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_tracePaths: support self-intersections

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hkrish 2014-02-16 18:47:11 +01:00
parent a62a54d7c1
commit e88ae54a22
1 changed files with 2 additions and 2 deletions
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src/path/PathItem.js
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@ -466,7 +466,7 @@ var PathItem = Item.extend(/** @lends PathItem# */{
* included in the final contour or not. * included in the final contour or not.
* @return {Array} Array of contours traced. * @return {Array} Array of contours traced.
*/ */
_tracePaths: function(segments, operator) { _tracePaths: function(segments, operator, selfIx) {
// Utility function. Correctly returns entry and exit tangents of an // Utility function. Correctly returns entry and exit tangents of an
// intersection, even when the curve[s] are linear. // intersection, even when the curve[s] are linear.
function getEntryExitTangents(seg) { function getEntryExitTangents(seg) {
@ -519,7 +519,7 @@ var PathItem = Item.extend(/** @lends PathItem# */{
// If the intersection segment is valid, try switching to // If the intersection segment is valid, try switching to
// it, with an appropriate direction to continue traversal. // it, with an appropriate direction to continue traversal.
// else, stay on the same contour. // else, stay on the same contour.
if (!operator(seg._winding) && ixOther && if ((!operator(seg._winding) || selfIx) && ixOther &&
(ixOtherSeg = ixOther._segment) && (ixOtherSeg = ixOther._segment) &&
ixOtherSeg !== startSeg && firstHandleIn) { ixOtherSeg !== startSeg && firstHandleIn) {
entryExitTangents = getEntryExitTangents(seg); entryExitTangents = getEntryExitTangents(seg);