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Merge pull request #8 from fanwashere/master

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Fix rounding issue causing border-like artifacts.
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sivision.chen 2016-03-11 14:57:58 +08:00
commit 9b504804ed
1 changed files with 2 additions and 2 deletions
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lib/QRCode.js
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@ -25,8 +25,8 @@ function renderCanvas(canvas) {
cells.forEach(function(row, rowIndex) { cells.forEach(function(row, rowIndex) {
row.forEach(function(column, columnIndex) { row.forEach(function(column, columnIndex) {
ctx.fillStyle = column ? bgColor : fgColor; ctx.fillStyle = column ? bgColor : fgColor;
var w = Math.ceil((rowIndex + 1) * cellWidth) - Math.floor(rowIndex * cellWidth); var w = Math.round((rowIndex + 1) * cellWidth) - Math.round(rowIndex * cellWidth);
var h = Math.ceil((columnIndex + 1) * cellHeight) - Math.floor(columnIndex * cellHeight); var h = Math.round((columnIndex + 1) * cellHeight) - Math.round(columnIndex * cellHeight);
ctx.fillRect(Math.round(rowIndex * cellWidth), Math.round(columnIndex * cellHeight), w, h); ctx.fillRect(Math.round(rowIndex * cellWidth), Math.round(columnIndex * cellHeight), w, h);
}); });
}); });