joyent-portal/spikes/architecture/sigmajs/vendor/plugins/sigma.pathfinding.astar.min.js

(function(){"use strict";if("undefined"==typeof sigma)throw"sigma is not declared";var a=function(a,b,c){var d=void 0!=a&&void 0!=b&&void 0!=a.x&&void 0!=a.y&&void 0!=b.x&&void 0!=b.y;if(d)return(c||0)+Math.sqrt(Math.pow(b.y-a.y,2)+Math.pow(b.x-a.x,2))};sigma.classes.graph.addMethod("astar",function(b,c,d){var e=new sigma.classes.configurable({undirected:!1,pathLengthFunction:a,heuristicLengthFunction:void 0},d||{}),f=e("pathLengthFunction"),g=e("heuristicLengthFunction")||f,h=this.nodes(b),i=this.nodes(c),j={},k=[],l=function(a,b,c,d){var e=a.id,f={pathLength:c,heuristicLength:d,node:a,nodeId:e,previousNode:b};if(void 0==j[e]||j[e].pathLenth>c){j[e]=f;var g,h;for(h=0;h<k.length&&(g=k[h],!(g.heuristicLength>d));h++);k.splice(h,0,f)}};l(h,null,0,0);var m,n=!1;m=e("undirected")?this.allNeighborsIndex:this.outNeighborsIndex;for(var o,p,q,r,s,t;k.length>0;){if(o=k.shift(),o.nodeId==c){n=!0;break}for(p=Object.keys(m[o.nodeId]),t=0;t<p.length;t++)q=this.nodes(p[t]),r=f(o.node,q,o.pathLength),s=g(q,i),l(q,o.node,r,s)}if(n){for(var u=[],v=i;v;)u.unshift(v),v=j[v.id].previousNode;return u}})}).call(window);