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robcat2075

Modeling and Rigging a Spring

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A mere two-bone solution to the problem of rigging a compressible spring that introduces the use of "bone falloffs" to quickly weight large sets of CPs that need to be apportioned among than one bone...

 

 

 

Modeling_and_Rigging_a_SpringH350.mov+71

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A mere two-bone solution to the problem of rigging a compressible spring that also introduces the use of "bone falloffs" to quickly weight large sets of CPs that need to be apportioned to more than one bone...

 

 

Nicely solved and well presented Robert :).

 

See you

*Fuchur*

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Awesome tutorial as always Robert

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Nice Tut Robert but for the spring would it be easier to use the primitive wizard

 

 

springprim.jpg

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Super tutorial, as always! The video was strangely shaky, which I think might be either an encoding or playback issue.

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The video was strangely shaky, which I think might be either an encoding or playback issue.

 

Shaky how? And what were you playing it on?

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I was going to say the same as John. It also has an option to create the bones for you.

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I was going to say the same as John. It also has an option to create the bones for you.

 

Hey, I learned something!

 

 

Adding the bones is handy, although you'd still have to constrain them all. I think my way might be faster and easier.

 

It seems to have trouble sometimes making all the patches:

 

 

spiral.JPG

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Hmm, that's odd with the patches, could that be a normal direction issue?

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Hmm, that's odd with the patches, could that be a normal direction issue?

 

I have show backfacing on.

 

I pulled it apart and it seemed to be dead-ending two splines together where they really ought to be one continuous spline. So there wasn't a legal patch formed, just the spline sides.

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I'm not having that issue. I can reproduce it if I try to undo it.

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I'm not having that issue. I can reproduce it if I try to undo it.

 

You're right! I think must have done undo when I saw the coils too close together on that first try.

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is the perfect solution!

Thank you!

 

my_spring3.prj

 

This Bone Falloff stuff is very powerful. It's one of those A:M things we've barely scratched the potential of.

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The video was strangely shaky, which I think might be either an encoding or playback issue.

Shaky how? And what were you playing it on?

It is fine in the beginning, but by 3:00, the movement of the cursor is rather jerky. It is especially noticeable around 3:30 as you "M" (move) the spring down. It is as if it is showing frames:

3:00 3:01 3:02 2:26 2:27 2:28 2:29 3:07 3:08 3:09 3:10 3:03 3:04 3:05 3:06 3:11 3:12

 

I'll attach a video (AVI) that I screen captured with CamStudio, which degrades the quality but shows the jerky motion I am seeing.

 

Here is what I have:

Windows 7 Home Premium 64-bit, all patches applied

ASUS G73JW-A1 (laptop), CPU=I7-740CM, Video=NVidia GeForce GTX 460M

Apple Quicktime 7.7.1 (1680.42)

Firefox 10.x (after rebooting, it updated to 11.0).

Modeling_and_Rigging_Shaky.zip

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It is fine in the beginning, but by 3:00, the movement of the cursor is rather jerky. It is especially noticeable around 3:30 as you "M" (move) the spring down.

 

This may be due to me selecting "Allow Frame Re-ordering" in Quicktime. I usually never do it, but then i read that Apple recommend to always do it unless you are targeting a mobile device.

 

But i think I'll recompress it without Frame Reordering and replace the file.

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Thank you for this Rob this has been alot of help Great Stuff

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Brilliant and inspiring! Playback was fine for me but I assume you've already replaced the video file. Great tute!

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Rob,

 

Excellent tutorial as usual. I'm putting this in my tutorial repository. Yippee!

 

Cheers!

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