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#!/usr/bin/env python
## Program: VMTK
## Module: $RCSfile: vmtkpathlineanimator.py,v $
## Language: Python
## Date: $Date: 2013/07/09 16:10:27 $
## Version: $Revision: 1.6 $
## 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.
## Note: this class was contributed by
## Simone Manini
## Orobix Srl
import vtk
import sys
import os
import vtkvmtk
import vmtkrenderer
import vmtksurfaceviewer
import pypes
vmtkpathlineanimator = 'vmtkPathLineAnimator'
class vmtkPathLineAnimator(pypes.pypeScript):
def __init__(self):
pypes.pypeScript.__init__(self)
self.InputTraces = None
self.vmtkRenderer = None
self.OwnRenderer = 0
self.ArrayName = "Velocity"
self.Pattern = "frame_%04d.png"
self.ImagesDirectory = os.getenv("HOME")
self.MinTime = 0.0
self.MaxTime = 1.0
self.Legend = 0
self.ColorMap = 'cooltowarm'
self.NumberOfColors = 256
self.TimeStep = None
self.StreakLineTimeLength = 0.01
self.WithScreenshots = 0
self.ArrayMax = None
self.ArrayUnit = 'cm/s'
self.PointSize = 6
self.LineWidth = 2
self.Method = 'particles'
self.Traces = None
self.SetScriptName('vmtkpathlineanimator')
self.SetScriptDoc('Particle or streaklines animation')
self.SetInputMembers([
['InputTraces','i','vtkPolyData',1,'','traces', 'vmtksurfacereader'],
['vmtkRenderer','renderer','vmtkRenderer',1,'','external renderer'],
['Method','method','str',1,'["particles","streaklines"]','animator method'],
['StreakLineTimeLength','streaklinetimelength','float',1,'(0.0,)'],
['Legend','legend','bool',1,'','toggle scalar bar'],
['ColorMap','colormap','str',1,'["rainbow","blackbody","cooltowarm","grayscale"]','change the color map'],
['NumberOfColors','numberofcolors','int',1,'','number of colors in the color map'],
['MinTime','mintime','float',1,'(0.0,)'],
['MaxTime','maxtime','float',1,'(0.0,)'],
['TimeStep','timestep','float',1,'(0.0,)'],
['Pattern','pattern','str',1,''],
['ImagesDirectory','imagesdirectory','str',1,''],
['WithScreenshots','screenshot','bool',1,''],
['ArrayMax','arraymax','float',1,'(0.0,)'],
['ArrayUnit','arrayunit','str',1,'', 'array unit measure'],
['PointSize','pointsize','int',1,'(1,)'],
['LineWidth','linewidth','int',1,'(1,)'],
['ArrayName','array','str',1,'','name of the array where the scalars to be displayed are stored'],
])
self.SetOutputMembers([
])
def Screenshot(self, surfaceViewer, timestep):
fileName = self.Pattern%timestep
homeDir = self.ImagesDirectory
windowToImage = vtk.vtkWindowToImageFilter()
windowToImage.SetInput(surfaceViewer.vmtkRenderer.RenderWindow)
windowToImage.SetMagnification(surfaceViewer.vmtkRenderer.ScreenshotMagnification)
windowToImage.Update()
surfaceViewer.vmtkRenderer.RenderWindow.Render()
writer = vtk.vtkPNGWriter()
writer.SetInputConnection(windowToImage.GetOutputPort())
writer.SetFileName(os.path.join(homeDir,fileName))
writer.Write()
def Execute(self):
if (self.InputTraces == None):
self.PrintError('Error: no Traces.')
if (self.TimeStep == None):
self.PrintError('Error: no TimeStep.')
