I used the VisBool shader from Holger Schönberger on a similar project last year. Worked great but the model was simple and had no inner structure. Nice thing is, you can use the round corners shader with it. Animated pseudo booleans with perfect bevels. The difficulty however is you need extra materials for the intersection "geo" and they have to get connected to the corresponding shader (on the uncut geo). Not a big thing if you have only a few objects but can be tedious with lots of objects all having different materials. I think is doesn't have any kind of automated UV handling. Maybe you can cheat with texture supports that stays fixed in space, having the render time intersections crawl through it to give it some kind of structure that changes during animation.
Not sure if this is suitable for you needs. sven From: [email protected] [mailto:[email protected]] On Behalf Of Olivier Jeannel Sent: Saturday, September 17, 2016 7:33 AM To: softimage@listproc autodesk. com Subject: Re: Volume/voxel construction/deconstruction I'd go houdini on this one too. In SI there's the Knife tool where you can attach a grid to it. It cut cleanly the object, but you don't have the inside. Le 16 sept. 2016 20:07, "Steven Caron" <[email protected]> a écrit : Which renderer? I think Holger had his visbool shader working in MentalRay and Arnold. For a renderer agnostic route you are going to need to do some sort of booleans, obviously those can be tricky and crash a lot. There is VDB tools from Oleg which doe CSG operations on levelsets and of course Houdini's VDB tools if you have access to it. Shading is going to be tricky if you need to transfer UVs to the VDB. Oleg's tools don't have that functionality but Houdini does. Steven On Fri, Sep 16, 2016 at 8:57 AM, Adam Seeley <[email protected]> wrote: Hi all, Just thought I'd tap into the collective thought process to see if anyone had seen techniques to do this before. I'm looking at creating an effect where an object dissolves away but cleanly, so I need to show a cutaway section of the object (e.g. tomato), but one that moves through the object. A bit like a ct scan, but in full colour, so we see the various internal construction of the parts of teh object like the fibres within the flesh of the object. ------ Softimage Mailing List. To unsubscribe, send a mail to [email protected] with "unsubscribe" in the subject, and reply to confirm. ------ Softimage Mailing List. To unsubscribe, send a mail to [email protected] with "unsubscribe" in the subject, and reply to confirm.
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