+
+def __GetGENERICParameters(tag, presentation_id):
+ exec "params = __manager.get%sParameters(presentation_id)" % tag
+ return params
+
+GetMeshViewParameters = lambda pres_id: __GetGENERICParameters("MeshView", pres_id)
+GetScalarMapParameters = lambda pres_id: __GetGENERICParameters("ScalarMap", pres_id)
+GetContourParameters = lambda pres_id: __GetGENERICParameters("Contour", pres_id)
+GetSlicesParameters = lambda pres_id: __GetGENERICParameters("Slices", pres_id)
+GetPointSpriteParameters = lambda pres_id: __GetGENERICParameters("PointSprite", pres_id)
+GetVectorFieldParameters = lambda pres_id: __GetGENERICParameters("VectorField", pres_id)
+#GetDeflectionShapeParameters = lambda pres_id: __GetGENERICParameters("DeflectionShape", pres_id)
+
+
+def __UpdateGENERIC(tag, presentation_id, params):
+ exec "__manager.update%s(presentation_id, params)" % tag
+ notifyGui_modifyPresentation(presentation_id)
+
+UpdateMeshView = lambda pres_id, params: __UpdateGENERIC("MeshView", pres_id, params)
+UpdateScalarMap = lambda pres_id, params: __UpdateGENERIC("ScalarMap", pres_id, params)
+UpdateContour = lambda pres_id, params: __UpdateGENERIC("Contour", pres_id, params)
+UpdateSlices = lambda pres_id, params: __UpdateGENERIC("Slices", pres_id, params)
+UpdateVectorField = lambda pres_id, params: __UpdateGENERIC("VectorField", pres_id, params)
+UpdatePointSprite = lambda pres_id, params: __UpdateGENERIC("PointSprite", pres_id, params)
+#UpdateDeflectionShape = lambda pres_id, params: __UpdateGENERIC("DeflectionShape", pres_id, params)
+
+def ComputeCellAverageSize(obj):
+ """
+ @return the average cell size
+ """
+ bb, nCells = obj.GetDataInformation().GetBounds(), obj.GetDataInformation().GetNumberOfCells()
+ bb = zip(bb[::2], bb[1::2])
+ deltas = [x[1]-x[0] for x in bb]
+ vol = reduce(lambda x,y:x*y, deltas, 1.0)
+ cellSize = (vol/nCells)**(1.0/3.0) # necessarily 3D in ParaView
+ return cellSize
+
+def GetDomainCenter(obj):
+ """
+ @return the center of the domain as the central point of the bounding box
+ """
+ bb = obj.GetDataInformation().GetBounds()
+ bb = zip(bb[::2], bb[1::2])
+ mids = [x[0] + 0.5*(x[1]-x[0]) for x in bb]
+ return mids
+
+# Taken from paraview.simple from CEA ParaView's version:
+def SetDefaultScaleFactor(active=None):
+ """Provides a good display to the bounding box of the mesh and min / max of the field.
