On 2010-10-17 14:22, Le_Forgeron wrote:
> let's a=2/2; /* half of 2 on x*/
> let's b=1.4375/2; /* half of 1.4375 on y */
>
> Contact point (origin) is<x,y>  with
> x = a cos(t)
> y = b sin(t)

ehm...what value are you using for t here?  (it occurs to me that I 
should've been able to figure that out, how you find a point on an 
ellipse...use the same formulas as for a circle, but with different x 
and y radius values)

-- 
Tim Cook

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