Thank you so much for this! I really appreciate you taking the time to explain some of the gotchas that someone may run into when transitioning between SOPs and DOPs. Tons of great tips in there for beginners like me.
@@motionoperators thanks for the reply! checking them out soon as I just got done making the pressure falloff setup from the video! But I have a question related to that setup. I wanted to add "seems" my vellum geo, to give it a mylar balloon effect when it inflates, how should I go about doing that so the vellum geo inflates into that shape with the seems.
@@Vivavisuals3D The method kind of depends on the resolution of your sim and how fine you want the wrinkles to be. If you have a very dense balloon, you could get those ridges or seams by shortening the rest length of the stretch constraints in certain areas to cause pinching. If you want fine wrinkles to simulate quickly, though, you might have better luck just sculpting those into your high-res balloon mesh as a texture or blend shape, then point deforming the high-res mesh with your simpler simulation mesh.
@@motionoperators so after trying a little bit I found a result I really liked which was making a group for the seems and running that through the pins, now I'm curious how to setup the pins to activate from a deflated position to inflated, would it also be in the solver level?
The technique of scaling the constraint primitives along with pressurescale is shown in a Houdini example file, but using a more complex analysis that guarantees the pressure solve is accurate. My way is quick and dirty by comparison. Here's the example from the docs: www.sidefx.com/docs/houdini/vellum/pressure.html
@motionoperators sorry to bother but in the examples in the latest mop+ version(MOPsPlus_Indie_20230521_py39) there isn't Vellum rest length.hip where can I find it?
I'm really sorry about the mix-up! The updated example files didn't make it into the Python 3.9 build. If you download the Python 3.7 build, you can grab the example files from there. I'll make sure all the updated examples are included in all Python versions of the next release. Thanks for letting me know!
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I love MOPS
Soooooo useful. Will dive into the world of MOPS Apply Attributes now to fully understand its power. Thanks for all your work!
Thank you so much for this! I really appreciate you taking the time to explain some of the gotchas that someone may run into when transitioning between SOPs and DOPs. Tons of great tips in there for beginners like me.
I was worried I'd rambled a bit too much on this one (an hour is a long video for me!) but I'm happy this is helping you!
WOW! Incredible, thank you!
super nice stuff. thank you for sharing!
yesss this will be super useful! thanks for making it so in-depth! 💥
Amazing. Thank you!
Super well explained, thanks alot for posting this one! You've made my life much easier haha!
Cool! Thank you!
Hell ya, thanks!
Thanks for this video. Unfortunately I cannot add mops inside vellum solver :( none of them are avaliable from the menu
Do you have MOPs Plus installed? The DOP nodes are only included as part of MOPs Plus, not the open source MOPs package.
This video is a great way to showcase the potential of MOPS, was wondering if you could do something like this but for volumes?
I do have volume SOPs in MOPs+ but haven't had the time to do a new tutorial yet... there are included example files for the volume tools though!
@@motionoperators thanks for the reply! checking them out soon as I just got done making the pressure falloff setup from the video!
But I have a question related to that setup.
I wanted to add "seems" my vellum geo, to give it a mylar balloon effect when it inflates, how should I go about doing that so the vellum geo inflates into that shape with the seems.
@@Vivavisuals3D The method kind of depends on the resolution of your sim and how fine you want the wrinkles to be. If you have a very dense balloon, you could get those ridges or seams by shortening the rest length of the stretch constraints in certain areas to cause pinching. If you want fine wrinkles to simulate quickly, though, you might have better luck just sculpting those into your high-res balloon mesh as a texture or blend shape, then point deforming the high-res mesh with your simpler simulation mesh.
@@motionoperators ahh the point deform method sounds interesting! going to try both
@@motionoperators so after trying a little bit I found a result I really liked which was making a group for the seems and running that through the pins, now I'm curious how to setup the pins to activate from a deflated position to inflated, would it also be in the solver level?
Oh my god I was trying to do the inflation scale on my own without mops and I couldnt understand why the geo just kept flying away
The technique of scaling the constraint primitives along with pressurescale is shown in a Houdini example file, but using a more complex analysis that guarantees the pressure solve is accurate. My way is quick and dirty by comparison. Here's the example from the docs: www.sidefx.com/docs/houdini/vellum/pressure.html
Thanks for sharing! I just subcribed MOPS+. Would you please share the tutorial hip file?
The example files are included in the MOPs+ install directory, look for an "examples" directory there
nice! is there a way for us to access these example houdini files? thanks
If you have the latest release of MOPs Plus, the example files are included!
@motionoperators sorry to bother but in the examples in the latest mop+ version(MOPsPlus_Indie_20230521_py39) there isn't Vellum rest length.hip where can I find it?
I'm really sorry about the mix-up! The updated example files didn't make it into the Python 3.9 build. If you download the Python 3.7 build, you can grab the example files from there. I'll make sure all the updated examples are included in all Python versions of the next release. Thanks for letting me know!