Tutorial 3 - Rain Systems and Wet-Maps
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- เผยแพร่เมื่อ 26 ก.ย. 2018
- Firstly, As I forgot to mention it in the video, please support the creator of the Angel Geometry used in the video. Just drop him a like or follow on Sketchfab:
sketchfab.com/models/3b7e4e4a...
Welcome back! Our sincerest apologies for being away for the last couple of months, however we're back for a long while. Our next installment in our Houdini tutorial series is this rain tutorial which was promised a while back. We go over popnet streams, collision behaviours and groups as well as how to construct a wetmap for the rain system.
This was suggested by 'Carte Blanche Channel' and 'Silks'. Thanks for the suggestion and if anyone else has any suggestions, please drop a comment and we'll take it into consideration.
As mentioned in the tutorial, we used a setup inspired by Ben Watts for our wetmap and that can be found here:
vimeo.com/149939158
For further information and discussion on our tutorials, visit our blog-posts:
www.ninebetween.com/single-po...
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/ ninebetween - ภาพยนตร์และแอนิเมชัน
Hey everyone, we're back! We're immensely sorry for the long wait but we thank you for your continued patience and support! We're going to be releasing a lot of what we've been working on in the weeks to come. We already have Rubiks Cube, Lightning, Geo affector, Symbiote and Particle advection tutorials in the works. Stay tuned and be sure to make suggestions for future videos below. Enjoy!
I would like to learn how to make tools, such as believable growing Ice.
Or that ice path disney used in incredibles 2. If you got some free time? nobody else gives it any love, and there are no good ice tuts :0
Hey, not sure if you've checked this one out, it's not bad if I remember correctly: th-cam.com/video/5ifMIXwBzh8/w-d-xo.html
hey you make a tutorial on this same video to how to render and add materials for this!
if your "run" group is not working properly, go into the popsolver and under collision behavior change "response" from die to "unchanged". I have no idea why this was set to die by default but it took me two hours of trying to tweak every single thing and this is what solved the issue.
Thanks bro
should be highlighted comment!! Saved me too, thank you
I hope you get everything you want for christmas
THANKS DUDE!. Highlight this man!
legend
I love you my dude. Thanks for sharing the knowledge and taking your time to go step by step, you're a hero
Thank you for all these explanations !
Thank you for this tutorial. You're actually the first to explain why and what you are doing. Thanks mate
Amazing tutorial! First time opening Houdini and I could follow along! Thank you!
That was awesome andincrediable! Thanks a lot and keep inspiring people!
What a great tutorial. Being all new to Houdini, this showed me a lot of interesting nodes.
Thanks for watching! If you're interested in learning more about Houdini's nodes, we have a nodes tutorial here: th-cam.com/video/QkR5CQ6u3eM/w-d-xo.html
Thanks for the tutorial I’ve been trying to create wet maps for a while now but most tutorials are from 2015 so this really helped
OMG I love this tutorial!! Simulating the raining effect is super romantic!
That's a great tutorial. Thx for it man.
This is actually a super great tutorial
1000 and 1 Thanks! This is incredibly helpful for me. And everything is perfectly explained
You rocks! Thumb up!
No problem! Glad its still useful even if it is 6 months late (whoops). Thanks for watching!
IMPORTANT!
On first "popreplicate" you need to check"kill original particle" in Birth tab. If you don't do this performance will suffer and you ll get worst outcome.
Thanks a bunch!
Thanks man!
Great work. Keep it up!
Great video, keep it up! Been looking for a decent rain in Houdini tutorial. Hope to incorporate rain into my second year University project so this will be a massive help!
Awesome, glad I could help! All the best with your project :)
THIS WAS EXTREMELY HALPFUL TYSM
Superb,Simply awesome..:)
Thank you for sharing!
Awesome!
Thanks for great tutorial!
awesome tutorial bro, thumbs up
Thank you !
Legend!
Immediate subscription! been waiting for a houdini tutorial on rain for many years... didnt have the guts to research myself.
