@arcgis/core/views/3d/environment/ChapmanAtmosphere.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{_ as e}from"../../../chunks/tslib.es6.js";import{unitRGBAFromColor as t}from"../../../core/colorUtils.js";import{clamp as r,lerp as s}from"../../../core/mathUtils.js";import{disposeMaybe as i}from"../../../core/maybe.js";import{watch as o,syncAndInitial as a}from"../../../core/reactiveUtils.js";import"../../../core/Logger.js";import"../../../core/has.js";import"../../../core/RandomLCG.js";import"../../../core/Error.js";import{subclass as n}from"../../../core/accessorSupport/decorators/subclass.js";import{set as m}from"../../../core/libs/gl-matrix-2/math/vec2.js";import{i as h,l as c,k as p}from"../../../chunks/vec32.js";import{s as u}from"../../../chunks/vec42.js";import{ZEROS as d}from"../../../core/libs/gl-matrix-2/factories/vec4f64.js";import{earth as f}from"../../../geometry/support/Ellipsoid.js";import{InternalRenderCategory as l}from"../webgl.js";import{innerAtmosphereDepth as g,computeInnerAltitudeFade as b}from"./atmosphereUtils.js";import{ChapmanAtmospherePassParameters as _,ChapmanAtmosphereTechnique as P}from"./ChapmanAtmosphereTechnique.js";import{ChapmanAtmosphereTechniqueConfiguration as j}from"./ChapmanAtmosphereTechniqueConfiguration.js";import{ColorFormat as w}from"../webgl-engine/core/FBOCacheFormats.js";import{OpaqueEnvironment as v}from"../webgl-engine/effects/OpaqueEnvironment.js";import{RenderRequestType as q}from"../webgl-engine/lib/basicInterfaces.js";import{createQuadVAO as A,Layout as T}from"../webgl-engine/lib/glUtil3D.js";import{applyTextureResizeModulo as x}from"../webgl-engine/lib/textureUtils.js";import{A as C}from"../../../chunks/AtmosphereCompositing.glsl.js";import{AtmosphereCompositingTechnique as R}from"../webgl-engine/shaders/AtmosphereCompositingTechnique.js";import{DepthStencilAttachment as E,PrimitiveType as D}from"../../webgl/enums.js";import M from"../../../webscene/background/ColorBackground.js";let U=class extends v{constructor(){super(...arguments),this.requireGeometryDepth=!0,this._compositingPassParameters=new C,this._vao=null,this._passParameters=new _,this._configuration=new j}initialize(){this.techniques.precompile(P,this._configuration),this.techniques.precompile(R),this._configuration.reduced=!0,this.techniques.precompile(P,this._configuration),this._configuration.reduced=!1,this.addHandles([o((()=>this.view.environment.background),(e=>{const r=e instanceof M?t(e.color):d;h(this._passParameters.backgroundColor,r[0]*r[3],r[1]*r[3],r[2]*r[3])}),a),o((()=>this.view.stage?.renderer?.fullResolutionAtmosphere),(e=>this._configuration.reduced=!e),a),o((()=>this.view.environment.atmosphereEnabled),(e=>e?this._enable():this._disable()),a)])}destroy(){this._vao=i(this._vao)}render(e){const t=e.find((({name:e})=>e===l.OPAQUE_ENVIRONMENT));if(!this.bindParameters.mainDepth)return t;const r=this.renderingContext;this._vao??=A(r,T.Pos2Tex);const i=t.getAttachment(E);this._update();const o=this.techniques.get(P,this._configuration);if(!o.compiled)return this.requestRender(q.UPDATE),t;if(!this._configuration.reduced)return t.detachDepth(),r.bindFramebuffer(t.fbo),r.bindTechnique(o,this.bindParameters,this._passParameters),r.bindVAO(this._vao),r.drawArrays(D.TRIANGLE_STRIP,0,4),t.attachDepth(i),t;const a=this.techniques.get(R);if(!a.compiled)return this.requestRender(q.UPDATE),t;const n=r.getViewport(),m=this.bindParameters.camera,h=c(m.eye)-f.radius;let p;const u=f.atmosphereHeight;if(h<u){const e=Math.min(1,Math.max(0,h/u));p=s(.2,.3,e)}else{const e=Math.min(1,Math.max(0,(h-u)/(15*u)));p=s(.3,.6,e)}const d=this.renderingContext.parameters.maxTextureSize,g=x(Math.round(p*m.fullViewport[2]),d),b=x(Math.round(p*m.fullViewport[3]),d);r.setViewport(0,0,g,b);const _=this.fboCache.acquire(g,b,"chapman",w.RGBA8UNORM);return r.bindFramebuffer(_.fbo),r.clearFramebuffer([0,0,0,1],!0,!0),r.bindTechnique(o,this.bindParameters,this._passParameters),r.bindVAO(this._vao),r.drawArrays(D.TRIANGLE_STRIP,0,4),r.setViewport(n.x,n.y,n.width,n.height),this._compositingPassParameters.color=_.getTexture(),t.detachDepth(),r.bindFramebuffer(t.fbo),r.bindTechnique(a,this.bindParameters,this._compositingPassParameters),r.screen.draw(),t.attachDepth(i),_.release(),t}_update(){const e=this.bindParameters.camera,t=p(e.eye),s=Math.sqrt(t),i=t-this._passParameters.radii[1]**2,o=r((s-this._passParameters.radii[0])/f.atmosphereHeight,0,1);u(this._passParameters.heightParameters,s,t,i,o);const a=this.view.basemapTerrain?.getLowerBoundRadius()??0;m(this._passParameters.radii,a,a+f.atmosphereHeight),this._passParameters.innerFadeDistance=2*Math.sqrt((2*a-g)*g),this._passParameters.altitudeFade=b(s-a)}};U=e([n("esri.views.3d.environment.ChapmanAtmosphere")],U);export{U as ChapmanAtmosphere};