70-413
I have as a result is a function one sphere right hemisphere right time how much light is incident for this little patch right here so if you think about that we now have a function on a sphere meeting know how to think about functions on spheres I am we have very nice tools from I am spear Bihar much for doing 70-413 that so in computer graphics community and in particular from a morphine Harahan in 2001 show that company if you think about complex lighting as functions atmosphere you can model them with the spherical harmonics so these are basically the 4e basis atmosphere and set up on a line running on a planes.
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