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Merge loops in reorientPath().

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This commit is contained in:
Jürg Lehni 2013-05-03 23:25:26 -07:00
parent 37300455a8
commit a5d00e64cf
1 changed files with 9 additions and 15 deletions
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24
src/path/PathItem.Boolean.js
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@ -64,17 +64,14 @@ PathItem.inject(new function() {
}
/**
* To deal with a HTML canvas requirement where CompoundPaths' child contours
* has to be of different winding direction for correctly filling holes.
* But if some individual countours are disjoint, i.e. islands, we have to
* reorient them so that
* the holes have opposit winding direction (already handled by paperjs)
* islands has to have same winding direction (as the first child of the path)
* To deal with a HTML5 canvas requirement where CompoundPaths' child
* contours has to be of different winding direction for correctly filling
* holes. But if some individual countours are disjoint, i.e. islands, we
* have to reorient them so that:
* - the holes have opposit winding direction (already handled by paper.js)
* - islands have to have the same winding direction as the first child
*
* Does NOT handle selfIntersecting CompoundPaths.
*
* @param {CompoundPath} path - Input CompoundPath, Note: This path could be modified if need be.
* @return {boolean} the winding direction of the base contour(true if clockwise)
* NOTE: Does NOT handle self-intersecting CompoundPaths.
*/
function reorientPath(path) {
if (path instanceof CompoundPath) {
@ -92,12 +89,9 @@ PathItem.inject(new function() {
if (i !== j && bounds[i].contains(bounds[j]))
counters[j]++;
}
}
// Omit the first child
for (var i = 1; i < length; i++) {
if (counters[i] % 2 === 0) {
// Omit the first child
if (i > 0 && counters[i] % 2 === 0)
children[i].setClockwise(clockwise);
}
}
}
return path;