class Q3DScene¶

Q3DScene class provides description of the 3D scene being visualized. More…

Synopsis¶

Properties¶

devicePixelRatioᅟ - Device pixel ratio that is used when mapping input coordinates to pixel coordinates
graphPositionQueryᅟ - Coordinates for the user input that should be processed by the scene as a graph position query
invalidSelectionPointᅟ
primarySubViewportᅟ - Current subviewport rectangle inside the viewport where the primary view of the graphs is targeted
secondarySubViewportᅟ - Secondary viewport rectangle inside the viewport
secondarySubviewOnTopᅟ - Whether the 2D slicing view or the 3D view is drawn on top
selectionQueryPositionᅟ - Coordinates for the user input that should be processed by the scene as a selection
slicingActiveᅟ - Whether the 2D slicing view is currently active
viewportᅟ - A read only property that contains the current viewport rectangle where all the 3D rendering is targeted

Methods¶

def __init__()
def devicePixelRatio()
def graphPositionQuery()
def invalidSelectionPoint()
def isPointInPrimarySubView()
def isPointInSecondarySubView()
def isSecondarySubviewOnTop()
def isSlicingActive()
def primarySubViewport()
def secondarySubViewport()
def selectionQueryPosition()
def setDevicePixelRatio()
def setGraphPositionQuery()
def setPrimarySubViewport()
def setSecondarySubViewport()
def setSecondarySubviewOnTop()
def setSelectionQueryPosition()
def setSlicingActive()
def viewport()

Note

This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE

Detailed Description¶

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. The subviewports are by default resized by the Q3DScene. To override the resize behavior you need to listen to both viewportChanged() and slicingActiveChanged() signals and recalculate the subviewports accordingly.

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

Note

Not all graphs support the secondary 2D slicing view.

Note

Properties can be used directly when from __feature__ import true_property is used or via accessor functions otherwise.

property devicePixelRatioᅟ: float¶

This property holds The device pixel ratio that is used when mapping input coordinates to pixel coordinates..

Access functions:

devicePixelRatio()
setDevicePixelRatio()
Signal devicePixelRatioChanged()

property graphPositionQueryᅟ: QPoint¶

This property holds The coordinates for the user input that should be processed by the scene as a graph position query..

If this property is set to a value other than invalidSelectionPoint() , the graph tries to match a graph position to the specified coordinates 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 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.

Note

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

See also

queriedGraphPosition

Access functions:

graphPositionQuery()
setGraphPositionQuery()
Signal graphPositionQueryChanged()

property invalidSelectionPointᅟ: QPoint¶

Access functions:

invalidSelectionPoint()

property primarySubViewportᅟ: QRect¶

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

If the primary sub viewport has not been explicitly set, it will be one fifth of viewport() .

Note

Setting primarySubViewport larger than or outside of the viewport resizes the viewport accordingly.

Access functions:

primarySubViewport()
setPrimarySubViewport()
Signal primarySubViewportChanged()

property secondarySubViewportᅟ: QRect¶

This property holds 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 equal to the size of the viewport.

Note

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

Access functions:

secondarySubViewport()
setSecondarySubViewport()
Signal secondarySubViewportChanged()

property secondarySubviewOnTopᅟ: bool¶

This property holds Whether the 2D slicing view or the 3D view is drawn on top..

Access functions:

isSecondarySubviewOnTop()
setSecondarySubviewOnTop()
Signal secondarySubviewOnTopChanged()

property selectionQueryPositionᅟ: QPoint¶

This property holds 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, axis label, or a custom item at the specified coordinates within the primary viewport. After the rendering pass, the property is returned to its default state of invalidSelectionPoint() .

See also

selectedElement

Access functions:

selectionQueryPosition()
setSelectionQueryPosition()
Signal selectionQueryPositionChanged()

property slicingActiveᅟ: bool¶

This property holds Whether the 2D slicing view is currently active..

If true, selectionMode must have either Row or Column set to a valid selection.

Note

Not all graphs support the 2D slicing view.

Access functions:

isSlicingActive()
setSlicingActive()
Signal slicingActiveChanged()

property viewportᅟ: QRect¶

This property holds A read only property that contains the current viewport rectangle where all the 3D rendering is targeted..

