[Paraview] one 3d model transparent color + one 3d model normal color for vrml

Sebastien Jourdain sebastien.jourdain at kitware.com
Tue Jun 12 15:59:59 EDT 2012 

If you open the VRML file that you generated you will see inside
something like that:

material Material {
   ambientIntensity 0
   diffuseColor 1 1 1
   specularColor 0 0 0
   shininess 0.0078125
   transparency 0
}

just replace "transparency 0" by "transparency 0.5"

Does that make sense to you now ?

Seb

On Tue, Jun 12, 2012 at 3:50 PM, Chris <chris.schweighofer at gmx.net> wrote:
> Hello Sebastien,
>
> what do you mean with edit a text file? Can you give an example?
>
> Thx,
> Chris
>
>> Can't you just edit a text file ? (meaning replacing the opacity
>> inside the VRML file itself by something else ?)
>>
>> Otherwise, you will have to edit the vtkVRMLExporter.cxx file... And
>> find why the opacity is not written properly...
>>
>> Seb
>>
>> On Tue, Jun 12, 2012 at 3:11 PM, Chris <chris.schweighofer at gmx.net> wrote:
>>> At the moment I installed it new and tried it on windows and mac. It´s not working. I also think there is a bug. VTK only saved the data by using a appended dataset. Anyway do you have probably an idea, how I can remove the bug?
>>>
>>> Thx,
>>> Chris
>>>
>>>> VTK format is not storing rendering information, but only data. In
>>>> VRML it is different. I believe it's a bug of the VRML exporter of VTK
>>>> (or it was not a feature of that exporter).
>>>>
>>>> Therefore, the only solution that I see is to either fix the bug or
>>>> change the opacity attribute in the VRML file manually.
>>>>
>>>> Seb
>>>>
>>>> On Tue, Jun 12, 2012 at 1:33 PM, Chris <chris.schweighofer at gmx.net> wrote:
>>>>> Hello Sebastien,
>>>>>
>>>>> thank you very much, I just realized that I can change the color if I click on the solid button.  For the style options like opacity I tried it to but it does not work to save these parameters neither with vtk nor with vrml files.
>>>>> Is there a trick how I can save them?
>>>>> What further possibility exists to modify simple the vrml file for opacity?
>>>>>
>>>>> Thx,
>>>>> Chris
>>>>>> Hello Chris,
>>>>>>
>>>>>> I don't understand how you can't choose any color that you want.
>>>>>> Basically on my Mac, I have access to the 16 Billions choices... Do
>>>>>> you need more ?
>>>>>> For the opacity, scroll down in the display tab and change the opacity slider.
>>>>>>
>>>>>> For the opacity in VRML, I don't know, but I think that should be the
>>>>>> case ? If not, you can simply fix the generated VRML.
>>>>>>
>>>>>> Seb
>>>>>>
>>>>>> On Tue, Jun 12, 2012 at 11:38 AM, Chris <chris.schweighofer at gmx.net> wrote:
>>>>>>> Hello Sebastien,
>>>>>>>
>>>>>>> thx for your help. You are right it works great with a solid color. I only would like to have a bigger selection for them. Cann´t I take a color table? Or can I import colors?
>>>>>>> I tried to add a scalar but the scalar disappears  after the export.
>>>>>>> Is there a opportunity to save the opacity as well in the vrml file?
>>>>>>>
>>>>>>> Have a good day,
>>>>>>> Chris
>>>>>>>
>>>>>>>> What you try to do is the most complex solution, in the case you
>>>>>>>> really need a single mesh node inside your VRML file.
>>>>>>>> If you don't need that, then the actions are load the files, set
>>>>>>>> colors, export and done.
>>>>>>>>
>>>>>>>> Seb
>>>>>>>>
>>>>>>>> Action 1: In the menu: File > Open + In the "Properties" tab click on "Apply
>>>>>>>> Action 2: To change the color, go in the "Display" tab and click on
>>>>>>>> "Color by" = "Solid Color", the "Set Solid Color..." => The color
>>>>>>>> apply to the object that is selected in the pipeline browser.
>>>>>>>> Action 3: In the menu: File > Export + choose the VRML format and you
>>>>>>>> should be done...
>>>>>>>>
>>>>>>>> On Mon, Jun 11, 2012 at 6:31 PM, Chris <chris.schweighofer at gmx.net> wrote:
>>>>>>>>> Thx, I think it would be great in the way you described it. But I am still a
>>>>>>>>> beginner in Paraview and therefore it sounds a bit complicated for me.
>>>>>>>>>
>>>>>>>>> I added the color filter, selected color by scalars and pressed the button
>>>>>>>>> edit color map. There I tried to adjust range, scalars, lookup tables (color
>>>>>>>>> space) and the opacity.
>>>>>>>>> Anyway the scalar does not change and still stays the same. I tried it now
