Q3DSurface#
The Q3DSurface
class provides methods for rendering 3D surface plots. More…
Synopsis#
Properties#
axisX
- Active x-axisaxisY
- Active y-axisaxisZ
- Active z-axisflipHorizontalGrid
- Whether the horizontal axis grid is displayed on top of the graph rather than on the bottomselectedSeries
- Selected series or null
Functions#
def
addAxis
(axis)def
addSeries
(series)def
axes
()def
axisX
()def
axisY
()def
axisZ
()def
flipHorizontalGrid
()def
releaseAxis
(axis)def
removeSeries
(series)def
selectedSeries
()def
seriesList
()def
setAxisX
(axis)def
setAxisY
(axis)def
setAxisZ
(axis)def
setFlipHorizontalGrid
(flip)
Signals#
def
axisXChanged
(axis)def
axisYChanged
(axis)def
axisZChanged
(axis)def
flipHorizontalGridChanged
(flip)def
selectedSeriesChanged
(series)
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#
Warning
This section contains snippets that were automatically translated from C++ to Python and may contain errors.
This class enables developers to render 3D surface plots and to view them by rotating the scene freely. The visual properties of the surface such as draw mode and shading can be controlled via QSurface3DSeries
.
The Q3DSurface
supports selection by showing a highlighted ball on the data point where the user has clicked with left mouse button (when default input handler is in use) or selected via QSurface3DSeries
. The selection pointer is accompanied with a label which in default case shows the value of the data point and the coordinates of the point.
The value range and the label format shown on the axis can be controlled through QValue3DAxis
.
To rotate the graph, hold down the right mouse button and move the mouse. Zooming is done using mouse wheel. Both assume the default input handler is in use.
If no axes are set explicitly to Q3DSurface
, temporary default axes with no labels are created. These default axes can be modified via axis accessors, but as soon any axis is set explicitly for the orientation, the default axis for that orientation is destroyed.
How to construct a minimal Q3DSurface graph#
First, construct Q3DSurface
. Since we are running the graph as top level window in this example, we need to clear the Qt::FramelessWindowHint
flag, which gets set by default:
surface = Q3DSurface() surface.setFlags(surface.flags() ^ Qt.FramelessWindowHint)
Now Q3DSurface
is ready to receive data to be rendered. Create data elements to receive values:
data = QSurfaceDataArray() dataRow1 = QSurfaceDataRow() dataRow2 = QSurfaceDataRow()
First feed the data to the row elements and then add their pointers to the data element:
dataRow1 << QVector3D(0.0f, 0.1f, 0.5f) << QVector3D(1.0f, 0.5f, 0.5f) dataRow2 << QVector3D(0.0f, 1.8f, 1.0f) << QVector3D(1.0f, 1.2f, 1.0f) data << dataRow1 << dataRow2
Create a new series and set data to it:
series = QSurface3DSeries() series.dataProxy().resetArray(data) surface.addSeries(series)
Finally you will need to set it visible:
surface.show()
The complete code needed to create and display this graph is:
from PySide6 import QtDataVisualization if __name__ == "__main__": qputenv("QSG_RHI_BACKEND", "opengl") app = QGuiApplication(argc, argv) surface = Q3DSurface() surface.setFlags(surface.flags() ^ Qt.FramelessWindowHint) data = QSurfaceDataArray() dataRow1 = QSurfaceDataRow() dataRow2 = QSurfaceDataRow() dataRow1 << QVector3D(0.0f, 0.1f, 0.5f) << QVector3D(1.0f, 0.5f, 0.5f) dataRow2 << QVector3D(0.0f, 1.8f, 1.0f) << QVector3D(1.0f, 1.2f, 1.0f) data << dataRow1 << dataRow2 series = QSurface3DSeries() series.dataProxy().resetArray(data) surface.addSeries(series) surface.show() sys.exit(app.exec())
And this is what those few lines of code produce:
The scene can be rotated, zoomed into, and a surface point can be selected to view its position, but no other interaction is included in this minimal code example. You can learn more by familiarizing yourself with the examples provided, like the Surface Graph .
- class PySide6.QtDataVisualization.Q3DSurface([format=None[, parent=None]])#
- Parameters:
format –
PySide6.QtGui.QSurfaceFormat
parent –
PySide6.QtGui.QWindow
Constructs a new 3D surface graph with optional parent
window and surface format
.
Note
Properties can be used directly when from __feature__ import true_property
is used or via accessor functions otherwise.
- property PᅟySide6.QtDataVisualization.Q3DSurface.axisX: PySide6.QtDataVisualization.QValue3DAxis#
This property holds The active x-axis..
- Access functions:
axisX
()setAxisX
(axis)Signal
axisXChanged
(axis)
- property PᅟySide6.QtDataVisualization.Q3DSurface.axisY: PySide6.QtDataVisualization.QValue3DAxis#
This property holds The active y-axis..
- Access functions:
axisY
()setAxisY
(axis)Signal
axisYChanged
(axis)
- property PᅟySide6.QtDataVisualization.Q3DSurface.axisZ: PySide6.QtDataVisualization.QValue3DAxis#
This property holds The active z-axis..