if not self.vmtkRenderer:
self.vmtkRenderer = vmtkrenderer.vmtkRenderer()
self.vmtkRenderer.Initialize()
self.OwnRenderer = 1
surfaceViewer = vmtksurfaceviewer.vmtkSurfaceViewer()
surfaceViewer.vmtkRenderer = self.vmtkRenderer
surfaceViewer.Surface = self.InputTraces
surfaceViewer.ArrayName = self.ArrayName
surfaceViewer.ColorMap = self.ColorMap
surfaceViewer.NumberOfColors = self.NumberOfColors
surfaceViewer.Execute()
if self.ColorMap == 'grayscale':
lut = surfaceViewer.Actor.GetMapper().GetLookupTable()
lut.SetNumberOfTableValues(self.NumberOfColors)
lut.SetValueRange(0.0,1.0)
lut.SetSaturationRange(0.0,0.0)
lut.Build()
surfaceViewer.Actor.GetMapper().SetLookupTable(lut)
if self.ColorMap == 'rainbow':
lut = surfaceViewer.Actor.GetMapper().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()
surfaceViewer.Actor.GetMapper().SetLookupTable(lut)
if self.ColorMap == 'blackbody':
lut = surfaceViewer.Actor.GetMapper().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()
surfaceViewer.Actor.GetMapper().SetLookupTable(lut)
if self.ColorMap == 'cooltowarm':
lut = surfaceViewer.Actor.GetMapper().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()
surfaceViewer.Actor.GetMapper().SetLookupTable(lut)
if (self.Legend == 1):
self.ScalarBarActor = vtk.vtkScalarBarActor()
self.ScalarBarActor.SetLookupTable(surfaceViewer.Actor.GetMapper().GetLookupTable())
self.ScalarBarActor.GetLabelTextProperty().ItalicOff()
self.ScalarBarActor.GetLabelTextProperty().BoldOff()
self.ScalarBarActor.GetLabelTextProperty().ShadowOff()
self.ScalarBarActor.SetWidth(0.1)
self.ScalarBarActor.SetHeight(0.6)
self.ScalarBarActor.SetNumberOfLabels(4)
self.ScalarBarActor.SetTitle(self.ArrayName+" ["+self.ArrayUnit+"]")
self.ScalarBarActor.SetLabelFormat('%.2f')
self.vmtkRenderer.Renderer.AddActor(self.ScalarBarActor)
self.Traces = vtk.vtkPolyData()
self.Traces.DeepCopy(self.InputTraces)
self.Traces.GetPointData().SetActiveScalars("IntegrationTime")
timeRange = self.Traces.GetPointData().GetScalars().GetRange(0)
currentCycle = 0
minTime = self.MinTime
currentTime = self.TimeStep
maxTime = self.MaxTime
if (self.ArrayMax == None and self.ArrayName == "Velocity"):
self.ArrayMax = round(self.Traces.GetPointData().GetArray('Speed').GetRange()[1],0)
if self.Method is 'particles':
particleTime = minTime
imageNumber = 0
while particleTime <= maxTime:
contour = vtk.vtkContourFilter()
contour.SetInputData(self.Traces)
i = 0
while i <= currentCycle:
time = minTime + currentTime + (maxTime - minTime) * i
if time < timeRange[0] or time > timeRange[1]:
pass
else:
contour.SetValue(i,time)
i+=1
contour.Update()
surfaceViewer.vmtkRenderer = self.vmtkRenderer
surfaceViewer.Actor.GetProperty().SetPointSize(self.PointSize)
vtk.vtkPolyDataMapper.SafeDownCast(surfaceViewer.Actor.GetMapper()).SetInputConnection(contour.GetOutputPort())
surfaceViewer.Actor.GetMapper().GetLookupTable().SetVectorModeToMagnitude()
surfaceViewer.Actor.GetMapper().SetScalarModeToUsePointFieldData()
surfaceViewer.Actor.GetMapper().SelectColorArray(self.ArrayName)
surfaceViewer.Actor.GetMapper().SetScalarRange([0.0,self.ArrayMax])
surfaceViewer.vmtkRenderer.RenderWindow.Render()
if self.WithScreenshots:
self.Screenshot(surfaceViewer,imageNumber)
particleTime+=self.TimeStep
currentTime+=self.TimeStep
imageNumber+=1
elif self.Method is 'streaklines':
particleTime = minTime
imageNumber = 0
while particleTime <= maxTime:
clip1 = vtk.vtkClipPolyData()
clip1.SetInputData(self.Traces)
clip1.GenerateClipScalarsOff()
clip1.InsideOutOn()
clip2 = vtk.vtkClipPolyData()
clip2.SetInputConnection(clip1.GetOutputPort())
clip2.GenerateClipScalarsOff()
clip2.InsideOutOff()
cyclesPerRange = (int((timeRange[1]-timeRange[0])/(maxTime-minTime))) + 1
cycle = currentCycle % cyclesPerRange
time = minTime + currentTime + (maxTime - minTime) * cycle
streakLineTimeLength = self.StreakLineTimeLength
clip1.SetValue(time)
clip2.SetValue(time - streakLineTimeLength)
clip2.Update()
surfaceViewer.Actor.GetProperty().SetLineWidth(self.LineWidth)
vtk.vtkPolyDataMapper.SafeDownCast(surfaceViewer.Actor.GetMapper()).SetInputConnection(clip2.GetOutputPort())
surfaceViewer.Actor.GetMapper().GetLookupTable().SetVectorModeToMagnitude()
surfaceViewer.Actor.GetMapper().SetScalarModeToUsePointFieldData()
surfaceViewer.Actor.GetMapper().SelectColorArray(self.ArrayName)
surfaceViewer.Actor.GetMapper().SetScalarRange([0.0,self.ArrayMax])
surfaceViewer.vmtkRenderer = self.vmtkRenderer
surfaceViewer.vmtkRenderer.RenderWindow.Render()
if self.WithScreenshots:
self.Screenshot(surfaceViewer,imageNumber)
particleTime+=self.TimeStep
currentTime+=self.TimeStep
imageNumber+=1
else:
self.PrintError('Error: pathlineanimator method not supported.')
if __name__=='__main__':
main = pypes.pypeMain()
main.Arguments = sys.argv
main.Execute()
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