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* Minified by jsDelivr using Terser v5.39.0.\n * Original file: /npm/gl-axes3d@1.7.1/axes.js\n *\n * Do NOT use SRI with dynamically generated files! More information: https://www.jsdelivr.com/using-sri-with-dynamic-files\n */\n","'use strict'\n\nmodule.exports = createAxes\n\nvar createText = require('./lib/text.js')\nvar createLines = require('./lib/lines.js')\nvar createBackground = require('./lib/background.js')\nvar getCubeProperties = require('./lib/cube.js')\nvar Ticks = require('./lib/ticks.js')\n\nvar identity = new Float32Array([\n 1, 0, 0, 0,\n 0, 1, 0, 0,\n 0, 0, 1, 0,\n 0, 0, 0, 1])\n\nvar ab = ArrayBuffer\nvar dv = DataView\n\nfunction isTypedArray(a) {\n return ab.isView(a) && !(a instanceof dv)\n}\n\nfunction isArrayOrTypedArray(a) {\n return Array.isArray(a) || isTypedArray(a)\n}\n\nfunction copyVec3(a, b) {\n a[0] = b[0]\n a[1] = b[1]\n a[2] = b[2]\n return a\n}\n\nfunction Axes(gl) {\n this.gl = gl\n\n this.pixelRatio = 1\n\n this.bounds = [ [-10, -10, -10],\n [ 10, 10, 10] ]\n this.ticks = [ [], [], [] ]\n this.autoTicks = true\n this.tickSpacing = [ 1, 1, 1 ]\n\n this.tickEnable = [ true, true, true ]\n this.tickFont = [ 'sans-serif', 'sans-serif', 'sans-serif' ]\n this.tickFontStyle = [ 'normal', 'normal', 'normal' ]\n this.tickFontWeight = [ 'normal', 'normal', 'normal' ]\n this.tickFontVariant = [ 'normal', 'normal', 'normal' ]\n this.tickSize = [ 12, 12, 12 ]\n this.tickAngle = [ 0, 0, 0 ]\n this.tickAlign = [ 'auto', 'auto', 'auto' ]\n this.tickColor = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]\n this.tickPad = [ 10, 10, 10 ]\n\n this.lastCubeProps = {\n cubeEdges: [0,0,0],\n axis: [0,0,0]\n }\n\n this.labels = [ 'x', 'y', 'z' ]\n this.labelEnable = [ true, true, true ]\n this.labelFont = [ 'sans-serif', 'sans-serif', 'sans-serif' ]\n this.labelFontStyle = [ 'normal', 'normal', 'normal' ]\n this.labelFontWeight = [ 'normal', 'normal', 'normal' ]\n this.labelFontVariant = [ 'normal', 'normal', 'normal' ]\n this.labelSize = [ 20, 20, 20 ]\n this.labelAngle = [ 0, 0, 0 ]\n this.labelAlign = [ 'auto', 'auto', 'auto' ]\n this.labelColor = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]\n this.labelPad = [ 10, 10, 10 ]\n\n this.lineEnable = [ true, true, true ]\n this.lineMirror = [ false, false, false ]\n this.lineWidth = [ 1, 1, 1 ]\n this.lineColor = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]\n\n this.lineTickEnable = [ true, true, true ]\n this.lineTickMirror = [ false, false, false ]\n this.lineTickLength = [ 0, 0, 0 ]\n this.lineTickWidth = [ 1, 1, 1 ]\n this.lineTickColor = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]\n\n this.gridEnable = [ true, true, true ]\n this.gridWidth = [ 1, 1, 1 ]\n this.gridColor = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]\n\n this.zeroEnable = [ true, true, true ]\n this.zeroLineColor = [ [0,0,0,1], [0,0,0,1], [0,0,0,1] ]\n this.zeroLineWidth = [ 2, 2, 2 ]\n\n this.backgroundEnable = [ false, false, false ]\n this.backgroundColor = [ [0.8, 0.8, 0.8, 0.5],\n [0.8, 0.8, 0.8, 0.5],\n [0.8, 0.8, 0.8, 0.5] ]\n\n this._firstInit = true\n this._text = null\n this._lines = null\n this._background = createBackground(gl)\n}\n\nvar proto = Axes.prototype\n\nproto.update = function(options) {\n options = options || {}\n\n //Option parsing helper functions\n function parseOption(nest, cons, name) {\n if(name in options) {\n var opt = options[name]\n var prev = this[name]\n var next\n if(nest ? (isArrayOrTypedArray(opt) && isArrayOrTypedArray(opt[0])) :\n isArrayOrTypedArray(opt) ) {\n this[name] = next = [ cons(opt[0]), cons(opt[1]), cons(opt[2]) ]\n } else {\n this[name] = next = [ cons(opt), cons(opt), cons(opt) ]\n }\n for(var i=0; i<3; ++i) {\n if(next[i] !== prev[i]) {\n return true\n }\n }\n }\n return false\n }\n\n var NUMBER = parseOption.bind(this, false, Number)\n var BOOLEAN = parseOption.bind(this, false, Boolean)\n var STRING = parseOption.bind(this, false, String)\n var COLOR = parseOption.bind(this, true, function(v) {\n if(isArrayOrTypedArray(v)) {\n if(v.length === 3) {\n return [ +v[0], +v[1], +v[2], 1.0 ]\n } else if(v.length === 4) {\n return [ +v[0], +v[1], +v[2], +v[3] ]\n }\n }\n return [ 0, 0, 0, 1 ]\n })\n\n //Tick marks and bounds\n var nextTicks\n var ticksUpdate = false\n var boundsChanged = false\n if('bounds' in options) {\n var bounds = options.bounds\ni_loop:\n for(var i=0; i<2; ++i) {\n for(var j=0; j<3; ++j) {\n if(bounds[i][j] !== this.bounds[i][j]) {\n boundsChanged = true\n }\n this.bounds[i][j] = bounds[i][j]\n }\n }\n }\n if('ticks' in options) {\n nextTicks = options.ticks\n ticksUpdate = true\n this.autoTicks = false\n for(var i=0; i<3; ++i) {\n this.tickSpacing[i] = 0.0\n }\n } else if(NUMBER('tickSpacing')) {\n this.autoTicks = true\n boundsChanged = true\n }\n\n if(this._firstInit) {\n if(!('ticks' in options || 'tickSpacing' in options)) {\n this.autoTicks = true\n }\n\n //Force tick recomputation on first update\n boundsChanged = true\n ticksUpdate = true\n this._firstInit = false\n }\n\n if(boundsChanged && this.autoTicks) {\n nextTicks = Ticks.create(this.bounds, this.tickSpacing)\n ticksUpdate = true\n }\n\n //Compare next ticks to previous ticks, only update if needed\n if(ticksUpdate) {\n for(var i=0; i<3; ++i) {\n nextTicks[i].sort(function(a,b) {\n return a.x-b.x\n })\n }\n if(Ticks.equal(nextTicks, this.ticks)) {\n ticksUpdate = false\n } else {\n this.ticks = nextTicks\n }\n }\n\n //Parse tick properties\n BOOLEAN('tickEnable')\n\n //If font changes, must rebuild vbo\n if(STRING('tickFont')) ticksUpdate = true\n if(STRING('tickFontStyle')) ticksUpdate = true\n if(STRING('tickFontWeight')) ticksUpdate = true\n if(STRING('tickFontVariant')) ticksUpdate = true\n\n NUMBER('tickSize')\n NUMBER('tickAngle')\n NUMBER('tickPad')\n COLOR('tickColor')\n\n //Axis labels\n var labelUpdate = STRING('labels')\n\n if(STRING('labelFont')) labelUpdate = true\n if(STRING('labelFontStyle')) labelUpdate = true\n if(STRING('labelFontWeight')) labelUpdate = true\n if(STRING('labelFontVariant')) labelUpdate = true\n\n BOOLEAN('labelEnable')\n NUMBER('labelSize')\n NUMBER('labelPad')\n COLOR('labelColor')\n\n //Axis lines\n BOOLEAN('lineEnable')\n BOOLEAN('lineMirror')\n NUMBER('lineWidth')\n COLOR('lineColor')\n\n //Axis line ticks\n BOOLEAN('lineTickEnable')\n BOOLEAN('lineTickMirror')\n NUMBER('lineTickLength')\n NUMBER('lineTickWidth')\n COLOR('lineTickColor')\n\n //Grid lines\n BOOLEAN('gridEnable')\n