//>>built
define("dojox/gfx3d/vector",["dojo/_base/lang","dojo/_base/array","./_base"],function(_1,_2,_3){_3.vector={sum:function(){var v={x:0,y:0,z:0};_2.forEach(arguments,function(_4){v.x+=_4.x;v.y+=_4.y;v.z+=_4.z;});return v;},center:function(){var l=arguments.length;if(l==0){return {x:0,y:0,z:0};}var v=_3.vector.sum(arguments);return {x:v.x/l,y:v.y/l,z:v.z/l};},substract:function(a,b){return {x:a.x-b.x,y:a.y-b.y,z:a.z-b.z};},_crossProduct:function(x,y,z,u,v,w){return {x:y*w-z*v,y:z*u-x*w,z:x*v-y*u};},crossProduct:function(a,b,c,d,e,f){if(arguments.length==6&&_2.every(arguments,function(_5){return typeof _5=="number";})){return _3.vector._crossProduct(a,b,c,d,e,f);}return _3.vector._crossProduct(a.x,a.y,a.z,b.x,b.y,b.z);},_dotProduct:function(x,y,z,u,v,w){return x*u+y*v+z*w;},dotProduct:function(a,b,c,d,e,f){if(arguments.length==6&&_2.every(arguments,function(_6){return typeof _6=="number";})){return _3.vector._dotProduct(a,b,c,d,e,f);}return _3.vector._dotProduct(a.x,a.y,a.z,b.x,b.y,b.z);},normalize:function(a,b,c){var l,m,n;if(a instanceof Array){l=a[0];m=a[1];n=a[2];}else{l=a;m=b;n=c;}var u=_3.vector.substract(m,l);var v=_3.vector.substract(n,l);return _3.vector.crossProduct(u,v);}};return _3.vector;});