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lights.py
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lights.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#Lights is a visualization and gui library written in python
#Authors: Eleftherios Garyfallidis
'''
Starting Remarks
For visualization import lights.py
For the moment just write your functions inside lights.py under ian_???
So, for plotting things available are:
a) scatterplot
b) surfaceplot
c) gridaxes
Some primitives are: line, arrow, point, label, plane
General idea
a) AppThread(ren)
where ren is a vtk.vtkRenderer()
b) Add actors to the renderer
where actors are objects with surface, position, orientation info in the 3D space.
ren.AddActor(act)
c) The primitives always return actors or assemblies of actors
See testline for example
d) The plot functions like surfaceplot return a new renderer if not given as input or the same renderer
updated if it given as input
Testplot has an example of animation by moving the camera.
'''
try:
import vtk
from vtk.util.colors import *
except:
print('VTK is not installed.')
try:
import wx
except:
print('Wx is not installed.')
try:
import wxVTKRenderWindowInteractor as wxvi
except:
print('No wxVTKRenderWindowInteractor.')
try:
import numpy as np
except:
print('Numpy is not installed.')
try:
import scipy as sp
except:
print('Scipy is not installed.')
import platform
import sys
import threading
import time
ID_ABOUT = 101
ID_EXIT = 102
class shared():
def __init__(self):
self.widget=None
self.ren=None
self.ren_list=[]
sh=shared()
class Interactor(wxvi.wxVTKRenderWindowInteractor):
def __init__(self, parent, ID, *args, **kw):
self.parent =parent
wxvi.wxVTKRenderWindowInteractor.__init__(self,parent,ID, *args,**kw)
self.picker = vtk.vtkCellPicker()
self.picker.AddObserver("EndPickEvent", self.annotatePick)
self.AddObserver("ExitEvent",self.exitEvent)
self.SetPicker(self.picker)
def annotatePick(object, event):
if picker.GetCellId() < 0:
print('No object')
print(np.round(picker.GetSelectionPoint(), decimals=2))
else:
print('Object Found')
print(np.round(picker.GetSelectionPoint(), decimals=2))
print(np.round(picker.GetPickPosition(), decimals=2))
print(np.round(picker.GetActors().GetLastActor().GetPosition(), decimals=2))
def exitEvent(object,event,f):
#self.parent.Close()
pass
class FrameMenu(wx.Frame):
def __init__(self, parent, ID, title,width,height):
wx.Frame.__init__(self, parent, ID, title,
wx.DefaultPosition, wx.Size(width, height))
self.CreateStatusBar()
self.SetStatusText("This is the statusbar")
menu = wx.Menu()
menu.Append(ID_ABOUT, "&About",
"More information about this program")
menu.AppendSeparator()
menu.Append(ID_EXIT, "E&xit", "Terminate the program")
menuBar = wx.MenuBar()
menuBar.Append(menu, "&File");
self.SetMenuBar(menuBar)
wx.EVT_MENU(self, ID_ABOUT, self.OnAbout)
wx.EVT_MENU(self, ID_EXIT, self.TimeToQuit)
def OnAbout(self, event):
dlg = wx.MessageDialog(self, "This sample program shows off\n"
"frames, menus, statusbars, and this\n"
"message dialog.",
"About Me", wx.OK | wx.ICON_INFORMATION)
dlg.ShowModal()
dlg.Destroy()
def TimeToQuit(self, event):
self.Close(1)
def NewKeyPress(obj,event):
print('Inside NewKeyPress')
key = obj.GetKeySym()
if key == "o":
print('o')
#obj.InvokeEvent("DeleteAllObjects")
#sys.exit()
elif key == "s":
print('s')
#ren.GetActiveCamera().Azimuth(40)
#sh.widget.Enable(1)
elif key =="t":
print('t')
#ren.GetActiveCamera().Azimuth(-40)
#sh.widget.Enable(1)
class FrameVtkMinimal(wx.Frame):
def __init__(self, parent, ID,ren, title,width,height):
wx.Frame.__init__(self, parent, ID, title,wx.DefaultPosition, wx.Size(width, height))
widget = wxvi.wxVTKRenderWindowInteractor(self, -1)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(widget, 1, wx.EXPAND)
