@arcgis/core/views/3d/webgl-engine/lib/Viewshed.js

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

/* COPYRIGHT Esri - https://js.arcgis.com/5.0.8/LICENSE.txt */
import{__decorate as e}from"tslib";import s from"../../../../core/Collection.js";import{deg2rad as t}from"../../../../core/mathUtils.js";import{disposeMaybe as r}from"../../../../core/maybe.js";import{watch as i,initial as o,when as a,sync as n}from"../../../../core/reactiveUtils.js";import{property as h,subclass as d}from"../../../../core/accessorSupport/decorators.js";import{translate as c,fromTranslation as p,scale as w,mul as l}from"../../../../core/libs/gl-matrix-2/math/mat4.js";import{create as m}from"../../../../core/libs/gl-matrix-2/factories/mat4f64.js";import{sub as f,distance as u}from"../../../../core/libs/gl-matrix-2/math/vec3.js";import{create as v,fromValues as _}from"../../../../core/libs/gl-matrix-2/factories/vec3f64.js";import{Sphere as V}from"../../../../geometry/support/sphere.js";import{InternalRenderCategory as g}from"../../webgl.js";import M from"../../webgl/RenderNode.js";import{ViewshedShadowMap as b}from"./ViewshedShadowMap.js";import{V as y}from"../../../../chunks/Viewshed.glsl.js";import{ViewshedTechnique as S}from"../shaders/ViewshedTechnique.js";let j=class extends M{get shadowMap(){return this._shadowMap}get hasViewsheds(){return this._viewsheds.length>0}get _contentPixelRatio(){return this.view.state.contentPixelRatio}get _viewshedsInView(){return this._viewsheds.items.filter(e=>P(this.view,e))}constructor(e){super(e),this.isDecoration=!1,this._passParameters=new y,this._viewsheds=new s,this._shadowMap=null,this.consumes={required:[g.VIEWSHED,"normals"]},this.produces=g.VIEWSHED,this.requireGeometryDepth=!0}initialize(){this._shadowMap=new b(this.fboCache),this.addHandles([i(()=>this.view.resolutionScale,e=>{const s=this._shadowMap;s&&(s.settings.textureSizeQuality=e)},o),a(()=>!this.hasViewsheds,()=>this._shadowMap?.dispose()),i(()=>this._viewshedsInView.map(e=>[e.observerRenderSpace,e.heading,e.tilt,e.farDistance,e.horizontalFieldOfView,e.verticalFieldOfView]),()=>this.requestRender(1),n)])}destroy(){this._shadowMap=r(this._shadowMap)}precompile(){if(this.hasViewsheds){this.techniques.precompile(S);for(const e of this._viewshedsInView)if(this._shadowMap?.isActive(e))return void this.view.stage.renderer.precompileViewshedShadowMap()}}render(e){const s=this.bindParameters,t=this.renderingContext,r=e.find(({name:e})=>e===g.VIEWSHED);if(!this.hasViewsheds||!s.depth||this.isDecoration&&!s.decorations)return r;this._passParameters.shadowMap=this._shadowMap??this._passParameters.shadowMap,this._passParameters.normals=e.find(({name:e})=>"normals"===e)?.getTexture();const i=this.techniques.get(S);if(!i?.compiled)return this.requestRender(1),r;const o=this.view.stage.renderer.isFeatureEnabled(8);for(const a of this._viewshedsInView){if(!this._renderShadowCubeMap(s,a,o)||!this._shadowMap?.ready)continue;const e=this._setupViewshedParameters(a,s.camera);t.bindFramebuffer(r.fbo),t.bindTechnique(i,s,e),t.screen.draw()}return this.shadowMap?.dispose(),r}updateViewsheds(e){const s=this._viewsheds,{removes:t,adds:r}=e;if(t&&(Array.isArray(t)?s.removeMany(t):s.remove(t)),r)if(Array.isArray(r)){const e=r.filter(e=>!s.includes(e));s.addMany(e)}else s.includes(r)||s.add(r)}_renderShadowCubeMap(e,s,t){const r=this._shadowMap;if(!r)return!1;const i=this.view.basemapTerrain.hasStencilEnabledExtents,o=r.start(e.camera,s,t,this._contentPixelRatio,i);return o&&r.faces.forEach(e=>this.view.stage.renderer.renderViewshedShadowMap(e)),r.finish(),o}_setupViewshedParameters(e,s){const r=this._shadowMap;if(!r)return this._passParameters;const i=this._passParameters,o=e.effectiveObserverRenderSpace;i.localOrigin=o,i.observerOffset=f(E,e.observerRenderSpace,e.effectiveObserverRenderSpace),i.fovs=[t(e.horizontalFieldOfView),t(e.verticalFieldOfView)],i.headingAndTilt=[t(e.heading),t(e.tiltParallelToSurface)],i.upVector=e.tiltedUpVector;const a=R(e.targetRenderSpace,o);i.targetVector=a;const n=new Array,h=new Array;for(let t=0;t<r.numActiveFaces;t++)c(I,r.viewshedViewMatrices[t],o),n.push(...I),x(r.viewshedProjectionMatrices[t],I,D),h.push(...D);return i.viewMatrices=n,i.projectionMatrices=h,i.volumeOffset=this.selectedViewshed?.()===e.viewshed?A(e,this.view,s.eye):0,i}get test(){return{viewsheds:this._viewsheds,shadowMap:this._shadowMap,viewshedsInView:this._viewshedsInView}}};function R(e,s){const t=v();return f(t,e,s)}function x(e,s,t){const r=_(.5,.5,.5);return p(t,r),w(t,t,r),l(t,t,e),l(t,t,s),t}function P(e,s){const t=new V(s.observerRenderSpace,s.farDistanceRenderSpace);return!!e.ready&&e.frustum.intersectsSphere(t)}function A(e,s,t){if(null==e)return 0;const{observerRenderSpace:r,targetRenderSpace:i}=e,o=u(t,r)>u(t,i)?e.observer:e.target;return s.pixelSizeAt(o)}e([h()],j.prototype,"selectedViewshed",void 0),e([h()],j.prototype,"isDecoration",void 0),e([h()],j.prototype,"shadowMap",null),e([h()],j.prototype,"hasViewsheds",null),e([h()],j.prototype,"_contentPixelRatio",null),e([h()],j.prototype,"_viewshedsInView",null),e([h()],j.prototype,"consumes",void 0),e([h()],j.prototype,"produces",void 0),j=e([d("esri.views.3d.webgl-engine.lib.Viewshed")],j);const E=v(),I=m(),D=m();export{j as Viewshed,A as computeOffsetScale};