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Add note about usage of _originalWinding.

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This commit is contained in:
Jürg Lehni 2015-09-20 14:19:14 +02:00
parent 20ed1e007c
commit 946157f1b1
1 changed files with 7 additions and 2 deletions
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9
src/path/PathItem.Boolean.js
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@ -551,7 +551,8 @@ PathItem.inject(new function() {
+ ', next vis:' + !!next._visited
+ ', next start:' + (next === start
|| next === otherStart)
+ ', seg op:' + (operator && operator(seg._originalWinding))
+ ', seg op:' + (operator
&& operator(seg._originalWinding))
+ ', next op:' + (operator && operator(next._winding))
+ ', next: ' + (!!inter._next));
}
@ -561,7 +562,11 @@ PathItem.inject(new function() {
return !seg._visited && (!next._visited
|| next === start || next === otherStart)
&& (!operator
|| operator(seg._originalWinding) && operator(next._winding))
// NOTE: We need to use _originalWinding here since an
// overlap crossing might have brought us here, in which
// case operator(seg._winding) might be false.
|| operator(seg._originalWinding)
&& operator(next._winding))
? inter
// If it's no match, check the other intersection first,
// then carry on with the next linked intersection.