quadtree.min.js

!function(e,t){"function"==typeof define&&define.amd?define([],t):"object"==typeof exports&&module.exports?module.exports=t():e.Quadtree=t()}(this,function(){return function(){function e(t){var n,i;if(this.x=t.x,this.y=t.y,this.width=t.width,this.height=t.height,this.maxElements=t.maxElements,null==this.width||null==this.height)throw new Error("Missing quadtree dimensions.");if(null==this.x&&(this.x=0),null==this.y&&(this.y=0),null==this.maxElements&&(this.maxElements=1),this.contents=[],this.oversized=[],this.size=0,this.width<1||this.height<1)throw new Error("Dimensions must be positive integers.");if(!Number.isInteger(this.x)||!Number.isInteger(this.y))throw new Error("Coordinates must be integers");if(this.maxElements<1)throw new Error("The maximum number of elements before a split must be a positive integer.");i=this,this.children={NW:{create:function(){return new e({x:i.x,y:i.y,width:Math.max(Math.floor(i.width/2),1),height:Math.max(Math.floor(i.height/2),1),maxElements:i.maxElements})},tree:null},NE:{create:function(){return new e({x:i.x+Math.max(Math.floor(i.width/2),1),y:i.y,width:Math.ceil(i.width/2),height:Math.max(Math.floor(i.height/2),1),maxElements:i.maxElements})},tree:null},SW:{create:function(){return new e({x:i.x,y:i.y+Math.max(Math.floor(i.height/2),1),width:Math.max(Math.floor(i.width/2),1),height:Math.ceil(i.height/2),maxElements:i.maxElements})},tree:null},SE:{create:function(){return new e({x:i.x+Math.max(Math.floor(i.width/2),1),y:i.y+Math.max(Math.floor(i.height/2),1),width:Math.ceil(i.width/2),height:Math.ceil(i.height/2),maxElements:i.maxElements})},tree:null}};for(n in this.children)this.children[n].get=function(){return null!=this.tree?this.tree:(this.tree=this.create(),this.tree)}}var t,n,i,r,h,l,o,s;return r=function(e){var t,n;return{x:Math.floor((null!=(t=e.width)?t:1)/2)+e.x,y:Math.floor((null!=(n=e.height)?n:1)/2)+e.y}},t=function(e,t){var n,i,r,h;return!(e.x>=t.x+(null!=(n=t.width)?n:1)||e.x+(null!=(i=e.width)?i:1)<=t.x||e.y>=t.y+(null!=(r=t.height)?r:1)||e.y+(null!=(h=e.height)?h:1)<=t.y)},n=function(e,t){var n;return n=r(t),e.x<n.x?e.y<n.y?"NW":"SW":e.y<n.y?"NE":"SE"},s=function(e){if("object"!=typeof e)throw new Error("Element must be an Object.");if(null==e.x||null==e.y)throw new Error("Coordinates properties are missing.");if((null!=e?e.width:void 0)<0||(null!=e?e.height:void 0)<0)throw new Error("Width and height must be positive integers.")