 | | | expressions question | expressions question 2004-05-25 - By André Adam
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You need to find out the circumference of the ball (= 2pi*radius) and
adjust your expression accordingly.
Example for a sphere with a radius of 2:
Circumference: (2*3.141)*2 = 12.564
Expression would be:
Editing expression on: SPHERE1.kine.global.rotx
Valid expression : (SPHERE1.kine.global.posz / 12.564) * 360
Hope that helps...
-Andr�
alex dinnin wrote:
> For years, when translating a sphere. I have applied an expression so
> that as it moves in z space it rotates in x... thus rolling along the
> floor.... this is the expression I have used..
>
>
> Editing expression on: SPHERE1.kine.global.rotx
>
> Valid expression : SPHERE1.kine.global.posz * 36
>
> As I have never had to go to close up... I have never noticed that
> this is actually wrong !!! and that on close inspection.. the
> translation of ball in relation to the rotation is wrong.. the ball is
> sliding !!!
>
> could anyone point me in the right direction please !!!!
>
> Alex
>
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