+ This method available for filters: Warp By Vector, Glyph and Tensor Glyph"""
+ if not active:
+ active = GetActiveSource()
+ if not active:
+ return
+ name = active.__class__.__name__
+ if (name == 'WarpByVector' or name == 'TensorGlyph') and hasattr(active, 'ScaleFactor'):
+ import math
+ datainfo = active.GetProperty("Input").SMProperty.GetProxy(0).GetDataInformation()
+ if not datainfo:
+ active.ScaleFactor = 1.0
+ return
+ nbcells = datainfo.GetNumberOfCells()
+ nbpoints = datainfo.GetNumberOfPoints()
+ nbelem = nbcells
+ if nbelem == 0:
+ nbelem = nbpoints
+ abounds = datainfo.GetBounds()
+ volume = 1
+ vol = 0
+ idim = 0
+ i = 0
+ eps = 1.0e-38
+ while i < 6 :
+ vol = math.fabs( abounds[i+1] - abounds[i] )
+ if vol > 0:
+ idim += 1
+ volume *= vol
+ i += 2
+ if nbelem == 0 or math.fabs(idim) < eps:
+ active.ScaleFactor = 0.0
+ return
+ volume /= nbelem
+ scalefactor = pow( volume, 1.0 / idim )
+ maximum = 1.0
+ property = active.GetProperty('ScaleFactor')
+ domain = None
+ if property.GetDomain('vector_range').__class__.__name__ == 'vtkSMArrayRangeDomain':
+ domain = property.GetDomain('vector_range')
+ if property.GetDomain('tensor_range').__class__.__name__ == 'vtkSMArrayRangeDomain':
+ domain = property.GetDomain('tensor_range')
+ if not domain is None:
+ if domain.GetMaximumExists(3):
+ maximum = domain.GetMaximum(3)
+ if math.fabs(maximum) > eps:
+ scalefactor /= maximum
+ active.ScaleFactor = scalefactor
+ return
+ if name == 'Glyph' and hasattr(active, 'ScaleFactor') and hasattr(active, 'UseCellsCenter') and hasattr(active, 'ScaleMode'):
+ import math
+ scaledextent = 1.0
+ property = active.GetProperty('ScaleFactor')
+ bounds_domain = property.GetDomain('bounds')
+ if bounds_domain.__class__.__name__ == 'vtkSMBoundsDomain':
+ if bounds_domain.GetMaximumExists(0):
+ scaledextent = bounds_domain.GetMaximum(0)
+ usecellscenter = active.GetProperty('UseCellsCenter').GetData()
+ sdomain = "cells_"
+ if usecellscenter == 0:
+ sdomain = "points_"
+ divisor = 1.0
+ scalemode_domain = active.GetProperty('ScaleMode')
+ scalemode = scalemode_domain.ConvertValue(scalemode_domain.GetData())
+ if scalemode == 0:
+ sdomain += "scalar_range"
+ domain = property.GetDomain(sdomain)
+ if domain.__class__.__name__ == 'vtkSMArrayRangeDomain':
+ if domain.GetMaximumExists(0):
+ divisor = domain.GetMaximum(0)
+ if scalemode == 1 or scalemode == 2:
+ sdomain += "vector_range"
+ domain = property.GetDomain(sdomain)
+ if domain.__class__.__name__ == 'vtkSMArrayRangeDomain':
+ if domain.GetMaximumExists(3):
+ divisor = domain.GetMaximum(3)
+ divisor = math.fabs(divisor)
+ if divisor < 0.000000001:
+ divisor = 1
+ scalefactor = scaledextent / divisor
+ active.ScaleFactor = scalefactor
+ return
+
+def GetSliceOrigins(obj, nbSlices, normal):
+ """
+ Compute all origin points for the position of the slices.
+ @param normal is a list of 3 floats either 0 or 1 indicating the normal vector of the slices
+ """
+ from math import sqrt
+ bb = obj.GetDataInformation().GetBounds()
+ bb = zip(bb[::2], bb[1::2])
+ origin = [x[0] + 0.5*(x[1]-x[0]) for x in bb]
+ deltas = [x[1]-x[0] for x in bb]
+ # Compute extent of slices:
+ l = [normal[i]*deltas[i]**2 for i in range(3)] # either the X extend, or the XY diagonal, or the XYZ diagonal
+ plus = lambda x,y: x+y
+ extent = sqrt(reduce(plus, l, 0.0))
+ norm = sqrt(reduce(plus, normal, 0.0))
+ normal = [normal[i]/norm for i in range(3)]
+ origins = []
+ step = extent/nbSlices
+ for j in range(nbSlices):
+ orig_j = [origin[i]+normal[i]*(-0.5*extent + step*(0.5+j)) for i in range(3)]
+ origins.append(orig_j)
+ return origins
+