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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtkmeshviewer.py,v $
## Language: Python
## Date: $Date: 2006/05/26 12:35:13 $
## Version: $Revision: 1.9 $
## Copyright (c) Luca Antiga, David Steinman. All rights reserved.
## See LICENCE file for details.
## This software is distributed WITHOUT ANY WARRANTY; without even
## the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
## PURPOSE. See the above copyright notices for more information.
import vtk
import sys
import vmtkrenderer
import pypes
vmtkmeshviewer = 'vmtkMeshViewer'
class vmtkMeshViewer(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.Mesh = None
self.vmtkRenderer = None
self.OwnRenderer = 0
self.Display = 1
self.Opacity = 1.0
self.ArrayName = ''
self.ScalarRange = [0.0, 0.0]
self.ColorMap = 'cooltowarm'
self.NumberOfColors = 256
self.Color = [-1.0, -1.0, -1.0]
self.Legend = 0
self.FlatInterpolation = 0
self.Representation = 'surface'
self.Actor = None
self.ScalarBarActor = None
self.SetScriptName('vmtkmeshviewer')
self.SetScriptDoc('display a mesh')
self.SetInputMembers([
['Mesh','i','vtkUnstructuredGrid',1,'','the input mesh','vmtkmeshreader'],
['vmtkRenderer','renderer','vmtkRenderer',1,'','external renderer'],
['Display','display','bool',1,'','toggle rendering'],
['Opacity','opacity','float',1,'(0.0,1.0)','object opacity in the scene'],
['ArrayName','array','str',1,'','name of the array where the scalars to be displayed are stored'],
['ScalarRange','scalarrange','float',2,'','range of the scalar map'],
['ColorMap','colormap','str',1,'["rainbow","blackbody","cooltowarm","grayscale"]','choose the color map'],
['NumberOfColors','numberofcolors','int',1,'','number of colors in the color map'],
['Legend','legend','bool',1,'','toggle scalar bar'],
['Color','color','float',3,'','RGB color of the object in the scene'],
['FlatInterpolation','flat','bool',1,'','toggle flat or shaded surface display']
])
self.SetOutputMembers([
['Mesh','o','vtkUnstructuredGrid',1,'','the output mesh','vmtkmeshwriter']
])
def RepresentationCallback(self, obj):
if not self.Actor:
return
if self.Representation == 'surface':
self.Representation = 'edges'
elif self.Representation == 'edges':
self.Representation = 'wireframe'
elif self.Representation == 'wireframe':
self.Representation = 'surface'
if self.Representation == 'surface':
self.Actor.GetProperty().SetRepresentationToSurface()
self.Actor.GetProperty().EdgeVisibilityOff()
elif self.Representation == 'edges':
self.Actor.GetProperty().SetRepresentationToSurface()
self.Actor.GetProperty().EdgeVisibilityOn()
elif self.Representation == 'wireframe':
self.Actor.GetProperty().SetRepresentationToWireframe()
self.Actor.GetProperty().EdgeVisibilityOff()
self.vmtkRenderer.RenderWindow.Render()
def BuildView(self):
if not self.vmtkRenderer:
self.vmtkRenderer = vmtkrenderer.vmtkRenderer()
self.vmtkRenderer.Initialize()
self.OwnRenderer = 1
self.vmtkRenderer.RegisterScript(self)
if self.Actor:
self.vmtkRenderer.Renderer.RemoveActor(self.Actor)
if self.ScalarBarActor:
self.vmtkRenderer.Renderer.RemoveActor(self.ScalarBarActor)
if self.Mesh:
mapper = vtk.vtkDataSetMapper()
mapper.SetInputData(self.Mesh)
if self.ArrayName:
