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vi_rus

Realistic Dynamic Fracturing with Bullet

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Hi rayman, thanks for the file, I learnt a lot.  However I have problem in understanding the time machine method.  I cannot figure out why the new pieces position need to be substracted from the sourcematrix translation component, and then why is the inital position of the new pieces given by the translation component of the inverted sourcematrix? Could you please explain this part ? Thank you very much~

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Oh,I've figured out the math, P *= invert(M) is equivalent to P = {0,0,0,1} * inverted(translate(M, -@P)).

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