Fitxategi:Hexahedron.jpg

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Nabigaziora joan Bilaketara joan
Jatorrizko fitxategia (742 × 826 pixel, fitxategiaren tamaina: 51 KB, MIME mota: image/jpeg)

Fitxategi hau Wikimedia Commons biltegikoa da, eta beste proiektu batzuetan erabil daiteke. Behean dago fitxategiaren deskribapeneko orria.

Laburpena

Deskribapena
English: A Hexahedron (cube). A regular polyhedron.
Jatorria see below
Egilea The original uploader was Cyp at ingelesa Wikipedia.
File:Hexahedron.svg fitxategi honen bektore bertsioa da. Hau rasterizatutako bertsioaren ordez erabili beharko litzateke hobea izatekotan.

File:Hexahedron.jpg → File:Hexahedron.svg

Grafiko bektorialei buruzko informazioa lortzeko, irakurri SVGra trantsizioa Commonsen.
MediaWikiko SVG irudien inguruko laguntza teknikoa ere badago.

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SVG irudi berria

Lizentzia

GNU head Baimena duzu dokumentu hau kopiatu, banatu edo/eta aldatzeko GNU Free Documentation License baldintzapean, Free Software Foundationek argitaratutako 1.2 edo ondorengo bertsioan; sekzio aldaezinik gabe, azaleko testurik gabe, eta atzeko azaleko testurik gabe. Lizentziaren kopia dago GNU Free Documentation License izenburudun atalean.
w:eu:Creative Commons
eskuduntza berdin partekatu
Fitxategi hau Creative Commons Attribution-Share Alike 3.0 Unported lizentziapean dago.
Askea zara:
  • partekatzeko – lana kopiatzeko, banatzeko eta bidaltzeko
  • birnahasteko – lana moldatzeko
Ondorengo baldintzen pean:
  • eskuduntza – Egiletza behar bezala aitortu behar duzu, lizentzia ikusteko esteka gehitu, eta ea aldaketak egin diren aipatu. Era egokian egin behar duzu hori guztia, baina inola ere ez egileak zure lana edo zure erabilera babesten duela irudikatuz.
  • berdin partekatu – Lan honetan oinarrituta edo aldatuta berria eraikitzen baduzu, emaitza lana hau bezalako lizentzia batekin argitaratu behar duzu.
This licensing tag was added to this file as part of the GFDL licensing update.

Povray src code

Hexahedron, made by me using POV-Ray, see en:User:Cyp/Poly.pov for source.}}

//Picture   ***  Use flashiness=1 !!! ***
//
//   +w1024 +h1024 +a0.3 +am2
//   +w512 +h512 +a0.3 +am2
//
//Movie   ***  Use flashiness=0.25 !!! ***
//
//   +kc +kff120 +w256 +h256 +a0.3 +am2
//   +kc +kff60 +w256 +h256 +a0.3 +am2
//"Fast" preview
//   +w128 +h128
#declare notwireframe=1;
#declare withreflection=0;
#declare flashiness=0.25; //Still pictures use 1, animated should probably be about 0.25.

#macro This_shape_will_be_drawn()
   //PLATONIC SOLIDS ***********
  //tetrahedron() #declare rotation=seed(1889/*1894*/);
  //hexahedron() #declare rotation=seed(7122);
  //octahedron() #declare rotation=seed(4193);
  //dodecahedron() #declare rotation=seed(4412);
  //icosahedron() #declare rotation=seed(7719);


  //weirdahedron() #declare rotation=seed(7412);


   //ARCHIMEDIAN SOLIDS ***********
  //cuboctahedron() #declare rotation=seed(1941);
  //icosidodecahedron() #declare rotation=seed(2241);

  //truncatedtetrahedron() #declare rotation=seed(8717);
  //truncatedhexahedron() #declare rotation=seed(1345);
  //truncatedoctahedron() #declare rotation=seed(7235);
  //truncateddodecahedron() #declare rotation=seed(9374);
  //truncatedicosahedron() #declare rotation=seed(1666);

  //rhombicuboctahedron() #declare rotation=seed(6124);
  //truncatedcuboctahedron() #declare rotation=seed(1156);
  //rhombicosidodecahedron() #declare rotation=seed(8266);
  //truncatedicosidodecahedron() #declare rotation=seed(1422);

