[Paraview] Show custom cube axes annotations

Mon Nov 19 12:48:15 EST 2012

Hi Felipe,

if you are willing to contribute your changes to VTK and the transform
filter, I'd be pleased to integrate them.

Thanks,

Seb

PS: You can send me a formatted patch if you want.

On Mon, Nov 19, 2012 at 11:33 AM, Felipe Bordeu
<felipe.bordeu at ec-nantes.fr>wrote:

>  Perfect,
>
> Thanks very much for all the help, I finally succeeded to create the
> filter. I can transform my data (for example, expand one dimension ) and
> keep the originals labels.
>
> Thanks again,
> Felipe
>
> Here is a screen-shot:
>
>
>
>
> Le 18/11/2012 15:48, Sebastien Jourdain a écrit :
>
> Hi Felipe,
>
>  Lets state what we know.
> U,V and W are 3 unit vectors that describe which axis should be used by
> the cube axis.
> OrientedBounds are 6 values describing the bounds of the data using the
> U,V and W vectors. [minU, maxU, minV, maxV, minW, maxW]
>
>  Then to solve your problem you will have to do the following:
>
>  1) Compute Pmin and Pmax as follow
>
>   Pmin = U.OrientedBounds[0] + V.OrientedBouds[2] + W.OrientedBouds[4]
> Pmax = U.OrientedBounds[1] + V.OrientedBouds[3] + W.OrientedBouds[5]
>
>  2) Apply your transform (Rotation, Scale, Translation) to those 2 points
>
>  You get P'min and P'max
>
>  3) Apply the rotation ONLY to U,V and W (as translation/scale have no
> effect on a unit vector)
>
>  You get U', V' and W'
>
>  4) You resolve the equations
>
>  P'min = U'.a + V'.b + W'.c
> P'max = U'.d + V'.e + W'.f
>
>  And then you get OrientedBounds' = [a,d,b,e,c,f]
>
>  And you're done... Do you need anything more ?
>
>  Seb
>
>
> On Fri, Nov 16, 2012 at 6:27 PM, Felipe Bordeu Weldt <
> felipe.bordeu at ec-nantes.fr> wrote:
>
>> Ok,
>>
>>  My idea is simple (http://www.paraview.org/Bug/view.php?id=13583).
>> We visualizes data with non convectional axes, so we put that information
>> (name and units) in the labels. Also we want to be able to use the
>> transformation filter to modified the meshes, and we want the axis and
>> labels to follow the transformation. So I'm writing a filter
>> (vtkTransformWithAxis) that apply the transform to the mesh and to all the
>> data that is used for the cube axis.
>>
>>  But I'm not able create correctly the OrientedBoundingBox and the three
>> vectors to generate the Non Orthogonal Bounding Box.
>>
>>  So if the input does not have all the data for the axis, it will
>> generate the data (vector, OriendedBoundigBox... and so on ) , and then
>> apply the transformation filter.
>>
>>  Is that clearer?
>>
>>  Thanks for you time so far.
>> Felipe
>>
>>  Le 16 nov. 12 à 19:33, Sebastien Jourdain a écrit :
>>
>>  Hi Felipe,
>>
>>  could you rephrase your question, as I'm not sure to follow you
>> anymore. Specially what are the piece of informations that are still
>> missing to you.
>>
>>  Thanks,
>>
>>  Seb
>>
>>
>>  On Fri, Nov 16, 2012 at 1:13 PM, Felipe Bordeu <felipebordeu at gmail.com>wrote:
>>
>>>  I have no problem with the use custom range.
>>>
>>> My problem is than I use a home made transform filter to transform my
>>> data, our data is sometimes degenerated (one axis is very very small), so
>>> we use the transform filter to increase the size of that dimensions. But
>>> the problems is that the cube axes does not have the good units any more (
>>> so we want to keep the labels of the input by applying the same transform)
>>>
>>> Until now I can apply only translation and scale, not rotation.
>>>
>>> note: in the images the little arrow is the original one.
>>>
>>>  <bhfgfhca.png>
>>> <ddgjfefc.png>
>>>
>>>
>>> Felipe
