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Soft bodies in cloner behavior
Posted: 31 December 2018 07:27 AM   [ Ignore ]  
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Hi and a happy new year! Im the annoying guy again smile

I have a soft body simulation baked in a cloner. When i add some jiggle after the fact (or even if i just add subdivision surface on the cloner) the simulation disappears, unless i disable the effectors.
All good with disabling the effectors, but then i lose the colors of my cloners smile

Any thoughts? thanks

scene file: https://www.dropbox.com/s/2io964ciyt4sswo/soft bodies in cloner behavior.c4d?dl=0

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Posted: 31 December 2018 07:35 AM   [ Ignore ]   [ # 1 ]  
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Also connect object alone, gives an abrupt movement when linear field touches first spheres. Just noticed that as well.

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Posted: 31 December 2018 10:17 AM   [ Ignore ]   [ # 2 ]  
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Thanks for the file, thanulee, very much appreciated.

I will take a closer look next year. For now, how about this:
(Edit ‘19: now that I got more of an idea what was wanted, I would see it as a given and needed limitation based on priorities, besides Jiggle seems like something that should be established with the Soft-bodies to begin with. Since Jiggle is used before the Dynamics, it will certainly decrease/fail the quality of the animation IMHO/edit)

Scene file
https://www.amazon.com/clouddrive/share/1JGYIkiZoHEhLrFS3qUQQjlKeHSKNbRTizoz6sFZc4L

In short, I added another Linear Fields to the scene (Layer: Yellow) and used it in the the Jiggle.
In that way they don’t try to go flat before the action starts.

In short, there are certainly some different forces at work, and I need a little bit more input. Isn’t the Jiggle Deformer doubling the effect. However, if the effect is wanted, just let me know. Perhaps toss the Jiggle and work with Weight Maps/Fields instead.

Happy New Year.

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Posted: 01 January 2019 12:13 AM   [ Ignore ]   [ # 3 ]  
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Btw the issue im facing with connect, is this:
https://www.dropbox.com/s/h5kx146q0h4pjec/connect cloner after caching issue.webm?dl=0

Thanks a lot! Let me know ur findings smile cheers

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Posted: 01 January 2019 12:54 AM   [ Ignore ]   [ # 4 ]  
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Hi thanulee,

In the moment the connect is enabled, it starts to produce a new object, hence its color [icon=green], before that, the SSD has nothing to work with. I can’t see more in this video. Let me know what I miss.

All the best

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Posted: 01 January 2019 01:06 AM   [ Ignore ]   [ # 5 ]  
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Its not about the color. Check how smooth the first spheres grow without connect. When i enable connect the first ones pops abrupt.

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Posted: 01 January 2019 01:31 AM   [ Ignore ]   [ # 6 ]  
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Thanulee, I mentioned the icon color, nothing in the scene.

You need to place the Dynamic tag to the Cloner, then clear the cache and bake it again. It should work then.

For any true comparison, render a preview, the editor view can change based on the load (calculations)

Cheers.

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Posted: 01 January 2019 02:50 AM   [ Ignore ]   [ # 7 ]  
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Gottcha! Will try and let u know smile thank u

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Posted: 01 January 2019 05:17 AM   [ Ignore ]   [ # 8 ]  
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Fingers crossed, thanulee, that you get the same results as I got.

I rendered two previews (Connection Object on/off) and placed them on top of each other with a difference blend mode. (In the image with a split screen)

They were both identical.

Enjoy.

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Posted: 01 January 2019 07:36 AM   [ Ignore ]   [ # 9 ]  
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Great ur absolutely right! Its a viewport glitch! I ll check tomorrow rendering with effectors enable, despite what i see in my viewport! cheers

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Posted: 01 January 2019 07:56 AM   [ Ignore ]   [ # 10 ]  
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Thanulee,

It is kind of predicable, since the Connect has to read everything connected to it and then reproduce it. If on top of that the SDS has to work, it gets even more heavy.

However, the Dynamic Tag needs to be on the Cloner.

ENJOY.

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Posted: 01 January 2019 08:07 AM   [ Ignore ]   [ # 11 ]  
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Thanks. Now i remember why i put it there. It cant be on the cloner since im offsetting the pressure keys with the plain effector for each sphere.

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Posted: 01 January 2019 11:14 AM   [ Ignore ]   [ # 12 ]  
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Thanulee, yes, if you need to have it there (and I get that point), perhaps set a MoGraph Cache to the Cloner, as without, the Cloner’s influences (including the Cloner specific Effectors) and information is not stored. You can see that easily with the Dynamic Tag Cache size either on the child or the parent, the parent cache is bigger. To get what you want and have it properly cached, this would perhaps prevent any problems. If you are happy with the solution without MoGraph test it for renderings.

Cheers.

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Dr. Sassi V. Sassmannshausen Ph.D.
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Posted: 01 January 2019 01:01 PM   [ Ignore ]   [ # 13 ]  
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Heya, mograph cache isnt working either.
It changes sim for some reason (i suspect from the result that is unable to read the pressure animation) + it doesnt keep the color animation.
I tested it also yesterday, just double checked it now.
Thanks anyways for the effort!

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Posted: 01 January 2019 02:15 PM   [ Ignore ]   [ # 14 ]  
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You’re very welcome, thanulee.

Edit: I checked the color, it works here, see screen shot.
(I have tested with copy with an alternative set up, as mentioned above.)
https://www.amazon.com/clouddrive/share/LR1tw1FaIngob5Vjg9pkCgBaToFiO2cjCMZUAVbS6yK
If the Cloner Object is in the Transform left with a while color, it will not work of course, this needs to be set to black)
/edit
At this point, I’m not certain what else to do, or if there is even another question or option to explore.
You might check with the support
https://www.maxon.net/en/support-center

However, I assume the answer will be like this:
Since you need to have the Dynamic tag on the child object, any generator object on top of that (or linked) might produce problems, as the information is based on a single child’s tag, and since it is very different as clone, the information might be not available as wanted.
Dynamic is on Priority Generator +400
https://help.maxon.net/us/#TEXTAG-OBASELIST
In this way the Jiggle Deformer or any Generator has no chance, it might change for a moment, then Dynamic takes over.

All the best

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Posted: 02 January 2019 02:40 PM   [ Ignore ]   [ # 15 ]  
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Alternative:

Thanulee, please have a look at this file, if it allows for all your targets.
Scene file
https://www.amazon.com/clouddrive/share/gGeMwCyihyYAu2Xah0tMAbLreFg4KGiKbKIDN1SH3pF

It uses the Dynamic Soft Body Tag>  Attribute Manager> Soft Body> Rest State.

More about this option, here:
https://help.maxon.net/us/#DYNRIGIDBODYTAG-RIGID_BODY_GROUP_SOFT

I have set a PLA key on Frame 0 for this, just in case the whole model becomes screwed up, during more set up.

Yes, there is no Cloner, but I used one to get the spheres (made editable, connect and delete), then copied it for the rest state object.
The Plain Effector is set up as Deformer>Points.

What ever you explore, if it doesn’t seems to work, cache it. Check if the cache is active.
Here is the test with some extras, the row of spheres in the back.
Screen Shot
https://www.amazon.com/clouddrive/share/VEy6pnJbMsG9dBQrxvNND8MvIX99lYddzPm0iP9qcfN

Have fun with it.

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Dr. Sassi V. Sassmannshausen Ph.D.
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