self.SetSizer(sizer)
self.Layout()
#widget.SetInteractorStyle(None)
widget.Enable(1)
widget.AddObserver("ExitEvent", lambda o,e,f=self: f.Close())
#widget._Iren.AddObserver("NewKeyPressEvent",NewKeyPress)
#widget.AddObserver("KeyPressEvent", Keypress)
#widget.Enable(1)
widget.GetRenderWindow().AddRenderer(ren)
sh.widget=widget
'''
wx.Frame.__init__(self, parent, ID, title,wx.DefaultPosition, wx.Size(width, height))
widget = Interactor(self,-1)
sizer = wx.BoxSizer(wx.VERTICAL)
sizer.Add(widget, 1, wx.EXPAND)
self.SetSizer(sizer)
self.Layout()
widget.Enable(1)
widget.GetRenderWindow().AddRenderer(ren)
'''
def FrameSelector(frame_type,parent,ID,ren,title,width,height):
'''
frame_type 0: FrameVtkMinimal
frame_type 1: FrameMenu
'''
if frame_type==0:
frame=FrameVtkMinimal(parent,ID,ren,title,width,height)
return frame
else:
frame=FrameMenu(parent,ID, title,width,height)
return frame
class FrameThread(threading.Thread):
def __init__(self,frame_type,title="Second Frame",width=300,height=300,autoStart=1,ren=None):
threading.Thread.__init__(self)
#self.setDaemon(1)
self.start_orig = self.start
self.start = self.start_local
self.frame = None
self.frame_type=frame_type
self.ren = ren
self.title = title
self.width=width
self.height=height
self.lock = threading.Lock()
self.lock.acquire()
if autoStart:
self.start()
def run(self):
print('Inside run')
frame=FrameSelector(self.frame_type,None,-1,self.ren,self.title,self.width,self.height)
frame.Show(1)
self.frame = frame
self.lock.release()
def start_local(self):
self.start_orig()
self.lock.acquire()
class AppThread(threading.Thread):
def __init__(self,frame_type=0,title="Lights",width=300,height=300,autoStart=1,ren=None):
threading.Thread.__init__(self)
#self.setDaemon(1)
self.start_orig = self.start
self.start = self.start_local
self.frame = None
self.frame_type=frame_type
self.ren = ren
self.title = title
self.width=width
self.height=height
self.lock = threading.Lock()
self.lock.acquire()
if autoStart:
self.start()
def run(self):
print('Inside run')
app = wx.PySimpleApp()
frame=FrameSelector(self.frame_type,None,-1,self.ren,self.title,self.width,self.height)
frame.Show(1)
self.frame = frame
self.lock.release()
print('Before Mainloop')
app.MainLoop()
print('After Mainloop')
def start_local(self):
self.start_orig()
self.lock.acquire()
class NoAppThread():
def __init__(self,frame_type,title="Lights",width=300,height=300,autoStart=1,ren=None):
self.ren=ren
self.title=title
self.width=width
self.height=height
self.frame_type=frame_type
app = wx.PySimpleApp()
frame=FrameSelector(self.frame_type,None,-1,self.ren,self.title,self.width,self.height)
frame.Show(1)
self.frame = frame
print('NoAppThread - MainLoop Started...')
app.MainLoop()
print('NoAppThread - MainLoop Ended.')
'''
def runVideo(vidSeq):
"""The video sequence function, vidSeq, is run on a separate
thread to update the GUI. The vidSeq should have one argument for
SetData"""
app = wx.PySimpleApp()
frame = ImageFrame(None)
frame.SetSize((800, 600))
frame.Show(True)
myImageIn = ImageIn(frame.window)
t = threading.Thread(target=vidSeq, args=(myImageIn.SetData,))
t.setDaemon(1)
t.start()
app.MainLoop()
'''
def renderer():
return vtk.vtkRenderer()
def cone(position=(0,0,0),height=1):
cone = vtk.vtkConeSource()
cone.SetHeight(height)
conem = vtk.vtkPolyDataMapper()
conem.SetInput(cone.GetOutput())
conea = vtk.vtkActor()
conea.SetMapper(conem)
conea.SetPosition(position)
return conea
def triangulate(points,color=(1,0,0),opacity=1):
'''
Input: a numpy array points with size Nx3 whith the x,y,z positions of the vertices
Output: an actor with the 3d triangulation result
'''
print('points.shape',points.shape[0])
if points.shape[0]<5:
print('Warning:Possibly not enough points are given...')
