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Re: Repulsion between physical and other objects

by AnnMarie@SLFBI :: Rate this Message:

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For a swing, the trick for natural motion is to use llSin() to calculate
angles for llSetRot().  This gives you the deceleration at the top of the
swing so you don't have a jerky direction reversal.

AnnMarie Otoole

----- Original Message -----
From: "Barrington John" <sl.barrington.john@...>
To: <secondlifescripters@...>
Sent: Thursday, September 04, 2008 6:17 AM
Subject: Re: Repulsion between physical and other objects


> Something to bear in mind here is that smoothness
> of movement is surprisingly subjective.
>
> Recently, I made a swing for my partner  and
> started off using llSetRot() to make it happen,
> but couldn't get it smooth enough for my own
> tastes - using it was actually nauseating for
> me.  My partner, however, was perfectly happy
> with the movement.  I was not.  Since this was a
> labour of love rather than Lindens, I kept
> investigating - people I spoke to who'd made
> swings (all using the same method with varying
> parameters) were adamant that their swings were
> "smooth" - I, on the other hand, found every one
> of these swings to be very unpleasant to use,
> rather to their builders' bafflement. Impasse.
>
> In the end, I changed the movement in my own
> swing to use llTargetOmega() and was delighted to
> find it completely free from any jerkiness.  My
> partner kind of agreed that it was a better
> experience and we started to use the swing a lot
> more.
>
> Now, whenever we come across a swing or a hammock
> in our SL travels, it is she as much as me who
> remarks that the swing at home is far more
> pleasant to use.  Meanwhile, the builders of
> llSetRot() systems continue to be perfectly happy
> with their own creations.  It's incredible how
> subjective it is, and what is fine to one person
> can actually be genuinely unpleasant,
> even nauseating, to another.
>
> I'd be very interested to visit your llSetRot()
> Ferris wheel in-world, to see if I could ride it
> without feeling ill, and to compare notes with
> someone who found the movement fine to use; I
> find it hard to believe that the difference is
> purely psychological, and wonder if it's to do
> with different hardware.
>
> On Wed, 3 Sep 2008 07:09:38 -0700
> Jippen <cheetahmorph@...> wrote:
>

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 « Return to Thread: Repulsion between physical and other objects