>>>>>>>>> 50 times.
>>>>>>>>>
>>>>>>>>> I would be really happy, if you could tell me what I did wrong?
>>>>>>>>>
>>>>>>>>> Chris
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> What I try to say, is if you load all the files in ParaView and export
>>>>>>>>> the scene as VRML you will have a single VRML file the way you want.
>>>>>>>>> So I'm not sure why this solution doesn't fit your needs.
>>>>>>>>>
>>>>>>>>> Seb
>>>>>>>>>
>>>>>>>>> On Mon, Jun 11, 2012 at 1:51 PM, Christoph Schweigi
>>>>>>>>> <chris.schweighofer at gmx.net> wrote:
>>>>>>>>>
>>>>>>>>> Thx, I want to fuse two structures of radiologic datasets. Both are from
>>>>>>>>> brain vessels. The embeded model is the fluidic pattern (solid color) and
>>>>>>>>> the other outer model is the morphology (transparent with less opacity) one.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Thx,
>>>>>>>>>
>>>>>>>>> Chris
>>>>>>>>>
>>>>>>>>> Ps: I am currently texting from my phone but if u want I can give u
>>>>>>>>> afterwards a link with the datasets?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Am 11.06.2012 um 19:37 schrieb Sebastien Jourdain
>>>>>>>>> <sebastien.jourdain at kitware.com>:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> That's the tricker part, because your scalar + the lookup table will
>>>>>>>>>
>>>>>>>>> determine the color.
>>>>>>>>>
>>>>>>>>> That's also the reason why I asked you why you just export your scene
>>>>>>>>>
>>>>>>>>> in VRML with the correct settings color+opacity of all you objects ?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Do you need them to be defined as a single mesh inside the VRML ?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Seb
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Mon, Jun 11, 2012 at 1:29 PM, Christoph Schweigi
>>>>>>>>>
>>>>>>>>> <chris.schweighofer at gmx.net> wrote:
>>>>>>>>>
>>>>>>>>> Hello Sebastien,
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Thx for the answer, but how could I add a color to each model if I merge it?
>>>>>>>>> Furthermore how could I make one model transparent and one a solid color?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Thx, Chris
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Von meinem iPhone gesendet
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Am 11.06.2012 um 19:21 schrieb Sebastien Jourdain
>>>>>>>>> <sebastien.jourdain at kitware.com>:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> It seems that on of your dataset is a multi block. So before appending
>>>>>>>>>
>>>>>>>>> it you should merge those block in order to make a single dataset.
>>>>>>>>>
>>>>>>>>> Then you should be able to append it.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Mon, Jun 11, 2012 at 10:50 AM, Chris <chris.schweighofer at gmx.net> wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Hello Sebastien,
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> thx for your answer. I tried to do so and tried to save it in a vrml.
>>>>>>>>>
>>>>>>>>> However I have troubles if I import the geometric structure from vtk with
>>>>>>>>>
>>>>>>>>> two colors or if I want to create a geometric structure with two colors.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> The colors stay always the same and if I want to do a appended geometry I
>>>>>>>>>
>>>>>>>>> only get an error message:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> ERROR: In
>>>>>>>>>
>>>>>>>>> /Users/partyd/Kitware/ParaView-3.8/src/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
>>>>>>>>>
>>>>>>>>> line 827
>>>>>>>>>
>>>>>>>>> vtkCompositeDataPipeline (0x30cacf10): Input for connection index 1 on input
>>>>>>>>>
>>>>>>>>> port index 0 for algorithm vtkAppendPolyData(0x3022e260) is of type
>>>>>>>>>
>>>>>>>>> vtkMultiBlockDataSet, but a vtkPolyData is required.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Please can you explain me why that happens?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Thx,
>>>>>>>>>
>>>>>>>>> Chris
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Am 11.06.2012 um 05:42 schrieb Sebastien Jourdain:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Hi Chris,
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> If the point is to have the VRML to contains both, by loading the 2
>>>>>>>>>
