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Modernization of the U3D build system.

U3D Sample Software Forum
Mark Paton
2016-01-03
2016-01-21

  • Mark Paton

    Mark Paton - 2016-01-03

    Good day,

     I am just wondering if this project is still active? I have been trying to use it a bit and I note that the build system for the project is rather painful. I'd be willing to try and update it to utilize something like CMake but to do that it would be much easier to be able to talk to someone who understands the current structure well. Is anyone still around who does?

    Talk to you later,
    Mark

     

  • Mark Paton

    Mark Paton - 2016-01-03

    Good day Patrik,

     Thanks for those details. I'll go take a look at what Michail has already done. It does seem a little odd that the MathGL library seems to have a newer version of the code compared to what is here. If useful would it not be worth bringing it back here as well? or is there some other reason not to do that?

    Thanks again,
    Mark

     

  • Michail Vidiassov

    Michail Vidiassov - 2016-01-08

    MathGL 1 has older version of U3D code compared to what can be found at http://www2.iaas.msu.ru/tmp/u3d/ . But the changes are minimal.
    MathGL 2 swithced to PRC for 3D PDF output. PRC code there is also slightly outdated.
    Ask me for current PRC code if you need it.

     

    • Patrik Mueller

      Patrik Mueller - 2016-01-08

      Hi Michail,

      would be interested in having an updated PRC.

      Best regards,

      Patrik

      On 08.01.2016 14:22, Michail Vidiassov wrote:

      MathGL 1 has older version of U3D code compared to what can be found at
      http://www2.iaas.msu.ru/tmp/u3d/ . But the changes are minimal.
      MathGL 2 swithced to PRC for 3D PDF output. PRC code there is also
      slightly outdated.
      Ask me for current PRC code if you need it.

      Modernization of the U3D build system.
      https://sourceforge.net/p/u3d/discussion/557102/thread/43c32d77/?limit=25#2ed0

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      • Michail Vidiassov

        Michail Vidiassov - 2016-01-09

        It will take some time to put into shippable form.
        Drawbacks - my PRC code does not have lossy but efficient compression for point data, so large tessellated models result in bigger files (docs are poor and I did not invest much time into experiments, others reported success).
        Plus - PRC can store curved objects, so tessellation is performed by the viewer, so for such data it gives a great advantage.
        What do you intend to put into 3D PDF?

        If you are interested in my PRC code, you can find it used in Asymptote and my rgl package (at the same www2 now). Sorry, but that examples are the only API descriopion available.
        While for U3D one has IDTF format and examples.

        Sorry for poor form, I had to write this message in haste.

         

  • Patrik Mueller

    Patrik Mueller - 2016-01-21

    Hi Michail,

    my interest in your PRC code is understanding the PRC documentation at the moment. So a reference implementation is always as good base.

     

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