interpolateHeatmapLayer.js

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i=t[0]*e[0]+t[1]*e[4]+t[2]*e[8]+t[3]*e[12];if(0!=i){i=1/i;for(let t=0;t<16;t++)e[t]=e[t]*i;return e}}}function e(t,e){const i=t.createShader(t.VERTEX_SHADER);return h(t,i,e)}function s(t,e){const i=t.createShader(t.FRAGMENT_SHADER);return h(t,i,e)}function n(t,e,i){const r=t.createProgram();if(t.attachShader(r,e),t.attachShader(r,i),t.linkProgram(r),!t.getProgramParameter(r,t.LINK_STATUS))throw t.getProgramInfoLog(r);return r}function h(t,e,i){if(t.shaderSource(e,i),t.compileShader(e),!t.getShaderParameter(e,t.COMPILE_STATUS))throw t.getShaderInfoLog(e);return e}class a{constructor(t,e,i,r,s,n){this.gl=t,this.framebufferWidth=e,this.framebufferHeight=i,this.points=r,this.pointsDistance=s,this.options=n,this.#t(),this.#e(),this.#i(),this.#r(),this.#s()}setFrameBufferSize(t,e){this.framebufferWidth=t,this.framebufferHeight=e,this.gl.bindTexture(this.gl.TEXTURE_2D,this.texture),this.gl.texImage2D(this.gl.TEXTURE_2D,0,this.gl.RGBA,this.framebufferWidth,this.framebufferHeight,0,this.gl.RGBA,this.gl.FLOAT,null)}delete(){this.gl.deleteTexture(this.texture),this.gl.deleteBuffer(this.verticesBuffer),this.gl.deleteFramebuffer(this.framebuffer)}draw(e){this.gl.enable(this.gl.BLEND),this.gl.blendFunc(this.gl.ONE,this.gl.ONE),this.gl.useProgram(this.program),this.gl.bindFramebuffer(this.gl.FRAMEBUFFER,this.framebuffer),this.gl.viewport(0,0,this.framebufferWidth,this.framebufferHeight),this.gl.clear(this.gl.COLOR_BUFFER_BIT|this.gl.DEPTH_BUFFER_BIT),this.gl.uniformMatrix4fv(this.uMvpMatrix,!1,e),this.gl.uniform1f(this.uP,this.options.p),this.gl.uniform2f(this.uFramebufferSize,this.framebufferWidth,this.framebufferHeight),this.options.pointRadius>0&&this.options.fasterPointRadius&&(this.gl.uniform1i(this.u_FasterPointRadius,1),this.gl.uniformMatrix4fv(this.uMvpMatrixInverse,!1,t.inverse(e)));for(let i=0;i<this.points.length;i++){const r=this.points[i],s=t.dot(e,[r[0],r[1],0,1]);this.gl.uniform2f(this.uXiImageSpace,s[0]/s[3],s[1]/s[3]),this.gl.uniform1f(this.uUi,r[2]),this.gl.uniform2f(this.uXi,r[0],r[1]),this.gl.uniform1f(this.uPointRadius,this.pointsDistance[i]),this.gl.bindBuffer(this.gl.ARRAY_BUFFER,this.verticesBuffer),this.gl.enableVertexAttribArray(this.aPosition),this.gl.vertexAttribPointer(this.aPosition,2,this.gl.FLOAT,!1,0,0),this.gl.drawArrays(this.gl.TRIANGLE_STRIP,0,this.verticesNumber)}}updatePointsAndDistances(t,e){this.points=t,this.pointsDistance=e}#t(){const t=i(854),r=i(499),h=e(this.gl,t),a=s(this.gl,r);this.program=n(this.gl,h,a)}#e(){this.aPosition=this.gl.getAttribLocation(this.program,"a_Position"),this.uMvpMatrix=this.gl.getUniformLocation(this.program,"u_MvpMatrix"),this.uUi=this.gl.getUniformLocation(this.program,"ui"),this.uXi=this.gl.getUniformLocation(this.program,"xi"),this.uP=this.gl.getUniformLocation(this.program,"p"),this.uFramebufferSize=this.gl.getUniformLocation(this.program,"u_FramebufferSize"),this.uMvpMatrixInverse=this.gl.getUniformLocation(this.program,"u_MvpMatrixInverse"),this.uPointRadius=this.gl.getUniformLocation(this.program,"u_PointRadius"),this.uXiImageSpace=this.gl.getUniformLocation(this.program,"u_XiImageSpace"),this.u_FasterPointRadius=this.gl.getUniformLocation(this.program,"u_FasterPointRadius")}#i(){this.verticesBuffer=this.gl.createBuffer(),this.gl.bindBuffer(this.gl.ARRAY_BUFFER,this.verticesBuffer),this.gl.bufferData(this.gl.ARRAY_BUFFER,new