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Constructs an EDF emitting light inside a cone around the normal direction.
Radiant emittance of light leaving the surface. Default is (1, 1, 1).
Normal vector of the surface. Defaults to world space normal.
Angle of inner cone where intensity falloff starts (given in degrees). Defaults to 60.
Angle of outer cone where intensity goes to zero (given in degrees). If set to a smaller value than inner angle no falloff will occur within the cone. Defaults to 0.