Define CompoundPath#reverse() and #clockwise, and replace reversePath() with it.

This commit is contained in:
Jürg Lehni 2013-05-03 21:41:22 -07:00
parent bd3031cdff
commit 25e5582a35
3 changed files with 33 additions and 22 deletions

View file

@ -89,11 +89,36 @@ var CompoundPath = this.CompoundPath = PathItem.extend(/** @lends CompoundPath#
return this;
},
/**
* Reverses the orientation of all nested paths.
*/
reverse: function() {
var children = this._children;
for (var i = 0, l = children.length; i < l; i++)
children[i].reverse();
},
smooth: function() {
for (var i = 0, l = this._children.length; i < l; i++)
this._children[i].smooth();
},
/**
* Specifies whether the compound path is oriented clock-wise.
*
* @type Boolean
* @bean
*/
isClockwise: function() {
var child = this.getFirstChild();
return child && child.isClockwise();
},
setClockwise: function(clockwise) {
if (this.isClockwise() != !!clockwise)
this.reverse();
},
/**
* The first Segment contained within the path.
*

View file

@ -1085,19 +1085,18 @@ var Path = this.Path = PathItem.extend(/** @lends Path# */{
},
setClockwise: function(clockwise) {
// Only revers the path if its clockwise orientation is not the same
// as what it is now demanded to be.
// On-the-fly conversion to boolean:
if (this.isClockwise() != (clockwise = !!clockwise)) {
// Only revers the path if its clockwise orientation is not the same
// as what it is now demanded to be.
if (this.isClockwise() != (clockwise = !!clockwise))
this.reverse();
}
// Reverse only flips _clockwise state if it was already set, so let's
// always set this here now.
this._clockwise = clockwise;
},
/**
* Reverses the segments of the path.
* Reverses the orientation of the path, by reversing all its segments.
*/
reverse: function() {
this._segments.reverse();

View file

@ -108,21 +108,6 @@ PathItem.inject(new function() {
return baseWinding;
}
function reversePath(path) {
var baseWinding;
if (path instanceof CompoundPath) {
var children = path.children, i, len;
for (i = 0, len = children.length; i < len; i++) {
children[i].reverse();
}
baseWinding = children[0].clockwise;
} else {
path.reverse();
baseWinding = path.clockwise;
}
return baseWinding;
}
function computeBoolean(path1, path2, operator, subtract, _cache) {
var _path1, _path2, path1Clockwise, path2Clockwise;
var ixs, path1Id, path2Id;
@ -147,8 +132,10 @@ PathItem.inject(new function() {
path1Id = _path1.id;
path2Id = _path2.id;
// Do operator specific calculations before we begin
if (subtract)
path2Clockwise = reversePath(_path2);
if (subtract) {
_path2.reverse();
path2Clockwise = !path2Clockwise;
}
var i, j, len, path, crv;
var paths = [];