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Rodonea
screenshot added by Ozzyboshi on 2020-08-02 09:26:06
platform :
type :
release date : july 2020
release party : Flashparty 2020
compo : oldskool demo
ranked : 4th
  • rulez 13
  • is ok 2
  • sucks 0
popularity : 48%
 48%
  • rulez 0.87
alltime top: #16006
added on the 2020-08-02 09:26:06 by Ozzyboshi Ozzyboshi

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The stunt in mathematics of a 17th century monk crammed in an OCS Amiga? How cool is that?
https://en.wikipedia.org/wiki/Luigi_Guido_Grandi
rulez added on the 2020-08-02 09:40:00 by Z3k Z3k
Lovely music
rulez added on the 2020-08-02 10:55:26 by govatsapadam govatsapadam
Awesome. Great idea.
rulez added on the 2020-08-02 11:02:52 by DrProcton DrProcton
Nice little mathematic Amiga demo
rulez added on the 2020-08-02 11:25:32 by Queen_Luna Queen_Luna
errr what, no group nor credits on this one?

need come back for thumb once those get fixed --> biggie for now.
added on the 2020-08-02 11:28:49 by harism harism
cool
rulez added on the 2020-08-02 11:50:09 by Sir Sir
Quote:
errr what, no group nor credits on this one?

need come back for thumb once those get fixed --> biggie for now.


no group because there is actually no group, the demo is 100% coded by a single person (me) and I didnt belong to any group (and I've never) , even if I would really like to find a group willing to accept me.

Credits are listed on the github page
https://github.com/Ozzyboshi/Rodonea

When submitting the entry on pouet there wasnt a credit section to be filled but maybe there is a way to add this (i am sure there is), I am investigating however, from the github page

Concept and coding: Alessio Garzi (Ozzyboshi)
Mod music: Paul Kempster (Freeman / Lard Design) (https://modarchive.org/index.php?request=view_by_moduleid&query=61501)
Suggestions and beta testing: Carlo Biondini (Z3K), Stefano Briccolani (Dr. Procton)
Copperlist gradient : Carl Svensson
added on the 2020-08-02 12:33:59 by Ozzyboshi Ozzyboshi
Nice. Dot flowers. You could show more flowers if you compute a few dots of the next flower in each frame while showing each flower.
rulez added on the 2020-08-02 13:03:29 by ham ham
Nice little thing.
With a good mod remix from "the great bath"
rulez added on the 2020-08-02 13:34:26 by Virgill Virgill
Very good for a first release, i really like it. Thanks
rulez added on the 2020-08-02 15:00:57 by Farox Farox
Even if there is only one main scene, it is interesting.
It needs 1 meg of chip. Probably it can be change to 512kb of chip
Anyway thanks to have published the source and thumb up of course :-)
rulez added on the 2020-08-02 15:25:49 by Aghnar Aghnar
Quote:
Even if there is only one main scene, it is interesting.
It needs 1 meg of chip. Probably it can be change to 512kb of chip
Anyway thanks to have published the source and thumb up of course :-)


The whole project started because I wanted to test performances for opengl on a vampire card + rtg, the goal was to calculate all the points real time.
The next challenge was to do to do the same thing on stock amigas but soon I realized there is no way to calculate all points at decent framerate so i started using the simples flowers and cut down the points to 360 for each frame.

Even with this limitations my stock amigas was not able to calculate each of the 360 pont so I started precalculating.

Precalculating means to put in an array all 360 points, each point is expressed in cartesian coordinates. In my first release I used 2 bytes for X and Y positions , so it is 4 bytes for each point and the final result must be multiplied for 360 because the flowers are rotating 1 degree at time (from 0 to 359).
At the end I used deltas, describing a point in relation to the previous one and I compressed the result using an algorithm compression called Huffman.
In my source code you'll find a huffman decompression routine that uses a portion of time every frame to decompress a chunk of data.
With this method I managed to stay under the meg of chip otherwise I would need some fast ram.
Probably you demoscene gurus knows better tricks to compress data, that was my solution, hope to get better in future releases.
added on the 2020-08-02 16:05:24 by Ozzyboshi Ozzyboshi
Nice one, keep coding!
rulez added on the 2020-08-02 18:10:08 by grip grip
Ciao, produzione interessante.

Looking for a group? :-)
rulez added on the 2020-08-08 13:54:43 by AlienTech AlienTech
Nice for a firstie!
rulez added on the 2020-08-08 15:25:20 by 4pLaY 4pLaY
Always nice to see productions with a story, even if this story is about the math used in the effects ;)

Welcome!
rulez added on the 2020-09-20 22:26:56 by Wavemaker Wavemaker

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