tapestry-framework/src/js/dojo-0.4.3/src/math/points.js

dojo.provide("dojo.math.points");
dojo.require("dojo.math");
dojo.math.points={translate:function(a,b){
if(a.length!=b.length){
dojo.raise("dojo.math.translate: points not same size (a:["+a+"], b:["+b+"])");
}
var c=new Array(a.length);
for(var i=0;i<a.length;i++){
c[i]=a[i]+b[i];
}
return c;
},midpoint:function(a,b){
if(a.length!=b.length){
dojo.raise("dojo.math.midpoint: points not same size (a:["+a+"], b:["+b+"])");
}
var c=new Array(a.length);
for(var i=0;i<a.length;i++){
c[i]=(a[i]+b[i])/2;
}
return c;
},invert:function(a){
var b=new Array(a.length);
for(var i=0;i<a.length;i++){
b[i]=-a[i];
}
return b;
},distance:function(a,b){
return Math.sqrt(Math.pow(b[0]-a[0],2)+Math.pow(b[1]-a[1],2));
}};