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plane
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plane (semispace) general syntax: plane{< 0,1,0 >,0 rotate< ... > translate< ... > texture{ ... } }// ----Ende der Ebene |
Here Attention: The distance is messured in direction of the surface normal vector (attention to the sign!) and ony if the surface normal vector has a leght of 1 (a normed normal vector!) the distance is messured correctly in the base units! |
To change the position and orientation of the plane, we have to turn it by
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Sample 1: The plane plane{<0.25,0.75,0>, sqrt(1*1+3*3) ...}is easier to descripe by: plane{<1,3,0>,0 translate<1,3,0> ...} |
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Sample 2: The plane plane{<-1,-1,0>,-sqrt(18) ...}is i.e. identic with plane{<2,2,0>,3*sqrt(2) inverse ...}and it is easier to descripe by: plane{<-1,0,0>, 0 rotate< 0, 0, -45> translate<3,3,0> ...} |
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© Friedrich A. Lohmüller, 2004 email: (legacy email redacted) homepage: |