Renderotica

I've had similar issues with thong or string style pieces. Though I currently don't have access to MD. I use the subscription version. I remember that anything smaller than 20 mm wide will slip into the mesh of the avatar in that area.

There are a couple ways to fix it, depending on your MD Version and if your using the supplied MD Avatars or imported Avatars.

The most resent version of MD added a feature that can smooth the avatar, basically subdivides the polys. Click on any part of the avatar in the 3D view, then look in the Properties pane. Avatar smoothing should be at the bottom. Though I'd be careful doing this, especially if you save as a Project. As it reloads the smoothed Avatar, but doesn't save the smoothed value in the Property Pane. Also may try adjusting the collision offset to the avatar.

It may also be a case of too much tension from the crotch area to the top of the back part of the bottom. Could try lengthening it a bit. Also if it's a single piece in the pattern window you can add an internal line and adjust the fold strength and degree. If it's a stitched (2 pieces) you can adjust the fold strength and degree with the Edit Sewing.

Sorry I can't be much help with the MD supplied Avatars, since I don't use them, and don't remember if the "cheeks" of the bottom actually collide.

I know that my imported Genesis 3 and 8 Models the glutes part of the mesh actually intersect causing some serious "Collision Confusion". the best way I found to fix that is before I export the model I use a morph that spreads them. Then I export it and create an Avatar with a more open space back there. It's not really realistic, I know, but it's the only fix I found to eliminate the "Collision Confusion". From what I've figured out is if the polys of the avatar are intersecting or even too close together (Sharp Bends) it causes problems.

Oh, just remembered, you can also try decreasing the Particle Distance of your Pattern as well. Decreasing the particle distance increases the poly count and sewing threads of the pattern, unfortunately this also increases the resources needed to simulate the Draping (or lack of in this case).

Hope this was helpful, without having my subscription on this is the best I can do from memory, which is not very good even on good days. lol

Ok, well I restarted my MD subscription today, so may be able to find some more solutions. Probably won't be making an all out tutorial. More like a Tips and Tricks.

I have a couple questions about your project. These are mainly so I can try and recreate it and see the problems. Though I'll probably start working on something without these answers, simply because it's been nagging at me since I 1st saw the topic. lol

1) Are you using the most current version of MD?

2) Are you using a MD avatar (Supplied with program) or an Imported Avatar (like Genesis 3 or 8)?

That's pretty much all for MD and the Avatar.

3) Do you happen to know who makes or sells the bikini pictured, Wicked Weasel, ALS Scans, and so on, may have more images of the bikini?

Like I said I'll probably start on something similar as well as research more on the actual bikini pictured.

They didn't add the Avatar Smoothing till 7.5, I believe. I think we can manage without it.

Well I did a sort of Quick and Dirty pattern still requires some tweaking, no rings or buckles, but here's what I came up with using my G8 Base with Glute Spread. I did smooth it once, but I'll go back and reload the avatar with out it.

Draxin attached the following image(s):

Originally Posted by: Draxin

Well that's what came up with for the time being, unfortunately at the moment I don't have an Avatar created for MD with genitals. It's in the works though. lol

The strings of what I made are actually 10 mm wide, I'll tinker around with it some more and see if I can get it closer to the pic.

Just 10 mm default fabric w/o any tricks? What will happen if an avatar with normal glute put those already made bikini on?

As for the smoothing from what I see on MD 7.5 new features this is just subdivision. I presume it will make serious difference if you export Daz model with base mesh resolution but if it is in high resolutions (and both G3 and G8 are in high resolution by default) , it will not make any visible difference.

Edited by user Sunday, July 15, 2018 7:43:44 AM(UTC)  | Reason: Not specified

About the normal glute - the rule of thumb says the patterns should not *start* inside the mesh - but if you put the backstring *inside* the mesh where it should be and freeze it? So it actually not to be subject of the simulation at all?

Also when I try to sew etc the strings (i tried to pile them too) they twists too - although I tried to make the fabric very thick. From what I see from the other similar bikinis the strings there are not simple fabric strips.

PS. I've seen string models where the backstring is quite loose.

Edited by user Sunday, July 15, 2018 6:53:05 AM(UTC)  | Reason: Not specified

Here it is. Far from PRO-design but it is a nice start I hope. Put leather as material and made it from just 2 patterns for standard panties (back and front) by cutting off the unwanted cloth. The thong is simulated for an yoga poster babe pose, so they are a little bit tilted in left.

Edit: Next installment - the last one.
 

Edited by user Wednesday, October 3, 2018 9:53:19 AM(UTC)  | Reason: Not specified

Lednah attached the following image(s):