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Rounding floats in CFF

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This commit is contained in:
Yury Delendik 2013-05-03 15:13:22 -05:00
parent d1cea4a166
commit 90f8f4484c
1 changed files with 8 additions and 0 deletions
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8
src/fonts.js
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@ -6897,6 +6897,14 @@ var CFFCompiler = (function CFFCompilerClosure() {
}, },
encodeFloat: function CFFCompiler_encodeFloat(num) { encodeFloat: function CFFCompiler_encodeFloat(num) {
var value = num.toString(); var value = num.toString();
// rounding inaccurate doubles
var m = /\.(\d*?)(?:9{5,20}|0{5,20})\d{0,2}(?:e(.+)|$)/.exec(value);
if (m) {
var epsilon = parseFloat('1e' + ((m[2] ? +m[2] : 0) + m[1].length));
value = (Math.round(num * epsilon) / epsilon).toString();
}
var nibbles = ''; var nibbles = '';
for (var i = 0, ii = value.length; i < ii; ++i) { for (var i = 0, ii = value.length; i < ii; ++i) {
var a = value[i]; var a = value[i];