttribute::defaultColorAttributeName Returns the name of the default color attribute

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

注意: Getter function for property defaultColorAttributeName.

[static] QString QAttribute:: defaultJointIndicesAttributeName ()

QAttribute::defaultJointIndicesAttributeName Returns the name of the default joint indices attribute

注意: Getter function for property defaultJointIndicesAttributeName.

[static] QString QAttribute:: defaultJointWeightsAttributeName ()

QAttribute::defaultJointIndicesAttributeName Returns the name of the default joint weights attribute

注意: Getter function for property defaultJointWeightsAttributeName.

[static] QString QAttribute:: defaultNormalAttributeName ()

QAttribute::defaultNormalAttributeName Returns the name of the default normal attribute

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

注意: Getter function for property defaultNormalAttributeName.

[static] QString QAttribute:: defaultPositionAttributeName ()

QAttribute::defaultPositionAttributeName Returns the name of the default position attribute

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

注意: Getter function for property defaultPositionAttributeName.

[static] QString QAttribute:: defaultTangentAttributeName ()

QAttribute::defaultTangentAttributeName Returns the name of the default tangent attribute

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

注意: Getter function for property defaultTangentAttributeName.

[static] QString QAttribute:: defaultTextureCoordinate1AttributeName ()

QAttribute::defaultTextureCoordinate1AttributeName Returns the name of the default attribute for the second layer of texture coordinates

注意: Getter function for property defaultTextureCoordinate1AttributeName.

[static] QString QAttribute:: defaultTextureCoordinate2AttributeName ()

QAttribute::defaultTextureCoordinate2AttributeName Returns the name of the default attribute for the third layer of texture coordinates

注意: Getter function for property defaultTextureCoordinate2AttributeName.

[static] QString QAttribute:: defaultTextureCoordinateAttributeName ()

QAttribute::defaultTextureCoordinateAttributeName Returns the name of the default texture coordinate attribute

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

注意: Getter function for property defaultTextureCoordinateAttributeName.

相关非成员

typedef QBufferPtr