POV-Ray : Newsgroups : povray.binaries.animations : Rollin Rollin Rollin Server Time
23 Dec 2024 06:24:41 EST (-0500)
  Rollin Rollin Rollin (Message 1 to 5 of 5)  
From: Bathurstfreak
Subject: Rollin Rollin Rollin
Date: 16 Oct 2005 00:10:01
Message: <web.4351cf788fdf4054f5c315de0@news.povray.org>
Though the streets are swollen... kidding

NO, my latest iteration on the rolling balls and chutes.

Instead of basing the position of the ball at a node and weighting the
supports so they occur every 2 metres, I decided to fix the track segments
at 0.25m, have supports every 2m and weight the position of the ball. This
enabled me to inbuild classic physics within the code for velocity
acceleration, and what I think is a first for animations, taking into
account drag on a rolling ball, of course none of this would be any benefit
if it didn't allow the model to run backwards, so I had to build in an if
statement that reduced the test point if velocity was negative so that the
ball would roll back down the ramp from where it came.

All this too opens up the possibility for a true rollercoaster that only
starts accelerating halfway down a hill when the last car makes it over a
crest.

James


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Attachments:
Download 'rolling.wmv.dat' (594 KB)

From: James
Subject: Re: Rollin Rollin Rollin
Date: 17 Oct 2005 10:55:01
Message: <web.4353ba691ef4144bf5c315de0@news.povray.org>
> All this too opens up the possibility for a true rollercoaster that only
> starts truly accelerating halfway down a hill when the last car makes it over a
> crest.

A true weighted roller coaster, be it based on balls.
James


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Attachments:
Download 'rolling2.mpg' (607 KB)

From: Florian Brucker
Subject: Re: Rollin Rollin Rollin
Date: 17 Oct 2005 11:20:45
Message: <4353c14d@news.povray.org>
> A true weighted roller coaster, be it based on balls.
> James

Very nice! Now some more loops and spins and an animation with the 
camera in the front seat :)


Keep up the cool work!
Florian


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From: Darren New
Subject: Re: Rollin Rollin Rollin
Date: 17 Oct 2005 13:07:10
Message: <4353da3e$1@news.povray.org>
Florian Brucker wrote:
> Very nice! Now some more loops and spins and an animation with the 
> camera in the front seat :)

Reminds me of one of the end-scenes in Myst Exile.

-- 
   Darren New / San Diego, CA, USA (PST)
    Neither rocks nor slush nor salted rims
    shall keep us from our appointed rounds.


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From: James
Subject: Re: Rollin Rollin Rollin
Date: 21 Oct 2005 23:05:02
Message: <web.4359ab831ef4144bf5c315de0@news.povray.org>
> > Very nice! Now some more loops and spins and an animation with the
> > camera in the front seat :)

Will post a front seat anim in the hols when I get more time, including cam
vibrations, but for now, u'll just have to do with this backward rolling
train of erm ... balls, the balls represent cars secured to the track so do
not fall off.

Coming soon, ball collisions and interactions.

James


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Attachments:
Download 'coaster004.mpg' (501 KB)

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