Haha, thanks for the sub! We're open to suggestions here so if you have any other effects that you would like to have us cover, feel free to tell us :)
You're welcome! OK, if I have the line open on weather effects... :p Ever since SideFX released their terrain tools I've been looking for a way to properly add snow accumulation on geometry, controlled by a few parameters such as wind direction and accumulation amount. The covered surface should become thick and smooth , something like: c1.staticflickr.com/9/8678/30312998692_6ec72d176f_b.jpg but i bet this could be useful for adding snow on smaller objects like a loghouse model, too. Anyway, since you asked :-)
1:17 of this video is a good example, too, vimeo.com/244305098
Yeah, that seems super interesting! I haven't done much work with terrain in Houdini so I can't say for certain how much could be done with the terrain tools alone. As for the video that you sent, it could probably be done with a grain solver and a VDB convert on the static parts of it so that it acts more like a solid once its at rest. I'd like to mess around with a snow system after seeing that. I'll get back to you on that one :)
I meant 1:17 obviously. I'll be holding my breath for it, but i'm sure anything you publish will be appreciated. Cheers!
Thanks!
thank you master
Awesome tutorial. Thank you!
How would I go about plugging these wet attributes into an arnold shader? Im struggling here.
Great tutorial! any insight into the workflow for applying the wet maps and rendering?
Thanks
Thanks for the tutorial, it's great!
A simple question regarding wet maps, when i created the point cloud, i tried an alternative, instead of using the point cloud from both inputs 1 & 2 and adding them together, i used the point cloud from input 2 (the rain) and i used a bind VOP instead and imported the wet attribute and added it to the attribute from the rain, it almost got me the same result (99%). Why use 2 point clouds, can u explain this to me?
Hi, it's a good job ! But i have a problem, how to send this (wet) in Maya renderman and make it renderable ?
Hey nice tutorial !! i m wondering how to finish this on Houdini ? i mean i rendered on C4d with alembic & wetmap and it works perectly. But i would render on houdini/Vray. The things is I would use the black and white wetmap as mask to apply 2 differents shaders. Do you have any way to do this ? Sounds pretty easy but i did find the solution yet ! thank you so much anyway for your really nice tutorial.
does anyone know why is the wet map not showing on my mantra rendering?
Great tutorial! For the sliding particles, how would you make them individually slide down different ways (e.g. rain on a window)?
How can you use the collision object for the wetmaps if its deforming?
Very cool :D Would this be also a good method of making a rain scene in a real scale CG village I made? I need to animate a man walking trough the streets of the village while it is raining, the man is 170cm tall and the buildings are to scale with him... However I am doing it in Cinema4D, so could I combine these somehow?
one question
can i import this rain into ue4
This is so cool! Thank you for those explanations! Now I was thinking... If would use a wet map like this for a vellum simulation, there would be any way to associate this to make the wet areas to stick more to a collision surface? Maybe if I could use those maps to trigger a glue constraint or to associate them with the friction?
Hey I'm completely new to houdini but, might be a way to add it to the density or mass of the point/primitive? +stickiness
Any chance of getting a download of this .hip file?
Hi mate lovely tutorial,
I'm trying to export out the animation but can't seem to add any motion blur (yes I've cached and yes i've check Karma settings... neither worked). How did you do it?
Also don't know how to transfer vertex colours of the wetmap to the stage network for rendering.
thanks,
josh
Thank you very much for your incredible tutorials, may Allah bless you and give u what ever u wish in your life
i drop a ground plane and change particle to poligon then it become the green kind of fur thing instead of sphere poligon how can i fix that please help
hello,how to render wetmap out?
what if the collider object is animated how to make particles that can effect animated object
Hi, I have problem when I add pop wrangle o have a warning : popobject - /obj/rain/pop net/popwrangle2/geometrywreangle1/geometryvop1: Invalid group ( stream_pipreplicate1)
hi can you show a tutorial for snow please
Thanks for great tutorial! Now the particles are sticking on the surface forever? How could I drop them when they reach certain velocity or drip off the object?
