sigma/build/sigma.min.js

A JavaScript library aimed at visualizing graphs of thousands of nodes and edges.

var Sigma;(()=>{var t={796:t=>{t.exports=function(t,e){var r=e.length;if(0!==r){var i=t.length;t.length+=r;for(var n=0;n<r;n++)t[i+n]=e[n]}}},187:t=>{"use strict";var e,r="object"==typeof Reflect?Reflect:null,i=r&&"function"==typeof r.apply?r.apply:function(t,e,r){return Function.prototype.apply.call(t,e,r)};e=r&&"function"==typeof r.ownKeys?r.ownKeys:Object.getOwnPropertySymbols?function(t){return Object.getOwnPropertyNames(t).concat(Object.getOwnPropertySymbols(t))}:function(t){return Object.getOwnPropertyNames(t)};var n=Number.isNaN||function(t){return t!=t};function o(){o.init.call(this)}t.exports=o,t.exports.once=function(t,e){return new Promise((function(r,i){function n(r){t.removeListener(e,o),i(r)}function o(){"function"==typeof t.removeListener&&t.removeListener("error",n),r([].slice.call(arguments))}g(t,e,o,{once:!0}),"error"!==e&&function(t,e,r){"function"==typeof t.on&&g(t,"error",e,{once:!0})}(t,n)}))},o.EventEmitter=o,o.prototype._events=void 0,o.prototype._eventsCount=0,o.prototype._maxListeners=void 0;var a=10;function s(t){if("function"!=typeof t)throw new TypeError('The "listener" argument must be of type Function. 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Please read it to get better comments on what's\n  // happening:\n  float pixelsThickness = max(normalLength, minThickness * u_sqrtZoomRatio);\n  float webGLThickness = pixelsThickness * u_correctionRatio;\n  float adaptedWebGLThickness = webGLThickness * u_sqrtZoomRatio;\n  float adaptedWebGLNodeRadius = a_radius * 2.0 * u_correctionRatio * u_sqrtZoomRatio;\n  float adaptedWebGLArrowHeadLength = adaptedWebGLThickness * 2.0 * arrowHeadLengthThicknessRatio;\n  float adaptedWebGLArrowHeadHalfWidth = adaptedWebGLArrowHeadLength * arrowHeadWidthLengthRatio / 2.0;\n\n  float da = a_barycentric.x;\n  float db = a_barycentric.y;\n  float dc = a_barycentric.z;\n\n  vec2 delta = vec2(\n      da * (adaptedWebGLNodeRadius * unitNormal.y)\n    + db * ((adaptedWebGLNodeRadius + adaptedWebGLArrowHeadLength) * unitNormal.y + adaptedWebGLArrowHeadHalfWidth * unitNormal.x)\n    + dc * ((adaptedWebGLNodeRadius + adaptedWebGLArrowHeadLength) * unitNormal.y - adaptedWebGLArrowHeadHalfWidth * unitNormal.x),\n\n      da * (-adaptedWebGLNodeRadius * unitNormal.x)\n    + db * (-(adaptedWebGLNodeRadius + adaptedWebGLArrowHeadLength) * unitNormal.x + adaptedWebGLArrowHeadHalfWidth * unitNormal.y)\n    + dc * (-(adaptedWebGLNodeRadius + adaptedWebGLArrowHeadLength) * unitNormal.x - adaptedWebGLArrowHeadHalfWidth * unitNormal.y)\n  );\n\n  vec2 position = (u_matrix * vec3(a_position + delta, 1)).xy;\n\n  gl_Position = vec4(position, 0, 1);\n\n  // Extract the color:\n  v_color = a_color;\n  v_color.a *= bias;\n}\n"},620:(t,e,r)=>{"use strict";r.r(e),r.d(e,{default:()=>i});const i="attribute vec4 a_color;\nattribute vec2 a_normal;\nattribute vec2 a_position;\nattribute float a_radius;\n\nuniform mat3 u_matrix;\nuniform float u_sqrtZoomRatio;\nuniform float u_correctionRatio;\n\nvarying vec4 v_color;\nvarying vec2 v_normal;\nvarying float v_thickness;\n\nconst float minThickness = 1.7;\nconst float bias = 255.0 / 254.0;\nconst float arrowHeadLengthThicknessRatio = 2.5;\n\nvoid main() {\n  float normalLength = length(a_normal);\n  vec2 unitNormal = a_normal / normalLength;\n\n  // These first