Created by Christopher Manning
- Make all generated codes scannable.
Created by Christopher Manning
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html;charset=utf-8"> | |
| <title>Simplex Noise QR Code</title> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/dat-gui/0.5/dat.gui.min.js"></script> | |
| <script src="http://bl.ocks.org/d/4289018/simplex-noise.min.js"></script> | |
| <script src="qrcode.js"></script> | |
| <style type="text/css"> | |
| body { | |
| display: block; | |
| margin: 0; | |
| background-color: #FFF; | |
| } | |
| text{ | |
| font-family:monospace; | |
| font-size: 1.5em; | |
| text-anchor: middle; | |
| } | |
| rect{ | |
| } | |
| </style> | |
| </head> | |
| <body></body> | |
| <script type="text/javascript"> | |
| var width = window.innerWidth, | |
| height = window.innerHeight | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .attr("width", width) | |
| .attr("height", height) | |
| var config = { "version": 3, "grayscale": false, "x": 1, "y": 1, "size": 10, "velocity": 75, "margin": 100}; | |
| var gui = new dat.GUI(); | |
| //gui.close() | |
| gui.add(config, "grayscale").listen(); | |
| gui.add(config, "version", 1, 10).step(1).listen(); | |
| gui.add(config, "x", 1, 50).listen(); | |
| gui.add(config, "y", 1, 50).listen(); | |
| gui.add(config, "size", 1, 50).listen(); | |
| gui.add(config, "velocity", 1, 100).listen(); | |
| gui.add(config, "margin", 0, height/2).listen(); | |
| config.random = function(){ | |
| gui.__controllers.forEach(function(c){ | |
| if(c.property!="random" && c.property!="margin" && c.property!="size"){ | |
| c.setValue(Math.random()*c.__max) | |
| } | |
| }) | |
| } | |
| gui.add(config, "random") | |
| noiseOpacity = d3.scale.linear().domain([1,-1]).range([0,1]) | |
| simplex = new SimplexNoise(); | |
| p = function(i) { return (i*config["size"])+config["margin"] } | |
| moduleCount = function(version) { return 17 + (version * 4) } | |
| data = [] | |
| d3.timer(function(t){ | |
| if(config["velocity"] == 0) return | |
| dataModules = Math.sqrt(data.length) | |
| versionModules = moduleCount(config["version"]) | |
| if(dataModules != versionModules) { | |
| if(dataModules < versionModules) { | |
| d3.range(dataModules, versionModules).forEach(function(i) { | |
| d3.range(0, i).forEach(function(x) { | |
| data.push({x: x, y: i, noise: null}) | |
| }) | |
| d3.range(0, i+1).forEach(function(y) { | |
| data.push({x: i, y: y, noise: null}) | |
| }) | |
| }) | |
| } else if (versionModules < dataModules) { | |
| data.length = Math.pow(config["version"], 2) | |
| } | |
| var qr = new QRCode(config["version"], QRErrorCorrectLevel.L) | |
| qr.moduleCount = moduleCount(qr.typeNumber) | |
| qr.modules = new Array(qr.moduleCount) | |
| for (var row = 0; row < qr.moduleCount; row++) { | |
| qr.modules[row] = new Array(qr.moduleCount) | |
| for (var col = 0; col < qr.moduleCount; col++) { | |
| qr.modules[row][col] = null | |
| } | |
| } | |
| qr.setupPositionProbePattern(0, 0) | |
| qr.setupPositionProbePattern(qr.moduleCount - 7, 0) | |
| qr.setupPositionProbePattern(0, qr.moduleCount - 7) | |
| qr.setupPositionAdjustPattern() | |
| qr.setupTimingPattern() | |
| qr.setupTypeInfo(false, 0) | |
| if (qr.typeNumber >= 7) { | |
| qr.setupTypeNumber(false) | |
| } | |
| requiredPatterns = {} | |
| for (x = 0; x < versionModules; x++) { | |
| for (y = 0; y < versionModules; y++) { | |
| module = qr.modules[y][x] | |
| if(module != null) { | |
| requiredPatterns[x.toString() + "," + y.toString()] = module ? 1 : -1 | |
| } | |
| } | |
| } | |
| square = svg.selectAll("rect") | |
| .data(data) | |
| square.enter() | |
| .append("rect") | |
| square.exit().remove() | |
| } | |
| data.map(function(d){ | |
| if(typeof(i = requiredPatterns[d.x.toString()+","+d.y.toString()]) == "undefined") { | |
| d.noise = simplex.noise3D(d.x/(config["x"]), d.y/(config["y"]), t/((99-config["velocity"])*1000)) | |
| } else { | |
| d.noise = i | |
| } | |
| }) | |
| square | |
| .attr("fill", function(d) { return config["grayscale"] ? d3.hsl(0, 0, noiseOpacity(d.noise)) : (d.noise > 0 ? "#000" : "#FFF") }) | |
| .attr("width", function(d) { return config["size"] }) | |
| .attr("height", function(d) { return config["size"] }) | |
| .attr("x", function(d) { return p(d.x) }) | |
