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Re: "Nearly a quarter-century later, why is C++ still so popular?"

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On 8/7/2021 6:03 PM, Ian Collins wrote:
> On 04/08/2021 01:01, Öö Tiib wrote:
>> On Tuesday, 3 August 2021 at 15:17:10 UTC+3, Juha Nieminen wrote:
>>> Öö Tiib <oot...@hot.ee> wrote:
>>>> Feels rather unlikely that we want to do anything with such Vertex 
>>>> instance
>>>> in separation. Instead we want those to be processed (in massive
>>>> amounts) by some rendering engine (like OpenGL).
>>> I don't really understand why you have such a hard time imagining a 
>>> situation
>>> where something like that Vertex class would feel like a very 
>>> convenient and
>>> good design choice.
>>>
>>> Not all programs that handle, for example, triangle meshes are doing 
>>> so to
>>> merely feed the data to OpenGL (or any other API). There may be 
>>> myriads of
>>> reasons why a program may want to handle triangle meshes in some manner,
>>> and some of these applications may be something that benefit from 
>>> extreme
>>> speed (because they may need to do a lot of heavy operations to gigantic
>>> triangle meshes).
>>
>> As rule we want to render those too. If for nothing else then for 
>> debugging.
>> Therefore if we really process 3D triangles directly then it is more 
>> convenient
>> to keep the data layout suitable for rendering API, even if we do part of
>> processing outside of that API as well.
> 
> Our application's positioning engine does not render the triangle meshes 
> we use for mapping.  Its job is to work out where targets should be on a 
> surface and to generate guidance lines on the map.  The rendering is 
> done in using OpenGL on another device.
> 
> I'm sure this situation isn't uncommon.

Not uncommon at all. Not sure if the following scenario is "comparable" 
or not, however... I have pure C++ that generates scenes for another 
application to render, PovRay. In this case, I did not implement a 
raytracer. Imvvho, PovRay is pretty fun to work with.

https://youtu.be/skGUAXAx6eg

Other times, I will implement a crude distance estimator for 3d work:

https://www.shadertoy.com/view/fdBSzm

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"Nearly a quarter-century later, why is C++ still so popular?" Lynn McGuire <lynnmcguire5@gmail.com> - 2021-07-27 14:59 -0500
  Re: "Nearly a quarter-century later, why is C++ still so popular?" Siri Cruise <chine.bleu@yahoo.com> - 2021-07-27 13:48 -0700
    Re: "Nearly a quarter-century later, why is C++ still so popular?" Vir Campestris <vir.campestris@invalid.invalid> - 2021-07-27 22:05 +0100
      Re: "Nearly a quarter-century later, why is C++ still so popular?" Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-07-27 14:23 -0700
        Re: "Nearly a quarter-century later, why is C++ still so popular?" legalize+jeeves@mail.xmission.com (Richard) - 2021-08-05 19:49 +0000
          Re: "Nearly a quarter-century later, why is C++ still so popular?" Jorgen Grahn <grahn+nntp@snipabacken.se> - 2021-08-19 20:08 +0000
            Re: "Nearly a quarter-century later, why is C++ still so popular?" Siri Cruise <chine.bleu@yahoo.com> - 2021-08-19 18:20 -0700
              Re: "Nearly a quarter-century later, why is C++ still so popular?" Juha Nieminen <nospam@thanks.invalid> - 2021-08-20 06:13 +0000
              Re: "Nearly a quarter-century later, why is C++ still so popular?" Jorgen Grahn <grahn+nntp@snipabacken.se> - 2021-08-20 06:17 +0000
                Re: "Nearly a quarter-century later, why is C++ still so popular?" Siri Cruise <chine.bleu@yahoo.com> - 2021-08-20 00:03 -0700
                Re: "Nearly a quarter-century later, why is C++ still so popular?" Juha Nieminen <nospam@thanks.invalid> - 2021-08-20 11:03 +0000
                Re: "Nearly a quarter-century later, why is C++ still so popular?" mickspud@downthefarm.com - 2021-08-20 15:19 +0000
              Re: "Nearly a quarter-century later, why is C++ still so popular?" "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2021-08-20 14:26 +0200
                Re: "Nearly a quarter-century later, why is C++ still so popular?" Öö Tiib <ootiib@hot.ee> - 2021-08-29 23:40 -0700
    Re: "Nearly a quarter-century later, why is C++ still so popular?" Cholo Lennon <chololennon@hotmail.com> - 2021-07-27 21:01 -0300
    Re: "Nearly a quarter-century later, why is C++ still so popular?" Juha Nieminen <nospam@thanks.invalid> - 2021-07-28 08:16 +0000
      Re: "Nearly a quarter-century later, why is C++ still so popular?" "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2021-07-28 16:22 +0200
        Re: "Nearly a quarter-century later, why is C++ still so popular?" Siri Cruise <chine.bleu@yahoo.com> - 2021-07-28 07:53 -0700
          Re: "Nearly a quarter-century later, why is C++ still so popular?" "Alf P. Steinbach" <alf.p.steinbach@gmail.com> - 2021-07-28 21:23 +0200
            Re: "Nearly a quarter-century later, why is C++ still so popular?" Siri Cruise <chine.bleu@yahoo.com> - 2021-07-28 14:16 -0700
          Re: "Nearly a quarter-century later, why is C++ still so popular?" Juha Nieminen <nospam@thanks.invalid> - 2021-07-29 06:53 +0000
            Re: "Nearly a quarter-century later, why is C++ still so popular?" Öö Tiib <ootiib@hot.ee> - 2021-07-29 09:31 -0700
              Re: "Nearly a quarter-century later, why is C++ still so popular?" MrSpud_71i5@slwgrcbmd1l7yi1.org - 2021-07-30 11:21 +0000
              Re: "Nearly a quarter-century later, why is C++ still so popular?" Juha Nieminen <nospam@thanks.invalid> - 2021-08-01 08:28 +0000
                Re: "Nearly a quarter-century later, why is C++ still so popular?" Öö Tiib <ootiib@hot.ee> - 2021-08-01 05:49 -0700
                Re: "Nearly a quarter-century later, why is C++ still so popular?" Juha Nieminen <nospam@thanks.invalid> - 2021-08-02 10:23 +0000
                Re: "Nearly a quarter-century later, why is C++ still so popular?" MrSpud_rLY23@_h_.co.uk - 2021-08-02 15:05 +0000
                Re: "Nearly a quarter-century later, why is C++ still so popular?" Öö Tiib <ootiib@hot.ee> - 2021-08-03 04:57 -0700
                Re: "Nearly a quarter-century later, why is C++ still so popular?" Juha Nieminen <nospam@thanks.invalid> - 2021-08-03 12:16 +0000
                Re: "Nearly a quarter-century later, why is C++ still so popular?" Öö Tiib <ootiib@hot.ee> - 2021-08-03 06:01 -0700
                Re: "Nearly a quarter-century later, why is C++ still so popular?" Ian Collins <ian-news@hotmail.com> - 2021-08-08 13:03 +1200
                Re: "Nearly a quarter-century later, why is C++ still so popular?" "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-08-07 22:43 -0700
            Re: "Nearly a quarter-century later, why is C++ still so popular?" Vir Campestris <vir.campestris@invalid.invalid> - 2021-08-01 21:40 +0100
          Re: "Nearly a quarter-century later, why is C++ still so popular?" Chris Vine <chris@cvine--nospam--.freeserve.co.uk> - 2021-07-29 09:53 +0100
          Re: "Nearly a quarter-century later, why is C++ still so popular?" Manfred <noname@add.invalid> - 2021-07-30 13:51 +0200
      Re: "Nearly a quarter-century later, why is C++ still so popular?" Manfred <noname@add.invalid> - 2021-07-30 13:40 +0200
  Re: "Nearly a quarter-century later, why is C++ still so popular?" Bonita Montero <Bonita.Montero@gmail.com> - 2021-07-28 04:05 +0200
    Re: "Nearly a quarter-century later, why is C++ still so popular?" MrSpud_oyam9ltRb0@khlkg.info - 2021-07-28 09:30 +0000
  Re: "Nearly a quarter-century later, why is C++ still so popular?" Bo Persson <bo@bo-persson.se> - 2021-07-28 08:19 +0200
  Re: "Nearly a quarter-century later, why is C++ still so popular?" "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2021-08-03 13:10 -0700
    Re: "Nearly a quarter-century later, why is C++ still so popular?" Lynn McGuire <lynnmcguire5@gmail.com> - 2021-08-03 18:37 -0500
      Re: "Nearly a quarter-century later, why is C++ still so popular?" Cholo Lennon <chololennon@hotmail.com> - 2021-08-05 18:17 -0300
  Re:"Nearly a quarter-century later, why is C++ still so popular?" Blue Hat <blue_hat@hackershaven.com.jm> - 2021-08-08 13:33 -0500

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