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++; | |
} | |
}; |