computations are taken from edge.vert.glsl. Please read it to\n  // get better comments on what's happening:\n  float pixelsThickness = max(normalLength, minThickness * u_sqrtZoomRatio);\n  float webGLThickness = pixelsThickness * u_correctionRatio;\n  float adaptedWebGLThickness = webGLThickness * u_sqrtZoomRatio;\n\n  // Here, we move the point to leave space for the arrow head:\n  float direction = sign(a_radius);\n  float adaptedWebGLNodeRadius = direction * a_radius * 2.0 * u_correctionRatio * u_sqrtZoomRatio;\n  float adaptedWebGLArrowHeadLength = adaptedWebGLThickness * 2.0 * arrowHeadLengthThicknessRatio;\n\n  vec2 compensationVector = vec2(-direction * unitNormal.y, direction * unitNormal.x) * (adaptedWebGLNodeRadius + adaptedWebGLArrowHeadLength);\n\n  // Here is the proper position of the vertex\n  gl_Position = vec4((u_matrix * vec3(a_position + unitNormal * adaptedWebGLThickness + compensationVector, 1)).xy, 0, 1);\n\n  v_thickness = webGLThickness / u_sqrtZoomRatio;\n\n  v_normal = unitNormal;\n  v_color = a_color;\n  v_color.a *= bias;\n}\n"},498:(t,e,r)=>{"use strict";r.r(e),r.d(e,{default:()=>i});const i="precision mediump float;\n\nvarying vec4 v_color;\nvarying vec2 v_normal;\nvarying float v_thickness;\n\nconst float feather = 0.001;\nconst vec4 transparent = vec4(0.0, 0.0, 0.0, 0.0);\n\nvoid main(void) {\n  float dist = length(v_normal) * v_thickness;\n\n  float t = smoothstep(\n    v_thickness - feather,\n    v_thickness,\n    dist\n  );\n\n  gl_FragColor = mix(v_color, transparent, t);\n}\n"},223:(t,e,r)=>{"use strict";r.r(e),r.d(e,{default:()=>i});const i='attribute vec4 a_color;\nattribute vec2 a_normal;\nattribute vec2 a_position;\n\nuniform mat3 u_matrix;\nuniform float u_sqrtZoomRatio;\nuniform float u_correctionRatio;\n\nvarying vec4 v_color;\nvarying vec2 v_normal;\nvarying float v_thickness;\n\nconst float minThickness = 1.7;\nconst float bias = 255.0 / 254.0;\n\nvoid main() {\n  float normalLength = length(a_normal);\n  vec2 unitNormal = a_normal / normalLength;\n\n  // We require edges to be at least `minThickness` pixels thick *on screen*\n  // (so we need to compensate the SQRT zoom ratio):\n  float pixelsThickness = max(normalLength, minThickness * u_sqrtZoomRatio);\n\n  // Then, we need to retrieve the normalized thickness of the edge in the WebGL\n  // referential (in a ([0, 1], [0, 1]) space), using our "magic" correction\n  // ratio:\n  float webGLThickness = pixelsThickness * u_correctionRatio;\n\n  // Finally, we adapt the edge thickness to the "SQRT rule" in sigma (so that\n  // items are not too big when zoomed in, and not too small when zoomed out).\n  // The exact computation should be `adapted = value * zoom / sqrt(zoom)`, but\n  // it\'s simpler like this:\n  float adaptedWebGLThickness = webGLThickness * u_sqrtZoomRatio;\n\n  // Here is the proper position of the vertex\n  gl_Position = vec4((u_matrix * vec3(a_position + unitNormal * adaptedWebGLThickness, 1)).xy, 0, 1);\n\n  // For the fragment shader though, we need a thickness that takes the "magic"\n  // correction ratio into account (as in webGLThickness), but so that the\n  // antialiasing effect does not depend on the zoom level. So here\'s yet\n  // another thickness version:\n  v_thickness = webGLThickness / u_sqrtZoomRatio;\n\n  v_normal = unitNormal;\n  v_color = a_color;\n  v_color.a *= bias;\n}\n'},262:(t,e,r)=>{"use strict";r.r(e),r.d(e,{default:()=>i});const