max=points.max(axis=0)
min=points.min(axis=0)
print(max)
print(min)
math = vtk.vtkMath()
pointsv = vtk.vtkPoints()
cnt=0
# *vec
#for cnt, vec in enumerate(points)
# p.InsertPoint(cnt, *vec)
for vec in points:
pointsv.InsertPoint(cnt,vec[0],vec[1],vec[2])
cnt+=1
profile = vtk.vtkPolyData()
profile.SetPoints(pointsv)
# Delaunay3D is used to triangulate the points. The Tolerance is the
# distance that nearly coincident points are merged
# together. (Delaunay does better if points are well spaced.) The
# alpha value is the radius of circumcircles, circumspheres. Any mesh
# entity whose circumcircle is smaller than this value is output.
delny = vtk.vtkDelaunay3D()
delny.SetInput(profile)
#below options for vtkDelaunay2D
#delny.SetTolerance(0.01)
#delny.SetAlpha(1)
#delny.BoundingTriangulationOff()
# Shrink the result to help see it better.
'''
shrink = vtk.vtkShrinkFilter()
shrink.SetInputConnection(delny.GetOutputPort())
shrink.SetShrinkFactor(0.9)
'''
map = vtk.vtkDataSetMapper()
#map.SetInputConnection(shrink.GetOutputPort())
map.SetInputConnection(delny.GetOutputPort())
triangulation = vtk.vtkActor()
triangulation.SetMapper(map)
triangulation.GetProperty().SetColor(color)
triangulation.GetProperty().SetOpacity(opacity)
return triangulation
def torus(position=(0,0,0),scalex=1,scaley=1,scalez=1,toruson=1,thickness=0.01):
torus = vtk.vtkSuperquadricSource()
#tube.SetCenter(position)
torus.SetThickness(thickness)
torus.SetScale(scalex,scaley,scalez)
torus.SetPhiResolution(100)
torus.SetThetaResolution(100)
torus.SetPhiRoundness(1)
torus.SetThetaRoundness(1)
if toruson:
torus.ToroidalOn()
torusm = vtk.vtkPolyDataMapper()
torusm.SetInput(torus.GetOutput())
torusa = vtk.vtkActor()
torusa.SetMapper(torusm)
torusa.SetPosition(position)
return torusa
def tube(point1=(0,0,0),point2=(1,0,0),color=(1,0,0),opacity=1,radius=0.1,capson=1,specular=1,sides=8):
'''
Wrap a tube around a line connecting point1 with point2 with a specific radius
'''
points = vtk.vtkPoints()
points.InsertPoint(0,point1[0],point1[1],point1[2])
points.InsertPoint(1,point2[0],point2[1],point2[2])
lines=vtk.vtkCellArray()
lines.InsertNextCell(2)
lines.InsertCellPoint(0)
lines.InsertCellPoint(1)
profileData=vtk.vtkPolyData()
profileData.SetPoints(points)
profileData.SetLines(lines)
# Add thickness to the resulting line.
profileTubes = vtk.vtkTubeFilter()
profileTubes.SetNumberOfSides(sides)
profileTubes.SetInput(profileData)
profileTubes.SetRadius(radius)
if capson:
profileTubes.SetCapping(1)
else:
profileTubes.SetCapping(0)
profileMapper = vtk.vtkPolyDataMapper()
profileMapper.SetInputConnection(profileTubes.GetOutputPort())
profile = vtk.vtkActor()
profile.SetMapper(profileMapper)
profile.GetProperty().SetDiffuseColor(color)
profile.GetProperty().SetSpecular(specular)
profile.GetProperty().SetSpecularPower(30)
profile.GetProperty().SetOpacity(opacity)
return profile
def pipeplot(ren,x,y,z,u,v,w,r,colr,colg,colb,opacity,texton=1):
'''
Create a pipe or many pipes connecting [x_i,y_i,z_i] with [u_i,v_i,w_i] and radius r_i,
See testpipeplot for an example.
