Rafal 'Raf256' Maj <raf### [at] raf256com> wrote:
> i have a triangle declared by w1, w2, w3 (w1=<x1,y1,z2> etc) how can I 
> calculate it's normal ?

  vcross(w2-w1, w3-w1)

-- 
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -

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