  //snubhexahedron(-1) #declare rotation=seed(7152);
  //snubhexahedron(1) #declare rotation=seed(1477);
  //snubdodecahedron(-1) #declare rotation=seed(5111);
  //snubdodecahedron(1) #declare rotation=seed(8154);


   //CATALAN SOLIDS ***********
  //rhombicdodecahedron() #declare rotation=seed(7154);
  //rhombictriacontahedron() #declare rotation=seed(1237);

  //triakistetrahedron() #declare rotation=seed(7735);
  //triakisoctahedron() #declare rotation=seed(5354);
  //tetrakishexahedron() #declare rotation=seed(1788);
  //triakisicosahedron() #declare rotation=seed(1044);
  //pentakisdodecahedron() #declare rotation=seed(6100);

  //deltoidalicositetrahedron() #declare rotation=seed(5643);
  //disdyakisdodecahedron() #declare rotation=seed(1440);
  //deltoidalhexecontahedron() #declare rotation=seed(1026);
  //disdyakistriacontahedron() #declare rotation=seed(1556);

  //pentagonalicositetrahedron(-1) #declare rotation=seed(7771);
  //pentagonalicositetrahedron(1) #declare rotation=seed(3470);
  //pentagonalhexecontahedron(-1) #declare rotation=seed(1046);
  //pentagonalhexecontahedron(1) #declare rotation=seed(1096);

   //PRISMS, ANTIPRISMS, ETC... ***********
  //rprism(5) #declare rotation=seed(6620);
  antiprism(5) #declare rotation=seed(6620);
  //bipyramid(5) #declare rotation=seed(6620);
  //trapezohedron(17) #declare rotation=seed(6620);

#end


#declare tau=(1+sqrt(5))/2;
#declare sq2=sqrt(2);
#declare sq297=sqrt(297);
#declare xi=(pow(sq297+17,1/3)-pow(sq297-17,1/3)-1)/3;
#declare sqweird=sqrt(tau-5/27);
#declare ouch=pow((tau+sqweird)/2,1/3)+pow((tau-sqweird)/2,1/3);
#declare alfa=ouch-1/ouch;
#declare veta=(ouch+tau+1/ouch)*tau;

#macro tetrahedron()
  addpointsevensgn(<1,1,1>)
  autoface()
#end

#macro hexahedron()
  addpointssgn(<1,1,1>,<1,1,1>)
  autoface()
#end

#macro octahedron()
  addevenpermssgn(<1,0,0>,<1,0,0>)
  autoface()
#end

#macro dodecahedron()
  addpointssgn(<1,1,1>,<1,1,1>)
  addevenpermssgn(<0,1/tau,tau>,<0,1,1>)
  autoface()
#end

#macro icosahedron()
  addevenpermssgn(<0,1,tau>,<0,1,1>)
  autoface()
#end


#macro weirdahedron()
  addpermssgn(<1,2,3>,<1,1,1>)
  autoface()
#end


#macro cuboctahedron()
  addevenpermssgn(<0,1,1>,<0,1,1>)
  autoface()
#end

#macro icosidodecahedron()
  addevenpermssgn(<0,0,2*tau>,<0,0,1>)
  addevenpermssgn(<1,tau,1+tau>,<1,1,1>)
  autoface()
#end


#macro truncatedtetrahedron()
  addevenpermsevensgn(<1,1,3>)
  autoface()
#end

#macro truncatedhexahedron()
  addevenpermssgn(<sq2-1,1,1>,<1,1,1>)
  autoface()
#end

#macro truncatedoctahedron()
  addpermssgn(<0,1,2>,<0,1,1>)
  autoface()
#end

#macro truncateddodecahedron()
  addevenpermssgn(<0,1/tau,2+tau>,<0,1,1>)
  addevenpermssgn(<1/tau,tau,2*tau>,<1,1,1>)
  addevenpermssgn(<tau,2,1+tau>,<1,1,1>)
  autoface()
#end

#macro truncatedicosahedron()
  addevenpermssgn(<0,1,3*tau>,<0,1,1>)
  addevenpermssgn(<2,1+2*tau,tau>,<1,1,1>)
  addevenpermssgn(<1,2+tau,2*tau>,<1,1,1>)
  autoface()
#end


#macro rhombicuboctahedron()
  addevenpermssgn(<1+sq2,1,1>,<1,1,1>)
  autoface()
#end

