QGeometryView Class

class Qt3DCore::QGeometryView

Encapsulates 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

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.

ConstantValueDescription
Qt3DCore::QGeometryView::Points0x0000List of points
Qt3DCore::QGeometryView::Lines0x0001List of lines
Qt3DCore::QGeometryView::LineLoop0x0002Connected group of lines connected at ends forming a loop
Qt3DCore::QGeometryView::LineStrip0x0003Connected group of lines
Qt3DCore::QGeometryView::Triangles0x0004List of triangles
Qt3DCore::QGeometryView::TriangleStrip0x0005List of connected triangles
Qt3DCore::QGeometryView::TriangleFan0x0006List of connected triagles where all triangles share the first vertex
Qt3DCore::QGeometryView::LinesAdjacency0x000AAllows geometry shader to access adjacent lines in a line list
Qt3DCore::QGeometryView::TrianglesAdjacency0x000CAllows geometry shader to access adjacent triangles in a triangle list
Qt3DCore::QGeometryView::LineStripAdjacency0x000BAllows geometry shader to access adjacent lines in a line strip
Qt3DCore::QGeometryView::TriangleStripAdjacency0x000DAllows geometry shader to access adjacent triangles in a triangle strip
Qt3DCore::QGeometryView::Patches0x000EOnly 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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