#VRML V2.0 utf8

NavigationInfo{ type "EXAMINE" }
Viewpoint{ fieldOfView .2 position 0 0 40 description "[100]"}
Viewpoint{ fieldOfView .2 position 28 0 28 orientation 0 1 0 .785
 description "[110]"}
Viewpoint{ fieldOfView .2 position 23 23 23 orientation -1 1 0 .955
 description "[111]"}
DEF XForm Transform{ children[
 Shape{ appearance Appearance{
   material Material{ emissiveColor 0 0 1 transparency .25}}
  geometry IndexedFaceSet{ solid FALSE coord Coordinate{
   point[2.5 -1.5 2.5,-2.5 -1.5 2.5,-2.5 -1.5 -2.5,2.5 -1.5 -2.5]}
   coordIndex[0 1 2 3]}}
 Shape{ appearance Appearance{
   material Material{ emissiveColor 1 0 0 transparency .25}}
  geometry IndexedFaceSet{ solid FALSE coord Coordinate{
   point[-2 2.5 2.5,-2 2.5 -2.5,2.5 -2 -2.5,2.5 -2 2.5]} coordIndex[0 1 2 3]}}
 Shape{ appearance Appearance{
   material Material{ emissiveColor 0 1 0 transparency .25}}
  geometry IndexedFaceSet{ solid FALSE coord Coordinate{
   point[2 2 1,2 -1 -2,-1 2 -2]} coordIndex[0 1 2]}}
]}
Script{
  field SFNode XForm USE XForm
  directOutput TRUE
url ["javascript:
function initialize() { 
  var i,j,k, n=2, is=1,js,ks, Str = '';
  for ( i= -n; i<= n; i++) {
    js = is; sj='';
    for ( j= -n; j<= n; j++) {
      ks = js;  sk = '';
      for ( k= -n; k<= n; k++) {
        if (ks < 0) sk += 'Na{ trans '+i+' '+j+' '+k+'}';
        else sk += 'Cl{ trans '+i+' '+j+' '+k+'}';
        ks = -ks;}
      sj += sk; js = -js;}
    Str += sj; is = -is;}
  XForm.addChildren = Browser.createVrmlFromString(
'PROTO Grid[]{'+
'Shape{ appearance Appearance{ material Material{ emissiveColor 1 1 1}}'+
'geometry IndexedLineSet{ coord Coordinate{'+
'point[.5 0 0, -.5 0 0, 0 .5 0, 0 -.5 0, 0 0 .5, 0 0 -.5]}'+
'coordIndex[0 1 -1 2 3 -1 4 5]}}}'+
'PROTO Na[ field SFVec3f trans 0 0 0]{'+
'Transform{ translation IS trans children[ Grid{}'+
'Shape{ appearance Appearance{ material Material{ diffuseColor .9 .9 1 } }'+
'geometry Sphere{ radius 0.15 }}]}}'+
'PROTO Cl[ field SFVec3f trans 0 0 0]{'+
'Transform{ translation IS trans children[ Grid{}'+
'Shape{ appearance Appearance{ material Material{ diffuseColor 1 1 0 } }'+
'geometry Sphere{ radius 0.2 }}]}}' + Str );
}"]
}