#macro truncatedcuboctahedron()
  addpermssgn(<1,1+sq2,1+sq2*2>,<1,1,1>)
  autoface()
#end

#macro rhombicosidodecahedron()
  addevenpermssgn(<1,1,1+2*tau>,<1,1,1>)
  addevenpermssgn(<tau,2*tau,1+tau>,<1,1,1>)
  addevenpermssgn(<2+tau,0,1+tau>,<1,0,1>)
  autoface()
#end

#macro truncatedicosidodecahedron()
  addevenpermssgn(<1/tau,1/tau,3+tau>,<1,1,1>)
  addevenpermssgn(<2/tau,tau,1+2*tau>,<1,1,1>)
  addevenpermssgn(<1/tau,1+tau,3*tau-1>,<1,1,1>)
  addevenpermssgn(<2*tau-1,2,2+tau>,<1,1,1>)
  addevenpermssgn(<tau,3,2*tau>,<1,1,1>)
  autoface()
#end


#macro snubhexahedron(s)
  addpermsaltsgn(<1,1/xi,xi>*s)
  autoface()
#end

#macro snubdodecahedron(s)
  addevenpermsevensgn(<2*alfa,2,2*veta>*s)
  addevenpermsevensgn(<alfa+veta/tau+tau,-alfa*tau+veta+1/tau,alfa/tau+veta*tau-1>*s)
  addevenpermsevensgn(<-alfa/tau+veta*tau+1,-alfa+veta/tau-tau,alfa*tau+veta-1/tau>*s)
  addevenpermsevensgn(<-alfa/tau+veta*tau-1,alfa-veta/tau-tau,alfa*tau+veta+1/tau>*s)
  addevenpermsevensgn(<alfa+veta/tau-tau,alfa*tau-veta+1/tau,alfa/tau+veta*tau+1>*s)
  autoface()
#end

#macro rhombicdodecahedron()
  cuboctahedron() dual()
#end

#macro rhombictriacontahedron()
  icosidodecahedron() dual()
#end

#macro triakistetrahedron()
  truncatedtetrahedron() dual()
#end

#macro triakisoctahedron()
  truncatedhexahedron() dual()
#end

#macro tetrakishexahedron()
  truncatedoctahedron() dual()
#end

#macro triakisicosahedron()
  truncateddodecahedron() dual()
#end

#macro pentakisdodecahedron()
  truncatedicosahedron() dual()
#end

#macro deltoidalicositetrahedron()
  rhombicuboctahedron() dual()
#end

#macro disdyakisdodecahedron()
  truncatedcuboctahedron() dual()
#end

#macro deltoidalhexecontahedron()
  rhombicosidodecahedron() dual()
#end

#macro disdyakistriacontahedron()
  truncatedicosidodecahedron() dual()
#end

#macro pentagonalicositetrahedron(s)
  snubhexahedron(s) dual()
#end

#macro pentagonalhexecontahedron(s)
  snubdodecahedron(s) dual()
#end

#macro rprism(n)
  #local a=sqrt((1-cos(2*pi/n))/2);
  #local b=0; #while(b<n-.5)
    addpointssgn(<sin(2*pi*b/n),cos(2*pi*b/n),a>,<0,0,1>)
  #local b=b+1; #end
  autoface()
#end

#macro antiprism(n)
  #local a=sqrt((cos(pi/n)-cos(2*pi/n))/2);
  #local b=0; #while(b<2*n-.5)
    addpoint(<sin(pi*b/n),cos(pi*b/n),a>)
  #local a=-a; #local b=b+1; #end
  autoface()
#end

