Scene3D QML Type

Scene3D type provides description of the 3D scene being visualized. 更多...

import 语句：	import QtGraphs
实例化：	Q3DScene
状态：	技术预览

所有成员列表，包括继承成员
Scene3D is part of Qt Graphs QML Types for 3D .

特性

devicePixelRatio : float
graphPositionQuery : point
invalidSelectionPoint : point
primarySubViewport : rect
secondarySubViewport : rect
secondarySubviewOnTop : bool
selectionQueryPosition : point
slicingActive : bool
viewport : rect

详细描述

The 3D scene contains a single active camera and a single active light source. Visualized data is assumed to be at a fixed location.

The 3D scene also keeps track of the viewport in which graph rendering is done, the primary subviewport inside the viewport where the main 3D graphs view resides and the secondary subviewport where the 2D sliced view of the data resides.

Also the scene has flag for tracking if the secondary 2D slicing view is currently active or not.

注意： Not all graphs support the secondary 2D slicing view.

特性文档编制

devicePixelRatio : float

The current device pixel ratio that is used when mapping input coordinates to pixel coordinates.

graphPositionQuery : point

The coordinates for the user input that should be processed by the scene as a graph position query. If this property is set to value other than invalidSelectionPoint , the graph tries to match a graph position to the given point within the primary viewport. After the rendering pass, this property is returned to its default state of invalidSelectionPoint . The queried graph position can be read from the AbstractGraph3D::queriedGraphPosition property after the next render pass.

There is no single correct 3D coordinate to match a particular screen position, so to be consistent, the queries are always done against the inner sides of an invisible box surrounding the graph.

注意： Bar graphs allow graph position queries only at the graph floor level.

另请参阅 AbstractGraph3D::queriedGraphPosition .

invalidSelectionPoint : point [read-only]

A constant property providing an invalid point for selection.

primarySubViewport : rect

The current subviewport rectangle inside the viewport where the primary view of the graphs is targeted.

若 slicingActive is false , the primary sub viewport will be equal to the viewport. If slicingActive is true and the primary sub viewport has not been explicitly set, it will be one fifth of the viewport.

注意： Setting primarySubViewport larger than or outside of viewport resizes viewport accordingly.

secondarySubViewport : rect

The secondary viewport rectangle inside the viewport. The secondary viewport is used for drawing the 2D slice view in some graphs. If it has not been explicitly set, it will be null. If slicingActive is true , it will be equal to the viewport.

注意： If the secondary sub viewport is larger than or outside of the viewport, the viewport is resized accordingly.

secondarySubviewOnTop : bool

Defines whether the 2D slicing view or the 3D view is drawn on top.

selectionQueryPosition : point

The coordinates for the user input that should be processed by the scene as a selection. If this property is set to a value other than invalidSelectionPoint , the graph tries to select a data item at the given point within the primary viewport. After the rendering pass, the property is returned to its default state of invalidSelectionPoint .

slicingActive : bool

Defines whether the 2D slicing view is currently active. If true , AbstractGraph3D::selectionMode must have either the AbstractGraph3D.SelectionRow or AbstractGraph3D.SelectionColumn set to a valid selection.

注意： Not all graphs support the 2D slicing view.

viewport : rect [read-only]

The current viewport rectangle where all 3D rendering is targeted.