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.bor...@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 <felipebor...@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.jourd...@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.bor...@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.bor...@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.bor...@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 > >
_______________________________________________ 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