Re: [Atomos-discuss] That's the way the money goes; pop goes the weasel.

[Weirdbro <wie...@gm...>]

I am familiar with the canvas tag. It has really slow pixel rendering, so I
found that making it work like a monitor, and least a raster monitor, is
impossible.

On 1/11/07, Scott Elcomb <ps...@gm...> wrote:
>
> On 1/11/07, Bryan Elliott <for...@gm...> wrote:
> > Scott:
> > > Nice clean code.  I love it, and the dock in particular.  Has me
> > > wondering if a version could be implemented for the AOS desktop.
> > > Along the lines of an applet maybe?
> >
> > Perhaps, but note that performance decreases dramatically with a greater
> > number of icons. There's little that can be done about it; it's because
> of
> > the way resizes are done in JavaScript under a browser (ie: somewhat
> > inefficiently).  I mean, one could theoretically write Warcraft in
> > Javascript.  All the components to do so are there and available (ie:
> sprite
> > placement and control), but (and I know this from experience; I
> tried.  Had
> > a good pathfinder when it was just two peons and a few rectangular
> barriers.
> > ) when you get up to sheer numbers of stuff (at least 256 just for a
> 16x16
> > viewport), performance drops down the tube, into the septic tank, and
> keeps
> > on racing down until suddenly bursting out of the ocean just off the
> coast
> > of Australia.
>
> Ok, please forgive me if this post isn't entirely coherent...  Just
> finished a 17 hour shift.  Lol - one of the benefits of being on-call
> 24/7.  ;-)
>
> I can understand your comments about applying game development theory
> to web design...  In fact, that might even be a good way to throttle
> the performance issue.
>
> Say that performance is acceptable with 6 icons, but not 16.  Why not
> use parallax scrolling techniques?  That's the way old 2D side
> scrollers (like Super Mario World for example) did it IIRC.
>
> Use an array that contains indexes to the icons, and then use a
> pointer and "window width" to show only the 6 icons currently
> available + portions of the two icons on either end of the "window"
> that may be (potentially partially) visible.  CSS clipping techniques
> should work for this, same as it does for DirectX, SDL, OpenGL,
> Allegro, and other Graphics/Game development libraries.
>
> Using this technique the browser won't have to render/scale the 10
> "extra" images all the time, therefore keeping performance manageable.
> (Not sure what impact preloading the icons would have in this
> situation but I suspect it would help... maybe not during page
> loading, but at "execution-time" perhaps.)
>
> I have several game programming texts laying around and would happy to
> provide some pseudo-code if you'd like.
>
> K, need some sleep.  I'll reply to your other post just as soon as I
> get up and am more than 20% concious.  ;-)
>
> - Scott
>
> PS - Are you familiar with the canvas tag?  <insert-evil-grin-here>
>
> --
> Scott Elcomb
> http://atomos.sourceforge.net/
> http://search.cpan.org/~selcomb/SAL-3.03/
> http://psema4.googlepages.com/
>
> "They that can give up essential liberty to obtain a little temporary
> safety deserve neither liberty nor safety."
>
>   - Benjamin Franklin
>
> '"A lie can travel halfway around the world while the truth is putting
> on its shoes."
>
>   - Mark Twain
>
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