expressions question 2004-05-25 - By stefan@(protected)
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This one worked fine for me (on cylinder1.kine.local.rotz).
( cylinder1.kine.global.posx / ( 2 * PI ) / 4 ) * 360 * -1
Change the "/ 4 " to what ever radius the object has.
best regards
/stefan andersson
"Peter Twardo" <peliosis_v2@(protected)> wrote:
> Well, since the amount of rotation, depends on both :
translation, and radius of
> an object, your expression could't work.
>
> I hope this helps:
>
> (Try changing radius of your cylinder or whatever if you
havent frozen it)
>
>
>
> ' ******************************************
>
> CreatePrim "Cylinder", "MeshSurface"
>
> Rotate , 90, 0, 0, siAbsolute, siParent, siObj, siX
>
> ResetTransform "cylinder", siCtr, siRot, siXYZ
>
> InspectObj "cylinder.kine.local"
>
> AddExpr "cylinder.kine.local.rotz"
>
> SetExpr "cylinder.kine.local.rotz",
>
"cylinder.kine.local.posx*-(360/(2*PI*cylinder.polymsh.geom.cylinder.radius))"
>
> ' ******************************
>
>
>
> Peter
>
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