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alpha and interpolators?

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Joined: 2006-12-26

hi all i want to ask 2 questions
1-for using alpha i want to make a wheel to rotate, so i use a rotational interpolator, but when i set the time of ramp increase of alpha, so each time the wheel slow down and begain to accelelrate in each cycly, so the question is how to make a ramp increase for acceleration but loop only the linear increase without the ramp increase , so that the wheel rotate smoothly with constant speed

2-i need a link to simple collision detection algorithm