Access functions:

viewport()
Signal viewportChanged()

__init__([parent=None])¶

Parameters:: parent – QObject

Constructs a basic scene with one light and one camera in it. An optional parent parameter can be given and is then passed to QObject constructor.

devicePixelRatio()¶

Return type:: float

See also

setDevicePixelRatio()

Getter of property devicePixelRatioᅟ .

devicePixelRatioChanged(pixelRatio)¶

Parameters:: pixelRatio – float

Notification signal of property devicePixelRatioᅟ .

graphPositionQuery()¶

Return type:: QPoint

See also

setGraphPositionQuery()

Getter of property graphPositionQueryᅟ .

graphPositionQueryChanged(position)¶

Parameters:: position – QPoint

Notification signal of property graphPositionQueryᅟ .

invalidSelectionPoint()¶

Return type:: QPoint

Returns a QPoint signifying an invalid selection position.

Getter of property invalidSelectionPointᅟ .

isPointInPrimarySubView(point)¶

Parameters:: point – QPoint
Return type:: bool

Returns whether the given point resides inside the primary subview or not. Returns true if the point is inside the primary subview.

Note

If subviews are superimposed, and the given point resides inside both, result is true only when the primary subview is on top.

isPointInSecondarySubView(point)¶

Parameters:: point – QPoint
Return type:: bool

Returns whether the given point resides inside the secondary subview or not. Returns true if the point is inside the secondary subview.

Note

If subviews are superimposed, and the given point resides inside both, result is true only when the secondary subview is on top.

isSecondarySubviewOnTop()¶

Return type:: bool

Getter of property secondarySubviewOnTopᅟ .

isSlicingActive()¶

Return type:: bool

Getter of property slicingActiveᅟ .

needRender()¶

primarySubViewport()¶

Return type:: QRect

See also

setPrimarySubViewport()

Getter of property primarySubViewportᅟ .

primarySubViewportChanged(subViewport)¶

Parameters:: subViewport – QRect

Notification signal of property primarySubViewportᅟ .

secondarySubViewport()¶

Return type:: QRect

See also

setSecondarySubViewport()

Getter of property secondarySubViewportᅟ .

secondarySubViewportChanged(subViewport)¶

Parameters:: subViewport – QRect

Notification signal of property secondarySubViewportᅟ .

secondarySubviewOnTopChanged(isSecondaryOnTop)¶

Parameters:: isSecondaryOnTop – bool

Notification signal of property secondarySubviewOnTopᅟ .

selectionQueryPosition()¶

Return type:: QPoint

See also

setSelectionQueryPosition()

Getter of property selectionQueryPositionᅟ .

selectionQueryPositionChanged(position)¶

Parameters:: position – QPoint

Notification signal of property selectionQueryPositionᅟ .

setDevicePixelRatio(pixelRatio)¶

Parameters:: pixelRatio – float

See also

devicePixelRatio()

Setter of property devicePixelRatioᅟ .

setGraphPositionQuery(point)¶

Parameters:: point – QPoint

See also

graphPositionQuery()

Setter of property graphPositionQueryᅟ .

setPrimarySubViewport(primarySubViewport)¶

Parameters:: primarySubViewport – QRect

See also

primarySubViewport()

Setter of property primarySubViewportᅟ .

setSecondarySubViewport(secondarySubViewport)¶

Parameters:: secondarySubViewport – QRect

See also

secondarySubViewport()

Setter of property secondarySubViewportᅟ .

setSecondarySubviewOnTop(isSecondaryOnTop)¶

Parameters:: isSecondaryOnTop – bool

See also

isSecondarySubviewOnTop()

Setter of property secondarySubviewOnTopᅟ .

setSelectionQueryPosition(point)¶

Parameters:: point – QPoint

See also

selectionQueryPosition()

Setter of property selectionQueryPositionᅟ .

setSlicingActive(isSlicing)¶

Parameters:: isSlicing – bool

See also

isSlicingActive()

Setter of property slicingActiveᅟ .

slicingActiveChanged(isSlicingActive)¶

Parameters:: isSlicingActive – bool

Notification signal of property slicingActiveᅟ .

viewport()¶

Return type:: QRect

Getter of property viewportᅟ .

viewportChanged(viewport)¶

Parameters:: viewport – QRect

Notification signal of property viewportᅟ .