TUD Organische Chemie

Immel

Graphics

Povray 3.5

macro1

View or Print (this frame only)

Example Graphics

(low quality jpg-image only)

Example file (macro1.pov):

// Persistence Of Vision Ray Tracer POV-Ray 3.5 sample Scene
// by Chris Young
// MACRO1.POV demonstrates basic use of a macro. Defines
// a macro called Make_Many which takes an object and
// makes many copies of it rotated about a particular axis.

#include "colors.inc"

light_source { <1000,1000,-1000>, White}

camera { location <3,3,-10> direction 2*z look_at <0,0,0>}

union {
plane{y,-2} plane{-z,-10} plane{x,-10}
pigment{checker Cyan,Yellow}
}

// Define the macro. Parameters are:
// Stuff: The stuff to be multiplied and rotated
// How_Many: Number of copies to make
// Axis: The axis about which we'll rotate the copies.
#macro Make_Many (Stuff,How_Many,Axis)
#local Count=0; // this identifier is local and
// temporary to this macro
#while (Count object{Stuff rotate Axis*Count*(360/How_Many)}
#local Count=Count+1;
#end
#end

#declare Thing = cylinder{0,x,0.1}

union {
Make_Many (Thing,4,z) // Make 4 things rotated about z
pigment{Red}
translate -2.25*x
}

union {
Make_Many (Thing,6,z) // Make 6 things rotated about z
pigment{Blue}
}

union {
Make_Many (Thing,6,y) // Make 6 things rotated about y
pigment{Green}
translate 2.25*x
}