Re: vtk.js: display particular cells with alpha/transparency/opacity
Sebastien Jourdain via vtkusers <[email protected]>
| Newsgroups | gmane.comp.lib.vtk.user |
|---|---|
| Message-ID | <CABObKxc2kWxzmDpUYivaNHj1NQL9q7nwSDMSkAJTOtOBc3jGhw@mail.gmail.com> |
Can you do a codepen and share it so I can see what you are doing exactly? On Thu, Dec 13, 2018 at 9:26 AM Raimonds Vilums <[email protected]> wrote: > I tried and got > > index.js:441 Uncaught (in promise) TypeError: Cannot add property 3, > object is not extensible > at Object.publicAPI.rGBAToRGBA (index.js:441) > at Object.publicAPI.convertToRGBA (index.js:487) > at Object.publicAPI.mapScalars (index.js:238) > at Object.publicAPI.mapScalars (index.js:272) > > > > On Thu, Dec 13, 2018 at 6:10 PM Sebastien Jourdain < > [email protected]> wrote: > >> You should be able to have an array with 4 components (RGBA) >> >> On Thu, Dec 13, 2018 at 9:01 AM Raimonds Vilums < >> [email protected]> wrote: >> >>> Hi, >>> >>> Is it possible to display cells with custom opacity for each cell? >>> >>> Till now, I managed >>> 1) set opacity to the actor (e.g., actor.getProperty().setOpacity(0.5)) >>> 2) color cells with solid colors, e.g: >>> >>> >>> - vtk file contains CELL_DATA array of floats with 3 components for >>> every color >>> - >>> >>> mapper.setColorModeToDirectScalars(); >>> >>> - >>> >>> mapper.setScalarModeToUseCellFieldData(); >>> >>> - >>> >>> mapper.setColorByArrayName('my_cell_data'); >>> >>> >>> But I could not find a way to set alpha/opacity/transparency for >>> particular cells. >>> Is it possible? >>> >>> Regards, >>> Raimonds >>> >>> _______________________________________________ >>> 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 VTK FAQ at: >>> http://www.vtk.org/Wiki/VTK_FAQ >>> >>> Search the list archives at: http://markmail.org/search/?q=vtkusers >>> >>> Follow this link to subscribe/unsubscribe: >>> https://public.kitware.com/mailman/listinfo/vtkusers >>> >> _______________________________________________ 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 VTK FAQ at: http://www.vtk.org/Wiki/VTK_FAQ Search the list archives at: http://markmail.org/search/?q=vtkusers Follow this link to subscribe/unsubscribe: https://public.kitware.com/mailman/listinfo/vtkusers