| .attr("y", function(d) { return p(d.y) }) | |
| }) | |
| </script> | |
| </html> |
| //--------------------------------------------------------------------- | |
| // QRCode for JavaScript | |
| // | |
| // Copyright (c) 2009 Kazuhiko Arase | |
| // | |
| // URL: http://www.d-project.com/ | |
| // | |
| // Licensed under the MIT license: | |
| // http://www.opensource.org/licenses/mit-license.php | |
| // | |
| // The word "QR Code" is registered trademark of | |
| // DENSO WAVE INCORPORATED | |
| // http://www.denso-wave.com/qrcode/faqpatent-e.html | |
| // | |
| //--------------------------------------------------------------------- | |
| //--------------------------------------------------------------------- | |
| // QR8bitByte | |
| //--------------------------------------------------------------------- | |
| function QR8bitByte(data) { | |
| this.mode = QRMode.MODE_8BIT_BYTE; | |
| this.data = data; | |
| } | |
| QR8bitByte.prototype = { | |
| getLength : function(buffer) { | |
| return this.data.length; | |
| }, | |
| write : function(buffer) { | |
| for (var i = 0; i < this.data.length; i++) { | |
| // not JIS ... | |
| buffer.put(this.data.charCodeAt(i), 8); | |
| } | |
| } | |
| }; | |
| //--------------------------------------------------------------------- | |
| // QRCode | |
| //--------------------------------------------------------------------- | |
| function QRCode(typeNumber, errorCorrectLevel) { | |
| this.typeNumber = typeNumber; | |
| this.errorCorrectLevel = errorCorrectLevel; | |
| this.modules = null; | |
| this.moduleCount = 0; | |
| this.dataCache = null; | |
| this.dataList = new Array(); | |
| } | |
| QRCode.prototype = { | |
| addData : function(data) { | |
| var newData = new QR8bitByte(data); | |
| this.dataList.push(newData); | |
| this.dataCache = null; | |
| }, | |
| isDark : function(row, col) { | |
| if (row < 0 || this.moduleCount <= row || col < 0 || this.moduleCount <= col) { | |
| throw new Error(row + "," + col); | |
| } | |
| return this.modules[row][col]; | |
| }, | |
| getModuleCount : function() { | |
| return this.moduleCount; | |
| }, | |
| make : function() { | |
| // Calculate automatically typeNumber if provided is < 1 | |
| if (this.typeNumber < 1 ){ | |
| var typeNumber = 1; | |
| for (typeNumber = 1; typeNumber < 40; typeNumber++) { | |
| var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, this.errorCorrectLevel); | |
| var buffer = new QRBitBuffer(); | |
| var totalDataCount = 0; | |
| for (var i = 0; i < rsBlocks.length; i++) { | |
| totalDataCount += rsBlocks[i].dataCount; | |
| } | |
| for (var i = 0; i < this.dataList.length; i++) { | |
| var data = this.dataList[i]; | |
| buffer.put(data.mode, 4); | |
| buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber) ); | |
| data.write(buffer); | |
| } | |
| if (buffer.getLengthInBits() <= totalDataCount * 8) | |
| break; | |
| } | |
| this.typeNumber = typeNumber; | |
| } | |
| this.makeImpl(false, this.getBestMaskPattern() ); | |
| }, | |
| makeImpl : function(test, maskPattern) { | |
| this.moduleCount = this.typeNumber * 4 + 17; | |
| this.modules = new Array(this.moduleCount); | |
| for (var row = 0; row < this.moduleCount; row++) { | |
| this.modules[row] = new Array(this.moduleCount); | |
| for (var col = 0; col < this.moduleCount; col++) { | |
| this.modules[row][col] = null;//(col + row) % 3; | |
| } | |
| } | |
| this.setupPositionProbePattern(0, 0); | |
| this.setupPositionProbePattern(this.moduleCount - 7, 0); | |
| this.setupPositionProbePattern(0, this.moduleCount - 7); | |
| this.setupPositionAdjustPattern(); | |
| this.setupTimingPattern(); | |
| this.setupTypeInfo(test, maskPattern); | |
| if (this.typeNumber >= 7) { | |
| this.setupTypeNumber(test); | |
| } | |
| if (this.dataCache == null) { | |
| this.dataCache = QRCode.createData(this.typeNumber, this.errorCorrectLevel, this.dataList); | |
| } | |
| this.mapData(this.dataCache, maskPattern); | |
| }, | |
| setupPositionProbePattern : function(row, col) { | |
| for (var r = -1; r <= 7; r++) { | |
| if (row + r <= -1 || this.moduleCount <= row + r) continue; | |
| for (var c = -1; c <= 7; c++) { | |
| if (col + c <= -1 || this.moduleCount <= col + c) continue; | |
