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Fix issue with hit-testing filled paths that are not closed.

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This commit is contained in:
Jürg Lehni 2012-11-28 22:13:31 -08:00
parent 07688a685e
commit d0cc8b6c16
1 changed files with 5 additions and 2 deletions
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7
src/path/Path.js
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@ -1261,12 +1261,15 @@ var Path = this.Path = PathItem.extend(/** @lends Path# */{
contains: function(point) {
point = Point.read(arguments);
// If the path is not closed, it we should not bail out in case it has
// a fill color!
if (!this._closed && !this._style._fillColor
|| !this.getRoughBounds()._containsPoint(point))
return false;
// Note: This only works correctly with even-odd fill rule, or paths
// that do not overlap with themselves.
// TODO: Find out how to implement the "Point In Polygon" problem for
// non-zero fill rule.
if (!this._closed || !this.getRoughBounds()._containsPoint(point))
return false;
// Use the crossing number algorithm, by counting the crossings of the
// beam in right y-direction with the shape, and see if it's an odd
// number, meaning the starting point is inside the shape.