@arcgis/core
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ArcGIS Maps SDK for JavaScript: A complete 2D and 3D mapping and data visualization API
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JavaScript
/* COPYRIGHT Esri - https://js.arcgis.com/5.0.8/LICENSE.txt */
import{clamp as t}from"../../../../core/mathUtils.js";import{set as n,copy as o,negate as r}from"../../../../core/libs/gl-matrix-2/math/vec3.js";import{create as e}from"../../../../core/libs/gl-matrix-2/factories/vec3f64.js";import{add as i,elementwiseProduct as s,scalarProduct as c}from"../lib/LongVectorMath.js";import{MainLight as f,FillLight as h,AmbientLight as g,SphericalHarmonicsAmbientLight as a}from"./Lightsources.js";function l(t){return(t+1)*(t+1)}function u(n){return t(Math.floor(Math.sqrt(n)-1),0,2)}function m(t,n,o){const r=t[0],e=t[1],i=t[2],s=o||[];return s.length=l(n),n>=0&&(s[0]=.28209479177),n>=1&&(s[1]=.4886025119*r,s[2]=.4886025119*i,s[3]=.4886025119*e),n>=2&&(s[4]=1.09254843059*r*e,s[5]=1.09254843059*e*i,s[6]=.31539156525*(3*i*i-1),s[7]=1.09254843059*r*i,s[8]=.54627421529*(r*r-e*e)),s}function p(t,n){const o=l(t),r=n||{r:[],g:[],b:[]};r.r.length=r.g.length=r.b.length=o;for(let e=0;e<o;e++)r.r[e]=r.g[e]=r.b[e]=0;return r}function b(t,n){const o=u(n.r.length);for(const e of t)r(I,e.direction),m(I,o,v),s(v,P),c(v,e.intensity[0],x),i(n.r,x),c(v,e.intensity[1],x),i(n.g,x),c(v,e.intensity[2],x),i(n.b,x);return n}function y(t,n){m(I,0,v);for(const o of t)n.r[0]+=v[0]*P[0]*o.intensity[0]*4*Math.PI,n.g[0]+=v[0]*P[0]*o.intensity[1]*4*Math.PI,n.b[0]+=v[0]*P[0]*o.intensity[2]*4*Math.PI;return n}function M(t,r,e,s){p(r,s),n(e.intensity,0,0,0);let c=!1;const l=S,u=d,m=j;l.length=0,u.length=0,m.length=0;for(const n of t)n instanceof f&&!c?(o(e.direction,n.direction),o(e.intensity,n.intensity),e.specularStrength=n.specularStrength,e.environmentStrength=n.environmentStrength,e.castShadows=n.castShadows,c=!0):n instanceof f||n instanceof h?l.push(n):n instanceof g?u.push(n):n instanceof a&&m.push(n);b(l,s),y(u,s);for(const n of m)i(s.r,n.r),i(s.g,n.g),i(s.b,n.b)}const S=[],d=[],j=[],v=[0],x=[0],I=e(),P=[3.141593,2.094395,2.094395,2.094395,.785398,.785398,.785398,.785398,.785398];export{M as combineLights,m as computeCoefficients,p as initSHCoefficients,l as numberOfCoefficients,u as orderFromNumberOfCoefficients,y as projectAmbientLights,b as projectFillLights};