Float32Array([1,1,-1,1,1,-1,-1,-1]),this.gl.STATIC_DRAW),this.verticesNumber=4}#r(){this.texture=this.gl.createTexture(),this.gl.bindTexture(this.gl.TEXTURE_2D,this.texture),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_WRAP_S,this.gl.CLAMP_TO_EDGE),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_WRAP_T,this.gl.CLAMP_TO_EDGE),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_MAG_FILTER,this.gl.NEAREST),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_MIN_FILTER,this.gl.NEAREST),this.gl.texImage2D(this.gl.TEXTURE_2D,0,this.gl.RGBA,this.framebufferWidth,this.framebufferHeight,0,this.gl.RGBA,this.gl.FLOAT,null),this.gl.bindTexture(this.gl.TEXTURE_2D,null)}#s(){this.framebuffer=this.gl.createFramebuffer(),this.gl.bindFramebuffer(this.gl.FRAMEBUFFER,this.framebuffer),this.gl.framebufferTexture2D(this.gl.FRAMEBUFFER,this.gl.COLOR_ATTACHMENT0,this.gl.TEXTURE_2D,this.texture,0),this.gl.bindFramebuffer(this.gl.FRAMEBUFFER,null)}}var o=i(187),u=i.n(o);class f{constructor(t,e,i,r,s,n,h){this.gl=t,this.framebufferWidth=e,this.framebufferHeight=i,this.points=r,this.pointsDistance=s,this.average=n,this.options=h,this.#t(),this.#e(),this.#i(),this.#r(),this.#s()}setFrameBufferSize(t,e){this.framebufferWidth=t,this.framebufferHeight=e,this.gl.bindTexture(this.gl.TEXTURE_2D,this.texture),this.gl.texImage2D(this.gl.TEXTURE_2D,0,this.gl.RGBA,this.framebufferWidth,this.framebufferHeight,0,this.gl.RGBA,this.gl.FLOAT,null)}delete(){this.gl.deleteTexture(this.texture),this.gl.deleteBuffer(this.verticesBuffer),this.gl.deleteBuffer(this.indicesBuffer),this.gl.deleteFramebuffer(this.framebuffer)}draw(e,i,r){const s=this.options.roi.length>0&&0==this.options.pointRadius,n=s?r.width:this.framebufferWidth,h=s?r.height:this.framebufferHeight;if(this.gl.bindTexture(this.gl.TEXTURE_2D,this.texture),this.gl.texImage2D(this.gl.TEXTURE_2D,0,this.gl.RGBA,n,h,0,this.gl.RGBA,this.gl.FLOAT,null),this.gl.disable(this.gl.BLEND),this.gl.disable(this.gl.DEPTH_TEST),this.gl.useProgram(this.program),this.gl.bindFramebuffer(this.gl.FRAMEBUFFER,this.framebuffer),this.gl.viewport(0,0,n,h),this.gl.clear(this.gl.COLOR_BUFFER_BIT),this.gl.uniformMatrix4fv(this.uMvpMatrix,!1,e),this.gl.bindBuffer(this.gl.ARRAY_BUFFER,this.verticesBuffer),this.gl.enableVertexAttribArray(this.aPosition),this.gl.vertexAttribPointer(this.aPosition,2,this.gl.FLOAT,!1,0,0),this.gl.activeTexture(this.gl.TEXTURE0),this.gl.bindTexture(this.gl.TEXTURE_2D,i),this.gl.uniform1i(this.uIDWTexture,0),this.gl.uniform2f(this.uFramebufferSize,n,h),this.gl.uniform1f(this.uOpacity,this.options.opacity),this.gl.uniform1f(this.uAverageThreshold,this.options.averageThreshold),this.gl.uniform1f(this.uAverage,this.average),this.gl.bindBuffer(this.gl.ELEMENT_ARRAY_BUFFER,this.indicesBuffer),this.options.pointRadius>0&&!this.options.fasterPointRadius)this.points.forEach(((e,i)=>{const r=new t;r.translate(e[0],e[1],0),r.scale(this.pointsDistance[i],this.pointsDistance[i],0),this.gl.uniformMatrix4fv(this.modelMatrix,!1,r.elements),this.gl.drawElements(this.gl.TRIANGLES,this.indicesNumber,this.gl.UNSIGNED_BYTE,0)}));else{const e=new t;this.gl.uniformMatrix4fv(this.modelMatrix,!1,e.elements),this.gl.drawElements(this.gl.TRIANGLES,this.indicesNumber,this.gl.UNSIGNED_BYTE,0)}}updatePointsAndDistances(t,e){this.points=t,this.pointsDistance=e}#t(){const