Brillant ! On Thu, Sep 10, 2015 at 9:22 AM, Oscar Juarez <tridi.animei...@gmail.com> wrote:
> Get closest location to the grid, subtract this location position from the > particle position, dot product to the location normal, depending on the > value you can know if it's back face or front face. > On Sep 10, 2015 8:58 AM, "Olivier Jeannel" <facialdel...@gmail.com> wrote: > >> That's something I've wondered for while and since I'm waiting in a >> starbuck... >> Let's say you have a fied of particles. In the middle of the field you >> put a grid. >> How do I recognize the particles that are on the front side and the >> particles that are on the back side of the grid ? >> >> :) >> >