self.Mesh.GetPointData().SetActiveScalars(self.ArrayName)
array = self.Mesh.GetPointData().GetScalars()
if self.ScalarRange[1] > self.ScalarRange[0]:
mapper.SetScalarRange(self.ScalarRange)
else:
mapper.SetScalarRange(array.GetRange(0))
if self.ColorMap == 'grayscale':
lut = mapper.GetLookupTable()
lut.SetNumberOfTableValues(self.NumberOfColors)
lut.SetValueRange(0.0,1.0)
lut.SetSaturationRange(0.0,0.0)
lut.Build()
mapper.SetLookupTable(lut)
if self.ColorMap == 'rainbow':
lut = mapper.GetLookupTable()
lut.SetHueRange(0.666667,0.0)
lut.SetSaturationRange(0.75,0.75)
lut.SetValueRange(1.0,1.0)
lut.SetAlphaRange(1.0,1.0)
lut.SetNumberOfColors(self.NumberOfColors)
lut.Build()
mapper.SetLookupTable(lut)
if self.ColorMap == 'blackbody':
lut = mapper.GetLookupTable()
lut.SetNumberOfTableValues(self.NumberOfColors)
colorTransferFunction = vtk.vtkColorTransferFunction()
colorTransferFunction.SetColorSpaceToRGB()
colorTransferFunction.AddRGBPoint(0,0.0,0.0,0.0)
colorTransferFunction.AddRGBPoint(0.4,0.901961,0.0,0.0)
colorTransferFunction.AddRGBPoint(0.8,0.901961,0.901961,0.0)
colorTransferFunction.AddRGBPoint(1.0,1.0,1.0,1.0)
for ii,ss in enumerate([float(xx)/float(self.NumberOfColors) for xx in range(self.NumberOfColors)]):
cc = colorTransferFunction.GetColor(ss)
lut.SetTableValue(ii,cc[0],cc[1],cc[2],1.0)
lut.Build()
mapper.SetLookupTable(lut)
if self.ColorMap == 'cooltowarm':
lut = mapper.GetLookupTable()
lut.SetNumberOfTableValues(self.NumberOfColors)
colorTransferFunction = vtk.vtkColorTransferFunction()
colorTransferFunction.SetColorSpaceToDiverging()
colorTransferFunction.AddRGBPoint(0,0.231373,0.298039,0.752941)
colorTransferFunction.AddRGBPoint(0.5,0.865003,0.865003,0.865003)
colorTransferFunction.AddRGBPoint(1.0,0.705882,0.0156863,0.14902)
for ii,ss in enumerate([float(xx)/float(self.NumberOfColors) for xx in range(self.NumberOfColors)]):
cc = colorTransferFunction.GetColor(ss)
lut.SetTableValue(ii,cc[0],cc[1],cc[2],1.0)
lut.Build()
mapper.SetLookupTable(lut)
else:
mapper.ScalarVisibilityOff()
self.Actor = vtk.vtkActor()
self.Actor.SetMapper(mapper)
if (self.Color[0] >= 0.0):
self.Actor.GetProperty().SetColor(self.Color)
if self.FlatInterpolation:
self.Actor.GetProperty().SetInterpolationToFlat()
self.Actor.GetProperty().SetOpacity(self.Opacity)
self.vmtkRenderer.Renderer.AddActor(self.Actor)
self.vmtkRenderer.AddKeyBinding('w','Change surface representation.',self.RepresentationCallback)
if self.Legend and self.Actor:
self.ScalarBarActor = vtk.vtkScalarBarActor()
self.ScalarBarActor.SetLookupTable(self.Actor.GetMapper().GetLookupTable())
self.ScalarBarActor.GetLabelTextProperty().ItalicOff()
self.ScalarBarActor.GetLabelTextProperty().BoldOff()
self.ScalarBarActor.GetLabelTextProperty().ShadowOff()
## self.ScalarBarActor.GetLabelTextProperty().SetColor(0.0,0.0,0.0)
self.ScalarBarActor.SetLabelFormat('%.2f')
self.vmtkRenderer.Renderer.AddActor(self.ScalarBarActor)
if self.Display:
self.vmtkRenderer.Render()
if self.OwnRenderer:
self.vmtkRenderer.Deallocate()
def Execute(self):
if (self.Mesh == None) & (self.Display == 1):
self.PrintError('Error: no Mesh.')
self.BuildView()
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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