#macro bipyramid(n)
  rprism(n) dual()
#end

#macro trapezohedron(n)
  antiprism(n) dual()
#end


#declare points=array[1000];
#declare npoints=0;
#declare faces=array[1000];
#declare nfaces=0;
#macro addpoint(a)
  #declare points[npoints]=a;
  #declare npoints=npoints+1;
#end
#macro addevenperms(a)
  addpoint(a)
  addpoint(<a.y,a.z,a.x>)
  addpoint(<a.z,a.x,a.y>)
#end
#macro addperms(a)
  addevenperms(a)
  addevenperms(<a.x,a.z,a.y>)
#end
#macro addpointssgn(a,s)
  addpoint(a)
  #if(s.x) addpointssgn(a*<-1,1,1>,s*<0,1,1>) #end
  #if(s.y) addpointssgn(a*<1,-1,1>,s*<0,0,1>) #end
  #if(s.z) addpoint(a*<1,1,-1>) #end
#end
#macro addevenpermssgn(a,s)
  addpointssgn(a,s)
  addpointssgn(<a.y,a.z,a.x>,<s.y,s.z,s.x>)
  addpointssgn(<a.z,a.x,a.y>,<s.z,s.x,s.y>)
#end
#macro addpermssgn(a,s)
  addevenpermssgn(a,s)
  addevenpermssgn(<a.x,a.z,a.y>,<s.x,s.z,s.y>)
#end
#macro addpointsevensgn(a)
  addpoint(a)
  addpoint(a*<-1,-1,1>)
  addpoint(a*<-1,1,-1>)
  addpoint(a*<1,-1,-1>)
#end
#macro addevenpermsevensgn(a)
  addevenperms(a)
  addevenperms(a*<-1,-1,1>)
  addevenperms(a*<-1,1,-1>)
  addevenperms(a*<1,-1,-1>)
#end
#macro addpermsaltsgn(a)
  addevenpermsevensgn(a)
  addevenpermsevensgn(<a.x,a.z,-a.y>)
#end
/*#macro addevenpermssgn(a,s) //Calls addevenperms with, for each 1 in s, a.{x,y,z} replaced with {+,-}a.{x,y,z}
  addevenperms(a)
  #if(s.x) addevenpermssgn(a*<-1,1,1>,s*<0,1,1>) #end
  #if(s.y) addevenpermssgn(a*<1,-1,1>,s*<0,0,1>) #end
  #if(s.z) addevenperms(a*<1,1,-1>) #end
#end*/
#macro addface(d,l)
  #local a=vnormalize(d)/l; 
  #local f=1;
  #local n=0; #while(n<nfaces-.5)
    #if(vlength(faces[n]-a)<0.00001) #local f=0; #end
  #local n=n+1; #end
  #if(f)
    #declare faces[nfaces]=a;
    #declare nfaces=nfaces+1;
  #end
#end
#macro dual()
  #declare temp=faces;
  #declare faces=points;
  #declare points=temp; 
  #declare temp=nfaces;
  #declare nfaces=npoints;
  #declare npoints=temp; 
#end

#macro autoface() //WARNING: ONLY WORKS IF ALL EDGES HAVE EQUAL LENGTH
  //Find edge length 
  #declare elength=1000;
  #local a=0; #while(a<npoints-.5) #local b=0; #while(b<npoints-.5)
    #local c=vlength(points[a]-points[b]); #if(c>0.00001 & c<elength) #local elength=c; #end
  #local b=b+1; #end #local a=a+1; #end

  //Find planes
  //#macro planes()
  #local a=0; #while(a<npoints-.5)
    #local b=a+1; #while(b<npoints-.5)
      #if(vlength(points[a]-points[b])<elength+0.00001) #local c=b+1; #while(c<npoints-.5)
        #if(vlength(points[a]-points[c])<elength+0.00001)
          #local n=vnormalize(vcross(points[b]-points[a],points[c]-points[a]));
          #local d=vdot(n,points[a]);
          #if(d<0) #local n=-n; #local d=-d; #end
          #local f=1;
          #local e=0; #while(e<npoints-.5)
            #if(vdot(n, points[e])>d+0.00001) #local f=0; #end
          #local e=e+1; #end
          #if(f)
            #declare ld=d;
            addface(n,d) //plane { n, d }
          #end
        #end
      #local c=c+1; #end #end
    #local b=b+1; #end
  #local a=a+1; #end
#end

This_shape_will_be_drawn()

//Random rotations are (hopefully) equally distributed...
#declare rot1=rand(rotation)*pi*2;
#declare rot2=acos(1-2*rand(rotation));
#declare rot3=(rand(rotation)+clock)*pi*2;
#macro dorot()
  rotate rot1*180/pi*y
  rotate rot2*180/pi*x
  rotate rot3*180/pi*y
#end