| if ( (0 <= r && r <= 6 && (c == 0 || c == 6) ) | |
| || (0 <= c && c <= 6 && (r == 0 || r == 6) ) | |
| || (2 <= r && r <= 4 && 2 <= c && c <= 4) ) { | |
| this.modules[row + r][col + c] = true; | |
| } else { | |
| this.modules[row + r][col + c] = false; | |
| } | |
| } | |
| } | |
| }, | |
| getBestMaskPattern : function() { | |
| var minLostPoint = 0; | |
| var pattern = 0; | |
| for (var i = 0; i < 8; i++) { | |
| this.makeImpl(true, i); | |
| var lostPoint = QRUtil.getLostPoint(this); | |
| if (i == 0 || minLostPoint > lostPoint) { | |
| minLostPoint = lostPoint; | |
| pattern = i; | |
| } | |
| } | |
| return pattern; | |
| }, | |
| createMovieClip : function(target_mc, instance_name, depth) { | |
| var qr_mc = target_mc.createEmptyMovieClip(instance_name, depth); | |
| var cs = 1; | |
| this.make(); | |
| for (var row = 0; row < this.modules.length; row++) { | |
| var y = row * cs; | |
| for (var col = 0; col < this.modules[row].length; col++) { | |
| var x = col * cs; | |
| var dark = this.modules[row][col]; | |
| if (dark) { | |
| qr_mc.beginFill(0, 100); | |
| qr_mc.moveTo(x, y); | |
| qr_mc.lineTo(x + cs, y); | |
| qr_mc.lineTo(x + cs, y + cs); | |
| qr_mc.lineTo(x, y + cs); | |
| qr_mc.endFill(); | |
| } | |
| } | |
| } | |
| return qr_mc; | |
| }, | |
| setupTimingPattern : function() { | |
| for (var r = 8; r < this.moduleCount - 8; r++) { | |
| if (this.modules[r][6] != null) { | |
| continue; | |
| } | |
| this.modules[r][6] = (r % 2 == 0); | |
| } | |
| for (var c = 8; c < this.moduleCount - 8; c++) { | |
| if (this.modules[6][c] != null) { | |
| continue; | |
| } | |
| this.modules[6][c] = (c % 2 == 0); | |
| } | |
| }, | |
| setupPositionAdjustPattern : function() { | |
| var pos = QRUtil.getPatternPosition(this.typeNumber); | |
| for (var i = 0; i < pos.length; i++) { | |
| for (var j = 0; j < pos.length; j++) { | |
| var row = pos[i]; | |
| var col = pos[j]; | |
| if (this.modules[row][col] != null) { | |
| continue; | |
| } | |
| for (var r = -2; r <= 2; r++) { | |
| for (var c = -2; c <= 2; c++) { | |
| if (r == -2 || r == 2 || c == -2 || c == 2 | |
| || (r == 0 && c == 0) ) { | |
| this.modules[row + r][col + c] = true; | |
| } else { | |
| this.modules[row + r][col + c] = false; | |
| } | |
| } | |
| } | |
| } | |
| } | |
| }, | |
| setupTypeNumber : function(test) { | |
| var bits = QRUtil.getBCHTypeNumber(this.typeNumber); | |
| for (var i = 0; i < 18; i++) { | |
| var mod = (!test && ( (bits >> i) & 1) == 1); | |
| this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = mod; | |
| } | |
| for (var i = 0; i < 18; i++) { | |
| var mod = (!test && ( (bits >> i) & 1) == 1); | |
| this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod; | |
| } | |
| }, | |
| setupTypeInfo : function(test, maskPattern) { | |
| var data = (this.errorCorrectLevel << 3) | maskPattern; | |
| var bits = QRUtil.getBCHTypeInfo(data); | |
| // vertical | |
| for (var i = 0; i < 15; i++) { | |
| var mod = (!test && ( (bits >> i) & 1) == 1); | |
| if (i < 6) { | |
| this.modules[i][8] = mod; | |
| } else if (i < 8) { | |
| this.modules[i + 1][8] = mod; | |
| } else { | |
| this.modules[this.moduleCount - 15 + i][8] = mod; | |
| } | |
| } | |
| // horizontal | |
| for (var i = 0; i < 15; i++) { | |
| var mod = (!test && ( (bits >> i) & 1) == 1); | |
| if (i < 8) { | |
| this.modules[8][this.moduleCount - i - 1] = mod; | |
| } else if (i < 9) { | |
| this.modules[8][15 - i - 1 + 1] = mod; | |
| } else { | |
| this.modules[8][15 - i - 1] = mod; | |
| } | |
| } | |
| // fixed module | |
| this.modules[this.moduleCount - 8][8] = (!test); | |
| }, | |
| mapData : function(data, maskPattern) { | |
| var inc = -1; | |
| var row = this.moduleCount - 1; | |
| var bitIndex = 7; | |
| var byteIndex = 0; | |
| for (var col = this.moduleCount - 1; col > 0; col -= 2) { | |
| if (col == 6) col--; | |
| while (true) { | |
| for (var c = 0; c < 2; c++) { | |
| if (this.modules[row][col - c] == null) { | |
| var dark = false; | |
| if (byteIndex < data.length) { | |
| dark = ( ( (data[byteIndex] >>> bitIndex) & 1) == 1); | |
| } | |
| var mask = QRUtil.getMask(maskPattern, row, col - c); | |
| if (mask) { | |
| dark = !dark; | |
| } | |
| this.modules[row][col - c] = dark; | |
| bitIndex--; | |
| if (bitIndex == -1) { | |
