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Y-offset rotation
Posted: 12 April 2017 02:19 PM   [ Ignore ]  
Total Posts:  108
Joined  2015-11-30

Hello smile
I’ve been thinking about this ever since I saw an excerpt from this new game “Everything”,
Today I just saw this awesome video demonstrating how to set up “Y-Offset” rotation/rolling in Houdini
https://www.youtube.com/watch?v=JYXZo7RHfas&feature=youtu.be

I was thinking this would be a great opportunity to test my python studies, but maybe there is already a means to achieve this without scripting, so I wanted to check, please check out the video to see what I mean.

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Posted: 12 April 2017 02:48 PM   [ Ignore ]   [ # 1 ]  
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Hi NNenov,

So, create it for Cinema 4D with Houdini:
https://www.cineversity.com/vidplaylist/getting_started_with_houdini_engine/getting_started_with_houdini_engine_what_is_the_houdini_engine
or directly here:
https://www.cineversity.com/vidplaylist/getting_started_with_houdini_engine/getting_started_with_houdini_engine_brief_anatomy_of_an_asset

Plug-in:
https://nitro4d.com/product/magic-roll/

===========


If you like to start the coding on your own:
I would check it with a long rectangular object, if the rolling reflects the surface dimension. My first thoughts on this, one need to find the largest distance to the Y-axis, and that will be then the variable radius, which accounts as well for for the distance of rolling and perhaps with that will change the dynamic. Given that long rectangular object, the energy needed to reach to its tallest “position” is certainly decreasing the momentum, but also accelerating the roll (fall) when it goes down again.

I guess some kind of dynamic set up might be more comfortable to use. wink

But perhaps, check the XPresso Node “Bounding Box”, which will be not sufficient for anything beyond (in terms of complexity) a cube, but perhaps a start for your exploration…
https://www.amazon.com/clouddrive/share/FMfAGy2RTH1aILwhL1fk0F8Qfuux1XaPTNoHadh6xuh?ref_=cd_ph_share_link_copy

Enjoy the exploration.

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Dr. Sassi V. Sassmannshausen Ph.D.
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Posted: 12 April 2017 04:05 PM   [ Ignore ]   [ # 2 ]  
Total Posts:  108
Joined  2015-11-30

oh man, I forgot about the new houdini pipeline integration, I’m downloading the free version ( Houdini Apprentice ) now, do you think this version will work?
Oh I’m just reading now that it won’t work! nooo..
That plugin doesn’t seem to work on first attempt, will twiddle with it a bit later.

My thoughts exactly, I was thinking the bounding box option would be integral to such an effect

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Posted: 12 April 2017 05:25 PM   [ Ignore ]   [ # 3 ]  
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I guess the full version is needed from Houdini to develop assests, NNenov, last time I checked.
https://www.maxon.net/en-us/products/houdini-integration/

The difference that needs to be clear is the use of Houdini assets vs the creation of Houdini assets.
http://http.maxon.net/pub/houdini/documentation/Houdini_Engine_Plug-In_Documentation.pdf
It is possible to use assets, but the creation of it is limited to specific versions of it.

If you take any complex object to roll it in any direction, the underlaying algorithm might get very complex. From my point of view too complex for this forum, as any (complex) coding in Python or C.O.F.F.E.E. is more and better supported here:
https://developers.maxon.net

The main question that I would throw at this is certainly based on the practicality of such development, do you really invest a lot of time for a few uses or do you like to invest this time more into alternative animation methods, which might allow from the start to feel more like an artist and art-direct your outcome, rather than a predictable physically correct algorithm, with a lot of time investment before any visible result. Of course there is the learning factor, which I certainly see. If this is a standard thing required to do, perhaps suggest it to MAXON or develop it.

Enjoy the ride.

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES, DCS

Photography For C4D Artists: 200 Free Tutorials.
https://www.youtube.com/user/DrSassiLA/playlists

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