POV-Ray : Newsgroups : povray.binaries.images : some sextics (Polynomials of 6th degree) Server Time
20 Apr 2024 06:50:31 EDT (-0400)
  some sextics (Polynomials of 6th degree) (Message 1 to 4 of 4)  
From: Lars R 
Subject: some sextics (Polynomials of 6th degree)
Date: 6 Nov 2017 03:03:41
Message: <5a00175d@news.povray.org>
I wondered why the Wikipedia articles about some sextics (6th degree
polynomials) don't have images, so I want to render some.

Unfortunately the formulas given in the articles did not work, so I
modified them and get some nice looking objects, I've attached here.

I hope you like them a bit.


I also animated them and uploaded the videos to my homepage (I don't
like Youtube and other data collecting companies ;-)). Surprisingly my
Firefox does not want to play the MP4 videos, but it played older videos
I created the same way.

Here are the old videos where both Ogg/Theora and MP4 works in Firefox:

http://roker.spamt.net/videos/pov/

here are the new videos where MP4 does not play (and the Ogg/Theora
looks worse than the MP4 with the same bitrate):

http://roker.spamt.net/pov/sextic/

I also added a lossless FFV1 video for your own encoding experiments, if
you want to help me. :-)


Lars R.


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Attachments:
Download 'qq_037.png' (122 KB) Download 'wi-preview.png' (54 KB)

Preview of image 'qq_037.png'
qq_037.png

Preview of image 'wi-preview.png'
wi-preview.png


 

From: JimT
Subject: Re: some sextics (Polynomials of 6th degree)
Date: 6 Nov 2017 12:35:02
Message: <web.5a009c6842a2bffdbe7517870@news.povray.org>
"Lars R." <rou### [at] gmxde> wrote:
> I wondered why the Wikipedia articles about some sextics (6th degree
> polynomials) don't have images, so I want to render some.
>
> Unfortunately the formulas given in the articles did not work, so I
> modified them and get some nice looking objects, I've attached here.
>
> I hope you like them a bit.
>
Very interesting
>
> I also animated them and uploaded the videos to my homepage (I don't
> like Youtube and other data collecting companies ;-)). Surprisingly my
> Firefox does not want to play the MP4 videos, but it played older videos
> I created the same way.
>
> Here are the old videos where both Ogg/Theora and MP4 works in Firefox:
>
> http://roker.spamt.net/videos/pov/
>
> here are the new videos where MP4 does not play (and the Ogg/Theora
> looks worse than the MP4 with the same bitrate):
>
> http://roker.spamt.net/pov/sextic/
>
All the MP4s worked for me in Chrome and were high quality. The Theora
compression is, as you say, much worse than MP4.

> I also added a lossless FFV1 video for your own encoding experiments, if
> you want to help me. :-)
>
I thought about trying to run the FFV1, but Windows complained about downloading
multiple files and I stopped.
>
> Lars R.

Thanks for the movies, sorry not to be much help.


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From: Alain
Subject: Re: some sextics (Polynomials of 6th degree)
Date: 6 Nov 2017 20:24:00
Message: <5a010b30@news.povray.org>
Le 17-11-06 à 03:03, Lars R. a écrit :
> I wondered why the Wikipedia articles about some sextics (6th degree
> polynomials) don't have images, so I want to render some.
> 
> Unfortunately the formulas given in the articles did not work, so I
> modified them and get some nice looking objects, I've attached here.
> 
> I hope you like them a bit.
> 
> 
> I also animated them and uploaded the videos to my homepage (I don't
> like Youtube and other data collecting companies ;-)). Surprisingly my
> Firefox does not want to play the MP4 videos, but it played older videos
> I created the same way.
> 
> Here are the old videos where both Ogg/Theora and MP4 works in Firefox:
> 
> http://roker.spamt.net/videos/pov/
> 
> here are the new videos where MP4 does not play (and the Ogg/Theora
> looks worse than the MP4 with the same bitrate):
> 
> http://roker.spamt.net/pov/sextic/
> 
> I also added a lossless FFV1 video for your own encoding experiments, if
> you want to help me. :-)
> 
> 
> Lars R.
> 

Play correctly here using Firefox 56.0.2.


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From: Mr
Subject: Re: some sextics (Polynomials of 6th degree)
Date: 8 Nov 2017 04:05:01
Message: <web.5a02c79d42a2bffd16086ed00@news.povray.org>
Alain <kua### [at] videotronca> wrote:
>
> Play correctly here using Firefox 56.0.2.

Here too, with 52.4.0 no problem


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