Defines an attribute and how data should be read from a QBuffer. More...
Header: | #include <Qt3DCore/QAttribute> |
CMake: | find_package(Qt6 COMPONENTS 3dcore REQUIRED) target_link_libraries(mytarget PRIVATE Qt6::3dcore) |
qmake: | QT += 3dcore |
Instantiated By: | Attribute |
Inherits: | Qt3DCore::QNode |
enum | AttributeType { VertexAttribute, IndexAttribute, DrawIndirectAttribute } |
enum | VertexBaseType { Byte, UnsignedByte, Short, UnsignedShort, Int, …, Double } |
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QAttribute(Qt3DCore::QBuffer *buf, const QString &name, Qt3DCore::QAttribute::VertexBaseType type, uint dataSize, uint count, uint offset = 0, uint stride = 0, Qt3DCore::QNode *parent = nullptr) | |
QAttribute(Qt3DCore::QBuffer *buf, Qt3DCore::QAttribute::VertexBaseType type, uint dataSize, uint count, uint offset = 0, uint stride = 0, Qt3DCore::QNode *parent = nullptr) | |
QAttribute(Qt3DCore::QNode *parent = nullptr) | |
Qt3DCore::QAttribute::AttributeType | attributeType() const |
Qt3DCore::QBuffer * | buffer() const |
uint | byteOffset() const |
uint | byteStride() const |
uint | count() const |
uint | divisor() const |
QString | name() const |
Qt3DCore::QAttribute::VertexBaseType | vertexBaseType() const |
uint | vertexSize() const |
void | setAttributeType(Qt3DCore::QAttribute::AttributeType attributeType) |
void | setBuffer(Qt3DCore::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(Qt3DCore::QAttribute::VertexBaseType type) |
void | setVertexSize(uint size) |
void | attributeTypeChanged(Qt3DCore::QAttribute::AttributeType attributeType) |
void | bufferChanged(Qt3DCore::QBuffer *buffer) |
void | byteOffsetChanged(uint byteOffset) |
void | byteStrideChanged(uint byteStride) |
void | countChanged(uint count) |
void | dataSizeChanged(uint vertexSize) |
void | dataTypeChanged(Qt3DCore::QAttribute::VertexBaseType vertexBaseType) |
void | divisorChanged(uint divisor) |
void | nameChanged(const QString &name) |
void | vertexBaseTypeChanged(Qt3DCore::QAttribute::VertexBaseType vertexBaseType) |
void | vertexSizeChanged(uint vertexSize) |
QString | defaultColorAttributeName() |
QString | defaultJointIndicesAttributeName() |
QString | defaultJointWeightsAttributeName() |
QString | defaultNormalAttributeName() |
QString | defaultPositionAttributeName() |
QString | defaultTangentAttributeName() |
QString | defaultTextureCoordinate1AttributeName() |
QString | defaultTextureCoordinate2AttributeName() |
QString | defaultTextureCoordinateAttributeName() |
QBufferPtr |
There are 3 types of attributes.
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.
See also QBuffer.
The type of the attribute.
Constant | Value |
---|---|
Qt3DCore::QAttribute::VertexAttribute |
0 |
Qt3DCore::QAttribute::IndexAttribute |
1 |
Qt3DCore::QAttribute::DrawIndirectAttribute |
2 |
The type of the data.
Constant | Value |
---|---|
Qt3DCore::QAttribute::Byte |
0 |
Qt3DCore::QAttribute::UnsignedByte |
1 |
Qt3DCore::QAttribute::Short |
2 |
Qt3DCore::QAttribute::UnsignedShort |
3 |
Qt3DCore::QAttribute::Int |
4 |
Qt3DCore::QAttribute::UnsignedInt |
5 |
Qt3DCore::QAttribute::HalfFloat |
6 |
Qt3DCore::QAttribute::Float |
7 |
Qt3DCore::QAttribute::Double |
8 |
Holds the attribute type.