Thanks for watching! The particles stick to the surface depending on the strength of the cling attribute. 100 is quite high so it may need to be adjusted. Hope that sorts it out for you :)
Ahh so the cling thing actually does it for me, I tought it would need vex to drop them off. Thanks! Gotta also try randomize the cling with vex (fit01 rand)
Great idea, randomization to cling could add some interesting dripping
29:09 if anyone is looking for the wetmap part.
33:41 I tried it and it doesn't seem to work. Same settings as you explained. Everything remains as black dots
Is there a way to write a out a wet texture map to be used in other softwares such as Maya???
Hi, I may be mistaken, but I think you may achieve better results by using a custom attribute in Maya and using it to drive your shader in Arnold. Otherwise, the best way to export the wetmap as a texture map would be to use the Bake Texture ROP. There should be decent online resources for baking a texture map in Houdini, perhaps on ODForce forums. Hope this helps!
@@NineBetween Thank U. Really helpful.
once again brilliant.. I would like to do this with Hair I guess just add gravity / mass to the wet areas making hair droop down.. but the female in my game needs a seine where she climbs out the sea onto a boat and I want the hair to look matted and knotted from the salt water rather that just flat ..... any ideas ???
Hey! I'd recommend taking a look at vellum hair simulation. You could use a glue constraint that causes strands to stick together in clumps. You could drive the glue strength by a wetness attribute so that dry hair tends to separate whilst wet hair pulls together. It's tricky to give you specifics without knowing the details of your project, but hopefully, that points you in the right direction😁
@@NineBetween Thanks Ace. your A one stop shop when I get stuck 🙂
Hey can you help me....my group is not getting called in our rain geometry.
I am only able to call two groups (hitGroup) (maingroup).
Had the same promblem, they seem inaccessible but when you type them in everything works just fine
Thanks for this, can i ask how you made the background scene for your opening vid?
Hi Amos,
The background is an HDRI. It's basically an environment image that also acts as a light source. If you render it out (with a bit of post processing such as depth of field blur and glow) you end up with the background in the video. You can download HDRIs from a place like hdrihaven.com
Hope that helps!
@@NineBetween hey thanks, struggling with my houdini renders, i'm more used to c4d, i will try to get it looking better, for some reason my materials are coming out terribly
@@NineBetween so i'm trying to render it out and for the first few frames the render is fine then it goes all black like a box comes down and covers it, do you have any idea what that might be please?
Hi, I'm in Houdini 19 and when i plug in the VDB from particles in the delete node, it doesn't show anything. Could someone help me, please?
Edit: If you're having the same problem:
- put an Dop IO Node (In "Dop Network" put your Popnet node and in "DOP Node" put "../popnet/popobject/)
- Uncheck "import simulation settings"
- Add a field and put "Geometry" (No change in visualization)
Just cache and the VDB part will work.
You're a legend
For moving objects this is not working.
total beginner with houdini 18, the vex command "@bounce=1" returns an error... any ideas?
Hey, not sure if you're potentially missing a semi-colon at the end of the line or anything like that but otherwise, try removing the '@' symbol. I believe pop wrangles no longer require the @ notation but I may be wrong. Hope that helps!
@@NineBetween I figured it out, it was just the semicolon... I'm a total dummy!! thank you so much, this tutorial is very helpful
@@theoroinvictus No problem! Glad you got it right :)
Where is final render result?
The angel render in the beginning is the final render. It uses the same rain system as shown in the tutorial.
run spawn/run its not being visualized after copying the setup. Also getting
Warning
popobject - /obj/geo1/popnet/popwrangle3/geometrywrangle1/geometryvop1: Invalid group (stream_popreplicate2 )
Warning still there but fixed my original issue
Awesome!
Thanks!
I've got a question: I guess the angel/sculpture is high poly, what kind of collider is the best option for those geometries?