QGeometryView Class
class Qt3DCore::QGeometryViewEncapsulates geometry details. More...
| Header: | #include <QGeometryView> |
| CMake: | find_package(Qt6 COMPONENTS 3dcore REQUIRED) target_link_libraries(mytarget PRIVATE Qt6::3dcore) |
| qmake: | QT += 3dcore |
| Since: | Qt 6.0 |
| Instantiated By: | GeometryView |
| Inherits: | Qt3DCore::QNode |
| Inherited By: | Qt3DExtras::QConeGeometryView, Qt3DExtras::QCuboidGeometryView, Qt3DExtras::QCylinderGeometryView, Qt3DExtras::QPlaneGeometryView, Qt3DExtras::QSphereGeometryView, and Qt3DExtras::QTorusGeometryView |
Public Types
| enum | PrimitiveType { Points, Lines, LineLoop, LineStrip, Triangles, …, Patches } |
Properties
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Public Functions
| QGeometryView(Qt3DCore::QNode *parent = nullptr) | |
| int | firstInstance() const |
| int | firstVertex() const |
| Qt3DCore::QGeometry * | geometry() const |
| int | indexBufferByteOffset() const |
| int | indexOffset() const |
| int | instanceCount() const |
| bool | primitiveRestartEnabled() const |
| Qt3DCore::QGeometryView::PrimitiveType | primitiveType() const |
| int | restartIndexValue() const |
| int | vertexCount() const |
| int | verticesPerPatch() const |
Public Slots
| void | setFirstInstance(int firstInstance) |
| void | setFirstVertex(int firstVertex) |
| void | setGeometry(Qt3DCore::QGeometry *geometry) |
| void | setIndexBufferByteOffset(int offset) |
| void | setIndexOffset(int indexOffset) |
| void | setInstanceCount(int instanceCount) |
| void | setPrimitiveRestartEnabled(bool enabled) |
| void | setPrimitiveType(Qt3DCore::QGeometryView::PrimitiveType primitiveType) |
| void | setRestartIndexValue(int index) |
| void | setVertexCount(int vertexCount) |
| void | setVerticesPerPatch(int verticesPerPatch) |
Signals
| void | firstInstanceChanged(int firstInstance) |
| void | firstVertexChanged(int firstVertex) |
| void | geometryChanged(Qt3DCore::QGeometry *geometry) |
| void | indexBufferByteOffsetChanged(int offset) |
| void | indexOffsetChanged(int indexOffset) |
| void | instanceCountChanged(int instanceCount) |
| void | primitiveRestartEnabledChanged(bool primitiveRestartEnabled) |
| void | primitiveTypeChanged(Qt3DCore::QGeometryView::PrimitiveType primitiveType) |
| void | restartIndexValueChanged(int restartIndexValue) |
| void | vertexCountChanged(int vertexCount) |
| void | verticesPerPatchChanged(int verticesPerPatch) |
Detailed Description
A GeometryView holds all the information necessary to handle a Geometry. A Geometry holds the coordinates of the geometry data - GeometryView specifies how to interpret that data.
Member Type Documentation
enum QGeometryView::PrimitiveType
The type of the primitive.
| Constant | Value | Description |
|---|---|---|
Qt3DCore::QGeometryView::Points | 0x0000 | List of points |
Qt3DCore::QGeometryView::Lines | 0x0001 | List of lines |
Qt3DCore::QGeometryView::LineLoop | 0x0002 | Connected group of lines connected at ends forming a loop |
Qt3DCore::QGeometryView::LineStrip | 0x0003 | Connected group of lines |
Qt3DCore::QGeometryView::Triangles | 0x0004 | List of triangles |
Qt3DCore::QGeometryView::TriangleStrip | 0x0005 | List of connected triangles |
Qt3DCore::QGeometryView::TriangleFan | 0x0006 | List of connected triagles where all triangles share the first vertex |
Qt3DCore::QGeometryView::LinesAdjacency | 0x000A | Allows geometry shader to access adjacent lines in a line list |
Qt3DCore::QGeometryView::TrianglesAdjacency | 0x000C | Allows geometry shader to access adjacent triangles in a triangle list |
Qt3DCore::QGeometryView::LineStripAdjacency | 0x000B | Allows geometry shader to access adjacent lines in a line strip |
Qt3DCore::QGeometryView::TriangleStripAdjacency | 0x000D | Allows geometry shader to access adjacent triangles in a triangle strip |
Qt3DCore::QGeometryView::Patches | 0x000E | Only primitive type accepted by tesselation shader where a patch consists of arbitrary number of vertices |
Property Documentation
firstInstance : int
Holds the base instance.
Access functions:
| int | firstInstance() const |
| void | setFirstInstance(int firstInstance) |
Notifier signal:
| void | firstInstanceChanged(int firstInstance) |
firstVertex : int
Holds the base vertex.
Access functions:
| int | firstVertex() const |
| void | setFirstVertex(int firstVertex) |
Notifier signal:
| void | firstVertexChanged(int firstVertex) |
geometry : Qt3DCore::QGeometry*
Holds the geometry.
Access functions:
| Qt3DCore::QGeometry * | geometry() const |
| void | setGeometry(Qt3DCore::QGeometry *geometry) |
Notifier signal:
| void | geometryChanged(Qt3DCore::QGeometry *geometry) |
indexBufferByteOffset : int
Holds the byte offset into the index buffer.
Access functions:
| int | indexBufferByteOffset() const |
| void | setIndexBufferByteOffset(int offset) |
Notifier signal:
| void | indexBufferByteOffsetChanged(int offset) |
indexOffset : int
Holds the base vertex.
Access functions:
| int | indexOffset() const |
| void | setIndexOffset(int indexOffset) |
Notifier signal:
| void | indexOffsetChanged(int indexOffset) |
instanceCount : int
Holds the instance count.
Access functions:
| int | instanceCount() const |
| void | setInstanceCount(int instanceCount) |
Notifier signal:
| void | instanceCountChanged(int instanceCount) |
primitiveRestartEnabled : bool
Holds the primitive restart flag.
Access functions:
| bool | primitiveRestartEnabled() const |
| void | setPrimitiveRestartEnabled(bool enabled) |
Notifier signal:
| void | primitiveRestartEnabledChanged(bool primitiveRestartEnabled) |
primitiveType : PrimitiveType
Holds the primitive type.
Access functions:
| Qt3DCore::QGeometryView::PrimitiveType | primitiveType() const |
| void | setPrimitiveType(Qt3DCore::QGeometryView::PrimitiveType primitiveType) |
Notifier signal:
| void | primitiveTypeChanged(Qt3DCore::QGeometryView::PrimitiveType primitiveType) |
restartIndexValue : int
Holds the restart index.
Access functions:
| int | restartIndexValue() const |
| void | setRestartIndexValue(int index) |
Notifier signal:
| void | restartIndexValueChanged(int restartIndexValue) |
vertexCount : int
Holds the primitive count.
Access functions:
| int | vertexCount() const |
| void | setVertexCount(int vertexCount) |
Notifier signal:
| void | vertexCountChanged(int vertexCount) |
verticesPerPatch : int
Holds vertices per patch.
Access functions:
| int | verticesPerPatch() const |
| void | setVerticesPerPatch(int verticesPerPatch) |
Notifier signal:
| void | verticesPerPatchChanged(int verticesPerPatch) |
Member Function Documentation
QGeometryView::QGeometryView(Qt3DCore::QNode *parent = nullptr)
Constructs a new QGeometryView with parent.
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