prism
general syntax:
prism{ y1, y 2, n
< x1, z1 >,
< x2, z2 >,
< x3, z3 >,
...
< xn-1, zn-1 >,
< x1, z1 >
texture{ ... }
} |
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By "y1" und "y2"
are definded the start and end values of the ortogonal prism in y direction and
"n" is the number of the following coordinates of the outline in the xz-plane.
This outline is defined by a serie of coordinates of points
< x1, z1 >,
< x2, z2 >,
< x3, z3 >, ... ,
< xn-1, zn-1 >,
< x1, z1 > in the xz-plan.
Please keep in mind: the last point of this outline has to be the same as the first point,
this means that the line around the profile has to be closed! I.e. with 5 points you need to notate
n = 6 coordinates, because the first point must be repeeted at the end!
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To change the position and orientation of the prism, you have to
"rotate< , , >" and "translate< , , >"
it.
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Sample 1:
// white prism
// at zero:
prism{ 0.00, 1.00, 4
<-1.00, 0.00>,
< 1.00, 0.00>,
< 0.00, 2.00>,
<-1.00, 0.00>
texture{
pigment{color White}
finish {ambient 0.15
diffuse 0.85}
} // texture
}// end of prism
// violet prism
// right:
prism{ 0.00, 1.00, 4
<-1.00, 0.00>,
< 1.00, 0.00>,
< 0.00, 2.00>,
<-1.00, 0.00>
texture{
pigment{color Plum}
finish {ambient 0.15
diffuse 0.85}
} // texture
rotate<-90,0,0>
translate<3,0,0>
}//end of prism
//----------------------- |
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Sample 2:
// white prism
// at zero:
prism{ -2.00, 2.00, 6
<-1.00, 0.00>,
< 1.00, 0.00>,
< 1.00, 1.00>,
< 0.00, 2.00>,
<-1.00, 1.00>,
<-1.00, 0.00>
texture{
pigment{color White}
finish {ambient 0.15
diffuse 0.85}}
}// end of prism
// violet prism
// right ---------
prism{ -2.00, 2.00, 6
<-1.00, 0.00>,
< 1.00, 0.00>,
< 1.00, 1.00>,
< 0.00, 2.00>,
<-1.00, 1.00>,
<-1.00, 0.00>
texture{
pigment{color Plum}
finish {ambient 0.15
diffuse 0.85}}
rotate<-90,0,0>
translate<3,0,0>
}//end of prism
//----------------------- |
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