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{ SCCSid "$SunId$ LBL" } |
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{ RCSid $Id$ } |
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{ |
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Initialization file for Radiance. |
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Kx, Ky, Kz - world k unit vector |
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arg(n) - real arguments, arg(0) is count |
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For mesh objects, the following are available: |
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Lu, Lv - local (u,v) coordinates |
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For brdf functions, the following are also available: |
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NxP, NyP, NzP - perturbed surface normal |
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and(a,b) : if( a, b, a ); |
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or(a,b) : if( a, a, b ); |
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not(a) : if( a, -1, 1 ); |
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xor(a,b) : if( a, not(b), b ); |
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abs(x) : if( x, x, -x ); |
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sgn(x) : if( x, 1, if(-x, -1, 0) ); |
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sq(x) : x*x; |
