Robert O'Callahan 6e80dcb31b Bug 1081185. Traverse rect edges when searching for w=0 crossings instead of taking diagonals. r=mattwoodrow
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extra : rebase_source : c87d145abea750cf0d8b02f0ea387ec9148e6be1
2014-10-22 11:01:00 +13:00
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