@doegis/core
Version:
DOE GIS API
3 lines (1 loc) • 2.04 kB
JavaScript
import{clamp as t}from"../../../../core/mathUtils.js";import{o as n,s as o,c as r}from"../../../../chunks/vec3.js";import{c as e}from"../../../../chunks/vec3f64.js";import{elementwiseProduct as s,scalarProduct as i,add as c}from"../lib/LongVectorMath.js";import{MainLight as f,FillLight as h,AmbientLight as a,SphericalHarmonicsAmbientLight as g}from"./Lightsources.js";function u(t){return(t+1)*(t+1)}function l(n){return t(Math.floor(Math.sqrt(n)-1),0,2)}function m(t,n,o){const r=t[0],e=t[1],s=t[2],i=o||[];return i.length=u(n),n>=0&&(i[0]=.28209479177),n>=1&&(i[1]=.4886025119*r,i[2]=.4886025119*s,i[3]=.4886025119*e),n>=2&&(i[4]=1.09254843059*r*e,i[5]=1.09254843059*e*s,i[6]=.31539156525*(3*s*s-1),i[7]=1.09254843059*r*s,i[8]=.54627421529*(r*r-e*e)),i}function p(t,n){const o=u(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 y(t,o){const r=l(o.r.length);for(const e of t)n(P,e.direction),m(P,r,v),s(v,k),i(v,e.intensity[0],I),c(o.r,I),i(v,e.intensity[1],I),c(o.g,I),i(v,e.intensity[2],I),c(o.b,I);return o}function b(t,n){m(P,0,v);for(const o of t)n.r[0]+=v[0]*k[0]*o.intensity[0]*4*Math.PI,n.g[0]+=v[0]*k[0]*o.intensity[1]*4*Math.PI,n.b[0]+=v[0]*k[0]*o.intensity[2]*4*Math.PI;return n}function M(t,n,e,s){p(n,s),o(e.intensity,0,0,0);let i=!1;const u=S,l=d,m=j;u.length=0,l.length=0,m.length=0;for(const o of t)o instanceof f&&!i?(r(e.direction,o.direction),r(e.intensity,o.intensity),e.specularStrength=o.specularStrength,e.environmentStrength=o.environmentStrength,e.castShadows=o.castShadows,i=!0):o instanceof f||o instanceof h?u.push(o):o instanceof a?l.push(o):o instanceof g&&m.push(o);y(u,s),b(l,s);for(const o of m)c(s.r,o.r),c(s.g,o.g),c(s.b,o.b)}const S=[],d=[],j=[],v=[0],I=[0],P=e(),k=[3.141593,2.094395,2.094395,2.094395,.785398,.785398,.785398,.785398,.785398];export{M as combineLights,m as computeCoefficients,p as initSHCoefficients,u as numberOfCoefficients,l as orderFromNumberOfCoefficients,b as projectAmbientLights,y as projectFillLights};