@doegis/core/views/2d/tiling/TileQueue.js

DOE GIS API

import{_ as e}from"../../../chunks/tslib.es6.js";import t from"../../../core/Accessor.js";import{destroyMaybe as s}from"../../../core/maybe.js";import{property as r}from"../../../core/accessorSupport/decorators/property.js";import"../../../core/accessorSupport/ensureType.js";import"../../../core/arrayUtils.js";import{subclass as o}from"../../../core/accessorSupport/decorators/subclass.js";import{d as i}from"../../../chunks/vec2.js";import{QueueProcessor as n}from"../../support/QueueProcessor.js";function u(e,t){return e.length=0,t.forEach((t=>e.push(t))),e}const c=new Set,a=[],h=new Map,l=[0,0];let p=class extends t{constructor(e){super(e),this._keyToItem=new Map,this.concurrency=6,this.strategy="scale-first",this.tileInfoView=null}initialize(){const{concurrency:e,process:t,strategy:s}=this;this._queue=new n({concurrency:e,process:(e,s)=>{const r=this._keyToItem.get(e);return t(r,{signal:s})},peeker:"scale-first"===s?e=>this._peekByScaleFirst(e):e=>this._peekByCenterFirst(e)})}destroy(){this.clear(),this._queue=s(this._queue)}get length(){return this._queue?this._queue.length:0}get onGoingCount(){return this._keyToItem.size}get updating(){return this.length>0||this.onGoingCount>0}abort(e){const t="string"==typeof e?e:e.id;this._queue.abort(t)}clear(){this._queue.clear(),this._keyToItem.clear(),this.notifyChange("updating")}has(e){return"string"==typeof e?this._keyToItem.has(e):this._keyToItem.has(e.id)}isOngoing(e){const t="string"==typeof e?e:e.id;return this.has(t)&&this._queue.isOngoing(t)}pause(){this._queue.pause()}push(e){const t=e.key.id;if(this._queue.has(t))return this._queue.get(t);const s=this._queue.push(t),r=()=>{this._keyToItem.delete(t),this.notifyChange("updating")};return this._keyToItem.set(t,e),s.then(r,r),this.notifyChange("updating"),s}reset(){this._queue.reset()}resume(){this._queue.resume()}_peekByScaleFirst(e){if(!this.state)return e.values().next().value;const t=this.tileInfoView;let s=Number.NEGATIVE_INFINITY,r=Number.POSITIVE_INFINITY;e.forEach((e=>{const t=this._keyToItem.get(e),o=this.tileInfoView.getTileScale(t.key);h.has(o)||(h.set(o,[]),s=Math.max(o,s),r=Math.min(o,r)),h.get(o).push(t.key),c.add(o)}));let o=this.state.scale;h.has(o)||(u(a,c),a.sort(((e,t)=>e-t)),o=a.reduce(((e,t)=>Math.abs(t-o)<Math.abs(e-o)?t:e),a[0])),o=Math.min(o,s),o=Math.max(o,r);const i=h.get(o),n=t.getClosestInfoForScale(o),l=n.getColumnForX(this.state.center[0]),p=n.getRowForY(this.state.center[1]);return i.sort(((e,t)=>{const s=n.denormalizeCol(e.col,e.world),r=n.denormalizeCol(t.col,t.world);return Math.sqrt((l-s)*(l-s)+(p-e.row)*(p-e.row))-Math.sqrt((l-r)*(l-r)+(p-t.row)*(p-t.row))})),c.clear(),h.clear(),i[0].id}_peekByCenterFirst(e){if(!this.state)return e.values().next().value;const t=this.tileInfoView,s=this.state.center;let r,o=Number.POSITIVE_INFINITY;return e.forEach((e=>{const n=this._keyToItem.get(e);t.getTileCoords(l,n.key);const u=i(l,s);u<o&&(o=u,r=n.key)})),r.id}};e([r({constructOnly:!0})],p.prototype,"concurrency",void 0),e([r({constructOnly:!0})],p.prototype,"process",void 0),e([r()],p.prototype,"state",void 0),e([r({constructOnly:!0})],p.prototype,"strategy",void 0),e([r({constructOnly:!0})],p.prototype,"tileInfoView",void 0),e([r({readOnly:!0})],p.prototype,"updating",null),p=e([o("esri.views.2d.tiling.TileQueue")],p);const y=p;export{y as default};