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Keep Math.acos() argument between -1 and 1.

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Closes #482.
This commit is contained in:
Jürg Lehni 2014-07-25 21:01:58 +02:00
parent 4fab100e71
commit 04a0c995bc
1 changed files with 2 additions and 1 deletions
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3
src/basic/Point.js
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@ -331,7 +331,8 @@ var Point = Base.extend(/** @lends Point# */{
if (Numerical.isZero(div)) { if (Numerical.isZero(div)) {
return NaN; return NaN;
} else { } else {
return Math.acos(this.dot(point) / div); var a = this.dot(point) / div;
return Math.acos(a < -1 ? -1 : a > 1 ? 1 : a);
} }
} }
}, },