pyg4ometry.visualisation.VtkViewer¶

Attributes¶

PubViewer

Classes¶

`VtkViewer`	Visualiser.
`VtkViewerColoured`	Visualiser that extends VtkViewer. Uses "flat" interpolation and introduces control over colours.
`VtkViewerColouredMaterial`	Extension of VtkViewerColoured that uses a default material dictionary for
`MouseInteractorNamePhysicalVolume`

Functions¶

`axesFromExtents`(extent)
`viewLogicalVolumeDifference`(referenceLV, otherLV[, ...])

Module Contents¶

class pyg4ometry.visualisation.VtkViewer.VtkViewer(size=(1024, 1024), interpolation='none', **kwargs)¶

Visualiser.

Parameters:

size – (int,int) - (nPixelsHorizontal, nPixelsVeritcal), default (1024,1024)
interpolation – (str) - one of “none”, “flat”, “gouraud”, “phong”

Examples:

>>> v = VtkViewer()
>>> v.addLogicalVolume(someLV)
>>> v.view()

ren¶

renWin¶

iren¶

style¶

localmeshes¶

localmeshesOverlap¶

filters¶

filtersOverlap¶

mappers = []¶

physicalMapperMap¶

mappersOverlap = []¶

physicalMapperMapOverlap¶

actors = []¶

physicalActorMap¶

actorsOverlap = []¶

physicalActorMapOverlap¶

_xCutterOrigin = [0, 0, 0]¶

_yCutterOrigin = [0, 0, 0]¶

_zCutterOrigin = [0, 0, 0]¶

_xCutterNormal = [1, 0, 0]¶

_yCutterNormal = [0, 1, 0]¶

_zCutterNormal = [0, 0, 1]¶

xcutters = []¶

ycutters = []¶

zcutters = []¶

usercutters = []¶

axes = []¶

materialVisOptions = None¶

interps = ('none', 'flat', 'gouraud', 'phong')¶

interpolation¶

addAxes(length=20.0, origin=(0, 0, 0))¶

Add x,y,z axis to the scene.

Parameters:

length – float - length of each axis in mm
origin – (float,float,float) - (x,y,z) of origin in mm

addAxesWidget()¶

setOpacity(v, iActor=-1)¶

setWireframe(iActor=-1)¶

setSurface(iActor=-1)¶

setOpacityOverlap(v, iActor=-1)¶

setWireframeOverlap(iActor=-1)¶

setSurfaceOverlap(iActor=-1)¶

setRandomColours(seed=0)¶

setCutterOrigin(dimension, origin)¶

Parameters:

dimension – str - ‘x’, ‘y’, or ‘z’
origin – list([x,y,z])

setCutterNormal(dimension, normal)¶

Parameters:

dimension – str - ‘x’, ‘y’, or ‘z’
normal – list([x,y,z]) - should be unit vector

addMaterialVisOption(materialName, visOptionInstance)¶

Append a visualisation option instance to the dictionary of materials.

Parameters:

materialName – str - material name to match
visOptionInstance – VisualisationOptions instance

setMaterialVisOptions(materialDict)¶

Replace the (by default None) dictionary for materials to colours :param materialDict: {“materialName”: VisualisationOptions}

See also VisualisationOptions.

setCameraFocusPosition(focalPoint=[0, 0, 0], position=[100, 100, 100])¶

start()¶

exportOBJScene(fileName='scene')¶

exportVRMLScene(fileName='scene')¶

exportGLTFScene(fileName='scene.gltf')¶

exportVTPScene(fileName='scene.vtp')¶

exportScreenShot(fileName='screenshot.png', rgba=True)¶

Write the render window view to an image file.

Image types supported are: BMP, JPEG, PNM, PNG, PostScript, TIFF. The default parameters are used for all writers, change as needed.

Parameters:

fileName – The file name, if no extension then PNG is assumed.
renWin – The render window.
rgba – Used to set the buffer type.

Returns:

addLogicalVolume(logical, mtra=_np.array([[1, 0, 0], [0, 1, 0], [0, 0, 1]]), tra=_np.array([0, 0, 0]), recursive=True, addWorld=True)¶

addLogicalVolumeBounding(logical)¶

addSolid(solid, rotation=[0, 0, 0], position=[0, 0, 0], representation='surface', colour=[0.5, 0.5, 0.5], opacity=0.2)¶

Add a solid to the view with an optional rotation and translation.

Parameters:

solid (any solid in pyg4ometry.geant4.solid) – solid to add to the view
rotation (list(float, float, float) - 3 values) – list of TB rotation angles in radians
position (list(float, float, float) - 3 values) – translation in global from from centre in mm
representation (str) – the way to visualise it, e.g. ‘surface’ or ‘wireframe’
colour (list(float, float, float) - 3 values ranging from 0 - 1) – normalised rgb colour to use for the solid mesh
opacity (float, from 0 to 1) – the opacity of the solid if surface style

addBooleanSolidRecursive(solid, mtra=_np.array([[1, 0, 0], [0, 1, 0], [0, 0, 1]]), tra=_np.array([0, 0, 0]), first=True)¶

Parameters:: solid (pyg4ometry.geant4.solid.SolidBase) – pyg4ometry.geant4.solid instance.

