 | | | unit settings | unit settings 2004-06-15 - By Tekano Bob udox
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depends how much it wieghs - does a 1 ton ball of feathers fall faster than
a 1 ton ball of lead ?? ;p
tek
-- -- Original Message -- --
From: "Andi Farhall" <andi@(protected)>
To: <XSI@(protected)>
Sent: Tuesday, June 15, 2004 11:41 AM
Subject: RE: unit settings
> cheers.... 10cm a unit is what i work to anyway. which is handy.
>
> does a falling sphere not accelerate at the same rate irrespective of what
> its made of?
>
> -- --Original Message-- --
> From: Raffaele "ThE_JacO" Fragapane [mailto:jaco@(protected)]
> Sent: 15 June 2004 10:06
> To: XSI@(protected)
> Subject: RE: unit settings
>
>
> A unit is supposed to be 10 cm. Forces in previous versions tho defaulted
at
> values that considered a unit to be 1 meter, that's why, for the sake of
> consistency, forces like gravity now default to 98 rather then the old
9.8.
>
> A unit is still 10cm, and default forces are now closer to realistic
> behavior, but bear in mind that, for the distance/force ratio to make any
> sense, you'd still need mass values, density, friction and so on.
> Lack of these concepts in today's simulation systems brings the whole
> dynamics system (for ANY package) back to be based on visual feedback.
>
> RBDs don't really know if the falling sphere should accelerate like if it
> was made of gold or hollow PVC.
>
> ~Raffaele Fragapane
> ~Freelance Technical Animator & TD
> ~Senior TA @ Peerless Camera
>
> -- --Original Message-- --
> From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf
Of
> Andi Farhall
> Sent: Tuesday, June 15, 2004 11:39 AM
> To: 'xsi@(protected)'
> Subject: unit settings
>
> apart from colour space, it would seem that unit settings have gone in v4.
> Not that i ever used radians or milliseconds. Documentation says a unit
can
> be whatever you want but how does that fit with things like gravity?
>
> Andi
>
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