field decay

Replies to This Discussion

Permalink Reply by David Rutten on July 30, 2013 at 5:26am

There is a decay input for spin-forces. What sort of decay are you looking for?

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David Rutten

david@mcneel.com

Tirol, Austria

Permalink Reply by Taylor on July 30, 2013 at 7:39am

I mean the decay of the spin angle, I'm not a physicist but I think when we put a magnet into a regular needle metrix, the rotation should have a force decay, from very strong rotation where it near the magnet to slightly movement to the outside until nothing, like a pipple. but now the field doesn't have that effect. Or I fucked up..? I use rhino 5 and gh 0.9.0056. The radius and decay in the component seems both control the radius in my file.

Permalink Reply by David Rutten on July 30, 2013 at 9:36am

Well, the direction of a spin force is always clockwise or counter-clockwise around the central point. That spin characteristic never goes away. However the strength of that spin does diminish the further away you are from the centre point. If you only look at the field using a directional visualisation then you will not notice this decay (unless there is also another field present).

If I draw the fields as vector with direction and strength, then you can see the decay:

Or if I embed the spin field within a vector field (slanted towards the upper right) then you can see that the spin only has a local effect:

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David Rutten

david@mcneel.com

Tirol, Austria

Permalink Reply by Taylor on July 30, 2013 at 10:45am

thanks David, I also realized the angle problem by asking myself where it should point without another force if there is a decay for that ...thanks!