},l=function(e){var t,n,i,r;return n=Math.max(Math.floor(e.width/2),1),i=Math.ceil(e.width/2),r=Math.max(Math.floor(e.height/2),1),t=Math.ceil(e.height/2),{NW:{x:e.x,y:e.y,width:n,height:r},NE:{x:e.x+n,y:e.y,width:i,height:r},SW:{x:e.x,y:e.y+r,width:n,height:t},SE:{x:e.x+n,y:e.y+r,width:i,height:t}}},i=function(e,n){var i,r,h,o;o=[],h=l(n);for(r in h)i=h[r],t(e,i)&&o.push(r);return o},h=function(e,t){var n;return(n=function(n){return e["_"+n]=e[n],Object.defineProperty(e,n,{set:function(e){return t.remove(this,!0),this["_"+n]=e,t.push(this)},get:function(){return this["_"+n]},configurable:!0})})("x"),n("y"),n("width"),n("height")},o=function(e){var t;return(t=function(t){if(null!=e["_"+t])return delete e[t],e[t]=e["_"+t],delete e["_"+t]})("x"),t("y"),t("width"),t("height")},e.prototype.clear=function(){var e,t;this.contents=[],this.oversized=[],this.size=0,t=[];for(e in this.children)t.push(this.children[e].tree=null);return t},e.prototype.push=function(e,t){return this.pushAll([e],t)},e.prototype.pushAll=function(e,t){var n,r,l,o,u,f,c,d,a,g,p,m,x,y,v,w,E,z,M,b;for(p=0,y=e.length;p<y;p++)g=e[p],s(g),t&&h(g,this);for(c=[{tree:this,elements:e}];c.length>0;){for(b=(E=c.shift()).tree,d={NW:null,NE:null,SW:null,SE:null},m=0,v=(f=E.elements).length;m<v;m++)if(u=f[m],b.size++,1!==(a=i(u,b)).length||1===b.width||1===b.height)b.oversized.push(u);else if(b.size-b.oversized.length<=b.maxElements)b.contents.push(u);else{for(o=a[0],M=b.children[o],null==d[o]&&(d[o]={tree:M.get(),elements:[]}),d[o].elements.push(u),x=0,w=(z=b.contents).length;x<w;x++)r=z[x],null==d[l=i(r,b)[0]]&&(d[l]={tree:b.children[l].get(),elements:[]}),d[l].elements.push(r);b.contents=[]}for(o in d)null!=(n=d[o])&&c.push(n)}return this},e.prototype.remove=function(e,t){var i,r;return s(e),(i=this.oversized.indexOf(e))>-1?(this.oversized.splice(i,1),this.size--,t||o(e),!0):(i=this.contents.indexOf(e))>-1?(this.contents.splice(i,1),this.size--,t||o(e),!0):!(null==(r=this.children[n(e,this)]).tree||!r.tree.remove(e,t)||(this.size--,0===r.tree.size&&(r.tree=null),0))},e.prototype.colliding=function(e,n){var r,h,l,o,u,f,c,d,a,g,p,m,x,y;for(null==n&&(n=t),s(e),u=[],l=[this];l.length>0;){for(f=0,a=(m=(y=l.shift()).oversized).length;f<a;f++)(h=m[f])!==e&&n(e,h)&&u.push(h);for(c=0,g=(x=y.contents).length;c<g;c++)(h=x[c])!==e&&n(e,h)&&u.push(h);for(0===(o=i(e,y)).length&&(o=[],e.x>=y.x+y.width&&o.push("NE"),e.y>=y.y+y.height&&o.push("SW"),o.length>0&&(1===o.length?o.push("SE"):o=["SE"])),d=0,p=o.length;d<p;d++)r=o[d],null!=y.children[r].tree&&l.push(y.children[r].tree)}return u},e.prototype.onCollision=function(e,n,r){var h,l,o,u,f,c,d,a,g,p,m,x,y;for(null==r&&(r=t),s(e),o=[this];o.length>0;){for(f=0,a=(m=(y=o.shift()).oversized).length;f<a;f++)(l=m[f])!==e&&r(e,l)&&n(l);for(c=0,g=(x=y.contents).length;c<g;c++)(l=x[c])!==e&&r(e,l)&&n(l);for(0===(u=i(e,y)).length&&(u=[],e.x>=y.x+y.width&&u.push("NE"),e.y>=y.y+y.height&&u.push("SW"),u.length>0&&(1===u.length?u.push("SE"):u=["SE"])),d=0,p=u.length;d<p;d++)h=u[d],null!