Gli spigoli
12 cilindri… di 4 colori
#include "colors.inc"
cylinder{ < 1, 1, 1> < 1, 1,-1>, 0.1 pigment{ color Blue } }
cylinder{ < 1, 1, 1> < 1,-1, 1>, 0.1 pigment{ color Blue } }
cylinder{ < 1, 1, 1> <-1, 1, 1>, 0.1 pigment{ color Blue } }
cylinder{ < 1,-1,-1> < 1, 1,-1>, 0.1 pigment{ color Cyan } }
cylinder{ < 1,-1,-1> < 1,-1, 1>, 0.1 pigment{ color Cyan } }
cylinder{ < 1,-1,-1> <-1,-1,-1>, 0.1 pigment{ color Cyan } }
cylinder{ <-1,-1, 1> <-1, 1, 1>, 0.1 pigment{ color Green } }
cylinder{ <-1,-1, 1> < 1,-1, 1>, 0.1 pigment{ color Green } }
cylinder{ <-1,-1, 1> <-1,-1,-1>, 0.1 pigment{ color Green } }
cylinder{ <-1, 1,-1> < 1, 1,-1>, 0.1 pigment{ color Yellow } }
cylinder{ <-1, 1,-1> <-1, 1, 1>, 0.1 pigment{ color Yellow } }
cylinder{ <-1, 1,-1> <-1,-1,-1>, 0.1 pigment{ color Yellow } }
camera { location<0,0,-4> look_at<0,0,0> }
light_source{ <0,0,-4> color White }
Spigoli e vertici
12 cilindri + 8 sfere
#include "colors.inc"
cylinder{ < 1, 1, 1> < 1, 1,-1>, 0.1 pigment{ color Blue } }
cylinder{ < 1, 1, 1> < 1,-1, 1>, 0.1 pigment{ color Blue } }
cylinder{ < 1, 1, 1> <-1, 1, 1>, 0.1 pigment{ color Blue } }
cylinder{ < 1,-1,-1> < 1, 1,-1>, 0.1 pigment{ color Cyan } }
cylinder{ < 1,-1,-1> < 1,-1, 1>, 0.1 pigment{ color Cyan } }
cylinder{ < 1,-1,-1> <-1,-1,-1>, 0.1 pigment{ color Cyan } }
cylinder{ <-1,-1, 1> <-1, 1, 1>, 0.1 pigment{ color Green } }
cylinder{ <-1,-1, 1> < 1,-1, 1>, 0.1 pigment{ color Green } }
cylinder{ <-1,-1, 1> <-1,-1,-1>, 0.1 pigment{ color Green } }
cylinder{ <-1, 1,-1> < 1, 1,-1>, 0.1 pigment{ color Yellow } }
cylinder{ <-1, 1,-1> <-1, 1, 1>, 0.1 pigment{ color Yellow } }
cylinder{ <-1, 1,-1> <-1,-1,-1>, 0.1 pigment{ color Yellow } }
sphere{ < 1, 1, 1> 0.2 pigment{ color Red } }
sphere{ < 1, 1,-1> 0.2 pigment{ color Red } }
sphere{ < 1,-1, 1> 0.2 pigment{ color Red } }
sphere{ < 1,-1,-1> 0.2 pigment{ color Red } }
sphere{ <-1, 1, 1> 0.2 pigment{ color Red } }
sphere{ <-1, 1,-1> 0.2 pigment{ color Red } }
sphere{ <-1,-1, 1> 0.2 pigment{ color Red } }
sphere{ <-1,-1,-1> 0.2 pigment{ color Red } }
camera { location<0,0,-4> look_at<0,0,0> }
light_source{ <0,0,-4> color White }
Punto di vista
L’osservatore si sposta a sinistra, in alto
...
camera { location<-4,2,-3> look_at<0,0,0> }
light_source{ <-4,2,-3> color White }
Macro
La libreria shapes.inc contiene una macro per un box wireframe.
I parametri specificano i due vertici opposti e il raggio dei cilindri e delle sfere utilizzate.
#include "shapes.inc"
#include "colors.inc"
object{ Wire_Box_Union(<-1,-1,-1>, <1,1,1>, 0.1) pigment{ color White } }
light_source{ <0,0,-4>, color White }
camera{ location<0,0,-4> look_at<0,0,0> }
Cubi wireframe
I cubi sono centrati nell’origine e poi traslati.
Il raggio permette di modificare lo spessore dei tubi.
#include "shapes.inc"
#include "colors.inc"
object{ Wire_Box_Union(<-1,-1,-1>, <1,1,1>, 0.2) pigment{ color Red } translate<-2, 0.5,0.5> }
object{ Wire_Box_Union(<-1,-1,-1>, <1,1,1>, 0.3) pigment{ color Green } translate< 0, 0.5,0.5> }
object{ Wire_Box_Union(<-1,-1,-1>, <1,1,1>, 0.2) pigment{ color Blue } translate<+2, 0.5,0.5> }
object{ Wire_Box_Union(<-1,-1,-1>, <1,1,1>, 0.1) pigment{ color Cyan } translate<-1,-0.5,0 > }
object{ Wire_Box_Union(<-1,-1,-1>, <1,1,1>, 0.1) pigment{ color Magenta } translate<+1,-0.5,0 > }
light_source{ <0,1,-6>, color White }
camera{ location<0,1,-6> look_at<0,0,0> }
Cubo 4D
Due cubi wireframe collegati con 8 cilindri.
#include "shapes.inc"
#include "colors.inc"
object{ Wire_Box_Union(<-2.1,-2.1,-2.1>, <+2.1,+2.1,+2.1>, 0.1) pigment { color Cyan } }
object{ Wire_Box_Union(<-1.1,-1.1,-1.1>, <+1.1,+1.1,+1.1>, 0.1) pigment { color Magenta } }
cylinder{ <-2,-2,-2> <-1,-1,-1>, 0.1 pigment{ color Yellow } }
cylinder{ <-2,-2,+2> <-1,-1,+1>, 0.1 pigment{ color Yellow } }
cylinder{ <-2,+2,-2> <-1,+1,-1>, 0.1 pigment{ color Yellow } }
cylinder{ <-2,+2,+2> <-1,+1,+1>, 0.1 pigment{ color Yellow } }
cylinder{ <+2,-2,-2> <+1,-1,-1>, 0.1 pigment{ color Yellow } }
cylinder{ <+2,-2,+2> <+1,-1,+1>, 0.1 pigment{ color Yellow } }
cylinder{ <+2,+2,-2> <+1,+1,-1>, 0.1 pigment{ color Yellow } }
cylinder{ <+2,+2,+2> <+1,+1,+1>, 0.1 pigment{ color Yellow } }
light_source { <0,4,-6>, color White }
camera { location<0,4,-6> look_at<0,0,0> }
Bisogna aumentare di poco le dimensioni dei cubi per farli combaciare con i cilindri di collegamento.