Andrej Cimperšek - diploma

/*

        Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.

        Available via Academic Free License >= 2.1 OR the modified BSD license.

        see: http://dojotoolkit.org/license for details

*/

if(!dojo._hasResource["dojox.gfx3d.vector"]){

dojo._hasResource["dojox.gfx3d.vector"]=true;

dojo.provide("dojox.gfx3d.vector");

dojo.mixin(dojox.gfx3d.vector,{sum:function(){

var v={x:0,y:0,z:0};

dojo.forEach(arguments,function(_1){

v.x+=_1.x;

v.y+=_1.y;

v.z+=_1.z;

});

return v;

},center:function(){

var l=arguments.length;

if(l==0){

return {x:0,y:0,z:0};

}

var v=dojox.gfx3d.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&&dojo.every(arguments,function(_2){

return typeof _2=="number";

})){

return dojox.gfx3d.vector._crossProduct(a,b,c,d,e,f);

}

return dojox.gfx3d.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&&dojo.every(arguments,function(_3){

return typeof _3=="number";

})){

return dojox.gfx3d.vector._dotProduct(a,b,c,d,e,f);

}

return dojox.gfx3d.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=dojox.gfx3d.vector.substract(m,l);

var v=dojox.gfx3d.vector.substract(n,l);

return dojox.gfx3d.vector.crossProduct(u,v);

}});

}