'''
try:
no_points=len(u)
except:
no_points=1
ass=vtk.vtkPropAssembly()
ass2=vtk.vtkPropAssembly()
if no_points>1:
maxr=np.max(r)
for i in xrange(no_points):
point1=np.array([x[i],y[i],z[i]])
point2=np.array([u[i],v[i],w[i]])
color=(colr[i],colg[i],colb[i])
opac=opacity[i]
#if r[i]>rthr:
#
#if r[i]==maxr:
ass.AddPart(tube(point1,point2,color=color,opacity=opac,radius=r[i],capson=1) )
#ass.AddPart(text3d(text=str(r),pos=(point2[0],point2[1],point2[2]),scale=(0.01,0.01,0.01)))
if texton:
ass2.AddPart(label(ren=ren,text=str(r[i]),pos=(point2[0],point2[1],point2[2]),scale=(0.05,0.05,0.05)))
ass2.AddPart(label(ren=ren,text=str(r[i]),pos=(point1[0],point1[1],point1[2]),scale=(0.05,0.05,0.05)))
else:
point1=np.array([x,y,z])
point2=np.array([u,v,w])
color=(colr,colg,colb)
opac=opacity
ass.AddPart(tube(point1,point2,color=color,opacity=opac,radius=r,capson=1) )
if texton:
ass2.AddPart(label(ren=ren,text=str(r),pos=(point2[0],point2[1],point2[2]),scale=(0.05,0.05,0.05)))
ass2.AddPart(label(ren=ren,text=str(r),pos=(point1[0],point1[1],point1[2]),scale=(0.05,0.05,0.05)))
ren.AddActor(ass)
return
def cube(position=(0,0,0),X=1,Y=1,Z=1):
cube = vtk.vtkCubeSource()
cube.SetXLength(X)
cube.SetYLength(Y)
cube.SetZLength(Z)
cubem = vtk.vtkPolyDataMapper()
cubem.SetInput(cube.GetOutput())
cubea = vtk.vtkActor()
cubea.SetMapper(cubem)
cubea.SetPosition(position)
return cubea
def cube(Xmin=-1,Xmax=1,Ymin=-1,Ymax=1,Zmin=-1,Zmax=1,color=(0,0.2,1),opacity=0.4):
cube = vtk.vtkCubeSource()
cube.SetBounds(Xmin,Xmax,Ymin,Ymax,Zmin,Zmax)
#cube.SetXLength(X)
#cube.SetYLength(Y)
#cube.SetZLength(Z)
cubem = vtk.vtkPolyDataMapper()
cubem.SetInput(cube.GetOutput())
cubea = vtk.vtkActor()
cubea.SetMapper(cubem)
#cubea.SetPosition(position)
cubea.GetProperty().SetColor(color)
cubea.GetProperty().SetOpacity(opacity)
return cubea
def point(position=(0,0,0),radius=0.1,thetares=8,phires=8,color=(0,0,1),opacity=1):
'''
Adds a spherical point
'''
sphere = vtk.vtkSphereSource()
sphere.SetRadius(radius)
sphere.SetThetaResolution(thetares)
sphere.SetPhiResolution(phires)
spherem = vtk.vtkPolyDataMapper()
spherem.SetInput(sphere.GetOutput())
spherea = vtk.vtkActor()
spherea.SetMapper(spherem)
spherea.SetPosition(position)
spherea.GetProperty().SetColor(color)
spherea.GetProperty().SetOpacity(opacity)
return spherea
def dots(points,color=(1,0,0),opacity=1):
'''
Adds one or more 3d dots(pixels) returns one actor handling all the points
'''
points_no=len(points)
#print points_no
polyVertexPoints = vtk.vtkPoints()
polyVertexPoints.SetNumberOfPoints(points_no)
aPolyVertex = vtk.vtkPolyVertex()
aPolyVertex.GetPointIds().SetNumberOfIds(points_no)
cnt=0
for point in points:
polyVertexPoints.InsertPoint(cnt, point[0], point[1], point[2])
aPolyVertex.GetPointIds().SetId(cnt, cnt)
cnt+=1
aPolyVertexGrid = vtk.vtkUnstructuredGrid()
aPolyVertexGrid.Allocate(1, 1)
aPolyVertexGrid.InsertNextCell(aPolyVertex.GetCellType(), aPolyVertex.GetPointIds())
aPolyVertexGrid.SetPoints(polyVertexPoints)
aPolyVertexMapper = vtk.vtkDataSetMapper()
aPolyVertexMapper.SetInput(aPolyVertexGrid)
aPolyVertexActor = vtk.vtkActor()
aPolyVertexActor.SetMapper(aPolyVertexMapper)
aPolyVertexActor.GetProperty().SetColor(color)