| byteIndex++; | |
| bitIndex = 7; | |
| } | |
| } | |
| } | |
| row += inc; | |
| if (row < 0 || this.moduleCount <= row) { | |
| row -= inc; | |
| inc = -inc; | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| }; | |
| QRCode.PAD0 = 0xEC; | |
| QRCode.PAD1 = 0x11; | |
| QRCode.createData = function(typeNumber, errorCorrectLevel, dataList) { | |
| var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel); | |
| var buffer = new QRBitBuffer(); | |
| for (var i = 0; i < dataList.length; i++) { | |
| var data = dataList[i]; | |
| buffer.put(data.mode, 4); | |
| buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber) ); | |
| data.write(buffer); | |
| } | |
| // calc num max data. | |
| var totalDataCount = 0; | |
| for (var i = 0; i < rsBlocks.length; i++) { | |
| totalDataCount += rsBlocks[i].dataCount; | |
| } | |
| if (buffer.getLengthInBits() > totalDataCount * 8) { | |
| throw new Error("code length overflow. (" | |
| + buffer.getLengthInBits() | |
| + ">" | |
| + totalDataCount * 8 | |
| + ")"); | |
| } | |
| // end code | |
| if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) { | |
| buffer.put(0, 4); | |
| } | |
| // padding | |
| while (buffer.getLengthInBits() % 8 != 0) { | |
| buffer.putBit(false); | |
| } | |
| // padding | |
| while (true) { | |
| if (buffer.getLengthInBits() >= totalDataCount * 8) { | |
| break; | |
| } | |
| buffer.put(QRCode.PAD0, 8); | |
| if (buffer.getLengthInBits() >= totalDataCount * 8) { | |
| break; | |
| } | |
| buffer.put(QRCode.PAD1, 8); | |
| } | |
| return QRCode.createBytes(buffer, rsBlocks); | |
| } | |
| QRCode.createBytes = function(buffer, rsBlocks) { | |
| var offset = 0; | |
| var maxDcCount = 0; | |
| var maxEcCount = 0; | |
| var dcdata = new Array(rsBlocks.length); | |
| var ecdata = new Array(rsBlocks.length); | |
| for (var r = 0; r < rsBlocks.length; r++) { | |
| var dcCount = rsBlocks[r].dataCount; | |
| var ecCount = rsBlocks[r].totalCount - dcCount; | |
| maxDcCount = Math.max(maxDcCount, dcCount); | |
| maxEcCount = Math.max(maxEcCount, ecCount); | |
| dcdata[r] = new Array(dcCount); | |
| for (var i = 0; i < dcdata[r].length; i++) { | |
| dcdata[r][i] = 0xff & buffer.buffer[i + offset]; | |
| } | |
| offset += dcCount; | |
| var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount); | |
| var rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1); | |
| var modPoly = rawPoly.mod(rsPoly); | |
| ecdata[r] = new Array(rsPoly.getLength() - 1); | |
| for (var i = 0; i < ecdata[r].length; i++) { | |
| var modIndex = i + modPoly.getLength() - ecdata[r].length; | |
| ecdata[r][i] = (modIndex >= 0)? modPoly.get(modIndex) : 0; | |
| } | |
| } | |
| var totalCodeCount = 0; | |
| for (var i = 0; i < rsBlocks.length; i++) { | |
| totalCodeCount += rsBlocks[i].totalCount; | |
| } | |
| var data = new Array(totalCodeCount); | |
| var index = 0; | |
| for (var i = 0; i < maxDcCount; i++) { | |
| for (var r = 0; r < rsBlocks.length; r++) { | |
| if (i < dcdata[r].length) { | |
| data[index++] = dcdata[r][i]; | |
| } | |
| } | |
| } | |
| for (var i = 0; i < maxEcCount; i++) { | |
| for (var r = 0; r < rsBlocks.length; r++) { | |
| if (i < ecdata[r].length) { | |
| data[index++] = ecdata[r][i]; | |
| } | |
| } | |
| } | |
| return data; | |
| } | |
| //--------------------------------------------------------------------- | |
| // QRMode | |
| //--------------------------------------------------------------------- | |
| var QRMode = { | |
| MODE_NUMBER : 1 << 0, | |
| MODE_ALPHA_NUM : 1 << 1, | |
| MODE_8BIT_BYTE : 1 << 2, | |
| MODE_KANJI : 1 << 3 | |
| }; | |
| //--------------------------------------------------------------------- | |
| // QRErrorCorrectLevel | |
| //--------------------------------------------------------------------- | |
| var QRErrorCorrectLevel = { | |
| L : 1, | |
| M : 0, | |
| Q : 3, | |
| H : 2 | |
| }; | |
| //--------------------------------------------------------------------- | |
| // QRMaskPattern | |
| //--------------------------------------------------------------------- | |
| var QRMaskPattern = { | |
| PATTERN000 : 0, | |
| PATTERN001 : 1, | |
| PATTERN010 : 2, | |
| PATTERN011 : 3, | |
| PATTERN100 : 4, | |
| PATTERN101 : 5, | |
| PATTERN110 : 6, | |
| PATTERN111 : 7 | |
| }; | |
