@arcgis/core/views/3d/support/sunUtils.js

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

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See https://js.arcgis.com/4.32/esri/copyright.txt for details.
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import{lerp as t,clamp as e}from"../../../core/mathUtils.js";import{fromRotation as i,identity as o,rotateX as n,rotateY as a,rotateZ as l}from"../../../core/libs/gl-matrix-2/math/mat4.js";import{create as r}from"../../../core/libs/gl-matrix-2/factories/mat4f64.js";import{copy as c,lerp as s}from"../../../core/libs/gl-matrix-2/math/vec2.js";import{fromValues as u,create as m}from"../../../core/libs/gl-matrix-2/factories/vec2f64.js";import{i as g,m as f,n as d,h,t as b,g as y,c as p}from"../../../chunks/vec32.js";import{fromValues as A,create as w,clone as x}from"../../../core/libs/gl-matrix-2/factories/vec3f64.js";import{ViewingMode as N}from"../../ViewingMode.js";import{S as v}from"../../../chunks/SunCalc.js";import{angle as T}from"./mathUtils.js";const M={local:{altitude:1500,ambientAtNight:.1,ambientAtNoon:.45,ambientAtTwilight:.2,directAtNoon:.65,directAtTwilight:.7},global:{altitude:8e5,ambient:.015,direct:.75},planarDirection:{localAltitude:1e4,globalAltitude:1e6,globalAngles:{azimuth:1.3*Math.PI,altitude:.6*Math.PI}}};class S{constructor(t,e){this.direct=t,this.ambient=e}}function j(i,o,n,a,l,r){g(r.ambient.color,1,1,1),r.ambient.intensity=M.global.ambient,g(r.direct.color,1,1,1),r.direct.intensity=M.global.direct;const c=o[2],s=e((Math.abs(c)-M.local.altitude)/(M.global.altitude-M.local.altitude),0,1);let u;if(r.globalFactor=s,null!=i&&(u=v.getTimes(i,o[1],o[0])),s<1){let e;if(null!=i)e=ot(i,u,a);else{const t=L(a);e={direct:{intensity:M.local.directAtNoon*t.direct,color:A(1,1,1)},ambient:{intensity:M.local.ambientAtNoon*t.ambient,color:A(1,1,1)},timeOfDay:"early afternoon"}}f(r.ambient.color,e.ambient.color,r.ambient.color,s),r.ambient.intensity=t(e.ambient.intensity,r.ambient.intensity,s),f(r.direct.color,e.direct.color,r.direct.color,s),r.direct.intensity=t(e.direct.intensity,r.direct.intensity,s),r.specularStrength="rainy"===a||"snowy"===a||"foggy"===a?0:1,r.environmentStrength="rainy"===a?.7:"snowy"===a||"foggy"===a?.75:1}r.noonFactor=null!=i?F(i,u):1,null!=i?P(i,o,n,r.direct.directionToLightSource):O(l,n,r.direct.directionToLightSource)}function O(t,e,o){e===N.Global?d(lt,t.eye):g(lt,0,0,1),h(rt,t.viewForward,-1);const n=T(rt,lt),a=Math.max(n-2*st,0),l=.85*a/(a+1),r=Math.max(st,n-st-l);i(at,-r,t.viewRight),b(o,rt,at),y(o,o,h(ct,t.viewRight,ut)),d(o,o)}function P(t,i,r,c){const s=H,u=o(G);if(r===N.Global)v.getPosition(t,0,0,s),g(c,0,0,-1),n(u,u,-s.azimuth),a(u,u,-s.altitude),b(c,c,u);else{const o=M.planarDirection,a=o.globalAngles,r=i[2];let m=(Math.abs(r)-o.localAltitude)/(o.globalAltitude-o.localAltitude);m=e(m,0,1),m<1?