On Tue, 20 Jan 2009 04:50:08 -0800, cc wrote:

>I've been working on a system for scripting car-motion.  It's
>geometry-based.  ... Based on the idea that when turning, the car will
>revolve around some point which is located at the intersection of where the
>normals (if extended) of all four wheels interrsect.   Each wheel is then
>tangent to the overall axis of rotation and... tracks along the ground
>rather than skids.  That point of course always be inline with the back
>axle.

I haven't looked at the whole thing yet, but I can tell you that this 
part at least is incorrect.  If the front wheels are parallel, their 
axes will never intersect.  In fact when you turn, one or both wheels 
will skid just a little.

-- 
These are my opinions.  I do NOT speak for the POV-Team.
The superpatch: http://www2.fwi.com/~parkerr/superpatch/
My other stuff: http://www2.fwi.com/~parkerr/traces.html

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