QAttribute 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: Attribute
继承: Qt3DCore::QNode

公共类型

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

特性

公共函数

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

公共槽

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

信号

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

静态公共成员

QString defaultColorAttributeName ()
QString defaultNormalAttributeName ()
QString defaultPositionAttributeName ()
QString defaultTangentAttributeName ()
QString defaultTextureCoordinateAttributeName ()
typedef QBufferPtr

额外继承成员

详细描述

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

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:

AttributeType attributeType () const
void setAttributeType (AttributeType attributeType )

通知程序信号:

void attributeTypeChanged (AttributeType attributeType )

buffer : Qt3DRender::QBuffer *

Holds the buffer.

访问函数:

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

通知程序信号:

void bufferChanged (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 )

defaultColorAttributeName : const QString

访问函数:

QString defaultColorAttributeName ()

defaultNormalAttributeName : const QString

访问函数:

QString defaultNormalAttributeName ()

defaultPositionAttributeName : const QString

访问函数:

QString defaultPositionAttributeName ()

defaultTangentAttributeName : const QString

访问函数:

QString defaultTangentAttributeName ()

defaultTextureCoordinateAttributeName : const QString

访问函数:

QString defaultTextureCoordinateAttributeName ()

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:

VertexBaseType vertexBaseType () const
void setVertexBaseType (VertexBaseType type )

通知程序信号:

void vertexBaseTypeChanged (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 ( QNode * parent = nullptr)

构造新的 QAttribute with parent .

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

构造新的 QAttribute from buf of type , dataSize , count , offset ,和 stride with parent .

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

构造新的 QAttribute 命名 name from buf of type , dataSize , count , offset ,和 stride with parent .

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

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

[static] QString QAttribute:: defaultColorAttributeName ()

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

注意: Getter 函数对于特性 defaultColorAttributeName .

[static] QString QAttribute:: defaultNormalAttributeName ()

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

注意: Getter 函数对于特性 defaultNormalAttributeName .

[static] QString QAttribute:: defaultPositionAttributeName ()

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

注意: Getter 函数对于特性 defaultPositionAttributeName .

[static] QString QAttribute:: defaultTangentAttributeName ()

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

注意: Getter 函数对于特性 defaultTangentAttributeName .

[static] QString QAttribute:: defaultTextureCoordinateAttributeName ()

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

注意: Getter 函数对于特性 defaultTextureCoordinateAttributeName .

[slot] void QAttribute:: setDataSize ( uint size )

此函数被弃用。

[slot] void QAttribute:: setDataType ( VertexBaseType type )

此函数被弃用。

相关非成员

typedef Qt3DRender:: QBufferPtr