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sphere
general syntax:
sphere{ <xM,yM,zM>, r
texture{ ... ... }
} |
In this case <xM,yM,zM>
are the coordinates of the center and r is the radius.
The examples here:
sphere{< 0,0, 0>,1.0 texture{...}}
sphere{<-1,2,-3>,1.0 texture{...}}
sphere{< 2,3, 5>,1.0 texture{...}} |
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If a sphere has to be deformed by "scale< , , >" to a ellipsoid,
it's recommanded to do this according to the following
principle of construction:
1st step: Deforming the shape at the origin of the coordinates "<0,0,0>" by "scale< , , >" and then
2nd step: Moving the shape to it's final position in the world by "translate< , , >".
Because the "scale< , , >" works always relative to the center "<0,0,0>" it's recommanded to do it before translating!.
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sphere + scale<...> = ellipsoid
general syntax:
sphere{ <xM,yM,zM>, r scale<sx,sy,sz>
texture{ ... ... }
} |
Here <xM,yM,zM>
are the center coordinates, r is the radius and
sx,sy,sz
are scale factors in x-, y- and z-direction.
Examples here:
sphere{<0,0,0>,1.0 scale<2,0.4,1>
translate< 0,0, 0> texture{...}}
sphere{<0,0,0>,1.0 scale<1,1,2>
translate<-1,2,-3> texture{...}}
sphere{<0,0,0>,1.0 scale<1,1,0.2>
translate< 2,3, 5> texture{...}} |
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