t=i(15),r=i(106).replace("VALUE_TO_COLOR",this.options.valueToColor).replace("VALUE_TO_COLOR_4",this.options.valueToColor4),h=e(this.gl,t),a=s(this.gl,r);this.program=n(this.gl,h,a)}#e(){this.aPosition=this.gl.getAttribLocation(this.program,"a_Position"),this.uMvpMatrix=this.gl.getUniformLocation(this.program,"u_MvpMatrix"),this.uIDWTexture=this.gl.getUniformLocation(this.program,"u_IDWTexture"),this.uFramebufferSize=this.gl.getUniformLocation(this.program,"u_FramebufferSize"),this.uOpacity=this.gl.getUniformLocation(this.program,"u_Opacity"),this.uAverageThreshold=this.gl.getUniformLocation(this.program,"u_AverageThreshold"),this.uAverage=this.gl.getUniformLocation(this.program,"u_Average"),this.modelMatrix=this.gl.getUniformLocation(this.program,"modelMatrix")}#i(){const t=[];let e=[];if(this.options.pointRadius>0&&!this.options.fasterPointRadius){const i=50,r=2*Math.PI/i;t.push(0,0);for(let s=0;s<i+1;s++){const n=s*r,h=Math.cos(n),a=Math.sin(n);t.push(h,a),s<i&&e.push(0,s+1,s+2)}}else 0==this.options.roi.length?t.push(-1,-1,-1,1,1,1,1,-1):this.options.roi.forEach((e=>{const i=mapboxgl.MercatorCoordinate.fromLngLat(e);t.push(i.x,i.y)})),e=u()(t);this.verticesBuffer=this.gl.createBuffer(),this.gl.bindBuffer(this.gl.ARRAY_BUFFER,this.verticesBuffer),this.gl.bufferData(this.gl.ARRAY_BUFFER,new Float32Array(t),this.gl.STATIC_DRAW),this.indicesBuffer=this.gl.createBuffer(),this.gl.bindBuffer(this.gl.ELEMENT_ARRAY_BUFFER,this.indicesBuffer),this.gl.bufferData(this.gl.ELEMENT_ARRAY_BUFFER,new Uint8Array(e),this.gl.STATIC_DRAW),this.indicesNumber=e.length}#r(){this.texture=this.gl.createTexture(),this.gl.bindTexture(this.gl.TEXTURE_2D,this.texture),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_WRAP_S,this.gl.CLAMP_TO_EDGE),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_WRAP_T,this.gl.CLAMP_TO_EDGE),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_MAG_FILTER,this.gl.NEAREST),this.gl.texParameteri(this.gl.TEXTURE_2D,this.gl.TEXTURE_MIN_FILTER,this.gl.NEAREST),this.gl.texImage2D(this.gl.TEXTURE_2D,0,this.gl.RGBA,this.framebufferWidth,this.framebufferHeight,0,this.gl.RGBA,this.gl.FLOAT,null),this.gl.bindTexture(this.gl.TEXTURE_2D,null)}#s(){this.framebuffer=this.gl.createFramebuffer(),this.gl.bindFramebuffer(this.gl.FRAMEBUFFER,this.framebuffer),this.gl.framebufferTexture2D(this.gl.FRAMEBUFFER,this.gl.COLOR_ATTACHMENT0,this.gl.TEXTURE_2D,this.texture,0),this.gl.bindFramebuffer(this.gl.FRAMEBUFFER,null)}}class l{constructor(t){this.gl=t,this.#t(),this.#e(),this.#i()}delete(){this.gl.deleteBuffer(this.verticesBuffer)}draw(t,e,i){this.gl.bindFramebuffer(this.gl.FRAMEBUFFER,null),this.gl.viewport(0,0,e.width,e.height),this.gl.enable(this.gl.DEPTH_TEST),this.gl.enable(this.gl.BLEND),this.gl.blendFunc(this.gl.SRC_ALPHA,this.gl.ONE_MINUS_SRC_ALPHA),this.gl.useProgram(this.program),this.gl.bindBuffer(this.gl.ARRAY_BUFFER,this.verticesBuffer),this.gl.enableVertexAttribArray(this.aPosition),this.gl.vertexAttribPointer(this.aPosition,2,this.gl.FLOAT,!1,0,0),this.gl.activeTexture(this.gl.TEXTURE0),this.gl.bindTexture(this.gl.TEXTURE_2D,i),this.gl.uniform1i(this.uROITexture,0),this.gl.uniform2f(this.uScreenSize,e.width,e.height),this.gl.uniformMatrix4fv(this.uMvpMatrix,!1,t),this.gl.drawArrays(this.gl.TRIANGLE_STRIP,0,this.verticesNumber)}#t(){const