| //--------------------------------------------------------------------- | |
| // QRUtil | |
| //--------------------------------------------------------------------- | |
| var QRUtil = { | |
| PATTERN_POSITION_TABLE : [ | |
| [], | |
| [6, 18], | |
| [6, 22], | |
| [6, 26], | |
| [6, 30], | |
| [6, 34], | |
| [6, 22, 38], | |
| [6, 24, 42], | |
| [6, 26, 46], | |
| [6, 28, 50], | |
| [6, 30, 54], | |
| [6, 32, 58], | |
| [6, 34, 62], | |
| [6, 26, 46, 66], | |
| [6, 26, 48, 70], | |
| [6, 26, 50, 74], | |
| [6, 30, 54, 78], | |
| [6, 30, 56, 82], | |
| [6, 30, 58, 86], | |
| [6, 34, 62, 90], | |
| [6, 28, 50, 72, 94], | |
| [6, 26, 50, 74, 98], | |
| [6, 30, 54, 78, 102], | |
| [6, 28, 54, 80, 106], | |
| [6, 32, 58, 84, 110], | |
| [6, 30, 58, 86, 114], | |
| [6, 34, 62, 90, 118], | |
| [6, 26, 50, 74, 98, 122], | |
| [6, 30, 54, 78, 102, 126], | |
| [6, 26, 52, 78, 104, 130], | |
| [6, 30, 56, 82, 108, 134], | |
| [6, 34, 60, 86, 112, 138], | |
| [6, 30, 58, 86, 114, 142], | |
| [6, 34, 62, 90, 118, 146], | |
| [6, 30, 54, 78, 102, 126, 150], | |
| [6, 24, 50, 76, 102, 128, 154], | |
| [6, 28, 54, 80, 106, 132, 158], | |
| [6, 32, 58, 84, 110, 136, 162], | |
| [6, 26, 54, 82, 110, 138, 166], | |
| [6, 30, 58, 86, 114, 142, 170] | |
| ], | |
| G15 : (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0), | |
| G18 : (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0), | |
| G15_MASK : (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1), | |
| getBCHTypeInfo : function(data) { | |
| var d = data << 10; | |
| while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 0) { | |
| d ^= (QRUtil.G15 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) ) ); | |
| } | |
| return ( (data << 10) | d) ^ QRUtil.G15_MASK; | |
| }, | |
| getBCHTypeNumber : function(data) { | |
| var d = data << 12; | |
| while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) >= 0) { | |
| d ^= (QRUtil.G18 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) ) ); | |
| } | |
| return (data << 12) | d; | |
| }, | |
| getBCHDigit : function(data) { | |
| var digit = 0; | |
| while (data != 0) { | |
| digit++; | |
| data >>>= 1; | |
| } | |
| return digit; | |
| }, | |
| getPatternPosition : function(typeNumber) { | |
| return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1]; | |
| }, | |
| getMask : function(maskPattern, i, j) { | |
| switch (maskPattern) { | |
| case QRMaskPattern.PATTERN000 : return (i + j) % 2 == 0; | |
| case QRMaskPattern.PATTERN001 : return i % 2 == 0; | |
| case QRMaskPattern.PATTERN010 : return j % 3 == 0; | |
| case QRMaskPattern.PATTERN011 : return (i + j) % 3 == 0; | |
| case QRMaskPattern.PATTERN100 : return (Math.floor(i / 2) + Math.floor(j / 3) ) % 2 == 0; | |
| case QRMaskPattern.PATTERN101 : return (i * j) % 2 + (i * j) % 3 == 0; | |
| case QRMaskPattern.PATTERN110 : return ( (i * j) % 2 + (i * j) % 3) % 2 == 0; | |
| case QRMaskPattern.PATTERN111 : return ( (i * j) % 3 + (i + j) % 2) % 2 == 0; | |
| default : | |
| throw new Error("bad maskPattern:" + maskPattern); | |
| } | |
| }, | |
| getErrorCorrectPolynomial : function(errorCorrectLength) { | |
| var a = new QRPolynomial([1], 0); | |
| for (var i = 0; i < errorCorrectLength; i++) { | |
| a = a.multiply(new QRPolynomial([1, QRMath.gexp(i)], 0) ); | |
| } | |
| return a; | |
| }, | |
| getLengthInBits : function(mode, type) { | |
| if (1 <= type && type < 10) { | |
| // 1 - 9 | |
| switch(mode) { | |
| case QRMode.MODE_NUMBER : return 10; | |
| case QRMode.MODE_ALPHA_NUM : return 9; | |
| case QRMode.MODE_8BIT_BYTE : return 8; | |
| case QRMode.MODE_KANJI : return 8; | |
| default : | |
| throw new Error("mode:" + mode); | |
| } | |
| } else if (type < 27) { | |
| // 10 - 26 | |
| switch(mode) { | |
| case QRMode.MODE_NUMBER : return 12; | |
| case QRMode.MODE_ALPHA_NUM : return 11; | |
| case QRMode.MODE_8BIT_BYTE : return 16; | |
| case QRMode.MODE_KANJI : return 10; | |
| default : | |
| throw new Error("mode:" + mode); | |
| } | |
| } else if (type < 41) { | |
| // 27 - 40 | |
| switch(mode) { | |
| case QRMode.MODE_NUMBER : return 14; | |
| case QRMode.MODE_ALPHA_NUM : return 13; | |
| case QRMode.MODE_8BIT_BYTE : return 16; | |
| case QRMode.MODE_KANJI : return 12; | |
| default : | |