i="precision mediump float;\n\nvarying vec4 v_color;\nvarying float v_border;\n\nconst float radius = 0.5;\nconst vec4 transparent = vec4(0.0, 0.0, 0.0, 0.0);\n\nvoid main(void) {\n  vec2 m = gl_PointCoord - vec2(0.5, 0.5);\n  float dist = radius - length(m);\n\n  float t = 0.0;\n  if (dist > v_border)\n    t = 1.0;\n  else if (dist > 0.0)\n    t = dist / v_border;\n\n  gl_FragColor = mix(transparent, v_color, t);\n}\n"},106:(t,e,r)=>{"use strict";r.r(e),r.d(e,{default:()=>i});const i="attribute vec2 a_position;\nattribute float a_size;\nattribute vec4 a_color;\n\nuniform float u_ratio;\nuniform float u_scale;\nuniform mat3 u_matrix;\n\nvarying vec4 v_color;\nvarying float v_border;\n\nconst float bias = 255.0 / 254.0;\n\nvoid main() {\n  gl_Position = vec4(\n    (u_matrix * vec3(a_position, 1)).xy,\n    0,\n    1\n  );\n\n  // Multiply the point size twice:\n  //  - x SCALING_RATIO to correct the canvas scaling\n  //  - x 2 to correct the formulae\n  gl_PointSize = a_size * u_ratio * u_scale * 2.0;\n\n  v_border = (1.0 / u_ratio) * (0.5 / a_size);\n\n  // Extract the color:\n  v_color = a_color;\n  v_color.a *= bias;\n}\n"},764:function(t,e,r){"use strict";var i,n=this&&this.__extends||(i=function(t,e){return i=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var r in e)Object.prototype.hasOwnProperty.call(e,r)&&(t[r]=e[r])},i(t,e)},function(t,e){if("function"!=typeof e&&null!==e)throw new TypeError("Class extends value "+String(e)+" is not a constructor or null");function r(){this.constructor=t}i(t,e),t.prototype=null===e?Object.create(e):(r.prototype=e.prototype,new r)}),o=this&&this.__importDefault||function(t){return 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t=this.gl;t.enableVertexAttribArray(this.positionLocation),t.enableVertexAttribArray(this.sizeLocation),t.enableVertexAttribArray(this.colorLocation),t.vertexAttribPointer(this.positionLocation,2,t.FLOAT,!1,this.attributes*Float32Array.BYTES_PER_ELEMENT,0),t.vertexAttribPointer(this.sizeLocation,1,t.FLOAT,!1,this.attributes*Float32Array.BYTES_PER_ELEMENT,8),t.vertexAttribPointer(this.colorLocation,4,t.UNSIGNED_BYTE,!0,this.attributes*Float32Array.BYTES_PER_ELEMENT,12)},e}(r(171).AbstractProgram);e.AbstractNodeProgram=o,e.createNodeCompoundProgram=function(t){return function(){function e(e,r){this.programs=t.map((function(t){return new t(e,r)}))}return e.prototype.bufferData=function(){this.programs.forEach((function(t){return t.bufferData()}))},e.prototype.allocate=function(t){this.programs.forEach((function(e){return 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t=this.gl;t.bufferData(t.ARRAY_BUFFER,this.array,t.DYNAMIC_DRAW)},t.prototype.allocate=function(t){this.array=new Float32Array(this.points*this.attributes*t)},t.prototype.hasNothingToRender=function(){return 0===this.array.length},t}();e.AbstractProgram=n},569:function(t,e,r){"use strict";var i=this&&this.__importDefault||function(t){return t&&t.__esModule?t:{default:t}};Object.defineProperty(e,"__esModule",{value:!0});var n=r(195),o=i(r(805)),a=i(r(483)),s=(0,n.createEdgeCompoundProgram)([a.default,o.default]);e.default=s},805:function(t,e,r){"use strict";var i,n=this&&this.__extends||(i=function(t,e){return i=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var r in e)Object.prototype.hasOwnProperty.call(e,r)&&(t[r]=e[r])},i(t,e)},function(t,e){if("function"!=typeof e&&null!