Using Animated Objects in the RBD Bullet Solver in Houdini
ฝัง
- เผยแพร่เมื่อ 2 ส.ค. 2024
- Using animated objects in the Bullet Solver isn't as straightforward as it may seem. We go over how to use animation as well as mixing animation, gravity and static objects.
Leave a like and a favorite if you enjoyed. Subscribe if you want to.
Please let me know what you thought of the video.
Follow me-
insidethemind.space/
/ stormzedits
/ mindofstormz
www.artstation.com/matt_ekstrom
How can you do this but have the cube animated and break when it hits something. Like a bat hitting a ball? And the bat having the rbd fracture on it?
I havent done that myself but I have some thoughts. Don't want to give you wrong information. I will get back to you when I have a minute to test some things
I figured it out. Seems more difficult than it actually is. Set up your animation like normal, place the RBD material fracture after the animation, then place a RBD configure node after that. The configure node is the key. You want to animate the Active and Deforming settings of the configure node. Set the active to zero until the frame of collision and the deforming to one until that same frame. The frame that they collide on you want to set active to one and deforming to zero. This will make the object active and disable the animation so that the simulation can take over. That was a really good question. Thanks for bringing that up. I probably will make a video for that.
@@InsideTheMindSpace Thanks that worked! I set the active to 0 and animated to 1 then grouped the pieces that don't need to be destroyed. Like so the handle of object doesn't crumble in the character's hand.
@@Digital_Guerrero Glad that you got it figured out.
@@InsideTheMindSpace yup was going to type the same answer, this also applies to this video since you could have just did these steps on the rbd configure node instead of using "attribute adjust integer"
Thanks a lot! This video is exactly what I was looking for!
It would be really cool if you could add more playlists on different Houdini themes. I would love to see your RDB playlist now where the videos are in the correct viewing order. Thanks again!
wow awesome! thank you for making this! I spent about an hour trying to figure this out on my own without any success.
Happy to help. Definitely a little confusing at first
Hi! Great tutorials! I'm trying to have two animated objects collide together and then break apart. Do you have any ideas on setting this up? I thought it would be simple but I haven't got it to work. i've tried vellum shape match and this method...
thank you so much bro, you literally saved my ass ! I searched a lot of videos to find out how to do this !
Well I'm glad you got it figured out
awesome man!, great explanation , thank you.
Holy smokes I was searching and searching trying to figure out why my collision object wouldn't move, or would just drop to the floor. Wish google would have made you the first hit. :) Thanks!!!
As long as you got there eventually. I'm glad I could help.
Wow, great video!
Fantastic stuff, the parts about using the name and active attributes really improved my understanding. BTW you don't need the attr adjust if you turn on the checkbox for each Active entry, and then set each to 0 or 1 as required there - so the active attribute exists on each before going into the merge.
Happy to help. And you are correct. I realized that later on
How to create a pin constraint inside sop bulletsolver?
how can i activate gravity as it hits..my test object is in the air already..
By far the best tut i've seen for Houdini thus far. The other tuts were wasted time. Seriously who uses velocity only ? pfff everything needs manual touch. No where else have I found this super simple info. Mind you it's also probably because v.18+ simplified things but still. THANK U!!!!!
Happy to help. The revamped tools definitely made things easier but I agree, sometimes you still need to do things manually. Sometimes you just can't get the level of control you need without
@@InsideTheMindSpace I've got a lot of very specific alembics and C4D dynamics is baby poop. Had fun with Nebulas too. Houdini is unavoidable if you need accurate quality. Thank you. My eyes are open.
clearly explain like always, thanks
Happy to help!
I think why the collision object was falling to the ground was because you have @active=1, you should have it at zero while @animated and @deforming both be equal to 1
Hi awesome tut ! what i don`t get to work is when i want the collision object(sphere) to be animated and change to rigid body sim at simulation ! i tried animating active and deforming attributes on the sphere, but it doesn`t work. Do you know, how to do it ?
Sorry got it. forgot to turn override attributes on in the solver
Glad you figured it out!
thanks for sharing! this is a great channel!
Thanks for the support and kind words!
@@InsideTheMindSpace You are welcome!
Is there a way I can set the pre-fractured pieces to get activated once the sphere gets close to it and actually hits it?
Yeah you should be able to just keyframe the activation
@@InsideTheMindSpace If I do that all the pieces fall together. There should be some fractured pieces staying together.
You could calculate a collision event that sets the stopped attribute from 1 to 0 and initialize the simulation with it set to 1