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How to do Cutting Animations and States?

SuperSparkplug
polycounter lvl 9
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SuperSparkplug polycounter lvl 9
Hi there,

For a while I've been interested in how games like Fruit Ninja and Metal Gear Rising Revengence performed the act of cutting things in half, showing the inner part of the 3D model and spliting it into two or more meshes. I've tried looking it up and haven't exactly found much in the way of how to do it either in Maya or programatically in a game engine (eg Unity).

FruitNinja_screenshot.png

Coincidentally, the manager of my workplace is interested in exploring how to do this and tasked me today with figuring out how to do that. I've looked up and have read a few things on how it might be done in general and certain interesting details (via Platinum Games' Blog and a few other sources), but I still can't find anything on how to do it or at least in a manageable way.

Can anyone describe to me how or where exactly I can learn how to animate or program the cutting of 3D meshes that splits the mesh and exposes inner geometry which normally doesn't exist?

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