Access functions:
Qt3DCore::QAttribute::AttributeType | attributeType() const |
void | setAttributeType(Qt3DCore::QAttribute::AttributeType attributeType) |
Notifier signal:
void | attributeTypeChanged(Qt3DCore::QAttribute::AttributeType attributeType) |
Holds the buffer.
Access functions:
Qt3DCore::QBuffer * | buffer() const |
void | setBuffer(Qt3DCore::QBuffer *buffer) |
Notifier signal:
void | bufferChanged(Qt3DCore::QBuffer *buffer) |
Holds the byte offset.
Access functions:
uint | byteOffset() const |
void | setByteOffset(uint byteOffset) |
Notifier signal:
void | byteOffsetChanged(uint byteOffset) |
Holds the byte stride.
Access functions:
uint | byteStride() const |
void | setByteStride(uint byteStride) |
Notifier signal:
void | byteStrideChanged(uint byteStride) |
Holds the count.
Access functions:
uint | count() const |
void | setCount(uint count) |
Notifier signal:
void | countChanged(uint count) |
Holds the divisor.
Access functions:
uint | divisor() const |
void | setDivisor(uint divisor) |
Notifier signal:
void | divisorChanged(uint divisor) |
Holds the name.
Access functions:
QString | name() const |
void | setName(const QString &name) |
Notifier signal:
void | nameChanged(const QString &name) |
Holds the data type.
Access functions:
Qt3DCore::QAttribute::VertexBaseType | vertexBaseType() const |
void | setVertexBaseType(Qt3DCore::QAttribute::VertexBaseType type) |
Notifier signal:
void | vertexBaseTypeChanged(Qt3DCore::QAttribute::VertexBaseType vertexBaseType) |
Holds the data size, it can only be 1 to 4 units (scalars and vectors), 9 units (3x3 matrices) or 16 units (4x4 matrices).
Access functions:
uint | vertexSize() const |
void | setVertexSize(uint size) |
Notifier signal:
void | vertexSizeChanged(uint vertexSize) |
Constructs a new QAttribute named name from buf of type, dataSize, count, offset, and stride with parent.
Constructs a new QAttribute from buf of type, dataSize, count, offset, and stride with parent.
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(Qt3DCore::QAttribute::VertexBaseType vertexBaseType)
The signal is emitted with vertexBaseType when the dataType changed.
[static invokable]
QString QAttribute::defaultColorAttributeName()
QAttribute::defaultColorAttributeName Returns the name of the default color attribute
Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.
Note: Getter function for property defaultColorAttributeName.
[static]
QString QAttribute::defaultJointIndicesAttributeName()
QAttribute::defaultJointIndicesAttributeName Returns the name of the default joint indices attribute
Note: Getter function for property defaultJointIndicesAttributeName.
[static]
QString QAttribute::defaultJointWeightsAttributeName()
QAttribute::defaultJointIndicesAttributeName Returns the name of the default joint weights attribute
Note: Getter function for property defaultJointWeightsAttributeName.
[static invokable]
QString QAttribute::defaultNormalAttributeName()
QAttribute::defaultNormalAttributeName Returns the name of the default normal attribute
Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.
Note: Getter function for property defaultNormalAttributeName.
[static invokable]
QString QAttribute::defaultPositionAttributeName()
QAttribute::defaultPositionAttributeName Returns the name of the default position attribute
Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.
Note: Getter function for property defaultPositionAttributeName.
[static invokable]
QString QAttribute::defaultTangentAttributeName()
QAttribute::defaultTangentAttributeName Returns the name of the default tangent attribute
Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.
Note: 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
Note: 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
Note: Getter function for property defaultTextureCoordinate2AttributeName.
[static invokable]
QString QAttribute::defaultTextureCoordinateAttributeName()
QAttribute::defaultTextureCoordinateAttributeName Returns the name of the default texture coordinate attribute
Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.
Note: Getter function for property defaultTextureCoordinateAttributeName.
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Licensed under the GNU Free Documentation License, Version 1.3.
https://doc.qt.io/qt-6.2/qt3dcore-qattribute.html