Illumination and Shading
[prev][next]
Subpages: [0] [1] [2] [3]

Light Source Energy

Illumination from a light source depends on the solid angle [omega] subterded by that light source

[omega] = [integral]2[pi] ( [integral]tan-1(r's / r0) ( sin [theta] d[theta] d[phi] ) ) = 2[pi] (1 - cos (tan-1 rs/r0))
sometimes approximated by
= [pi] rs/r0 when rs/r0 << 1

Incident energy:
El = Il (N.L) d[omega]
Subpages: [0] [1] [2] [3]
[prev][next]
Made by dynaPage 0.2