Re: Field Collisions Anime...

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From	"Chris M. Thomasson" <invalid@invalid.invalid>
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Subject	Re: Field Collisions Anime...
Date	Sun, 12 Feb 2017 20:00:27 -0800
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On 2/12/2017 7:59 AM, Michael Haufe (TNO) wrote:
> Chris M. Thomasson wrote:
>> Here is the non-interactive pre-alpha test origin of a "collision
>> avoidance system" based on vector fields. Its meant to be a fun,
>> hopefully interesting, experiment. So far, the damn field lines just
>> want to help the vehicles in circles avoid crashes. In this crude setup,
>> a collision will make the anime flash, and tangentially move the
>> colliding agents out of the way. The crude online example is here:
>>
>> http://funwithfractals.atspace.cc/ct_gf_explore
>> (does this work for you at all?)
>>
>> Fwiw, I first posted about this here:
>>
>> https://plus.google.com/101799841244447089430/posts/JmbpLWvdJEf
>> (has a screenshot of the program...)
>>
>> Can you please give it a go? Is it slow as shi%? Crap?
>>
>> Any radical bugs in the JavaScript? ;^o
>>
>> Thanks.
>
> averaging about 16 FPS. Nearly 20% of the time spent on Garbage Collection.

Yup. Its because of all the damn arrays. The code uses them in the 
animation loop. Fwiw, this is in relation to:

https://groups.google.com/d/topic/comp.lang.javascript/dgakiMzhgv0/discussion

I did a benchmark, and the array version is slower.


>
> There are a significant number of optimizations that could be done here, such as double-buffering, not drawing in Immediate Mode, and others.
>
> Missing 'use strict' pragma
>
> JSHint shows a number of minor issues you should handle: <http://jshint.com/>

Thank you Michael. Will study the problems.


>
> Aside: You seem to write JavaScript like a C or C++ programmer which is a little strange.
>

Big time. I am actually not all that used to JavaScript. However, its a 
nice little medium to get some quick, hopefully portable, animations up, 
to see whats going on.

Thread

Field Collisions Anime... "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-02-11 20:46 -0800
  Re: Field Collisions Anime... jonas.thornvall@gmail.com - 2017-02-11 23:00 -0800
    Re: Field Collisions Anime... "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-02-13 16:15 -0800
  Re: Field Collisions Anime... jonas.thornvall@gmail.com - 2017-02-12 01:27 -0800
    Re: Field Collisions Anime... "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-03-05 18:47 -0800
  Re: Field Collisions Anime... "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2017-02-12 07:59 -0800
    Re: Field Collisions Anime... "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-02-12 20:00 -0800
      Re: Field Collisions Anime... "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-02-14 18:16 -0800
        Re: Field Collisions Anime... "Chris M. Thomasson" <invalid@invalid.invalid> - 2017-02-14 18:27 -0800

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