| throw new Error("mode:" + mode); | |
| } | |
| } else { | |
| throw new Error("type:" + type); | |
| } | |
| }, | |
| getLostPoint : function(qrCode) { | |
| var moduleCount = qrCode.getModuleCount(); | |
| var lostPoint = 0; | |
| // LEVEL1 | |
| for (var row = 0; row < moduleCount; row++) { | |
| for (var col = 0; col < moduleCount; col++) { | |
| var sameCount = 0; | |
| var dark = qrCode.isDark(row, col); | |
| for (var r = -1; r <= 1; r++) { | |
| if (row + r < 0 || moduleCount <= row + r) { | |
| continue; | |
| } | |
| for (var c = -1; c <= 1; c++) { | |
| if (col + c < 0 || moduleCount <= col + c) { | |
| continue; | |
| } | |
| if (r == 0 && c == 0) { | |
| continue; | |
| } | |
| if (dark == qrCode.isDark(row + r, col + c) ) { | |
| sameCount++; | |
| } | |
| } | |
| } | |
| if (sameCount > 5) { | |
| lostPoint += (3 + sameCount - 5); | |
| } | |
| } | |
| } | |
| // LEVEL2 | |
| for (var row = 0; row < moduleCount - 1; row++) { | |
| for (var col = 0; col < moduleCount - 1; col++) { | |
| var count = 0; | |
| if (qrCode.isDark(row, col ) ) count++; | |
| if (qrCode.isDark(row + 1, col ) ) count++; | |
| if (qrCode.isDark(row, col + 1) ) count++; | |
| if (qrCode.isDark(row + 1, col + 1) ) count++; | |
| if (count == 0 || count == 4) { | |
| lostPoint += 3; | |
| } | |
| } | |
| } | |
| // LEVEL3 | |
| for (var row = 0; row < moduleCount; row++) { | |
| for (var col = 0; col < moduleCount - 6; col++) { | |
| if (qrCode.isDark(row, col) | |
| && !qrCode.isDark(row, col + 1) | |
| && qrCode.isDark(row, col + 2) | |
| && qrCode.isDark(row, col + 3) | |
| && qrCode.isDark(row, col + 4) | |
| && !qrCode.isDark(row, col + 5) | |
| && qrCode.isDark(row, col + 6) ) { | |
| lostPoint += 40; | |
| } | |
| } | |
| } | |
| for (var col = 0; col < moduleCount; col++) { | |
| for (var row = 0; row < moduleCount - 6; row++) { | |
| if (qrCode.isDark(row, col) | |
| && !qrCode.isDark(row + 1, col) | |
| && qrCode.isDark(row + 2, col) | |
| && qrCode.isDark(row + 3, col) | |
| && qrCode.isDark(row + 4, col) | |
| && !qrCode.isDark(row + 5, col) | |
| && qrCode.isDark(row + 6, col) ) { | |
| lostPoint += 40; | |
| } | |
| } | |
| } | |
| // LEVEL4 | |
| var darkCount = 0; | |
| for (var col = 0; col < moduleCount; col++) { | |
| for (var row = 0; row < moduleCount; row++) { | |
| if (qrCode.isDark(row, col) ) { | |
| darkCount++; | |
| } | |
| } | |
| } | |
| var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5; | |
| lostPoint += ratio * 10; | |
| return lostPoint; | |
| } | |
| }; | |
| //--------------------------------------------------------------------- | |
| // QRMath | |
| //--------------------------------------------------------------------- | |
| var QRMath = { | |
| glog : function(n) { | |
| if (n < 1) { | |
| throw new Error("glog(" + n + ")"); | |
| } | |
| return QRMath.LOG_TABLE[n]; | |
| }, | |
| gexp : function(n) { | |
| while (n < 0) { | |
| n += 255; | |
| } | |
| while (n >= 256) { | |
| n -= 255; | |
| } | |
| return QRMath.EXP_TABLE[n]; | |
| }, | |
| EXP_TABLE : new Array(256), | |
| LOG_TABLE : new Array(256) | |
| }; | |
| for (var i = 0; i < 8; i++) { | |
| QRMath.EXP_TABLE[i] = 1 << i; | |
| } | |
| for (var i = 8; i < 256; i++) { | |
| QRMath.EXP_TABLE[i] = QRMath.EXP_TABLE[i - 4] | |
| ^ QRMath.EXP_TABLE[i - 5] | |
| ^ QRMath.EXP_TABLE[i - 6] | |
| ^ QRMath.EXP_TABLE[i - 8]; | |
| } | |
| for (var i = 0; i < 255; i++) { | |
| QRMath.LOG_TABLE[QRMath.EXP_TABLE[i] ] = i; | |
| } | |
| //--------------------------------------------------------------------- | |
| // QRPolynomial | |
| //--------------------------------------------------------------------- | |
| function QRPolynomial(num, shift) { | |
| if (num.length == undefined) { | |
| throw new Error(num.length + "/" + shift); | |
| } | |
| var offset = 0; | |
| while (offset < num.length && num[offset] == 0) { | |
| offset++; | |
| } | |
| this.num = new Array(num.length - offset + shift); | |
| for (var i = 0; i < num.length - offset; i++) { | |
| this.num[i] = num[i + offset]; | |
| } | |
| } | |
| QRPolynomial.prototype = { | |
| get : function(index) { | |
| return this.num[index]; | |
| }, | |
| getLength : function() { | |
| return this.num.length; | |
| }, | |
| multiply : function(e) { | |
