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rotation axis origin and direction

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Old   April 5, 2015, 21:45
Question rotation axis origin and direction
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Yoon
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HI, I got a problem on making rotating wheel.
I set rotation origin as (3, 2, 5) and the rotating axis Parallel to z axis.
so, how can i set rotation direction??
It suppose to be (3, 2,7) ???? or just (0,0,1)
need your help
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Old   April 6, 2015, 05:19
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Cees Haringa
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If rotation is around the z-axis, your axis should be (x y z) = (0, 0, 1).
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Old   April 6, 2015, 05:48
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thank you for answer.
rotation axis is not z-axis but the axis parrellel to z-axis
then rotation direction should be (0,0,1)??? not (3,2,7)???
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Old   April 6, 2015, 06:12
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yes, because you already give the origin coordinates, so if you use origin (3,2,5) with axis (0,0,1) the axis will be parallel to z, but not on z.

If you would use (3,2,7) as axis direction, it would not be aligned with z at all, instead pointing away from it slightly in the positive x and y direction.
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Old   April 6, 2015, 06:22
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then ,my problem solved now

thank you!

best regards
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Old   April 6, 2015, 06:34
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Glad to be of help!
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