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Poser - OFFICIAL F.A.Q (Last Updated: 2024 Nov 21 6:06 am)



Subject: Possible to fake hair collision detection (and soft body dynamics)?


Zenman53186 ( ) posted Wed, 13 November 2002 at 5:43 PM ยท edited Fri, 02 August 2024 at 8:16 PM

Like many other people on this forum, I've been frustrated with the way P5 hair collision works (or doesn't work). The results are strange enough that the animations I have made so far look nothing near realistic. Hopefully an update will address it in the future. In the meantime, I was wanting feedback on the idea of faking hair collision with volumetric hair props (i.e. Kozaburo's Ponytail). I would think it would make sense that you could "clothify" the Pony part of the Ponytail prop and use cloth collision detection (which works much better than the hair counterpart) to get something a touch closer to animated hair. So I tried it. And found that every single hair prop I have (30 or so) either is unwelded and falls apart on draping, or has mesh intersections that make it unusable as cloth. I even tried the P4 Ponytail; close but no. So much for that idea.... Anyone have a "clean" ponytail mesh? A variation on this idea is the use of cloth dynamics for "soft body" simulation (i.e. a woman's breasts or a man's genitalia (please restrain the automatic puns and one liners...:-)). Create a prop of the item of choice, shrink or hide or transparent the corresponding item on the body, add the prop, clothify the prop, set the density very high (heavy leather), and animate. I haven't gotten through the entire effort on this, but I think it should be possible. Any thoughts?


praxis22 ( ) posted Wed, 13 November 2002 at 6:14 PM

I was thinking that when watching one of Billy-T's videos featuring the P5 china dress...


Routledge ( ) posted Thu, 14 November 2002 at 4:29 AM

I did try the breast on Victoria as a cloth and it worked fine, deforming very nicely and bouncing when animated but it turned out to be useless in an animation as it "turned off" the rest of the arm for collision detection and deformed the joint from collar to shoulder, even though this area of the collar wasnt clothified. Encouragingly the figure was able to be saved and reloaded with the cloth settings in place. I suspect there are possibilites here but its beyond my technical knowledge to go further.


Zenman53186 ( ) posted Thu, 14 November 2002 at 11:17 PM

Routledge, it sounds as if you clothified the actual Victoria model? My suggestion was to create a separate prop of the breasts, and attach them back to Victoria. You can make them with the grouping tool: select the breast polygons you want, click on Make Prop, and wallah! Breasts you can slap on anything. You then make Victoria's nonexistant by setting the "NoBreast" or "MaleBreast" morph, apply the breast prop, parent it to the chest, make the virtices along the edge against the body "constrained" so that they don't move, clothify and go. Should be no effect on the rest of Victoria. I'm afraid I've spent the last couple days in the Material & Hair rooms, so haven't explored this any further (but I will!).


Routledge ( ) posted Fri, 15 November 2002 at 9:18 AM

Zenman, it sounds good. I had thought of propping the entire collar but a prop wouldn`t stretch like the figure. A partial prop of the breast only sounds a much better idea. It should even keep the texture mapping intact. It is frustrating as the Victoria experiment was only one step off being perfect.


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