aPolyVertexActor.GetProperty().SetOpacity(opacity)
#ren=vtk.vtkRenderer()
#ren.AddActor(aPixelActor)
#ren.AddActor(aPolyVertexActor)
#ap=AppThread(ren=ren)
#del polyVertexPoints
#del aPolyVertex
#del aPolyVertexGrid
#del aPolyVertexMapper
return aPolyVertexActor
def sphere(position=(0,0,0),radius=0.5,thetares=8,phires=8,color=(0,0,1),opacity=1,tessel=0):
sphere = vtk.vtkSphereSource()
sphere.SetRadius(radius)
sphere.SetLatLongTessellation(tessel)
sphere.SetThetaResolution(thetares)
sphere.SetPhiResolution(phires)
spherem = vtk.vtkPolyDataMapper()
spherem.SetInput(sphere.GetOutput())
spherea = vtk.vtkActor()
spherea.SetMapper(spherem)
spherea.SetPosition(position)
spherea.GetProperty().SetColor(color)
spherea.GetProperty().SetOpacity(opacity)
return spherea
def ellipsoid(R=sp.array([[2, 0, 0],[0, 1, 0],[0, 0, 1] ]),position=(0,0,0),thetares=20,phires=20,color=(0,0,1),opacity=1,tessel=0):
'''
Stretch a unit sphere to make it an ellipsoid under a 3x3 translation matrix R
R=sp.array([[2, 0, 0],
[0, 1, 0],
[0, 0, 1] ])
'''
Mat=sp.identity(4)
Mat[0:3,0:3]=R
'''
Mat=sp.array([[2, 0, 0, 0],
[0, 1, 0, 0],
[0, 0, 1, 0],
[0, 0, 0, 1] ])
'''
mat=vtk.vtkMatrix4x4()
for i in sp.ndindex(4,4):
mat.SetElement(i[0],i[1],Mat[i])
radius=1
sphere = vtk.vtkSphereSource()
sphere.SetRadius(radius)
sphere.SetLatLongTessellation(tessel)
sphere.SetThetaResolution(thetares)
sphere.SetPhiResolution(phires)
trans=vtk.vtkTransform()
trans.Identity()
#trans.Scale(0.3,0.9,0.2)
trans.SetMatrix(mat)
trans.Update()
transf=vtk.vtkTransformPolyDataFilter()
transf.SetTransform(trans)
transf.SetInput(sphere.GetOutput())
transf.Update()
spherem = vtk.vtkPolyDataMapper()
spherem.SetInput(transf.GetOutput())
spherea = vtk.vtkActor()
spherea.SetMapper(spherem)
spherea.SetPosition(position)
spherea.GetProperty().SetColor(color)
spherea.GetProperty().SetOpacity(opacity)
#spherea.GetProperty().SetRepresentationToWireframe()
return spherea
def line(point1=(0,0,0),point2=(1,0,0),color=(1,0,0),res=1,opacity=1,return_polydata=0):
'''
Deprecated
'''
line=vtk.vtkLineSource()
line.SetResolution(res)
line.SetPoint1(point1)
line.SetPoint2(point2)
line.Update()
if return_polydata:
return line.GetOutput()
else:
linem = vtk.vtkPolyDataMapper()
linem.SetInput(line.GetOutput())
linea = vtk.vtkActor()
linea.SetMapper(linem)
linea.GetProperty().SetColor(color)
linea.GetProperty().SetOpacity(opacity)
return linea
def polyline(points,color=(1,0,0),opacity=1):
#'''
points_no=len(points)
#print points_no
polyLinePoints = vtk.vtkPoints()
polyLinePoints.SetNumberOfPoints(points_no)
aPolyLine = vtk.vtkPolyLine()
aPolyLine.GetPointIds().SetNumberOfIds(points_no)
cnt=0
for point in points:
#print point
polyLinePoints.InsertPoint(cnt, point[0], point[1], point[2])
aPolyLine.GetPointIds().SetId(cnt, cnt)
cnt+=1
aPolyLineGrid = vtk.vtkUnstructuredGrid()
aPolyLineGrid.Allocate(1, 1)
aPolyLineGrid.InsertNextCell(aPolyLine.GetCellType(), aPolyLine.GetPointIds())
aPolyLineGrid.SetPoints(polyLinePoints)
aPolyLineMapper = vtk.vtkDataSetMapper()
aPolyLineMapper.SetInput(aPolyLineGrid)
aPolyLineActor = vtk.vtkActor()
aPolyLineActor.SetMapper(aPolyLineMapper)
aPolyLineActor.GetProperty().SetColor(color)
aPolyLineActor.GetProperty().SetOpacity(opacity)
