QAttribute Class
(Qt3DRender::QAttribute)Defines an attribute and how data should be read from a QBuffer. 更多...
| 头文件: | #include <Qt3DRender/QAttribute> |
| qmake: | QT += 3drender |
| Instantiated By: | Attribute |
| 基类: | Qt3DCore::QNode |
公有类型
| enum | AttributeType { VertexAttribute, IndexAttribute, DrawIndirectAttribute } |
| enum | VertexBaseType { Byte, UnsignedByte, Short, UnsignedShort, ..., Double } |
属性
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- 3 个属性继承自 Qt3DCore::QNode
- 1 个属性继承自 QObject
公有函数
| 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 |
- 11 个公有函数继承自 Qt3DCore::QNode
- 32 个公有函数继承自 QObject
公有槽函数
| void | setAttributeType(AttributeType attributeType) |
| void | setBuffer(QBuffer *buffer) |
| void | setByteOffset(uint byteOffset) |
| void | setByteStride(uint byteStride) |
| void | setCount(uint count) |
(deprecated) void | setDataSize(uint size) |
(deprecated) void | setDataType(VertexBaseType type) |
| void | setDivisor(uint divisor) |
| void | setName(const QString &name) |
| void | setVertexBaseType(VertexBaseType type) |
| void | setVertexSize(uint size) |
- 3 个公有槽函数继承自 Qt3DCore::QNode
- 1 个公有槽函数继承自 QObject
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) |
- 4 个信号继承自 Qt3DCore::QNode
- 2 个信号继承自 QObject
静态公有成员
| QString | defaultColorAttributeName() |
| QString | defaultNormalAttributeName() |
| QString | defaultPositionAttributeName() |
| QString | defaultTangentAttributeName() |
| QString | defaultTextureCoordinateAttributeName() |
- 10 个静态公有成员继承自 QObject
相关非成员
| typedef | QBufferPtr |
其他继承的成员
- 1 个公有变量继承自 QObject
- 2 个受保护的函数继承自 Qt3DCore::QNode
- 9 个受保护的函数继承自 QObject
- 2 个受保护的变量继承自 QObject
详细描述
Defines an attribute and how data should be read from a QBuffer.
There are 3 types of attributes.
- VertexAttribute: used to define data to be read on a per vertex basis
- IndexAttribute: used to define vertex indices when indexed draw calls are to be used
- DrawIndirectAttribute: used to specify the DrawIndirect buffer to be used when indirect draw calls are to be used
Note: 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 module.
参见 QBuffer.
成员类型
enum QAttribute::AttributeType
The type of the attribute.
| Constant | Value |
|---|---|
Qt3DRender::QAttribute::VertexAttribute | 0 |
Qt3DRender::QAttribute::IndexAttribute | 1 |
Qt3DRender::QAttribute::DrawIndirectAttribute | 2 |
enum QAttribute::VertexBaseType
The type of the data.
| Constant | Value |
|---|---|
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 |
属性
attributeType : AttributeType
Holds the attribute type.
访问函数:
| AttributeType | attributeType() const |
| void | setAttributeType(AttributeType attributeType) |
Notifier signal:
| void | attributeTypeChanged(AttributeType attributeType) |
buffer : Qt3DRender::QBuffer *
Holds the buffer.
访问函数:
| QBuffer * | buffer() const |
| void | setBuffer(QBuffer *buffer) |
Notifier signal:
| void | bufferChanged(QBuffer *buffer) |
byteOffset : uint
Holds the byte offset.
访问函数:
| uint | byteOffset() const |
| void | setByteOffset(uint byteOffset) |
Notifier signal:
| void | byteOffsetChanged(uint byteOffset) |
byteStride : uint
Holds the byte stride.
访问函数:
| uint | byteStride() const |
| void | setByteStride(uint byteStride) |
Notifier signal:
| void | byteStrideChanged(uint byteStride) |
count : uint
Holds the count.
访问函数:
| uint | count() const |
| void | setCount(uint count) |
Notifier signal:
| 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) |
Notifier signal:
| void | divisorChanged(uint divisor) |
name : QString
Holds the name.
访问函数:
| QString | name() const |
| void | setName(const QString &name) |
Notifier signal:
| void | nameChanged(const QString &name) |
vertexBaseType : VertexBaseType
Holds the data type.
访问函数:
| VertexBaseType | vertexBaseType() const |
| void | setVertexBaseType(VertexBaseType type) |
Notifier signal:
| 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) |
Notifier signal:
| void | vertexSizeChanged(uint vertexSize) |
成员函数
QAttribute::QAttribute(QNode *parent = nullptr)
Constructs a new QAttribute with parent.
QAttribute::QAttribute(QBuffer *buf, VertexBaseType type, uint dataSize, uint count, uint offset = 0, uint stride = 0, QNode *parent = nullptr)
Constructs a new QAttribute from buf of type, dataSize, count, offset, and 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)
Constructs a new QAttribute named name from buf of type, dataSize, count, offset, and 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
Note: Getter function for property defaultColorAttributeName.
[static] QString QAttribute::defaultNormalAttributeName()
QAttribute::defaultNormalAttributeName Returns the name of the default normal attribute
Note: Getter function for property defaultNormalAttributeName.
[static] QString QAttribute::defaultPositionAttributeName()
QAttribute::defaultPositionAttributeName Returns the name of the default position attribute
Note: Getter function for property defaultPositionAttributeName.
[static] QString QAttribute::defaultTangentAttributeName()
QAttribute::defaultTangentAttributeName Returns the name of the default tangent attribute
Note: Getter function for property defaultTangentAttributeName.
[static] QString QAttribute::defaultTextureCoordinateAttributeName()
QAttribute::defaultTextureCoordinateAttributeName Returns the name of the default texture coordinate attribute
Note: Getter function for property defaultTextureCoordinateAttributeName.
[slot] void QAttribute::setDataSize(uint size)
This function is deprecated.
[slot] void QAttribute::setDataType(VertexBaseType type)
This function is deprecated.