[ODE] orientation in ODe

[Jon Watte]

If it points in the Z direction, then it's because something collided with something such that a Z component was generated.

If you don't convert your data (except for gravity) when putting it in, then you don't need to convert it when taking it out. If you DO convert it when putting it in, you have to convert it when taking it out -- except there's so many cases, you're likely to get it wrong somewhere. Thus, I recommend not converting, neither when putting data in nor taking it out.

Just think of ODE as working in your coordinate system, and put in data using your coordinate system; you'll get data out in your coordinate system, as well!

Cheers,

			/ h+


-----Original Message-----
From: ode-bounces at q12.org [mailto:ode-bounces at q12.org]On Behalf Of
Hannes Norda
Sent: Monday, March 29, 2004 1:45 AM
To: ode at q12.org
Subject: [ODE] orientation in ODe


Hi!
Quick question I hope...

I know that orientation in ODE really doesn't matter, since simulations 
behave as expected depending on how you set the gravity... But, I 
noticed that when retrieving the collision normal from dContactGeom the 
z component points up. (I use DirectX-style orientation btw.) So I guess 
I need to convert the normal to my space. Now I'm just curious, where 
does x and y components point??

/Hannes



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