QSortPolicy Class

(Qt3DRender::QSortPolicy)

Provides storage for the sort types to be used More...

Header: #include <QSortPolicy>
qmake: QT += 3drender
Since: Qt 5.7
Instantiated By: SortPolicy
Inherits: Qt3DRender::QFrameGraphNode

Public Types

enum SortType { StateChangeCost, BackToFront, Material, FrontToBack }

Properties

Public Functions

QSortPolicy(Qt3DCore::QNode *parent = nullptr)
QVector<Qt3DRender::QSortPolicy::SortType> sortTypes() const
QVector<int> sortTypesInt() const

Public Slots

void setSortTypes(const QVector<Qt3DRender::QSortPolicy::SortType> &sortTypes)
void setSortTypes(const QVector<int> &sortTypesInt)

Signals

void sortTypesChanged(const QVector<Qt3DRender::QSortPolicy::SortType> &sortTypes)
void sortTypesChanged(const QVector<int> &sortTypes)

Additional Inherited Members

Detailed Description

Provides storage for the sort types to be used

A Qt3DRender::QSortPolicy class stores the sorting type used by the FrameGraph. The sort types determine how drawable entities are sorted before drawing to determine the drawing order. When QSortPolicy is present in the FrameGraph, the sorting mechanism is determined by the SortTypes list. Multiple sort types can be used simultaneously. If QSortPolicy is not present in the FrameGraph, entities are drawn in the order they appear in the entity hierarchy.

Member Type Documentation

enum QSortPolicy::SortType

This enum type describes the available sort types.

ConstantValueDescription
Qt3DRender::QSortPolicy::StateChangeCost(1 << 0)sort the objects so as to minimize the cost of changing from the currently rendered state
Qt3DRender::QSortPolicy::BackToFront(1 << 1)sort the objects from back to front based on inverted z order. More accurately, the sorting key is the z component of the projection of the camera-to-object-center vector onto the camera's view vector.
Qt3DRender::QSortPolicy::Material(1 << 2)sort the objects based on their material value
Qt3DRender::QSortPolicy::FrontToBack(1 << 3)sort the objects from front to back. The opposite of BackToFront.

Property Documentation

sortTypes : QVector<int>

Specifies the sorting types to be used.

Access functions:

QVector<int> sortTypesInt() const
void setSortTypes(const QVector<Qt3DRender::QSortPolicy::SortType> &sortTypes)
void setSortTypes(const QVector<int> &sortTypesInt)

Notifier signal:

void sortTypesChanged(const QVector<Qt3DRender::QSortPolicy::SortType> &sortTypes)
void sortTypesChanged(const QVector<int> &sortTypes)

Member Function Documentation

QSortPolicy::QSortPolicy(Qt3DCore::QNode *parent = nullptr)

Constructs QSortPolicy with given parent.

QVector<Qt3DRender::QSortPolicy::SortType> QSortPolicy::sortTypes() const

Returns the current sort types in use

See also setSortTypes().

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