(v.getPosition(t,i[1],i[0],s),s.azimuth=(1-m)*s.azimuth+m*a.azimuth,s.altitude=(1-m)*s.altitude+m*a.altitude):(s.azimuth=a.azimuth,s.altitude=a.altitude),g(c,0,-1,0),l(u,u,-s.azimuth),n(u,u,-s.altitude),b(c,c,u)}}function z(t,e){if(e===N.Global)return!0;const i=M.planarDirection;return Math.abs(t)<i.localAltitude}function D(t,e,i,o,n){const a=t.getTime(),l=e.getTime()-a,r=Math.floor(l/i)+1,c=new Array(r);for(let s=0;s<r;++s)nt.setTime(a+i*s),c[s]=w(),P(nt,o,n,c[s]);return c}const E=A(.5773502691896258,-.5773502691896258,.5773502691896258);class I{constructor(){this.ambient={color:A(1,1,1),intensity:.55},this.direct={color:A(1,1,1),intensity:.55,directionToLightSource:x(E)},this.noonFactor=.5,this.globalFactor=0,this.specularStrength=1,this.environmentStrength=1}}const G=r(),H={azimuth:0,altitude:0};function F(t,i){const o=t.valueOf();let n,a;i.polarException===v.PolarException.MIDNIGHT_SUN?(n=o-60*(t.getHours()+48)*60*1e3-60*t.getMinutes()*1e3,a=n+432e6):i.polarException===v.PolarException.POLAR_NIGHT?(n=o-2,a=o-1):(n=i.sunrise.valueOf(),a=i.sunset.valueOf());const l=n+(a-n)/2;return 1-e(Math.abs(o-l)/432e5,0,1)}function L(t){switch(t){case"disabled":case"sunny":case"cloudy":return new S(1,1);case"rainy":return new S(.4,1.2);case"snowy":return new S(.5,1.3);case"foggy":return new S(.2,1.6)}}function R(t,e){const i=(t[0]+t[1]+t[2])/3;t[0]+=(i-t[0])*e,t[1]+=(i-t[1])*e,t[2]+=(i-t[2])*e}const U=A(.01,.01,.01),_=A(1,.6,.5),k=A(1,.98,.98),V=A(1,1,1),C=A(.8,.8,1),q=A(.8,.8,1),B=A(.98,.98,1),J=A(1,1,1),K=u(.01,M.local.ambientAtNight),Q=u(M.local.directAtTwilight,M.local.ambientAtTwilight),W=u(.9*M.local.directAtNoon,M.local.ambientAtNoon),X=u(M.local.directAtNoon,M.local.ambientAtNoon),Y=W,Z=k,$=B,tt=Q,et=_,it=q;function ot(t,e,i){const o=t.valueOf();let n,a;e.polarException===v.PolarException.MIDNIGHT_SUN?(n=o-60*(t.getHours()+48)*60*1e3-60*t.getMinutes()*1e3,a=n+432e6):e.polarException===v.PolarException.POLAR_NIGHT?(n=o-2,a=o-1):(n=e.sunrise.valueOf(),a=e.sunset.valueOf());const l=a-n,r=n+l/2,u=l/4,g=r-u,d=r+u,h=.06*l,b=n-h/2,y=n+h/2,A=a-h/2,x=a+h/2,N=m(),T=w(),M=w();let S="";if(o<b||o>x)c(N,K),p(T,U),p(M,C),S="night";else if(o<y){const t=(o-b)/(y-b);s(N,K,Q,t),f(T,U,_,t),f(M,C,q,t),S="sun rising"}else if(o<g){const t=(o-y)/(g-y);s(N,Q,W,t),f(T,_,k,t),f(M,q,B,t),S="early morning"}else if(o<r){const t=(o-g)/(r-g);s(N,W,X,t),f(T,k,V,t),f(M,B,J,t),S="late morning"}else if(o<d){const t=(o-r)/(d-r);s(N,X,Y,t),f(T,V,Z,t),f(M,J,$,t),S="early afternoon"}else if(o<A){const t=(o-d)/(A-d);s(N,Y,tt,t),f(T,Z,et,t),f(M,$,it,t),S="late afternoon"}else if(o<x){const t=(o-A)/(x-A);s(N,tt,K,t),f(T,et,U,t),f(M,it,C,t),S="sun setting"}let j=0;switch(i){case"rainy":case"foggy":j=.8;break;case"snowy":j=.5}j>0&&(R(T,j),R(M,j));const O=L(i);return{direct:{intensity:N[0]*O.direct,color:T},ambient:{intensity:N[1]*O.ambient,color:M},timeOfDay:S}}const nt=new Date(0),at=r(),lt=w(),rt=w(),ct=w(),st=.25,ut=.2;export{I as ColorAndIntensity,j as computeColorAndIntensity,D as computeDirectionsOverTime,z as computeShadowsEnabled,O as computeVirtualLightDirection};