>>>>>>>>> objects in the scene, exporting the scene will do the trick.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> If not that will be trickier but still doable. You will need to
>>>>>>>>>
>>>>>>>>> generate a given scalar across the 2 datasets and merge the geometry.
>>>>>>>>>
>>>>>>>>> Then use your custom scalar to apply the right color and opacity
>>>>>>>>>
>>>>>>>>> across the whole geometry.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Seb
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Sun, Jun 10, 2012 at 1:17 PM, Chris <chris.schweighofer at gmx.net> wrote:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Hello people,
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> I would like to know if it is possible to fuse two 3d models, one with a
>>>>>>>>>
>>>>>>>>> solid and one with a transparent color. This dataset should be afterwards
>>>>>>>>>
>>>>>>>>> saved within a vrml file for a rapid prototype printer.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Is this possible?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> How?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Thx,
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Chris
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Powered by www.kitware.com
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Visit other Kitware open-source projects
>>>>>>>>>
>>>>>>>>> at http://www.kitware.com/opensource/opensource.html
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Please keep messages on-topic and check the ParaView Wiki
>>>>>>>>>
>>>>>>>>> at: http://paraview.org/Wiki/ParaView
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
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>>>>>>>>>
>>>>>>>>>
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>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>>
>>>>>>>>> Powered by www.kitware.com
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Visit other Kitware open-source projects at
>>>>>>>>>
>>>>>>>>> http://www.kitware.com/opensource/opensource.html
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Please keep messages on-topic and check the ParaView Wiki at:
>>>>>>>>>
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>>>>>>>>> Follow this link to subscribe/unsubscribe:
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>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>>
>>>>>>>>> Powered by www.kitware.com
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Visit other Kitware open-source projects at
>>>>>>>>> http://www.kitware.com/opensource/opensource.html
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Please keep messages on-topic and check the ParaView Wiki at:
>>>>>>>>> http://paraview.org/Wiki/ParaView
>>>>>>>>>
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>>>>>>>>> Follow this link to subscribe/unsubscribe:
>>>>>>>>>
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>>>>>>>>>
>>>>>>>>> Powered by www.kitware.com
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Visit other Kitware open-source projects at
>>>>>>>>> http://www.kitware.com/opensource/opensource.html
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Please keep messages on-topic and check the ParaView Wiki at:
>>>>>>>>> http://paraview.org/Wiki/ParaView
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>>>>>>>>>
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>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Powered by www.kitware.com
>>>>>>>>>
>>>>>>>>> Visit other Kitware open-source projects at
>>>>>>>>> http://www.kitware.com/opensource/opensource.html
>>>>>>>>>
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>>>>>>>>> http://paraview.org/Wiki/ParaView
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>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Powered by www.kitware.com
>>>>>>>
>>>>>>> Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
>>>>>>>
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>>>>>>>
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>>>>>
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>>>>> Powered by www.kitware.com
>>>>>
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>>>>>
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>>>>>
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>
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