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Add support for scientific notation to WKT format

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This commit is contained in:
Marc Jansen
2015-05-18 10:07:03 +02:00
parent 1ac41c7403
commit 2b76bc05a5
2 changed files with 69 additions and 1 deletions
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13
src/ol/format/wktformat.js
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@@ -491,12 +491,23 @@ ol.format.WKT.Lexer.prototype.nextToken = function() {
ol.format.WKT.Lexer.prototype.readNumber_ = function() {
var c, index = this.index_;
var decimal = false;
var scientificNotation = false;
do {
if (c == '.') {
decimal = true;
} else if (goog.isDef(c) && c.toLowerCase() == 'e') {
scientificNotation = true;
}
c = this.nextChar_();
} while (this.isNumeric_(c, decimal));
} while (
this.isNumeric_(c, decimal) ||
// once c is defined we may have a scientific number indicated by 'e'
// but only if we haven't detected a scientific number before
!scientificNotation && goog.isDef(c) && c.toLowerCase() == 'e' ||
// once we know that we have a scientific number, both '-' and '+'
// are allowed
scientificNotation && (c == '-' || c == '+')
);
return parseFloat(this.wkt.substring(index, this.index_--));
};