Fiber guides and Texture UV's

Forums: Fiber guides and Texture UV's
Newtek Lightwave 3D (exporter developed by holocube, Integrated Plugin developed by juanjgon)

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Fiber guides and Texture UV's

Postby mstewart152 » Thu Mar 15, 2018 2:07 am

mstewart152 Thu Mar 15, 2018 2:07 am
Is there any way to tell Octane to Use a color texture to dictate fiber color while using guides. I know this works when just applying fibers to a mesh with out using modeled fiber guides, but when you do it that way you can not apply any dynamics.

The end result I've been trying to get to is Dynamic colored fur on a character. I have so far been able to either or, but not both. If I could just get the color texture to dictate fiber color, I'de be good to go....

The closest thing i have gotten to work is the technique in the 2018 furry tail demo scene. It uses layout generated fibers with control guides, and octane can pull the color data... BUT...... and this is a big BUT, and Lightwave failure...... when you use those kinds of dynamic guides, from the (polygonize mixed) cammand in fiber fx, it is only usable on very small poly count models.... basically useless on any production model. Hense why I am back to using modeled traditional guides, because you can use a lot of them and sim them........ but then you get no color control........ need to bring these two worlds together!

an ideas?

Thanks!
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Re: Fiber guides and Texture UV's

Postby mstewart152 » Thu Mar 15, 2018 4:58 pm

mstewart152 Thu Mar 15, 2018 4:58 pm
basically all I need octane to do is be able to to use the color of the texture from UV'ed guides... so that it picks the color from the root of the fiber..... meaning the root of the fiber will be in the right UV space of the texture.... Is this possible somehow?
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Re: Fiber guides and Texture UV's

Postby juanjgon » Thu Mar 15, 2018 9:43 pm

juanjgon Thu Mar 15, 2018 9:43 pm
Hi,

How are you rendering the fiber guides? If you render them as polygonal hair, the UV value of the root vertex is going to be extracted by the plugin.
https://docs.otoy.com/Lightwave3DH/Ligh ... neHair.htm

Thanks,
-Juanjo
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Re: Fiber guides and Texture UV's

Postby mstewart152 » Fri Mar 16, 2018 3:30 pm

mstewart152 Fri Mar 16, 2018 3:30 pm
is this functionality confirmed to work in 2018?
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Re: Fiber guides and Texture UV's

Postby mstewart152 » Fri Mar 16, 2018 7:16 pm

mstewart152 Fri Mar 16, 2018 7:16 pm
cant seem to get this to work the same way in 2018. regarding root vertex pulling color data. Works in 2015 though.
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Re: Fiber guides and Texture UV's

Postby mstewart152 » Fri Mar 16, 2018 8:04 pm

mstewart152 Fri Mar 16, 2018 8:04 pm
found another bug in 2018.... when you try and open a subpatched model with fibers on it in IPR, it crashes......

Another crash is when you have fiberfx applied to a model, but have it unchecked in the panel so it doesnt load, when you open IPR it will crash.

these occur when using Polygonized guides... not sure about other modes yet.
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Re: Fiber guides and Texture UV's

Postby juanjgon » Sat Mar 17, 2018 12:21 pm

juanjgon Sat Mar 17, 2018 12:21 pm
mstewart152 wrote:cant seem to get this to work the same way in 2018. regarding root vertex pulling color data. Works in 2015 though.

Can you send me a test scene to reproduce this problem here? I'll try to check it here, but with your scene I could be sure that we are using the same workflow.

Thanks,
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Re: Fiber guides and Texture UV's

Postby mstewart152 » Mon Mar 19, 2018 5:00 pm

mstewart152 Mon Mar 19, 2018 5:00 pm
here is a test scene... FIberfx is in-active... crashes when doing F9 render.
Attachments
Lemur_packaged.zip
(2.03 MiB) Downloaded 109 times
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Re: Fiber guides and Texture UV's

Postby mstewart152 » Mon Mar 19, 2018 6:26 pm

mstewart152 Mon Mar 19, 2018 6:26 pm
here is a fiber ball test using normal modeler guides, with uv's root vertex's..... can't get them to pick up texture correctly.
Attachments
fiber_ball_test.zip
(33.34 KiB) Downloaded 106 times
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Re: Fiber guides and Texture UV's

Postby juanjgon » Wed Mar 21, 2018 12:16 am

juanjgon Wed Mar 21, 2018 12:16 am
Sorry for the late reply. I'm still investigating the problems that you can see in the attached scenes. I hope to know more details soon.

Thanks!
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