=y.children[h].tree&&o.push(y.children[h].tree)}return null},e.prototype.get=function(e){return this.where(e)},e.prototype.where=function(e){var t,i,r,h,l,o,u,f,c,d,a,g,p;if("object"==typeof e&&(null==e.x||null==e.y))return this.find(function(t){var n,i;n=!0;for(i in e)e[i]!==t[i]&&(n=!1);return n});for(s(e),h=[],r=[this];r.length>0;){for(l=0,f=(d=(p=r.shift()).oversized).length;l<f;l++){i=d[l],t=!0;for(u in e)e[u]!==i[u]&&(t=!1);t&&h.push(i)}for(o=0,c=(a=p.contents).length;o<c;o++){i=a[o],t=!0;for(u in e)e[u]!==i[u]&&(t=!1);t&&h.push(i)}null!=(g=p.children[n(e,p)]).tree&&r.push(g.tree)}return h},e.prototype.each=function(e){var t,n,i,r,h,l,o,s,u,f;for(n=[this];n.length>0;){for(r=0,l=(s=(f=n.shift()).oversized).length;r<l;r++)i=s[r],"function"==typeof e&&e(i);for(h=0,o=(u=f.contents).length;h<o;h++)i=u[h],"function"==typeof e&&e(i);for(t in f.children)null!=f.children[t].tree&&n.push(f.children[t].tree)}return this},e.prototype.find=function(e){var t,n,i,r,h,l,o,s,u,f,c;for(n=[this],r=[];n.length>0;){for(h=0,o=(u=(c=n.shift()).oversized).length;h<o;h++)i=u[h],("function"==typeof e?e(i):void 0)&&r.push(i);for(l=0,s=(f=c.contents).length;l<s;l++)i=f[l],("function"==typeof e?e(i):void 0)&&r.push(i);for(t in c.children)null!=c.children[t].tree&&n.push(c.children[t].tree)}return r},e.prototype.filter=function(t){var n;return(n=function(i){var r,h,l,o,s,u,f,c,d,a,g;(h=new e({x:i.x,y:i.y,width:i.width,height:i.height,maxElements:i.maxElements})).size=0;for(r in i.children)null!=i.children[r].tree&&(h.children[r].tree=n(i.children[r].tree),h.size+=null!=(c=null!=(d=h.children[r].tree)?d.size:void 0)?c:0);for(o=0,u=(a=i.oversized).length;o<u;o++)l=a[o],(null==t||("function"==typeof t?t(l):void 0))&&h.oversized.push(l);for(s=0,f=(g=i.contents).length;s<f;s++)l=g[s],(null==t||("function"==typeof t?t(l):void 0))&&h.contents.push(l);return h.size+=h.oversized.length+h.contents.length,0===h.size?null:h})(this)},e.prototype.reject=function(e){return this.filter(function(t){return!("function"==typeof e?e(t):void 0)})},e.prototype.visit=function(e){var t,n,i;for(n=[this];n.length>0;){i=n.shift(),e.bind(i)();for(t in i.children)null!=i.children[t].tree&&n.push(i.children[t].tree)}return this},e.prototype.pretty=function(){var e,t,n,i,r,h,l;for(h="",n=function(e){var t,n,i;for(i="",t=n=e;n<=0?t<0:t>0;n<=0?++t:--t)i+="   ";return i},t=[{label:"ROOT",tree:this,level:0}];t.length>0;){h+=(i=n((l=t.shift()).level))+"| "+l.label+"\n"+i+"| ------------\n",l.tree.oversized.length>0&&(h+=i+"| * Oversized elements *\n"+i+"|   "+l.tree.oversized+"\n"),l.tree.contents.length>0&&(h+=i+"| * Leaf content *\n"+i+"|   "+l.tree.contents+"\n"),r=!1;for(e in l.tree.children)null!=l.tree.children[e].tree&&(r=!0,t.unshift({label:e,tree:l.tree.children[e].tree,level:l.level+1}));r&&(h+=i+"└──┐\n")}return h},e}()});
//# sourceMappingURL=quadtree.min.js.map