Basic Geometic Objects

torus = tube, ring

torus, ring
general syntax:

torus{ r_major,r_minor
        texture{ ... ... }
        }

In this definition r_major is the big radius and r_minor is the little radius. The torus is placed by default in the xz-plane (horizontal) with the y-axis as the axis of it's rotation symmetry.

If another position is needed the torus must be transformed by "rotate< , , >" and "translate< , , >" .
The radius of the outline is calculated by
r_total= r_major +r_minor .
The radius of the hole in the middle of the torus is
r_inside= r_major -r_minor .

The sample here:


//--------------- the yellow torus in the middle: ------------------
torus {1.0,0.25 scale <1,1,1> rotate<0,0,0> translate<0,0,0>
       texture{pigment{color rgb<1,0.65,0>}
               finish {ambient 0.15 diffuse 0.85 phong 1}}}
//--------------- the golden torus right in the background: --------
torus {1.0,0.25 scale <1,3,1> rotate<90,0,0> translate<4,3,2>
       texture{Polished_Chrome
               pigment{color rgb<1,0.8,0>}
               normal {bumps 0.5 scale 0.15}
               finish {ambient 0.15 diffuse 0.55 phong 1}}}
//---------------the flat silver ring on the left: -----------------
torus {1.0,0.65 scale <1.5,0.33,1> rotate<0,0,90> translate<-1,3,-2>
       texture{Polished_Chrome
               pigment{color rgb<1,1,0.5>}
               normal {bumps 0.5 scale 0.15}
               finish {ambient 0.15 diffuse 0.55 phong 1}}}
//------------------------------------------------------------------

Descriptions and Examples for the POV-Ray Raytracer by Friedrich A. Lohmüller Geometric Shapes in POV-Ray

Basic Geometic Objects

torus = tube, ring

Descriptions and Examples for the POV-Ray Raytracer by Friedrich A. Lohmüller
Geometric Shapes in POV-Ray