t=i(928),r=i(825),h=e(this.gl,t),a=s(this.gl,r);this.program=n(this.gl,h,a)}#e(){this.aPosition=this.gl.getAttribLocation(this.program,"a_Position"),this.uMvpMatrix=this.gl.getUniformLocation(this.program,"u_MvpMatrix"),this.uROITexture=this.gl.getUniformLocation(this.program,"u_ROITexture"),this.uScreenSize=this.gl.getUniformLocation(this.program,"u_ScreenSize")}#i(){this.verticesBuffer=this.gl.createBuffer(),this.gl.bindBuffer(this.gl.ARRAY_BUFFER,this.verticesBuffer),this.gl.bufferData(this.gl.ARRAY_BUFFER,new Float32Array([1,1,-1,1,1,-1,-1,-1]),this.gl.STATIC_DRAW),this.verticesNumber=4}}class g{constructor(t){this.options=t}init(t,e){if(this.canvas=e,!t.getExtension("OES_texture_float")||!t.getExtension("WEBGL_color_buffer_float")||!t.getExtension("EXT_float_blend"))throw"WebGL extension not supported";this.#n(),this.#h(),this.idw=new a(t,this.framebufferWidth,this.framebufferHeight,this.points,this.pointsDistance,this.options),this.roi=new f(t,this.framebufferWidth,this.framebufferHeight,this.points,this.pointsDistance,this.average,this.options),this.draw=new l(t)}resizeFramebuffer(){this.#h(),this.idw.setFrameBufferSize(this.framebufferWidth,this.framebufferHeight),this.roi.setFrameBufferSize(this.framebufferWidth,this.framebufferHeight)}delete(){this.idw.delete(),this.roi.delete(),this.draw.delete()}preRender(t){this.idw.draw(t),this.roi.draw(t,this.idw.texture,this.canvas)}render(t){this.draw.draw(t,this.canvas,this.roi.texture)}updatePoints(t){this.options.points=t,this.#n(),this.idw.updatePointsAndDistances(this.points,this.pointsDistance),this.roi.updatePointsAndDistances(this.points,this.pointsDistance)}#n(){this.points=[],this.pointsDistance=[];let t=1/0,e=-1/0;this.options.points.forEach((i=>{const r=mapboxgl.MercatorCoordinate.fromLngLat(i);this.points.push([r.x,r.y,i.val]),this.pointsDistance.push(r.meterInMercatorCoordinateUnits()*this.options.pointRadius),i.val<t&&(t=i.val),i.val>e&&(e=i.val)})),t=t<this.options.minValue?t:this.options.minValue,e=e>this.options.maxValue?e:this.options.maxValue,this.average=0,this.points.forEach((i=>{i[2]=(i[2]-t)/(e-t),this.average+=i[2]})),this.average/=this.points.length}#h(){this.framebufferWidth=Math.ceil(this.canvas.width*this.options.framebufferFactor),this.framebufferHeight=Math.ceil(this.canvas.height*this.options.framebufferFactor)}}function x(t){const e={layerId:"",opacity:.5,minValue:1/0,maxValue:-1/0,p:3,framebufferFactor:.3,points:[],roi:[],averageThreshold:0,valueToColor:"\n            vec3 valueToColor(float value) {\n                return vec3(max((value-0.5)*2.0, 0.0), 1.0 - 2.0*abs(value - 0.5), max((0.5-value)*2.0, 0.0));\n            }\n        ",valueToColor4:"\n            vec4 valueToColor4(float value, float defaultOpacity) {\n                return vec4(valueToColor(value), defaultOpacity);\n            }\n        ",pointRadius:0,fasterPointRadius:!1};if("object"==typeof t)for(let i in t)e[i]=t[i];const i=new g(e);return{id:e.layerId,type:"custom",onAdd:function(t,e){i.init(e,t._canvas),this.resizeFramebuffer=()=>{i.resizeFramebuffer()},t.on("resize",this.resizeFramebuffer)},onRemove:function(t,e){i.delete(),t.off("resize",this.resizeFramebuffer)},prerender:function(t,e){i.preRender(e)},render:function(t,e){i.render(e)},updatePoints:function(t){i.updatePoints(t)}}}})(),r})()));