| var num = new Array(this.getLength() + e.getLength() - 1); | |
| for (var i = 0; i < this.getLength(); i++) { | |
| for (var j = 0; j < e.getLength(); j++) { | |
| num[i + j] ^= QRMath.gexp(QRMath.glog(this.get(i) ) + QRMath.glog(e.get(j) ) ); | |
| } | |
| } | |
| return new QRPolynomial(num, 0); | |
| }, | |
| mod : function(e) { | |
| if (this.getLength() - e.getLength() < 0) { | |
| return this; | |
| } | |
| var ratio = QRMath.glog(this.get(0) ) - QRMath.glog(e.get(0) ); | |
| var num = new Array(this.getLength() ); | |
| for (var i = 0; i < this.getLength(); i++) { | |
| num[i] = this.get(i); | |
| } | |
| for (var i = 0; i < e.getLength(); i++) { | |
| num[i] ^= QRMath.gexp(QRMath.glog(e.get(i) ) + ratio); | |
| } | |
| // recursive call | |
| return new QRPolynomial(num, 0).mod(e); | |
| } | |
| }; | |
| //--------------------------------------------------------------------- | |
| // QRRSBlock | |
| //--------------------------------------------------------------------- | |
| function QRRSBlock(totalCount, dataCount) { | |
| this.totalCount = totalCount; | |
| this.dataCount = dataCount; | |
| } | |
| QRRSBlock.RS_BLOCK_TABLE = [ | |
| // L | |
| // M | |
| // Q | |
| // H | |
| // 1 | |
| [1, 26, 19], | |
| [1, 26, 16], | |
| [1, 26, 13], | |
| [1, 26, 9], | |
| // 2 | |
| [1, 44, 34], | |
| [1, 44, 28], | |
| [1, 44, 22], | |
| [1, 44, 16], | |
| // 3 | |
| [1, 70, 55], | |
| [1, 70, 44], | |
| [2, 35, 17], | |
| [2, 35, 13], | |
| // 4 | |
| [1, 100, 80], | |
| [2, 50, 32], | |
| [2, 50, 24], | |
| [4, 25, 9], | |
| // 5 | |
| [1, 134, 108], | |
| [2, 67, 43], | |
| [2, 33, 15, 2, 34, 16], | |
| [2, 33, 11, 2, 34, 12], | |
| // 6 | |
| [2, 86, 68], | |
| [4, 43, 27], | |
| [4, 43, 19], | |
| [4, 43, 15], | |
| // 7 | |
| [2, 98, 78], | |
| [4, 49, 31], | |
| [2, 32, 14, 4, 33, 15], | |
| [4, 39, 13, 1, 40, 14], | |
| // 8 | |
| [2, 121, 97], | |
| [2, 60, 38, 2, 61, 39], | |
| [4, 40, 18, 2, 41, 19], | |
| [4, 40, 14, 2, 41, 15], | |
| // 9 | |
| [2, 146, 116], | |
| [3, 58, 36, 2, 59, 37], | |
| [4, 36, 16, 4, 37, 17], | |
| [4, 36, 12, 4, 37, 13], | |
| // 10 | |
| [2, 86, 68, 2, 87, 69], | |
| [4, 69, 43, 1, 70, 44], | |
| [6, 43, 19, 2, 44, 20], | |
| [6, 43, 15, 2, 44, 16], | |
| // 11 | |
| [4, 101, 81], | |
| [1, 80, 50, 4, 81, 51], | |
| [4, 50, 22, 4, 51, 23], | |
| [3, 36, 12, 8, 37, 13], | |
| // 12 | |
| [2, 116, 92, 2, 117, 93], | |
| [6, 58, 36, 2, 59, 37], | |
| [4, 46, 20, 6, 47, 21], | |
| [7, 42, 14, 4, 43, 15], | |
| // 13 | |
| [4, 133, 107], | |
| [8, 59, 37, 1, 60, 38], | |
| [8, 44, 20, 4, 45, 21], | |
| [12, 33, 11, 4, 34, 12], | |
| // 14 | |
| [3, 145, 115, 1, 146, 116], | |
| [4, 64, 40, 5, 65, 41], | |
| [11, 36, 16, 5, 37, 17], | |
| [11, 36, 12, 5, 37, 13], | |
| // 15 | |
| [5, 109, 87, 1, 110, 88], | |
| [5, 65, 41, 5, 66, 42], | |
| [5, 54, 24, 7, 55, 25], | |
| [11, 36, 12], | |
| // 16 | |
| [5, 122, 98, 1, 123, 99], | |
| [7, 73, 45, 3, 74, 46], | |
| [15, 43, 19, 2, 44, 20], | |
| [3, 45, 15, 13, 46, 16], | |
| // 17 | |
| [1, 135, 107, 5, 136, 108], | |
| [10, 74, 46, 1, 75, 47], | |
| [1, 50, 22, 15, 51, 23], | |
| [2, 42, 14, 17, 43, 15], | |
| // 18 | |
| [5, 150, 120, 1, 151, 121], | |
| [9, 69, 43, 4, 70, 44], | |
| [17, 50, 22, 1, 51, 23], | |
| [2, 42, 14, 19, 43, 15], | |
| // 19 | |
| [3, 141, 113, 4, 142, 114], | |
| [3, 70, 44, 11, 71, 45], | |
| [17, 47, 21, 4, 48, 22], | |
| [9, 39, 13, 16, 40, 14], | |
| // 20 | |
| [3, 135, 107, 5, 136, 108], | |
| [3, 67, 41, 13, 68, 42], | |
| [15, 54, 24, 5, 55, 25], | |
| [15, 43, 15, 10, 44, 16], | |
| // 21 | |
| [4, 144, 116, 4, 145, 117], | |
| [17, 68, 42], | |
| [17, 50, 22, 6, 51, 23], | |
| [19, 46, 16, 6, 47, 17], | |
| // 22 | |
| [2, 139, 111, 7, 140, 112], | |
| [17, 74, 46], | |
| [7, 54, 24, 16, 55, 25], | |
| [34, 37, 13], | |
| // 23 | |
| [4, 151, 121, 5, 152, 122], | |
| [4, 75, 47, 14, 76, 48], | |
| [11, 54, 24, 14, 55, 25], | |
| [16, 45, 15, 14, 46, 16], | |
| // 24 | |
| [6, 147, 117, 4, 148, 118], | |
| [6, 73, 45, 14, 74, 46], | |
| [11, 54, 24, 16, 55, 25], | |
| [30, 46, 16, 2, 47, 17], | |
| // 25 | |
| [8, 132, 106, 4, 133, 107], | |
| [8, 75, 47, 13, 76, 48], | |
| [7, 54, 24, 22, 55, 25], | |
| [22, 45, 15, 13, 46, 16], | |
| // 26 | |
| [10, 142, 114, 2, 143, 115], | |
