@arcgis/core/views/2d/engine/webgl/VideoScreenRenderer.js

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

/* COPYRIGHT Esri - https://js.arcgis.com/5.0.19/LICENSE.txt */
import{disposeMaybe as e}from"../../../../core/maybe.js";import{create as t}from"../../../../core/libs/gl-matrix-2/factories/vec2f64.js";import{create as r}from"../../../../core/libs/gl-matrix-2/factories/vec4f32.js";import o from"../../../../geometry/Point.js";import{load as s,execute as i}from"../../../../geometry/operators/projectOperator.js";import{DisplayObject as a}from"../DisplayObject.js";import{VideoScreenTechnique as n}from"./shaderGraph/techniques/videoScreenRenderer/VideoScreenTechnique.js";import{ColorAttachment0 as c,SizedPixelFormat as d}from"../../../webgl/enums.js";import{FramebufferObject as h}from"../../../webgl/FramebufferObject.js";import u from"../../../webgl/Texture.js";import{TextureDescriptor as l}from"../../../webgl/TextureDescriptor.js";class m extends a{constructor(e,t){super(),this._controlPointsOwner=t,this.readbackScreenCoords=r(),this.videoTextureCoords=new Array(36),this.overlayTextureCoords=new Array(36),this._prevFBO=null,this._acquiredFBO=null,this._isBound=!1,this._hasCoordinates=!1,this._geIsLoaded=!1,this._ndcRect=[0,0,2,2],this._technique=new n,this.visible=!1,this.stage=e;for(let r=0;r<6;r++){const e=r/5;for(let t=0;t<6;t++){const o=t/5;this.videoTextureCoords[6*r+t]={u:o,v:e}}}}getMesh(e){throw new Error("Method not implemented.")}destroy(){super.destroy(),e(this._readbackTexture)}bind(e){const{context:t,pixelRatio:r,state:o}=e;if(this._update(e),!this.ready||0===this.readbackScreenCoords[2]||0===this.readbackScreenCoords[3])return this.requestRender(),!1;const{size:s}=o,i=Math.round(r*s[0]),a=Math.round(r*s[1]),n=new l(i,a);return n.samplingMode=9729,n.wrapMode=33071,this._acquiredFBO||(this._acquiredFBO=new h(t,n)),this._acquiredFBO.resize(i,a),t.bindFramebuffer(this._acquiredFBO),this._isBound=!0,!0}unbind(e){if(!this._isBound)return;const{context:t,pixelRatio:r,state:o}=e,{size:s}=o,i=this._acquiredFBO;if(!i.getColorTexture(c))throw new Error("Failed to get color texture from FBO.");const a=this._getReadbackTexture(e),n=this.readbackScreenCoords,d=Math.round(r*n[0]),h=Math.round(r*(s[1]-n[1]))-a.descriptor.height,u=d+a.descriptor.width,l=h+a.descriptor.height,m=Math.max(d,0),_=Math.max(h,0),b=Math.min(u,i.width)-m,f=Math.min(l,i.height)-_;b>0&&f>0&&i.copyToTexture(m,_,b,f,m-d,_-h,a),t.bindFramebuffer(this._prevFBO)}_update(e){const{state:r}=e,a=this._controlPointsOwner,n=a.groundControlPoints(),c=a.getSize(),d=r.size,h=n?.length;if(!h)return;if(s().then(()=>{this._geIsLoaded=!0}),!this._geIsLoaded)return void this.requestRender();const u=c[0],l=c[1],m=d[0],_=l/d[1],b=u/m;if(_>b){const e=b/_*2,t=(2-e)/2;this._ndcRect[0]=-1+t,this._ndcRect[1]=1,this._ndcRect[2]=e,this._ndcRect[3]=2}else{const e=_/b*2,t=(2-e)/2;this._ndcRect[0]=-1,this._ndcRect[1]=1-t,this._ndcRect[2]=2,this._ndcRect[3]=e}const f=new Array(h),x=r.spatialReference;for(let t=0;t<h;t++){const{lat:e,lon:r}=n[t],s=new o(r,e);f[t]=i(s,x)}const p=[];let M=1/0,g=1/0,w=-1/0,C=-1/0;for(const o of f){const e=t();r.toScreen(e,o.x,o.y),p.push({x:e[0],y:e[1]}),M=Math.min(M,e[0]),g=Math.min(g,e[1]),w=Math.max(w,e[0]),C=Math.max(C,e[1])}const R=[M,C],k=[w,g];this.readbackScreenCoords[0]=Math.max(Math.floor(R[0]),0),this.readbackScreenCoords[1]=Math.max(Math.floor(k[1]),0),this.readbackScreenCoords[2]=Math.ceil(k[0]),this.readbackScreenCoords[3]=Math.ceil(R[1]);for(let t=0;t<p.length;t++){const e=p[t],r=(e.x-M)/(w-M),o=(C-e.y)/(C-g);this.overlayTextureCoords[t]={u:r,v:o}}this._hasCoordinates=!0}_createTransforms(){return null}doRender(e){this._readbackTexture&&this._hasCoordinates?this._technique.render(e,{texture:this._readbackTexture,textureCoords:this.overlayTextureCoords,opacity:1,ndcRect:this._ndcRect}):this.requestRender()}_getReadbackTexture(e){const{context:t,pixelRatio:r}=e,o=Math.round(r*Math.abs(this.readbackScreenCoords[2]-this.readbackScreenCoords[0])),s=Math.round(r*Math.abs(this.readbackScreenCoords[3]-this.readbackScreenCoords[1]));if(this._readbackTexture)this._readbackTexture.resize(o,s);else{const e=new l(o,s);e.wrapMode=33071,e.internalFormat=d.RGBA8,this._readbackTexture=new u(t,e)}return this._readbackTexture}}export{m as default};