Houdini 17 5 constraint network basics

Constraint networks can be difficult to understand, so here's an attempt at visually explaining how they work on a low level.
Scene file:
www.dropbox.co...

[@andvfx]

Always coming back to your tutorials, they are so well explained! How do you manage your rbds with the newer build in tools for RBD in sop level? Are you using them more than a more manual approach? I found them great for fast setups, but when you need something specific, setups like you did here I found it way more useful.

[@HristoVelev]

Thanks! It's either the RBD configure sop or a wrangle, but they do the same thing - setting the active etc attributes

[@andvfx]

Very cool tutorial series Hristo!

[@jakepeters4337]

Amazing, thanks a bunch, just what I was looking for!

[@sevfx]

This video helped me out big time, thanks :)

[@gulagwarlord]

Thanks a million! I need to make a necklace and this will work perfectly! Thanks for the scene file too! Cheers!

[@adrienrollet5762]

Really cool Hristo

[@SandBoxel]

Thanks a lot man!

[@aliqaiser3393]

i love you !!!

[@linkcell]

Keep it up

[@321Green1Fork123]

Can the gravity and constraint network nodes go after the rigid body solver? That's how one of the examples in class im doing is taught

[@HristoVelev]

Yes, there's not much difference in the order of these most of the time

[@HristoVelev]

Unlike with sops :)

[@321Green1Fork123]

@@HristoVelev cool, good to know, thank you!

[@JacysVFX]

Nice, and I found to get the particles rbd working you must use the mask with particles* instead of particles. Very weird I know.

[@HristoVelev]

Not sure where is that, but check out the names or groups in the geometry spreadsheet - with names for example, there's an index after the text part of the name, and adding the asterisk matches the whole thing :)

[@nictanghe98]

how do you make the poles not move ? i'm unable to use constraints with static objects and importing them like rbd packed objects like you causes them to move.

[@HristoVelev]

You give the points that you don't want to move an integer 'active' attribute = 0. If you assign the attribute before packing, make sure it survives the packing and it's there on the points before they get into the DOP

[@andvfx]

@@HristoVelev I know you can do it with active, however, checking your example, I can not found any attributewrangle where you define this active attribute. how you did it?

[@andvfx]

(Found it) You can specify as well the state of the rigidbody on the "RBD packed object" node on "initial object type".

[@HristoVelev]

@@andvfx several ways to set it but eventually it's the same thing - an attribute value :)

[@aeko]

Why are your node icons black?

[@HristoVelev]

Had a problem with my UI, sorry :)

[@aeko]

@@HristoVelev Oh, haha. I was thinking: woah, that looks kind of cool.

[@18bovende]

Looks like sushi.

[@dickie_hrodebert]

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