| [19, 74, 46, 4, 75, 47], | |
| [28, 50, 22, 6, 51, 23], | |
| [33, 46, 16, 4, 47, 17], | |
| // 27 | |
| [8, 152, 122, 4, 153, 123], | |
| [22, 73, 45, 3, 74, 46], | |
| [8, 53, 23, 26, 54, 24], | |
| [12, 45, 15, 28, 46, 16], | |
| // 28 | |
| [3, 147, 117, 10, 148, 118], | |
| [3, 73, 45, 23, 74, 46], | |
| [4, 54, 24, 31, 55, 25], | |
| [11, 45, 15, 31, 46, 16], | |
| // 29 | |
| [7, 146, 116, 7, 147, 117], | |
| [21, 73, 45, 7, 74, 46], | |
| [1, 53, 23, 37, 54, 24], | |
| [19, 45, 15, 26, 46, 16], | |
| // 30 | |
| [5, 145, 115, 10, 146, 116], | |
| [19, 75, 47, 10, 76, 48], | |
| [15, 54, 24, 25, 55, 25], | |
| [23, 45, 15, 25, 46, 16], | |
| // 31 | |
| [13, 145, 115, 3, 146, 116], | |
| [2, 74, 46, 29, 75, 47], | |
| [42, 54, 24, 1, 55, 25], | |
| [23, 45, 15, 28, 46, 16], | |
| // 32 | |
| [17, 145, 115], | |
| [10, 74, 46, 23, 75, 47], | |
| [10, 54, 24, 35, 55, 25], | |
| [19, 45, 15, 35, 46, 16], | |
| // 33 | |
| [17, 145, 115, 1, 146, 116], | |
| [14, 74, 46, 21, 75, 47], | |
| [29, 54, 24, 19, 55, 25], | |
| [11, 45, 15, 46, 46, 16], | |
| // 34 | |
| [13, 145, 115, 6, 146, 116], | |
| [14, 74, 46, 23, 75, 47], | |
| [44, 54, 24, 7, 55, 25], | |
| [59, 46, 16, 1, 47, 17], | |
| // 35 | |
| [12, 151, 121, 7, 152, 122], | |
| [12, 75, 47, 26, 76, 48], | |
| [39, 54, 24, 14, 55, 25], | |
| [22, 45, 15, 41, 46, 16], | |
| // 36 | |
| [6, 151, 121, 14, 152, 122], | |
| [6, 75, 47, 34, 76, 48], | |
| [46, 54, 24, 10, 55, 25], | |
| [2, 45, 15, 64, 46, 16], | |
| // 37 | |
| [17, 152, 122, 4, 153, 123], | |
| [29, 74, 46, 14, 75, 47], | |
| [49, 54, 24, 10, 55, 25], | |
| [24, 45, 15, 46, 46, 16], | |
| // 38 | |
| [4, 152, 122, 18, 153, 123], | |
| [13, 74, 46, 32, 75, 47], | |
| [48, 54, 24, 14, 55, 25], | |
| [42, 45, 15, 32, 46, 16], | |
| // 39 | |
| [20, 147, 117, 4, 148, 118], | |
| [40, 75, 47, 7, 76, 48], | |
| [43, 54, 24, 22, 55, 25], | |
| [10, 45, 15, 67, 46, 16], | |
| // 40 | |
| [19, 148, 118, 6, 149, 119], | |
| [18, 75, 47, 31, 76, 48], | |
| [34, 54, 24, 34, 55, 25], | |
| [20, 45, 15, 61, 46, 16] | |
| ]; | |
| QRRSBlock.getRSBlocks = function(typeNumber, errorCorrectLevel) { | |
| var rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel); | |
| if (rsBlock == undefined) { | |
| throw new Error("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel); | |
| } | |
| var length = rsBlock.length / 3; | |
| var list = new Array(); | |
| for (var i = 0; i < length; i++) { | |
| var count = rsBlock[i * 3 + 0]; | |
| var totalCount = rsBlock[i * 3 + 1]; | |
| var dataCount = rsBlock[i * 3 + 2]; | |
| for (var j = 0; j < count; j++) { | |
| list.push(new QRRSBlock(totalCount, dataCount) ); | |
| } | |
| } | |
| return list; | |
| } | |
| QRRSBlock.getRsBlockTable = function(typeNumber, errorCorrectLevel) { | |
| switch(errorCorrectLevel) { | |
| case QRErrorCorrectLevel.L : | |
| return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0]; | |
| case QRErrorCorrectLevel.M : | |
| return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1]; | |
| case QRErrorCorrectLevel.Q : | |
| return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2]; | |
| case QRErrorCorrectLevel.H : | |
| return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3]; | |
| default : | |
| return undefined; | |
| } | |
| } | |
| //--------------------------------------------------------------------- | |
| // QRBitBuffer | |
| //--------------------------------------------------------------------- | |
| function QRBitBuffer() { | |
| this.buffer = new Array(); | |
| this.length = 0; | |
| } | |
| QRBitBuffer.prototype = { | |
| get : function(index) { | |
| var bufIndex = Math.floor(index / 8); | |
| return ( (this.buffer[bufIndex] >>> (7 - index % 8) ) & 1) == 1; | |
| }, | |
| put : function(num, length) { | |
| for (var i = 0; i < length; i++) { | |
| this.putBit( ( (num >>> (length - i - 1) ) & 1) == 1); | |
| } | |
| }, | |
| getLengthInBits : function() { | |
| return this.length; | |
| }, | |
| putBit : function(bit) { | |
| var bufIndex = Math.floor(this.length / 8); | |
| if (this.buffer.length <= bufIndex) { | |
| this.buffer.push(0); | |
| } | |
| if (bit) { | |
| this.buffer[bufIndex] |= (0x80 >>> (this.length % 8) ); | |
| } | |
| this.length++; | |
| } | |
| }; |