зеркало из https://github.com/mozilla/gecko-dev.git
c8d7bee5ff
If we have a rotate axis whose length is extremely large, we will get an infinite value, and its normalized vector is a zero vector, instead of an unit vector, i.e. (x/inf, y/inf, z/inf) == (0, 0, 0). The solution is: we scale the vector, so the length becomes a finite value, and we could get a valid unit vector. Therefore, we use a different normalization method, robust_normalize(). MozReview-Commit-ID: L8SteFe09aO --HG-- extra : rebase_source : 4568c8bf906a9246e4ef13672a9ed541852b974a |
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