Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.javascript > #34040

Re: pre-alpha vector field DLA, with point-and-click attractors...

From "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid>
Newsgroups sci.physics, comp.lang.javascript
Subject Re: pre-alpha vector field DLA, with point-and-click attractors...
Date 2017-09-27 13:19 -0700
Organization n/a
Message-ID <oqh155$so9$1@dont-email.me> (permalink)
References <oqa2aa$le4$1@dont-email.me> <oqcipr$avm$1@shakotay.alphanet.ch>

Cross-posted to 2 groups.

Show all headers | View raw


On 9/25/2017 8:50 PM, Une Bévue wrote:
> Le 25/09/2017 à 06:56, Chris M. Thomasson a écrit :
>>
>> in the following pre-alpha highly experimental program I created:
>>
>> http://funwithfractals.atspace.cc/ct_fdla_anime_dynamic_test
>>
>> The code can be streamlined quite a bit, but it should go ahead and 
>> work for now.
> 
> it runs on Safari Developer Preview
> 

Thank you for giving it a go Une! I can make it better wrt a different 
way of programming. This tends to overwhelm the cpu with computation and 
the use of the garbage collector. Wrt GC, the JavaScript engines tend to 
create new object for every array passed to a function. For instance, I 
can pass two 3d points and a radius like this wrt the style of my 
current code:

foo([-1, 0, 0], [1, 0, 0], 1);

Each array index is mapped to (a[0] = x), (a[1] = y) and (a[2] = z).

This will create two damn arrays for each call! And those go into the 
GC. Read here for some further information:

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

Also, it can burn CPU because DLA points never die off! I need to allow 
them to die off and leave the per-field-line segment vector field 
summation. The more points, the slower it goes. I wonder if changing the 
color of the field lines to grey, or some color that designates turning 
"brown/yellow", or the interpolation of the death cycle wrt specific 
colors. The act of death would take pressure off the core field logic 
wrt reducing iterations.

Back to comp.lang.javascript | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread


Thread

pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-24 21:56 -0700
  Re: pre-alpha vector field DLA, with point-and-click attractors... Julio Di Egidio <julio@diegidio.name> - 2017-09-24 22:36 -0700
    Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-24 22:44 -0700
      Re: pre-alpha vector field DLA, with point-and-click attractors... Julio Di Egidio <julio@diegidio.name> - 2017-09-24 22:54 -0700
        Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-25 12:31 -0700
          Re: pre-alpha vector field DLA, with point-and-click attractors... Julio Di Egidio <julio@diegidio.name> - 2017-09-26 09:05 -0700
            Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-28 21:24 -0700
              Re: pre-alpha vector field DLA, with point-and-click attractors... Julio Di Egidio <julio@diegidio.name> - 2017-09-29 06:47 -0700
        Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-25 12:39 -0700
  Re: pre-alpha vector field DLA, with point-and-click attractors... "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-09-25 22:00 +0200
    Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-25 13:25 -0700
      Re: pre-alpha vector field DLA, with point-and-click attractors... "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2017-09-25 22:36 +0200
        Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-27 13:38 -0700
  Re: pre-alpha vector field DLA, with point-and-click attractors... Une Bévue <unbewusst.sein@fai.invalid> - 2017-09-26 05:50 +0200
    Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-09-27 13:19 -0700
      Re: pre-alpha vector field DLA, with point-and-click attractors... "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2017-09-30 08:41 -0700
        Re: pre-alpha vector field DLA, with point-and-click attractors... "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2017-10-04 20:48 -0700
          Re: pre-alpha vector field DLA, with point-and-click attractors... "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2017-10-05 08:25 -0700

csiph-web