dForce hair with animation issue

dogcat

Hi,

I am pretty new to dForce. I had some success with clothes but now I am trying dForce hair. What I learned so far is that hair usually need a lot of VRAM and therefore sometimes not visable in IRAY viewport.

What I am trying to do is a lay down hair with https://www.daz3d.com/classic-long-curly-hair-with-dforce-for-genesis-8-females.

I tried diffrenet methods. I tried to use a wind node but the hair barely moves. I tried to decrease the collision offest and had some partial success but it only affected one layer (I think).

I tried animating my character so the initial position at keyframe 0 is from above and by the time it will hit the last keyframe it will hit a surface that and the hair suppose to be laid down. When I start animating it reaches 70 present after less then 1 minute, and than it starts doing trouble. I notice that the my CPU reaches 100 celsius (which is bad) and it throttles. But I don't understand why because I use my GPU to do the simulation. Can someone please explain what is happening? It doesn't stuck when I do a current frame. I only need the animation here to reach my desired pose of the hair.

If someone can suggest another method to reach the desired result, please do. But I rather understand what am I doing wrong or what I need to do.

My rig:

I7 9700k

RTX3070 8Gb

32 GB RAM

 

If you need more information please let me know.

Thanks,

Yoni

Spacious

That's a hair made with the dforce cloth engine, so it's basically layers of sheets with cutout opacity.  It's pretty difficult to do what you're trying to do because each sheet is going to more or less retain it's outline shape.  Maybe if you start the whole thing with the character hanging upside down, and as you rotate her into position, move the wood framing/floor (sorry I can't tell what it is exactly) up from below her rather than moving her down onto it.

This may be easier to accomplish with a Strand Based dForce hair like the ones you talk about sometimes not being visible in Iray preview, although that type of hair could present it's own difficulties.

dogcat

Thanks for the answer Spacious. Do you know why my CPU kicks in and cause DAZ to freeze?

Why it happens only when I try to animate the simulation?

Spacious

NO, I don't know why it's doing that.  Maybe try updating your GPU drivers and see if that helps.

WendyLuvsCatz

ate you trying to simulate this with the viewport in the iray view mode?

don't do that

even textured view can be pushing it

Ivy

Just my 2 cenets

Not all dforce hair is created equal when it comes to using it in animation, my experiences has been that all of Lindays Hair's products that are dforce have to be animated in very short segments 60key frame or less, & they are very heavy on GPU resources. one time when animating 30 key frame for a loop I have the Lindaylong classic  https://www.daz3d.com/classic-long-wavy-hair-with-dforce-for-genesis-8-females hair lock my system up completely having to do a hard shut down.

I'm surprised you have not experiences the linday hair sets blowing apart like i have usually around the 40 key frame mark the hair will start having issues.

 Like I said when it comes to animation use not all deforce hair is created equal. I had some success with 3d universe dforce hair in animation as long as it does not have to run longer than 300 keyframes then the hars appear to fall out..lol

example would be like in this video with the young girl you'll notice about 10 seconds into the scene the hair appears to fall out .

Then I have had some real good results using conforming hair props and adding in deforce modifiers to the pony tails the hair surface and keep the gravity around 0.8 and the pony tails will general react to the animation cycle .

such as in these couple of demo

\

 and the pony tail in this video as well

Other wise it that has been my experiences. that  takes a lot of gpu resources to animate long running animation cycles with deforce hair. if you render your animation in image sequences than animated hair 30 keyframes at a time is not big issue. because you can piece meal the hair animation cycles together

I had the same issues with dynaic hair as well so deforce is not new to the hair issue

 

 

dogcat

Thanks for the answers everyone.

And thanks Ivy for the detailed animations and explanation https://www.daz3d.com/classic-long-curly-hair-with-dforce-for-genesis-8-females is probably very heavy on pc resources.