@arcgis/core/views/interactive/snapping/GridSnappingEngine.js

ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API

/*
All material copyright ESRI, All Rights Reserved, unless otherwise specified.
See https://js.arcgis.com/4.32/esri/copyright.txt for details.
*/
import{_ as e}from"../../../chunks/tslib.es6.js";import t from"../../../core/Accessor.js";import r from"../../../core/Logger.js";import{deg2rad as i}from"../../../core/mathUtils.js";import{convertUnit as n}from"../../../core/unitUtils.js";import{property as o}from"../../../core/accessorSupport/decorators/property.js";import"../../../core/has.js";import"../../../core/RandomLCG.js";import{subclass as s}from"../../../core/accessorSupport/decorators/subclass.js";import{L as a}from"../../../chunks/vec32.js";import{isLoadedOrLoadFor as p,project as l}from"../../../geometry/projection.js";import{getClosestDenormalizedXToReference as c}from"../../../geometry/support/normalizeUtils.js";import{getResolutionForScale as u}from"../../../geometry/support/scaleUtils.js";import{minimumPixelsPerStrideForDisplayWhenScalingOff as d}from"../../2d/grid/constants.js";import{getScaleFactor as g,measureMetersPerUnitAtReferencePoint as f}from"../../2d/grid/gridUtils.js";import{create as h,createWritable as m}from"../sketch/normalizedPoint.js";import{gridPlacementGraphicSymbol as S}from"./snappingUtils.js";import{IntersectionSnappingCandidate as y}from"./candidates/IntersectionSnappingCandidate.js";import{LineSnappingCandidate as v}from"./candidates/LineSnappingCandidate.js";let w=class extends t{constructor(e){super(e),this.options=null}destroy(){this._set("options",null)}get grid(){return this.view.grid}get effectiveViewRotation(){return this.grid?.rotateWithMap?0:i(this.view.rotation??0)}get gridRotation(){return i(this.grid?.rotation??0)}get gridCenter(){const{spatialReference:e,grid:t}=this;if(!t||!e||!p(t.center.spatialReference,e))return null;try{const r=l(t.center,e),i=e.isWrappable&&null!=this.view?.center?c(r.x,this.view.center.x,e):r.x;return h(i,r.y,r.z)}catch(i){return r.getLogger(this).errorOnce("Grid Snapping - Failed to project grid center.",i),null}}get offsetScaleFactor(){const{pixelsPerStride:e,grid:t}=this;if(!t||!e)return 1;const{majorLineInterval:r,dynamicScaling:i}=t;return r<1?null:g(r,e,i)}get spatialReference(){return this.view.spatialReference}get gridMetersPerStride(){const{grid:e}=this;return e?n(e.spacing,e.units,"meters"):null}get viewMetersPerPixel(){const{viewMetersPerSRUnit:e}=this;return null==e?null:e*u(this.view.scale,this.view.spatialReference)}get viewMetersPerSRUnit(){const{spatialReference:e}=this.view;return this.gridCenter?f(this.gridCenter[0],this.gridCenter[1],e):null}get pixelsPerStride(){const{gridMetersPerStride:e,viewMetersPerPixel:t}=this;return t&&e?e/t:null}get updating(){return null!=this.grid&&null!=this.spatialReference&&null==this.viewMetersPerSRUnit}async fetchCandidates(e,t,r){const{options:i,view:n}=this;if(!i?.effectiveGridEnabled||!n.grid||r.feature?.attributes&&S in r.feature.attributes)return[];const o=r.coordinateHelper.arrayToPoint(e),s=i.distance*("touch"===r.pointer?i.touchSensitivityMultiplier:1);return this.fetchCandidatesSync(o,s)}fetchCandidatesSync(e,t){const r=[],{grid:i,effectiveViewRotation:n,gridRotation:o,gridCenter:s,viewMetersPerPixel:a,viewMetersPerSRUnit:c,offsetScaleFactor:u,spatialReference:g,gridMetersPerStride:f,pixelsPerStride:m}=this;if(!(i&&a&&c&&s&&g&&u&&f&&m))return r;if(!i.dynamicScaling&&m<d)return r;if(!p(e.spatialReference,g))return r;const S=l(e,g),w=h(S.x,S.y,S.z),x=P(w,-o,s,-n),C=f/c*u,U=j(x,C,s),{shouldSnapX:b,shouldSnapY:L}=R(U,x,t,a,c);if(!b&&!L)return[];const z=h((b?U:x)[0],(L?U:x)[1]),E=P(z,o,s,n),F=P(U,o,s,n);if(L){const e=M(U,x,C,"y"),t=P(e,o,s,n);r.push(new v({lineStart:F,lineEnd:t,targetPoint:E,isDraped:!1}))}if(b){const e=M(U,x,C,"x"),t=P(e,o,s,n);r.push(new v({lineStart:F,lineEnd:t,targetPoint:E,isDraped:!1}))}return b&&L&&r.push(new y(E,r[0],r[1],!1)),r}};e([o({constructOnly:!0})],w.prototype,"view",void 0),e([o()],w.prototype,"options",void 0),e([o()],w.prototype,"grid",null),e([o()],w.prototype,"effectiveViewRotation",null),e([o()],w.prototype,"gridRotation",null),e([o()],w.prototype,"gridCenter",null),e([o()],w.prototype,"offsetScaleFactor",null),e([o()],w.prototype,"spatialReference",null),e([o()],w.prototype,"gridMetersPerStride",null),e([o()],w.prototype,"viewMetersPerPixel",null),e([o()],w.prototype,"viewMetersPerSRUnit",null),e([o()],w.prototype,"pixelsPerStride",null),e([o()],w.prototype,"updating",null),w=e([s("esri.views.interactive.snapping.GridSnappingEngine")],w);const P=(e,t,r,i)=>{const n=m(e[0],e[1],e[2]);return a(n,a(n,n,r,t),r,i)},j=(e,t,r)=>{const i=(e[0]-r[0])/t,n=(e[1]-r[1])/t,o=Math.trunc(i),s=Math.trunc(n),a=Math.round(i%1),p=Math.round(n%1),l=r[0]+(o+a)*t,c=r[1]+(s+p)*t;return h(l,c)},R=(e,t,r,i,n)=>{if(i<=0)return{shouldSnapX:!1,shouldSnapY:!1};const o=(e[0]-t[0])/i,s=(e[1]-t[1])/i;return{shouldSnapX:Math.abs(o*n)<r,shouldSnapY:Math.abs(s*n)<r}},M=(e,t,r,i)=>{if("y"===i){const i=t[0]>e[0]?1:-1;return h(e[0]+r*i,e[1])}const n=t[1]>e[1]?1:-1;return h(e[0],e[1]+r*n)};export{w as GridSnappingEngine};