//Scale shape to fit in unit sphere
#local b=0;
#local a=0; #while(a<npoints-.5)
  #local c=vlength(points[a]); #if(c>b) #local b=c; #end
#local a=a+1; #end
#local a=0; #while(a<npoints-.5)
  #local points[a]=points[a]/b;
#local a=a+1; #end
#local a=0; #while(a<nfaces-.5)
  #local faces[a]=faces[a]*b;
#local a=a+1; #end

//Draw edges
#macro addp(a)
  #declare p[np]=a;
  #declare np=np+1;
#end
#local a=0; #while(a<nfaces-.5)
  #declare p=array[20];
  #declare np=0;
  #local b=0; #while(b<npoints-.5)
    #if(vdot(faces[a],points[b])>1-0.00001) addp(b) #end
  #local b=b+1; #end
  #local c=0; #while(c<np-.5)
    #local d=0; #while(d<np-.5) #if(p[c]<p[d]-.5)
      #local f=1;
      #local e=0; #while(e<np-.5) #if(e!=c & e!=d & vdot(vcross(points[p[c]],points[p[d]]),points[p[e]])<0)
        #local f=0;
      #end #local e=e+1; #end
      #if(f)
        object {
          cylinder { points[p[c]], points[p[d]], .01 dorot() }
          pigment { colour <.3,.3,.3> }
          finish { ambient 0 diffuse 1 phong 1 }
        }
      #end #end        
    #local d=d+1; #end
  #local c=c+1; #end
#local a=a+1; #end
/*#local a=0; #while(a<npoints-.5)
  #local b=a+1; #while(b<npoints-.5)
    #if(vlength(points[a]-points[b])<elength+0.00001)
      object {
        cylinder { points[a], points[b], .01 dorot() }
        pigment { colour <.3,.3,.3> }
        finish { ambient 0 diffuse 1 phong 1 }
      }
    #end
  #local b=b+1; #end
#local a=a+1; #end*/

//Draw points
#local a=0; #while(a<npoints-.5)
  object {
    sphere { points[a], .01 dorot() }
    pigment { colour <.3,.3,.3> }
    finish { ambient 0 diffuse 1 phong 1 }
  }
#local a=a+1; #end

#if(notwireframe)
//Draw planes
object {
  intersection {
    #local a=0; #while(a<nfaces-.5)
      plane { faces[a], 1/vlength(faces[a]) }
    #local a=a+1; #end
    //planes()
    //sphere { <0,0,0>, 1 }
    //sphere { <0,0,0>, ld+.01 inverse }
    dorot()
  }
  pigment { colour rgbt <.8,.8,.8,.4> }
  finish { ambient 0 diffuse 1 phong flashiness #if(withreflection) reflection { .2 } #end }
  //interior { ior 1.5 }
  photons {
    target on
    refraction on
    reflection on
    collect on
  }
}
#end

//  CCC Y Y PP
//  C   Y Y P P
//  C    Y  PP
//  C    Y  P
//  CCC  Y  P

#local a=0;
#while(a<11.0001)
  light_source { <4*sin(a*pi*2/11), 5*cos(a*pi*6/11), -4*cos(a*pi*2/11)> colour (1+<sin(a*pi*2/11),sin(a*pi*2/11+pi*2/3),sin(a*pi*2/11+pi*4/3)>)*2/11 }
  #local a=a+1;
#end

background { color <1,1,1> }

camera {
  perspective
  location <0,0,0>
  direction <0,0,1>
  right x/2
  up y/2
  sky <0,1,0>
  location <0,0,-4.8>
  look_at <0,0,0>
}

global_settings {
  max_trace_level 40
  photons {
    count 200000
    autostop 0
  }
}
File:Hexahedron.svg fitxategi honen bektore bertsioa da. Hau rasterizatutako irudiaren ordez erabili beharko litzateke.

File:Hexahedron.jpg → File:Hexahedron.svg

Grafiko bektorialei buruzko informazioa lortzeko, irakurri SVGra trantsizioa Commonsen.
MediaWikiko SVG irudien inguruko laguntza teknikoa ere badago.

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Data/orduan klik egin fitxategiak orduan zuen itxura ikusteko.

Data/OrduaIruditxoaNeurriakErabiltzaileaIruzkina
oraingoa21:28, 6 urtarrila 200521:28, 6 urtarrila 2005 bertsioaren iruditxoa742 × 826 (51 KB)wikimediacommons>Kjell AndréA Hexahedron (cube). A regular polyhedron.

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