#aPolyLineActor.AddPosition(2, 0, 4)
#aPolyLineActor.GetProperty().SetDiffuseColor(1, 1, 1)
return aPolyLineActor
def trajectories(trajs,traj_thr=0,color=(1,0,0),opacity=1,res=1):
'''
trajs is a list of list of tuples with 3 elements (x,y,z coordinates) i.e. a list of trajectories
returns only one actor handling all trajectories
'''
trajs_no=len(trajs)
cnt = 0
apd=vtk.vtkAppendPolyData()
for traj in trajs:
traj_no=len(traj)
if traj_no > traj_thr:
for i in xrange(traj_no-1):
line=vtk.vtkLineSource()
line.SetResolution(res)
line.SetPoint1(traj[i])
line.SetPoint2(traj[i+1])
#line.Update()
apd.AddInput(line.GetOutput())
#apd.AddInput(line(point1=traj[i],point2=traj[i+1],return_polydata=1))
del line
cnt+=1
if cnt % 1000 ==0:
print round(100*cnt / float(trajs_no)) , '%'
map = vtk.vtkPolyDataMapper()
map.SetInput(apd.GetOutput())
trajsActor = vtk.vtkActor()
trajsActor.SetMapper(map)
trajsActor.GetProperty().SetColor(color)
trajsActor.GetProperty().SetOpacity(opacity)
return trajsActor
def trajectories_fast():
points= vtk.vtkPoints()
lines=vtk.vtkCellArray()
linescalars=vtk.vtkFloatArray()
lookuptable=vtk.vtkLookupTable()
scalar=1.0
curPointID=0
scalarmin=0.0
scalarmax=1.0
linewidth=1
#Plot line
m=(0.0,0.0,0.0)
n=(1.0,0.0,0.0)
for i in xrange(6000000):
m=sp.rand(3)
n=sp.rand(3)
scalar=sp.rand(1)
linescalars.SetNumberOfComponents(1)
points.InsertNextPoint(m)
linescalars.InsertNextTuple1(scalar)
points.InsertNextPoint(n)
linescalars.InsertNextTuple1(scalar)
lines.InsertNextCell(2)
lines.InsertCellPoint(curPointID)
lines.InsertCellPoint(curPointID+1)
curPointID+=2
##
polydata = vtk.vtkPolyData()
polydata.SetPoints(points)
polydata.SetLines(lines)
polydata.GetPointData().SetScalars(linescalars)
##
mapper = vtk.vtkPolyDataMapper()
mapper.SetInput(polydata)
mapper.SetLookupTable(lookuptable)
mapper.SetColorModeToMapScalars()
mapper.SetScalarRange(scalarmin,scalarmax)
mapper.SetScalarModeToUsePointData()
actor=vtk.vtkActor()
actor.SetMapper(mapper)
actor.GetProperty().SetLineWidth(linewidth)
return actor
def trajectories_fast(traj):
points= vtk.vtkPoints()
lines=vtk.vtkCellArray()
linescalars=vtk.vtkFloatArray()
lookuptable=vtk.vtkLookupTable()
scalar=1.0
curPointID=0
scalarmin=0.0
scalarmax=1.0
linewidth=1
#Plot line
m=(0.0,0.0,0.0)
n=(1.0,0.0,0.0)
'''
for i in xrange(6000000):
m=sp.rand(3)
n=sp.rand(3)
'''
mit=iter(traj)
nit=iter(traj)
nit.next()
while(True):
try:
m=mit.next()
n=nit.next()
scalar=sp.rand(1)
linescalars.SetNumberOfComponents(1)
points.InsertNextPoint(m)
linescalars.InsertNextTuple1(scalar)
points.InsertNextPoint(n)
linescalars.InsertNextTuple1(scalar)
lines.InsertNextCell(2)
lines.InsertCellPoint(curPointID)
lines.InsertCellPoint(curPointID+1)
curPointID+=2
except StopIteration:
print 'Done'
break
##
polydata = vtk.vtkPolyData()
polydata.SetPoints(points)
polydata.SetLines(lines)
polydata.GetPointData().SetScalars(linescalars)
##
mapper = vtk.vtkPolyDataMapper()
mapper.SetInput(polydata)
mapper.SetLookupTable(lookuptable)
mapper.SetColorModeToMapScalars()
mapper.SetScalarRange(scalarmin,scalarmax)
mapper.SetScalarModeToUsePointData()
actor=vtk.vtkActor()
actor.SetMapper(mapper)
actor.GetProperty().SetLineWidth(linewidth)
return actor