@arcgis/core/views/animation/pointToPoint/Segment.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/4.33/esri/copyright.txt for details.
*/
import{deg2rad as t}from"../../../core/mathUtils.js";import{Seconds as i}from"../../../core/time.js";class o{get time(){return this._time}constructor(t){t&&this.update(t)}update(t){t&&(this.definition?this.definition.copyFrom(t):this.definition=t.clone()),this._updatePrecomputedVariables(),this._updatePixelFlow()}_updatePrecomputedVariables(){const t=this.definition,i=t.compared,o=i.sourceZoom,e=i.targetZoom;this._zoomSign=o>e?1:-1,this._panPixelsAtSource=i.pan*t.source.pixelsPerPanAtZoom(o);const n=(t.source.pixelsPerRotate()+t.target.pixelsPerRotate())/2;this._rotatePixels=i.rotate*n}_updatePixelFlow(){const t=this.definition.compared.sourceZoom,o=this.definition.compared.targetZoom,{hasZoom:e,hasPan:n,hasRotate:s}=this.definition;let h=0,a=0;e&&(n&&(h=(o/t-1)/(-1/(this._zoomSign*this.definition.halfWindowSize)*Math.LN2*this._panPixelsAtSource)),s&&(a=this._zoomSign*(Math.log(t/o)/Math.LN2)*this.definition.halfWindowSize/this._rotatePixels)),this._zoomPixelFlow=0,this._panPixelFlow=0,this._rotatePixelFlow=0;const r=this.definition.desiredPixelFlow;if(e&&n&&s){const t=h+a+h*a;this._zoomPixelFlow=h*a/t*r,this._panPixelFlow=a/t*r,this._rotatePixelFlow=h/t*r}else if(e&&n){const t=1+h;this._zoomPixelFlow=h/t*r,this._panPixelFlow=1/t*r}else if(e&&s){const t=1+a;this._zoomPixelFlow=a/t*r,this._rotatePixelFlow=1/t*r}else if(n&&s){const t=this._panPixelsAtSource/this._rotatePixels,i=1+t;this._panPixelFlow=t/i*r,this._rotatePixelFlow=1/i*r}else n?this._panPixelFlow=r:e?this._zoomPixelFlow=r:s&&(this._rotatePixelFlow=r);if(this._time=i(Math.max(this.rotateTime,this.zoomTime,this.panTime)),this.fovTime>this._time){const t=this.fovTime/this._time;this._time=this.fovTime,this._zoomPixelFlow/=t,this._panPixelFlow/=t,this._rotatePixelFlow/=t}}get rotateTime(){return this.definition.hasRotate?i(this._rotatePixels/this._rotatePixelFlow):i(0)}get zoomTime(){return this.definition.hasZoom?i(this._zoomSign*(Math.log(this.definition.compared.sourceZoom/this.definition.compared.targetZoom)/Math.LN2)*this.definition.halfWindowSize/this._zoomPixelFlow):i(0)}get fovTime(){return this.definition.hasFov?i(Math.abs(this.definition.compared.fov)/e):i(0)}get panTime(){if(!this.definition.hasPan)return i(0);if(this.definition.hasZoom){const t=-1/(this._zoomSign*this.definition.halfWindowSize)*Math.LN2,o=t*this._panPixelsAtSource;return i(Math.log(o*(this._zoomPixelFlow/this._panPixelFlow)+1)/(t*this._zoomPixelFlow))}return i(this._panPixelsAtSource/this._panPixelFlow)}_interpolateComponentsZoom(t){if(0===t||1===t)return t;if(this.definition.hasZoom){const i=this.definition.compared.sourceZoom,o=this.definition.compared.targetZoom;return(i*(i/o)**-t-i)/(o-i)}return t}_interpolateComponentsFov(t){if(0===t)return this.definition.segmentStart;if(1===t)return this.definition.segmentEnd;if(this.definition.hasFov){const{segmentStart:i,segmentEnd:o}=this.definition;return i+t*(o-i)}return this.definition.segmentStart}_interpolateComponentsPan(t){if(0===t||1===t)return t;if(this.definition.hasPan&&this.definition.hasZoom){const i=-1/(this._zoomSign*this.definition.halfWindowSize)*this._zoomPixelFlow;return 1/this._panPixelsAtSource*(this._panPixelFlow*(2**(i*t*this._time)-1))/(i*Math.LN2)}return t}_interpolateComponentsRotate(t){return t}interpolateComponentsAt(t,i){t=Math.min(Math.max(t,0),1),i.zoom=this._interpolateComponentsZoom(t),i.pan=this._interpolateComponentsPan(t),i.rotate=this._interpolateComponentsRotate(t),i.zoomOffset=0,i.fov=this._interpolateComponentsFov(t)}}const e=t(45);export{o as Segment};