NUMBER('gridWidth')\n COLOR('gridColor')\n\n //Zero line\n BOOLEAN('zeroEnable')\n COLOR('zeroLineColor')\n NUMBER('zeroLineWidth')\n\n //Background\n BOOLEAN('backgroundEnable')\n COLOR('backgroundColor')\n\n var labelFontOpts = [\n {\n family: this.labelFont[0],\n style: this.labelFontStyle[0],\n weight: this.labelFontWeight[0],\n variant: this.labelFontVariant[0],\n },\n {\n family: this.labelFont[1],\n style: this.labelFontStyle[1],\n weight: this.labelFontWeight[1],\n variant: this.labelFontVariant[1],\n },\n {\n family: this.labelFont[2],\n style: this.labelFontStyle[2],\n weight: this.labelFontWeight[2],\n variant: this.labelFontVariant[2],\n }\n ]\n\n var tickFontOpts = [\n {\n family: this.tickFont[0],\n style: this.tickFontStyle[0],\n weight: this.tickFontWeight[0],\n variant: this.tickFontVariant[0],\n },\n {\n family: this.tickFont[1],\n style: this.tickFontStyle[1],\n weight: this.tickFontWeight[1],\n variant: this.tickFontVariant[1],\n },\n {\n family: this.tickFont[2],\n style: this.tickFontStyle[2],\n weight: this.tickFontWeight[2],\n variant: this.tickFontVariant[2],\n }\n ]\n\n //Update text if necessary\n if(!this._text) {\n this._text = createText(\n this.gl,\n this.bounds,\n this.labels,\n labelFontOpts,\n this.ticks,\n tickFontOpts)\n } else if(this._text && (labelUpdate || ticksUpdate)) {\n this._text.update(\n this.bounds,\n this.labels,\n labelFontOpts,\n this.ticks,\n tickFontOpts)\n }\n\n //Update lines if necessary\n if(this._lines && ticksUpdate) {\n this._lines.dispose()\n this._lines = null\n }\n if(!this._lines) {\n this._lines = createLines(this.gl, this.bounds, this.ticks)\n }\n}\n\nfunction OffsetInfo() {\n this.primalOffset = [0,0,0]\n this.primalMinor = [0,0,0]\n this.mirrorOffset = [0,0,0]\n this.mirrorMinor = [0,0,0]\n}\n\nvar LINE_OFFSET = [ new OffsetInfo(), new OffsetInfo(), new OffsetInfo() ]\n\nfunction computeLineOffset(result, i, bounds, cubeEdges, cubeAxis) {\n var primalOffset = result.primalOffset\n var primalMinor = result.primalMinor\n var dualOffset = result.mirrorOffset\n var dualMinor = result.mirrorMinor\n var e = cubeEdges[i]\n\n //Calculate offsets\n for(var j=0; j<3; ++j) {\n if(i === j) {\n continue\n }\n var a = primalOffset,\n b = dualOffset,\n c = primalMinor,\n d = dualMinor\n if(e & (1< 0) {\n c[j] = -1\n d[j] = 0\n } else {\n c[j] = 0\n d[j] = +1\n }\n }\n}\n\nvar CUBE_ENABLE = [0,0,0]\nvar DEFAULT_PARAMS = {\n model: identity,\n view: identity,\n projection: identity,\n _ortho: false\n}\n\nproto.isOpaque = function() {\n return true\n}\n\nproto.isTransparent = function() {\n return false\n}\n\nproto.drawTransparent = function(params) {}\n\nvar ALIGN_OPTION_AUTO = 0 // i.e. as defined in the shader the text would rotate to stay upwards range: [-90,90]\n\nvar PRIMAL_MINOR = [0,0,0]\nvar MIRROR_MINOR = [0,0,0]\nvar PRIMAL_OFFSET = [0,0,0]\n\nproto.draw = function(params) {\n params = params || DEFAULT_PARAMS\n\n var gl = this.gl\n\n //Geometry for camera and axes\n var model = params.model || identity\n var view = params.view || identity\n var projection = params.projection || identity\n var bounds = this.bounds\n var isOrtho = params._ortho || false\n\n //Unpack axis info\n var cubeParams = getCubeProperties(model, view, projection, bounds, isOrtho)\n var cubeEdges = cubeParams.cubeEdges\n var cubeAxis = cubeParams.axis\n\n var cx = view[12]\n var cy = view[13]\n var cz = view[14]\n var cw = view[15]\n\n var orthoFix = (isOrtho) ? 