>>>
>>> Le 16/11/2012 17:47, Sebastien Jourdain a écrit :
>>>
>>>  Oops,
>>>
>>>  the "Use Custom Range" will use the text field property but this will
>>> add extra information so when you use the QuadView, the QuadView will be
>>> able to know what the slices origin is regarding those arbitrary bounds.
>>>
>>>  Hope that makes a little bit more sense,
>>>
>>>  Seb
>>>
>>>
>>>  On Fri, Nov 16, 2012 at 11:42 AM, Sebastien Jourdain <
>>> sebastien.jourdain at kitware.com> wrote:
>>>
>>>> Hi Felipe,
>>>>
>>>>  if you check "Use Custom Range" the cube axis will use the oriented
>>>> bounds correctly for the labels instead of using the world space coordinate
>>>> bounds.
>>>> This happen by adding new field data providing the min/max for each
>>>> axis that should be used for the labels.
>>>>
>>>>  Regarding you question the end points of the cube axes will be
>>>>
>>>>  Pmin = U*OrientedBounds[0] + V*OrientedBouds[2] + W*OrientedBouds[4]
>>>>  ...
>>>>  Pmax = U*OrientedBounds[1] + V*OrientedBouds[3] + W*OrientedBouds[5]
>>>>
>>>>  Hope that help,
>>>>
>>>>  Seb
>>>>
>>>>
>>>>
>>>>   On Fri, Nov 16, 2012 at 10:02 AM, Felipe Bordeu <
>>>> felipe.bordeu at ec-nantes.fr> wrote:
>>>>
>>>>>   Hi,
>>>>>
>>>>> I am trying  to understand how the new annotation for the cube axis
>>>>> works.
>>>>>
>>>>> I don't understand how to define the OrientedBoundingBox FieldData
>>>>> variable. (I understand the c++ part, that’s easy ;) )
>>>>> (I'm working with a c++ reader plugin).
>>>>>
>>>>> What is the relation between the Oriented Bound and the scale and the
>>>>> position of the axis.
>>>>>  <mime-attachment.png>
>>>>>
>>>>>     Thanks
>>>>>
>>>>>     Felipe
>>>>>
>>>>>
>>>>>
>>>>>     ps: Paraview 3.98.0-RC2 git version, kubuntu 12.04 64.
>>>>>
>>>>> --
>>>>>
>>>>> Felipe Bordeu Weldt
>>>>> Ingénieur de Recherche
>>>>> -------------------------------------
>>>>> Tél. : 33 (0)2 40 37 16 57
>>>>> Fax. : 33 (0)2 40 74 74 06Felipe.Bordeu at ec-nantes.fr
>>>>> Institut GeM - UMR CNRS 6183
>>>>> École Centrale Nantes
>>>>> 1 Rue de La Noë, 44321 Nantes, FRANCE
>>>>> -------------------------------------
>>>>>
>>>>>
>>>>>   _______________________________________________
>>>>> 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
>>>>>
>>>>> Follow this link to subscribe/unsubscribe:
>>>>> http://www.paraview.org/mailman/listinfo/paraview
>>>>>
>>>>>
>>>>
>>>
>>>
>>>   --
>>> Felipe Bordeu Weldt
>>> Felipe Bordeu Weldt
>>> Ingénieur de Recherche
>>> -------------------------------------
>>> Tél. : 33 (0)2 40 37 16 57
>>> Fax. : 33 (0)2 40 74 74 06
>>> Felipe.Bordeu at ec-nantes.fr
>>> Institut GeM - UMR CNRS 6183
>>> École Centrale Nantes
>>> 1 Rue de La Noë, 44321 Nantes, FRANCE
>>> -------------------------------------
>>>
>>>
>>
>>
>> _______________________________________________
>> Powered by www.kitware.com
>>
>> Visit other Kitware open-source projects at
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>>
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>>
>>
>
>
> --
>
> Felipe Bordeu Weldt
> Ingénieur de Recherche
> -------------------------------------
> Tél. : 33 (0)2 40 37 16 57
> Fax. : 33 (0)2 40 74 74 06Felipe.Bordeu at ec-nantes.fr
> Institut GeM - UMR CNRS 6183
> École Centrale Nantes
> 1 Rue de La Noë, 44321 Nantes, FRANCE
> -------------------------------------
>
>
> _______________________________________________
> 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
>
> Follow this link to subscribe/unsubscribe:
> http://www.paraview.org/mailman/listinfo/paraview
>
>
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