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Sweep NURBS from Dynamic Spline problem
Hi,
I’m trying to animate with dynamics kind of algae/seaweed/tentacles etc., fixed from the bottom and swinging in the air.I tried with Spline Dynamics (with a Constraint Tag at the bottom) inside a Sweep NURBS but the base of NURBS is rotating on itself along the Y axis, not “rooted” to the ground.
The same happens if I use a Spline Wrap deformer referencing the Dynamic Spline.
This is NOT happening with the Hair Object, the guides are rooted in the ground, but the problem with this is that then I can generate just instances of singles meshes and not complex objects, e.g. nested or animated.Thank you
Corrado Carlevaro
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4 Replies
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I would cache the dynamic spline, duplicate it, move it over to the side a little, and then use that as a rail spline for the sweep nurbs.
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Thank you again, but as far as I understand the rail is deforming the contour, not actually bending the Sweep axis. I thought there was a more straightforward way to do that. So I have to suppose the Dynamic Spline is different from an Hair Object’s guide, that is you can’t “root” it to the ground? Sorry for all these questions but it’s so difficult to find exhaustive documentation about this otherwise wonderful software.
Corrado Carlevaro
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In the sweep nurbs object properties you should have “use rail direction” checked but “use rail scale” unchecked. Rail direct acts as a sort of up vector to prevent unwanted rotations.
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Ok, thank you (I misunderstood your first reply)
C.C.
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