2 : 1 // double up padding for orthographic ticks & labels\n var pixelScaleF = orthoFix * this.pixelRatio * (projection[3]*cx + projection[7]*cy + projection[11]*cz + projection[15]*cw) / gl.drawingBufferHeight\n\n for(var i=0; i<3; ++i) {\n this.lastCubeProps.cubeEdges[i] = cubeEdges[i]\n this.lastCubeProps.axis[i] = cubeAxis[i]\n }\n\n //Compute axis info\n var lineOffset = LINE_OFFSET\n for(var i=0; i<3; ++i) {\n computeLineOffset(\n LINE_OFFSET[i],\n i,\n this.bounds,\n cubeEdges,\n cubeAxis)\n }\n\n //Set up state parameters\n var gl = this.gl\n\n //Draw background first\n var cubeEnable = CUBE_ENABLE\n for(var i=0; i<3; ++i) {\n if(this.backgroundEnable[i]) {\n cubeEnable[i] = cubeAxis[i]\n } else {\n cubeEnable[i] = 0\n }\n }\n\n this._background.draw(\n model,\n view,\n projection,\n bounds,\n cubeEnable,\n this.backgroundColor)\n\n //Draw lines\n this._lines.bind(\n model,\n view,\n projection,\n this)\n\n //First draw grid lines and zero lines\n for(var i=0; i<3; ++i) {\n var x = [0,0,0]\n if(cubeAxis[i] > 0) {\n x[i] = bounds[1][i]\n } else {\n x[i] = bounds[0][i]\n }\n\n //Draw grid lines\n for(var j=0; j<2; ++j) {\n var u = (i + 1 + j) % 3\n var v = (i + 1 + (j^1)) % 3\n if(this.gridEnable[u]) {\n this._lines.drawGrid(u, v, this.bounds, x, this.gridColor[u], this.gridWidth[u]*this.pixelRatio)\n }\n }\n\n //Draw zero lines (need to do this AFTER all grid lines are drawn)\n for(var j=0; j<2; ++j) {\n var u = (i + 1 + j) % 3\n var v = (i + 1 + (j^1)) % 3\n if(this.zeroEnable[v]) {\n //Check if zero line in bounds\n if(Math.min(bounds[0][v], bounds[1][v]) <= 0 && Math.max(bounds[0][v], bounds[1][v]) >= 0) {\n this._lines.drawZero(u, v, this.bounds, x, this.zeroLineColor[v], this.zeroLineWidth[v]*this.pixelRatio)\n }\n }\n }\n }\n\n //Then draw axis lines and tick marks\n for(var i=0; i<3; ++i) {\n\n //Draw axis lines\n if(this.lineEnable[i]) {\n this._lines.drawAxisLine(i, this.bounds, lineOffset[i].primalOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)\n }\n if(this.lineMirror[i]) {\n this._lines.drawAxisLine(i, this.bounds, lineOffset[i].mirrorOffset, this.lineColor[i], this.lineWidth[i]*this.pixelRatio)\n }\n\n //Compute minor axes\n var primalMinor = copyVec3(PRIMAL_MINOR, lineOffset[i].primalMinor)\n var mirrorMinor = copyVec3(MIRROR_MINOR, lineOffset[i].mirrorMinor)\n var tickLength = this.lineTickLength\n for(var j=0; j<3; ++j) {\n var scaleFactor = pixelScaleF / model[5*j]\n primalMinor[j] *= tickLength[j] * scaleFactor\n mirrorMinor[j] *= tickLength[j] * scaleFactor\n }\n\n\n\n //Draw axis line ticks\n if(this.lineTickEnable[i]) {\n this._lines.drawAxisTicks(i, lineOffset[i].primalOffset, primalMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)\n }\n if(this.lineTickMirror[i]) {\n this._lines.drawAxisTicks(i, lineOffset[i].mirrorOffset, mirrorMinor, this.lineTickColor[i], this.lineTickWidth[i]*this.pixelRatio)\n }\n }\n this._lines.unbind()\n\n //Draw text sprites\n this._text.bind(\n model,\n view,\n projection,\n this.pixelRatio)\n\n var alignOpt // options in shader are from this list {-1, 0, 1, 2, 3, ..., n}\n // -1: backward compatible\n // 0: raw data\n // 1: auto align, free angles\n // 2: auto align, horizontal or vertical\n //3-n: auto align, round to n directions e.g. 12 -> round to angles with 30-degree steps\n\n var hv_ratio = 0.5 // can have an effect on the ratio between horizontals and verticals when using option 2\n\n var enableAlign\n var alignDir\n\n function alignTo(i) {\n alignDir = [0,0,0]\n alignDir[i] = 1\n }\n\n function solveTickAlignments(i, minor, major) {\n\n var i1 = (i + 1) % 3\n var i2 = (i + 2) % 3\n\n var A = minor[i1]\n var B = minor[i2]\n var C = major[i1]\n var D = major[i2]\n\n if ((A > 0) && (D > 0)) { alignTo(i1); return; }\n else if ((A > 0) && (D < 0)) { alignTo(i1); return; }\n else if ((A < 0) && (D > 0)) { alignTo(i1); return; }\n else if ((A < 0) && (D < 0)) { alignTo(i1); return; }\n else if ((B > 0) && (C > 0)) { alignTo(i2); return; }\n else if ((B > 0) && (C < 0)) { alignTo(i2); return; }\n else if ((B < 0) && (C > 0)) { alignTo(i2); return; }\n else if ((B < 0) && (C < 0)) { alignTo(i2); return; }\n }\n\n for(var i=0; i<3; ++i) {\n\n var minor = lineOffset[i].primalMinor\n var major = lineOffset[i].mirrorMinor\n\n var offset = copyVec3(PRIMAL_OFFSET, lineOffset[i].primalOffset)\n\n for(var j=0; j<3; ++j) {\n if(this.lineTickEnable[i]) {\n offset[j] += pixelScaleF * minor[j] * Math.max(this.lineTickLength[j], 0) / model[5*j]\n }\n }\n\n var axis = [0,0,0]\n axis[i] = 1\n\n //Draw tick text\n if(this.tickEnable[i]) {\n\n if(this.tickAngle[i] === -3600) {\n this.tickAngle[i] = 0\n this.tickAlign[i] = 'auto'\n } else {\n this.tickAlign[i] = -1\n }\n\n enableAlign = 1;\n\n alignOpt = [this.tickAlign[i], hv_ratio, enableAlign]\n if(alignOpt[0] === 'auto') alignOpt[0] = ALIGN_OPTION_AUTO\n else alignOpt[0] = parseInt('' + alignOpt[0])\n\n alignDir = [0,0,0]\n solveTickAlignments(i, minor, major)\n\n //Add tick padding\n for(var j=0; j<3; ++j) {\n offset[j] += pixelScaleF * minor[j] * this.tickPad[j] / model[5*j]\n }\n\n //Draw axis\n this._text.drawTicks(\n i,\n this.tickSize[i],\n this.tickAngle[i],\n offset,\n this.tickColor[i],\n axis,\n alignDir,\n alignOpt)\n }\n\n //Draw labels\n if(this.labelEnable[i]) {\n\n enableAlign = 0\n alignDir = [0,0,0]\n if(this.labels[i].length > 4) { // for large label axis enable alignDir to axis\n alignTo(i)\n enableAlign = 1\n }\n\n alignOpt = [this.labelAlign[i], hv_ratio, enableAlign]\n if(alignOpt[0] === 'auto') alignOpt[0] = ALIGN_OPTION_AUTO\n else alignOpt[0] = parseInt('' + alignOpt[0])\n\n //Add label padding\n for(var j=0; j<3; ++j) {\n offset[j] += pixelScaleF * minor[j] * this.labelPad[j] / model[5*j]\n }\n offset[i] += 0.5 * (bounds[0][i] + bounds[1][i])\n\n //Draw axis\n this._text.drawLabel(\n i,\n this.labelSize[i],\n this.labelAngle[i],\n offset,\n this.labelColor[i],\n [0,0,0],\n alignDir,\n alignOpt)\n }\n }\n\n this._text.unbind()\n}\n\nproto.dispose = function() {\n this._text.dispose()\n this._lines.dispose()\n this._background.dispose()\n this._lines = null\n this._text = null\n this._background = null\n this.gl = null\n}\n\nfunction createAxes(gl, options) {\n var axes = new Axes(gl)\n axes.update(options)\n return axes\n}\n"]}