==e)throw new TypeError("Class extends value "+String(e)+" is not a constructor or null");function 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o=e.getUniformLocation(r.program,"u_correctionRatio");if(null===o)throw new Error("EdgeArrowHeadProgram: error while getting correctionRatioLocation");return r.correctionRatioLocation=o,r.bind(),r}return n(e,t),e.prototype.bind=function(){var t=this.gl;t.enableVertexAttribArray(this.positionLocation),t.enableVertexAttribArray(this.normalLocation),t.enableVertexAttribArray(this.radiusLocation),t.enableVertexAttribArray(this.colorLocation),t.enableVertexAttribArray(this.barycentricLocation),t.vertexAttribPointer(this.positionLocation,2,t.FLOAT,!1,9*Float32Array.BYTES_PER_ELEMENT,0),t.vertexAttribPointer(this.normalLocation,2,t.FLOAT,!1,9*Float32Array.BYTES_PER_ELEMENT,8),t.vertexAttribPointer(this.radiusLocation,1,t.FLOAT,!1,9*Float32Array.BYTES_PER_ELEMENT,16),t.vertexAttribPointer(this.colorLocation,4,t.UNSIGNED_BYTE,!0,9*Float32Array.BYTES_PER_ELEMENT,20),t.vertexAttribPointer(this.barycentricLocation,3,t.FLOAT,!1,9*Float32Array.BYTES_PER_ELEMENT,24)},e.prototype.computeIndices=function(){},e.prototype.process=function(t,e,r,i,n){if(i)for(var o=27*n,s=o+27;o<s;o++)this.array[o]=0;else{var h=r.size||1,l=e.size||1,c=t.x,u=t.y,d=e.x,f=e.y,p=(0,a.floatColor)(r.color),g=d-c,v=f-u,m=g*g+v*v,y=0,b=0;m&&(y=-v*(m=1/Math.sqrt(m))*h,b=g*m*h);var _=27*n,x=this.array;x[_++]=d,x[_++]=f,x[_++]=-y,x[_++]=-b,x[_++]=l,x[_++]=p,x[_++]=1,x[_++]=0,x[_++]=0,x[_++]=d,x[_++]=f,x[_++]=-y,x[_++]=-b,x[_++]=l,x[_++]=p,x[_++]=0,x[_++]=1,x[_++]=0,x[_++]=d,x[_++]=f,x[_++]=-y,x[_++]=-b,x[_++]=l,x[_++]=p,x[_++]=0,x[_++]=0,x[_]=1}},e.prototype.render=function(t){if(!this.hasNothingToRender()){var e=this.gl,r=this.program;e.useProgram(r),e.uniformMatrix3fv(this.matrixLocation,!1,t.matrix),e.uniform1f(this.sqrtZoomRatioLocation,Math.sqrt(t.ratio)),e.uniform1f(this.correctionRatioLocation,t.correctionRatio),e.drawArrays(e.TRIANGLES,0,this.array.length/9)}},e}(r(195).AbstractEdgeProgram);e.default=l},483:function(t,e,r){"use strict";var i,n=this&&this.__extends||(i=function(t,e){return i=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var r in 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Error("EdgeClampedProgram: error while getting matrixLocation");r.matrixLocation=n;var o=e.getUniformLocation(r.program,"u_sqrtZoomRatio");if(null===o)throw new Error("EdgeClampedProgram: error while getting cameraRatioLocation");r.sqrtZoomRatioLocation=o;var a=e.getUniformLocation(r.program,"u_correctionRatio");if(null===a)throw new Error("EdgeClampedProgram: error while getting viewportRatioLocation");return r.correctionRatioLocation=a,r.canUse32BitsIndices=(0,s.canUse32BitsIndices)(e),r.IndicesArray=r.canUse32BitsIndices?Uint32Array:Uint16Array,r.indicesArray=new r.IndicesArray,r.indicesType=r.canUse32BitsIndices?e.UNSIGNED_INT:e.UNSIGNED_SHORT,r.bind(),r}return n(e,t),e.prototype.bind=function(){var t=this.gl;t.bindBuffer(t.ELEMENT_ARRAY_BUFFER,this.indicesBuffer),t.enableVertexAttribArray(this.positionLocation),t.enableVertexAttribArray(this.normalLocation),t.enableVertexAttribArray(this.colorLocation),t.enableVertexAttribArray(this.radiusLocation),t.vertexAttribPointer(this.positionLocation,2,t.FLOAT,!1,6*Float32Array.BYTES_PER_ELEMENT,0),t.vertexAttribPointer(this.normalLocation,2,t.FLOAT,!1,6*Float32Array.BYTES_PER_ELEMENT,8),t.vertexAttribPointer(this.colorL