Other parameters are for internal recursion and don’t need to be provided.

Render only a Boolean solid. If one of the constituent solids is also a Boolean, visualise those too. The resultant Boolean is shown in solid form and each constituent in a wireframe. In the case of a null mesh, only the constituents can be shown.

addMeshSimple(csgMesh, visOptions=_VisOptions(), clip=False, name='mesh')¶

addLogicalVolumeRecursive(logical, mtra=_np.array([[1, 0, 0], [0, 1, 0], [0, 0, 1]]), tra=_np.array([0, 0, 0]))¶

addMesh(pv_name, solid_name, mesh, mtra, tra, localmeshes, filters, mappers, mapperMap, actors, actorMap, visOptions=None, overlap=False, cutters=True, clippers=False)¶

view(interactive=True, resetCamera=True)¶

_getCutterData(axis='x', scaling=1.0)¶

exportCutterSection(filename, normal='x', scaling=1.0)¶

Export the section lines in plane perpendicular to normal. Exported as json text.

Parameters:

filename – (str) - name of file to export to
normal – (str) - one of “x”, “y” or “z”
scaling – (float) - multiplier for all cutter line coordinates on export

Examples:

>>> v.exportCutterSection("xz-section.dat", normal="y", scaling=1000)

viewSection(dir='x')¶

addCutterPlane(position, normal, colour=None)¶

Add a cutting plane at position=[x,y,z] with normal [nx,ny,nz].

Parameters:

position – [float, float, float] - (x,y,z) position in scene (mm)
normal – [float, float, float] - (nx,ny,z) normal unit vector
colour – None or [float, float, float] - [r,g,b] in range [0:1]

Cutters are stored in self.usercutters.

addActor(actor)¶

getOverlapVisOptions(overlaptype)¶

getMaterialVisOptions(pv)¶

_getDefaultVis(pv)¶

printViewParameters()¶

class pyg4ometry.visualisation.VtkViewer.VtkViewerColoured(*args, defaultColour=None, materialVisOptions=None, **kwargs)¶

Bases: VtkViewer

Visualiser that extends VtkViewer. Uses “flat” interpolation and introduces control over colours.

Keyword Arguments:

materialVisOptions: {“materialName”: VisualisationOptions or list or tuple, …}
interpolation (str): see VtkViewer
defaultColour (str): “random” or [r,g,b]

Examples:

>>> vMaterialMap = VtkViewerColoured(materialVisOptions={"G4_WATER":[0,0,1]})
>>> vRandom = VtkViewerColoured(defaultColour="random")
>>> vColoured = VtkViewerColoured(defaultColour=[0.1,0.1,0.1])
>>> vColourAlpha = VtkViewerColoured(defaultColour=[0.1,0.1,0.1,0.5])

of use visualisation options instances

>>> vo = pyg4ometry.visualisation.VisualisationOptions()
>>> vo.colour = [0.1,1.0,0.5]
>>> vo.alpha = 0.3
>>> options = {'G4_WATER':vo}
>>> vis = VtkViewerColoured(materialVisOptions=options)

If the value in the materialVisOptions is a list or a tuple, it will be upgraded to a VisualisationOptions instance.

materialVisOptions¶

_defaultVis¶

randomColour¶

_getDefaultVis(pv)¶

pyg4ometry.visualisation.VtkViewer.PubViewer¶

class pyg4ometry.visualisation.VtkViewer.VtkViewerColouredMaterial(*args, **kwargs)¶

Bases: PubViewer

Extension of VtkViewerColoured that uses a default material dictionary for several common materials. Material colours are in defined Colour.py for many Geant4, FLUKA and BDSIM materials.

class pyg4ometry.visualisation.VtkViewer.MouseInteractorNamePhysicalVolume(renderer, vtkviewer)¶

Bases: vtk.vtkInteractorStyleTrackballCamera

renderer¶

vtkviewer¶

rightButtonPressEvent(obj, event)¶

pyg4ometry.visualisation.VtkViewer.axesFromExtents(extent)¶

pyg4ometry.visualisation.VtkViewer.viewLogicalVolumeDifference(referenceLV, otherLV, otherTranslation=[0, 0, 0], otherRotation=[0, 0, 0], viewDifference=True)¶

Parameters:

referenceLV (pyg4ometry.geant4.LogicalVolume.) – LogicalVolume instance to view viewed in red.
referenceLV – LogicalVolume instance to view viewed in blue.
otherTranslation ([float, float, float]) – Translation (in native units, mm) of otherLV w.r.t. referenceLV
otherRotation ([float, float, float]) – Rotation (in native units, rad) of other LV w.r.t. referenceLV.

View the shapes of 2 logical volumes without their contents. The reference one will be red and the ‘other’ one will be blue.

The other one may optionally be translated and rotated (Tait-Bryant x,y,z) relative to the reference.