User:Le Forgeron/gsd

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GSD : Generalised Symmetric Difference

RANGE: (NUMBER|VECTOR)[,RANGE]
VECTOR: <NUMBER, NUMBER>
NUMBER: number of intersection, negative number are added to total number of object+1

The minimal number of objects is three.

Interunion

syntax is

interunion { 
  OBJECTS...
  [range{ RANGE } ]*
  [OBJECT_MODIFIERS...] 
 }

#version 3.7; global_settings { assumed_gamma 1.0 } camera { location -560*z direction z up y right image_width*x/image_height angle 5 } #include "colors.inc" interunion{ #for(i,0,359.99,60) #local pos= vrotate(6*x,i*z); cylinder { pos-z,pos+31*z,10 texture { pigment { color CH2RGB(i) filter 0.45 } } } #end range { <2,4> } clipped_by {cylinder { 30*z,0, 20 } } } box { 30*z-20*x-20*y, 30*z+20*x+20*y texture { pigment { color White }}} light_source { 10*<0,0,-20>, 0.9 } light_source { 10*<-5,10,-50>, 0.9 } light_source { 10*<-10,10,-50>, 0.9 } light_source { 10*<5,10,-50>, 0.9 } light_source { 10*<10,10,-50>, 0.9 }

Intermerge

syntax is

intermerge { 
  OBJECTS...
  [range{ RANGE } ]*
  [OBJECT_MODIFIERS...] 
 }

#version 3.7; global_settings { assumed_gamma 1.0 } camera { location -560*z direction z up y right image_width*x/image_height angle 5 } #include "colors.inc" intermerge{ #for(i,0,359.99,60) #local pos= vrotate(6*x,i*z); cylinder { pos-z,pos+31*z,10 texture { pigment { color CH2RGB(i) filter 0.45 } } } #end range { <2,4> } clipped_by {cylinder { 30*z,0, 20 } } } box { 30*z-20*x-20*y, 30*z+20*x+20*y texture { pigment { color White }}} light_source { 10*<0,0,-20>, 0.9 } light_source { 10*<-5,10,-50>, 0.9 } light_source { 10*<-10,10,-50>, 0.9 } light_source { 10*<5,10,-50>, 0.9 } light_source { 10*<10,10,-50>, 0.9 }