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LightWave + Houdini

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I've read Calosus's post about houdini + lightwave.

I also have interest on H + LW cooperation.

What I want to accomplish is,

level 1. import LW object, tweak surface by Houdini operators, put the obj back to LW.

level 2. import LW animation, build particles on LW surface by POP, render on vexMantra.

level 3. same as above, but sending back the animation to LW, render on LW.

What a way to go. I wonder how tough this would be.

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Task 1 was a easy one.

You can import .obj by FileSOP. Export by GeometryROP.

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I'm working on Task 2 now.

Can anyone point me to LW scene file description?

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I made y position key frames.

Below is excerpts from LW scene file.

Channel 1 # (position.y channel)

{ Envelope

4 # (4 keys are here)

Key -0.0022952184 0 0 0 0 0 0 0.52419209 0

Key 0.52215385 0.56666666 0 0 0 0 0.029732581 0.031481557 0

Key 0.058918919 1.1666666 0 0 0 0 -0.28369987 -0.23641656 0

Key 0.002037422 1.6666666 0 0 0 0 -0.056849912 0 0

Behaviors 1 1 # (meaning pre/post behavior is constant)

}

ss_curve.gif

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Hmm ... you might be able to take those Key commands and change them into chkey commands. See "help chkey". Also, don't forget "help chadd"

dante

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you could dump out a series of .rib files and import the scene into Houdini using Martian Glue...

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No need for that. We should be, at least I am, concentrating on making a MOT (LWMOT; a.k.a. LightWave Motion) interpreter. Really, just automating the manual conversion between LW and Houdini.

And importing objects with textures shouldn't be such a big deal. Since LW6.* finally supports UV-mapping. And since LW7.* you can export LWO's (or OBJ's) with maps intact aswell!

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Ok. How about brining LW model in to Houdini? I have a couple of .lwo files and I don't have LightWave to save them as an .obj

Are there any scripts floating around that would perform conversion?

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I've had some success converting .LWO files into .OBJ for importing into Houdini using Deep Exploration (and just with the demo copy none less :).

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