I haven't used ICE in 6+ years so I can't tell exactly how to do it in there but assuming that you have access to a random function returning uniform distributions in the range 0 to 1, it would be as simple as:
ratio = 0.6 do_select = rand(particle_id + some_sort_of_seed) < ratio A random function with uniform distributions (the default implemetation in CG softwares) means that the generated numbers are evenly distributed across the 0 to 1 range, so you've got 60% of chance to end up with a number comprised between 0 and 0.6, and 40% of chance to have it between 0.6 and 1. On 11 April 2016 at 15:57, Olivier Jeannel <[email protected]> wrote: > Hi guys, > > This is a case that keeps coming every once in a while. I'm scratching my > head on it this morning. > In Ice, lets say you have 10 particles, and you want to "select" 60% of > them randomly. > ("select" means 60% with an attribute of 1, and 40% with an attribute of 0) > > > How would you do that ? > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to [email protected] > with "unsubscribe" in the subject, and reply to confirm. > -- Christopher Crouzet *http://christophercrouzet.com* <http://christophercrouzet.com>
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