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Clean up reorientCompoundPath().

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Jürg Lehni 2013-05-03 22:09:56 -07:00
parent 25e5582a35
commit d014ed3c68
1 changed files with 19 additions and 24 deletions
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43
src/path/PathItem.Boolean.js
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@ -77,35 +77,30 @@ PathItem.inject(new function() {
* @return {boolean} the winding direction of the base contour(true if clockwise) * @return {boolean} the winding direction of the base contour(true if clockwise)
*/ */
function reorientCompoundPath(path) { function reorientCompoundPath(path) {
if (!(path instanceof CompoundPath)) { if (!(path instanceof CompoundPath))
path.closed = true; return path.isClockwise();
return path.clockwise; var children = path._children,
length = children.length,
bounds = new Array(length),
counters = new Array(length),
clockwise = children[0].isClockwise();
for (var i = 0; i < length; i++) {
bounds[i] = children[i].getBounds();
counters[i] = 0;
} }
var children = path.children, len = children.length, baseWinding; for (var i = 0; i < length; i++) {
var bounds = new Array(len); for (var j = 1; j < length; j++) {
var tmparray = new Array(len); if (i !== j && bounds[i].contains(bounds[j]))
baseWinding = children[0].clockwise; counters[j]++;
// Omit the first path
for (i = 0; i < len; i++) {
children[i].closed = true;
bounds[i] = children[i].bounds;
tmparray[i] = 0;
}
for (i = 0; i < len; i++) {
var p1 = children[i];
for (j = 0; j < len; j++) {
var p2 = children[j];
if (i !== j && bounds[i].contains(bounds[j])) {
tmparray[j]++;
}
} }
} }
for (i = 1; i < len; i++) { // Omit the first child
if (tmparray[i] % 2 === 0) { for (var i = 1; i < length; i++) {
children[i].clockwise = baseWinding; if (counters[i] % 2 === 0) {
children[i].setClockwise(clockwise);
} }
} }
return baseWinding; return clockwise;
} }
function computeBoolean(path1, path2, operator, subtract, _cache) { function computeBoolean(path1, path2, operator, subtract, _cache) {