[vtkusers] Actor color not changing with ThinkpLAteSplineTransformFilter

[Jothy]

Pass the output through a trianglr filterand then add to actor.

Cheers,

Jothy

On Tue, Aug 24, 2010 at 4:54 PM, Jothy <jothybasu at gmail.com> wrote:

> Hi all,
>
> Could anyone turn the black sphere into some other color!!
>
> Should I specify anythging to the DataSetMapper?
>
> Here is the code
>
> import vtk
> import numpy as np
>
> def CreateSphere(Theta,Phi,Radius):
>     sphere=vtk.vtkSphereSource()
>     sphere.SetThetaResolution(Theta)
>     sphere.SetPhiResolution(Phi)
>     sphere.SetRadius(Radius)
>     #sphere.SetCenter(0,0,0)
>     return sphere.GetOutput()
>
>
> CTV=CreateSphere(100,100,20)
> b=CTV.GetBounds()#CTVBounds
> SourcePoints=vtk.vtkPoints()
> SourcePoints.SetNumberOfPoints(8)
> SourcePoints.SetPoint( 0, b[0], b[3], b[5])
> SourcePoints.SetPoint( 1, b[1], b[3], b[5])
> SourcePoints.SetPoint( 2, b[0], b[3], b[4])
> SourcePoints.SetPoint( 3, b[1], b[3], b[4])
> SourcePoints.SetPoint( 4, b[0], b[2], b[5])
> SourcePoints.SetPoint( 5, b[1], b[2], b[5])
> SourcePoints.SetPoint( 6, b[0], b[2], b[4])
> SourcePoints.SetPoint( 7, b[1], b[2], b[4])
>
>
> TargetPoints=vtk.vtkPoints()
> TargetPoints.SetNumberOfPoints(8)
> xm,ym,zm,xp,yp,zp=10,10,10,20,20,20
> TargetPoints.SetPoint( 0, b[0]+xm, b[3]+yp, b[5]+zp )
> TargetPoints.SetPoint( 1, b[1]+xp, b[3]+yp, b[5]+zp )
> TargetPoints.SetPoint( 2, b[0]+xm, b[3]+yp, b[4]+zm )
> TargetPoints.SetPoint( 3, b[1]+xp, b[3]+yp, b[4]+zm )
> TargetPoints.SetPoint( 4, b[0]+xm, b[2]+ym, b[5]+zp )
> TargetPoints.SetPoint( 5, b[1]+xp, b[2]+ym, b[5]+zp )
> TargetPoints.SetPoint( 6, b[0]+xm, b[2]+ym, b[4]+zm )
> TargetPoints.SetPoint( 7, b[1]+xp, b[2]+ym, b[4]+zm )
>
>
>
> ThinPlateTransform=vtk.vtkThinPlateSplineTransform()
> ThinPlateTransform.SetSourceLandmarks(SourcePoints)
> ThinPlateTransform.SetTargetLandmarks(TargetPoints)
> ThinPlateTransform.SetBasisToR2LogR()
>
> GeneralTransform=vtk.vtkGeneralTransform()
> GeneralTransform.SetInput(ThinPlateTransform )
> #GeneralTransform.Concatenate(ThinPlateTransform.GetInverse())
> #GeneralTransform.Concatenate(ThinPlateTransform)
>
> TransformFilter = vtk.vtkTransformPolyDataFilter()
> TransformFilter.SetInput(CTV)
> TransformFilter.SetTransform(GeneralTransform )
>
> CTV.Modified()
> ThinPlateTransform.Modified()
>
> Mapper1=vtk.vtkDataSetMapper()
> Mapper1.SetInputConnection(TransformFilter.GetOutputPort())
>
> Mapper2=vtk.vtkDataSetMapper()
> Mapper2.SetInput(CTV)
>
>
> Actor1=vtk.vtkActor()
> Actor1.GetProperty().SetColor(1,1,0)
> Actor1.SetMapper(Mapper1)
>
>
> Actor2=vtk.vtkActor()
> Actor2.GetProperty().SetColor(1,1,0)
> Actor2.SetMapper(Mapper2)
>
> #Create a renderer, render window, and interactor
> renderer =vtk.vtkRenderer();
> renderWindow =vtk.vtkRenderWindow();
> renderWindow.AddRenderer(renderer);
> renderWindowInteractor =vtk.vtkRenderWindowInteractor();
> renderWindowInteractor.SetRenderWindow(renderWindow);
>
> #Add the actor to the scene
> renderer.AddActor(Actor1);
> renderer.AddActor(Actor2);
> renderer.SetBackground(1,1,1); # Background color white
>
> #Render and interact
> renderWindow.Render();
> renderWindowInteractor.Start();
>
>
> Many thanks!
>
> Jothy
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