- Access functions:
axisZ
()setAxisZ
(axis)Signal
axisZChanged
(axis)
- property PᅟySide6.QtDataVisualization.Q3DSurface.flipHorizontalGrid: bool#
This property holds Whether the horizontal axis grid is displayed on top of the graph rather than on the bottom..
In some use cases the horizontal axis grid is mostly covered by the surface, so it can be more useful to display the horizontal axis grid on top of the graph rather than on the bottom. A typical use case for this is showing 2D spectrograms using orthoGraphic projection with a top-down viewpoint.
If false
, the horizontal axis grid and labels are drawn on the horizontal background of the graph. If true
, the horizontal axis grid and labels are drawn on the opposite side of the graph from the horizontal background. Defaults to false
.
- Access functions:
setFlipHorizontalGrid
(flip)Signal
flipHorizontalGridChanged
(flip)
- property PᅟySide6.QtDataVisualization.Q3DSurface.selectedSeries: PySide6.QtDataVisualization.QSurface3DSeries#
This property holds The selected series or null..
If selectionMode has SelectionMultiSeries
set, this property holds the series which owns the selected point.
- Access functions:
Signal
selectedSeriesChanged
(series)
- PySide6.QtDataVisualization.Q3DSurface.addAxis(axis)#
- Parameters:
Adds axis
to the graph. The axes added via addAxis are not yet taken to use, addAxis is simply used to give the ownership of the axis
to the graph. The axis
must not be null or added to another graph.
See also
- PySide6.QtDataVisualization.Q3DSurface.addSeries(series)#
- Parameters:
Adds the series
to the graph. A graph can contain multiple series, but has only one set of axes. If the newly added series has specified a selected item, it will be highlighted and any existing selection will be cleared. Only one added series can have an active selection.
See also
- PySide6.QtDataVisualization.Q3DSurface.axes()#
- Return type:
Returns the list of all added axes.
See also
- PySide6.QtDataVisualization.Q3DSurface.axisX()#
- Return type:
See also
Getter of property axisX
.
- PySide6.QtDataVisualization.Q3DSurface.axisXChanged(axis)#
- Parameters:
Notification signal of property axisX
.
- PySide6.QtDataVisualization.Q3DSurface.axisY()#
- Return type:
See also
Getter of property axisY
.
- PySide6.QtDataVisualization.Q3DSurface.axisYChanged(axis)#
- Parameters:
Notification signal of property axisY
.
- PySide6.QtDataVisualization.Q3DSurface.axisZ()#
- Return type:
See also
Getter of property axisZ
.
- PySide6.QtDataVisualization.Q3DSurface.axisZChanged(axis)#
- Parameters:
Notification signal of property axisZ
.
- PySide6.QtDataVisualization.Q3DSurface.flipHorizontalGrid()#
- Return type:
bool
See also
Getter of property flipHorizontalGrid
.
- PySide6.QtDataVisualization.Q3DSurface.flipHorizontalGridChanged(flip)#
- Parameters:
flip – bool
Notification signal of property flipHorizontalGrid
.
- PySide6.QtDataVisualization.Q3DSurface.releaseAxis(axis)#
- Parameters:
Releases the ownership of the axis
back to the caller, if it is added to this graph. If the released axis
is in use, a new default axis will be created and set active.
If the default axis is released and added back later, it behaves as any other axis would.
See also
- PySide6.QtDataVisualization.Q3DSurface.removeSeries(series)#
- Parameters:
Removes the series
from the graph.
See also
- PySide6.QtDataVisualization.Q3DSurface.selectedSeries()#
- Return type:
Getter of property selectedSeries
.
- PySide6.QtDataVisualization.Q3DSurface.selectedSeriesChanged(series)#
- Parameters:
Notification signal of property selectedSeries
.
- PySide6.QtDataVisualization.Q3DSurface.seriesList()#
- Return type:
Returns the list of series added to this graph.
See also
- PySide6.QtDataVisualization.Q3DSurface.setAxisX(axis)#
- Parameters:
Sets axis
as the active x-axis. Implicitly calls addAxis()
to transfer the ownership of the axis to this graph.
If axis
is null, a temporary default axis with no labels and an automatically adjusting range is created.
This temporary axis is destroyed if another axis is set explicitly to the same orientation.
See also
Setter of property axisX
.
- PySide6.QtDataVisualization.Q3DSurface.setAxisY(axis)#
- Parameters:
Sets axis
as the active y-axis. Implicitly calls addAxis()
to transfer the ownership of the axis to this graph.
If axis
is null, a temporary default axis with no labels and an automatically adjusting range is created.
This temporary axis is destroyed if another axis is set explicitly to the same orientation.
See also
Setter of property axisY
.
- PySide6.QtDataVisualization.Q3DSurface.setAxisZ(axis)#
- Parameters:
Sets axis
as the active z-axis. Implicitly calls addAxis()
to transfer the ownership of the axis to this graph.
If axis
is null, a temporary default axis with no labels and an automatically adjusting range is created.
This temporary axis is destroyed if another axis is set explicitly to the same orientation.
See also
Setter of property axisZ
.
- PySide6.QtDataVisualization.Q3DSurface.setFlipHorizontalGrid(flip)#
- Parameters:
flip – bool
See also
Setter of property flipHorizontalGrid
.