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

[Alexandre DARRAU]

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
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>>
>>
>
>
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> Unpaid intern in BillsBasement at noware dot com
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