So, later i find, an another solution but, for the clock's spline, the number of
point make many trouble in the scene.
The clock without number'spoint, like that, i can't use spline for camera
movement.



#declare SplineTransform = Spline_Trans(CamSpline,clock,y,.1,.5);

#declare pCam = <0, 0,0>;
#declare pCam_Transformed = vtransform(pCam, SplineTransform);
#declare pCam_L = <0, 0,1>;
#declare pCam_L_Transformed = vtransform(pCam_L, SplineTransform);


 camera {angle 50*image_width/image_height


        location    pCam_Transformed
        look_at  pCam_L_Transformed
 right   x*image_width/image_height
 up y
 direction z*1


}

Who know how, or why clock make trouble with clock*nbr_of_spline_point.

Thanks

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