scratchfoundation/paper.js
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Define compoundChildren hitTest option to get matching children instead of parent.

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This commit is contained in:
Jürg Lehni 2013-10-18 15:40:41 +02:00
parent f8106ae18f
commit 304ecbc3be
2 changed files with 17 additions and 17 deletions
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31
src/path/CompoundPath.js
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@ -205,34 +205,33 @@ var CompoundPath = PathItem.extend(/** @lends CompoundPath# */{
children[i]._draw(ctx, param);
var res = ctx.isPointInPath(point.x, point.y, this.getWindingRule());
CanvasProvider.release(ctx);
return res && children;
/*#*/ } // options.nativeContains
return res;
/*#*/ } else { // !options.nativeContains
// Compound paths are a little complex: In order to determine whether a
// point is inside a path or not due to the winding rule, we need to
// check all the children and count how many intersect. If it's an odd
// number, the point is inside the path. Once we know it's inside the
// path, _hitTest also needs access to the first intersecting element,
// for the HitResult, so we return it here.
var total = 0,
first = null,
evenOdd = this.getWindingRule() === 'evenodd';
for (var i = 0, l = this._children.length; i < l; i++) {
var child = this._children[i],
winding = child._getWinding(point);
total += winding;
if (!first && (evenOdd ? winding & 1 : winding))
first = child;
}
return (evenOdd ? total & 1 : total) && first;
var children = this._children,
winding = 0;
for (var i = 0, l = children.length; i < l; i++)
winding += children[i]._getWinding(point);
return !!(this.getWindingRule() === 'evenodd' ? winding & 1 : winding);
/*#*/ } // !options.nativeContains
},
_hitTest: function _hitTest(point, options) {
var res = _hitTest.base.call(this, point,
Base.merge(options, { fill: false }));
if (!res && options.fill && this.hasFill()) {
res = this._contains(point);
res = res ? new HitResult('fill', res) : null;
if (options.compoundChildren) {
var children = this._children;
for (var i = children.length - 1; i >= 0 && !res; i--)
res = children[i]._hitTest(point, options);
} else if (this._contains(point)) {
res = new HitResult('fill', this);
}
}
return res;
},

3
src/path/Path.js
View file

@ -1735,9 +1735,10 @@ var Path = PathItem.extend(/** @lends Path# */{
var res = ctx.isPointInPath(point.x, point.y, this.getWindingRule());
CanvasProvider.release(ctx);
return res;
/*#*/ } // options.nativeContains
/*#*/ } else { // !options.nativeContains
var winding = this._getWinding(point);
return !!(this.getWindingRule() == 'evenodd' ? winding & 1 : winding);
/*#*/ } // !options.nativeContains
},
_hitTest: function(point, options) {