QSortPolicy Class

class Qt3DRender ::QSortPolicy

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

头：	#include <QSortPolicy>
qmake:	QT += 3drender
Since:	Qt 5.7
实例化：	SortPolicy
继承：	Qt3DRender::QFrameGraphNode

该类在 Qt 5.7 引入。

所有成员列表，包括继承成员

公共类型

enum	SortType { StateChangeCost, BackToFront, Material, FrontToBack, Texture, Uniform }

特性

sortTypes : QVector<int>

公共函数

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

公共槽

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

信号

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

详细描述

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.

成员类型文档编制

enum QSortPolicy:: SortType

This enum type describes the available sort types.

常量	值	描述
`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 (shader) value.
`Qt3DRender::QSortPolicy::FrontToBack`	`(1 << 3)`	sort the objects from front to back. The opposite of BackToFront.
`Qt3DRender::QSortPolicy::Texture (since Qt 5.14)`	`(1 << 4)`	sort the objects to minimize texture changes.
`Qt3DRender::QSortPolicy::Uniform (since Qt 5.15)`	`(1 << 5)`	sort the objects to minimize uniform changes.

特性文档编制

sortTypes : QVector < int >

Specifies the sorting types to be used.

访问函数：

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

通知程序信号：

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

成员函数文档编制

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

另请参阅 setSortTypes ().