cone , taper

cone, taper
general syntax:

cone{<x₁,y₁,z₁>,r₁,<x₂,y₂,z₂>, r₂
          texture{ ... ... }
        }

Here <x₁,y₁,z₁> und <x₂,y₂,z₂> are the coordinates of the centers of the both ends and r₁ and r₂ are the according radius.
If we chose for one on the both radius the value 0, you will get a cone with a tip at this end.

The samples here:


//---------------the golden cone ----------------
cone{<-1,2,-3>,1.0,<4,4,5>,0.0
      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 violet reflecting cone  ----------
cone{<0,0,0>,1.0,<0,2,0>,0.5 translate<2,0,0>
     texture{Polished_Chrome
             pigment{color rgb<1,0,0.5>}
             normal {crackle 0.5 scale 0.15}
             finish {ambient 0.15 diffuse 0.55 phong 1}
            }
    }//------------------------------------------------------

Tip:To buildt a cone which is parallel to one of the axis of the coordinatensystem but not in zero position, this can be done in a more difficult way but also in an easier way (see also "cylinder"):

The most times worse style:
Start and end point of the cone are definded by their final values
=> the length and the position is hard to understand!

cone{<4,2,2>,0.5, <4,2,5>,1.0
         texture{ ... ... } }

The better style much easier to understand is better done according to this
principle of construction:
1st step: modellizzing (length and radius) the body at zero and then
2nd step: moving the body to it's final position.
In this case the instructions better to understand would be the following :

cylinder{<0,0,0>,0.5, <0,0,3>,1.0
         translate<4,2,2>
         texture{ ... ... } }

Descriptions and Samples for the POV-Ray Raytracer by Friedrich A. Lohmüller

Basic Geometic Objectse

cone , taper