[vtkusers] Using two different colors on top/bottom cell sides

[Bill Lorensen]

Yopu may have to offset one grid a bit. Depends on the geometry.



On Tue, Dec 10, 2013 at 4:05 PM, Alexandre DARRAU <alex.darrau at gmail.com>wrote:

> Just to be sure i understood.  To perform that,  will I need to define 2
> UnstructuredGrid ? I will have 2 cells at the same position with 2
> different color, do you think it will work ?
>
>
> 2013/12/10 Bill Lorensen <bill.lorensen at gmail.com>
>
>> Great. So I think you need two datasets. Sounds like a cool application.
>>
>>
>>
>>
>> On Tue, Dec 10, 2013 at 3:46 PM, Alexandre DARRAU <alex.darrau at gmail.com>wrote:
>>
>>> Sure. What I am currently doing is generating the geometrical model of
>>> my thermal system.  I used an UnstructuredGrid object to perform it. Each
>>> cell corresponds to a thermal node with material and thermal coating
>>> properties.
>>>
>>> Most often, the thermal coating is the same on the front face and the
>>> back face of a cell. Now, i would like to take into account that a thermal
>>> coating (represented with red color) can be applied on the front face,
>>> another one the backface (blue color) and visualize it on VTK (You can
>>> image a Satellite wall with MLI on a side and Carbon on the other side).
>>>
>>> Thank you for your help and your answer
>>>
>>>
>>>
>>> 2013/12/10 Bill Lorensen <bill.lorensen at gmail.com>
>>>
>>>> VTK cannot do this with one dataset. You can specify a backface
>>>> property, but that would only permit one color for the front and back of
>>>> the dataset.
>>>>
>>>> It seems you want a different colormap for each side of the data. The
>>>> only way to do this would be to have two separte datasets.
>>>>
>>>> The image you posted is very simple. Can you describe your real-world
>>>> application?
>>>>
>>>>
>>>>
>>>> On Tue, Dec 10, 2013 at 3:14 PM, Alexandre DARRAU <
>>>> alex.darrau at gmail.com> wrote:
>>>>
>>>>> This is the first time i am trying to insert a picture, i hope it will
>>>>> work:
>>>>>
>>>>> [image: Images intégrées 1]
>>>>>
>>>>>
>>>>> Does this image help ?
>>>>>
>>>>> Thank you
>>>>>
>>>>>
>>>>> 2013/12/10 Bill Lorensen <bill.lorensen at gmail.com>
>>>>>
>>>>>> Can you show an image that illustrates what you want?
>>>>>>
>>>>>>
>>>>>> On Tue, Dec 10, 2013 at 2:42 PM, Alexandre DARRAU <
>>>>>> alex.darrau at gmail.com> wrote:
>>>>>> > Thanks for your reply. This is not what i mean. I would like to
>>>>>> color the
>>>>>> > cell front side in red and the cell back side in blue, is it
>>>>>> possible ?
>>>>>> >
>>>>>> >
>>>>>> > 2013/12/10 Bill Lorensen <bill.lorensen at gmail.com>
>>>>>> >>
>>>>>> >> If you mean a band of red and a band of blue (not a conitnuous
>>>>>> >> transition), then split the each cell into two cells, color one
>>>>>> red,
>>>>>> >> the other blue.
>>>>>> >>
>>>>>> >>
>>>>>> >>
>>>>>> >> On Tue, Dec 10, 2013 at 1:28 PM, daralex <alex.darrau at gmail.com>
>>>>>> wrote:
>>>>>> >> > Dear all,
>>>>>> >> >
>>>>>> >> > I would have a question regarding VTK.
>>>>>> >> > I have an unstructured grid where i am trying to plot a
>>>>>> temperature
>>>>>> >> > distribution on. I manage to get one color per cell suing lookup
>>>>>> table
>>>>>> >> > but i
>>>>>> >> > would like to color the top of one cell in blue and the bottom
>>>>>> in red,
>>>>>> >> > do
>>>>>> >> > you know if it is possible using VTK ? Can you explain me how to
>>>>>> deal
>>>>>> >> > with
>>>>>> >> > it ?
>>>>>> >> >
>>>>>> >> > Thank you in advance for your answer
>>>>>> >> >
>>>>>> >> > Alex
>>>>>> >> >
>>>>>> >> >
>>>>>> >> >
>>>>>> >> > --
>>>>>> >> > View this message in context:
>>>>>> >> >
>>>>>> http://vtk.1045678.n5.nabble.com/Using-two-different-colors-on-top-bottom-cell-sides-tp5724946.html
>>>>>> >> > Sent from the VTK - Users mailing list archive at Nabble.com.
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>>>>>> >
>>>>>>
>>>>>>
>>>>>>
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>>>>>
>>>>>
>>>>
>>>>
>>>> --
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>>>>
>>>
>>>
>>
>>
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>> Unpaid intern in BillsBasement at noware dot com
>>
>
>


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