[vtkusers] [Java] VTK volume rendering

Aashish Chaudhary aashish.chaudhary at kitware.com
Wed Feb 17 21:20:05 EST 2016


Hi there,


On Wed, Feb 17, 2016 at 8:25 PM, atc1992vtk <atc1992vtk at gmail.com> wrote:

>
> Well as I mention I am using OSX 10.9.5
> Graphics : Intel Iris Pro 1536 MB
> but I am not sure how to check is Opengl2 or Opengl1 base

The VTK version I am using is 6.3.0
>

Since you are using VTK 6.3.0 and unless you change the VTK_BACKEND to
OPENGL2 you are using OPENGL1 backend. Would it be possible for you to
switch to VTK 7.0? or VTK master. Also, You are not using a GPU which will
also affect the performance.


> So *vtkProjectedTetrahedraMapper* should be the right filter?
>
> Here are part of the script i used. The input image is *UnstructuredGrid*
> and I map the output to a Actor. But the result was really to *laggy* can't
> even rotate the object.
> ======================================
> vtkProjectedTetrahedraMapper volumeMapper = new
> vtkProjectedTetrahedraMapper();
> vtkVolume volume = new vtkVolume();
> vtkVolumeProperty volumeProperty = new vtkVolumeProperty();
> volumeProperty.IndependentComponentsOn();
> volumeProperty.DisableGradientOpacityOn();
> volumeProperty.SetInterpolationType(1);
> volumeProperty.SetShade(0);
> volumeProperty.SetAmbient(0.5d);
> volumeProperty.SetDiffuse(0.4d);
> volumeProperty.SetSpecular(0.4d);
> volumeMapper.SetInputData(image);
> volumeMapper.Update();
> ======================================
>
> At the meantime, I got another question.
> From paraview, we can extract color maps into .json file.
> Is it possible to import that to my vtk project? What class should I be
> using to read them or by changing lookuptable? Need some lead on that
> too...
> thx
>
>
>
>
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-- 



*| Aashish Chaudhary | Technical Leader         | Kitware Inc.            *
*| http://www.kitware.com/company/team/chaudhary.html
<http://www.kitware.com/company/team/chaudhary.html>*
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