scratchfoundation/paper.js
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Clean up Path#setSegments and begin moving of logic to keep Path#curves in sync away from Path#getCurves() to Path#setClosed(). Requires more work, e.g. Path#_add().

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This commit is contained in:
Jürg Lehni 2011-04-30 23:44:37 +01:00
parent 6cca355e20
commit 6bbfd55240
1 changed files with 31 additions and 19 deletions
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50
src/path/Path.js
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@ -36,14 +36,16 @@ var Path = this.Path = PathItem.extend({
},
setSegments: function(segments) {
var length = segments.length;
if (!this._segments) {
this._segments = [];
} else {
this.setSelected(false);
this._segments.length = 0;
// Make sure new curves are calculated next time we call getCurves()
if (this._curves)
this._curves = null;
}
for(var i = 0; i < length; i++)
for(var i = 0, l = segments.length; i < l; i++)
this._add(Segment.read(segments, i, 1));
},
@ -51,22 +53,16 @@ var Path = this.Path = PathItem.extend({
* The curves contained within the path.
*/
getCurves: function() {
var length = this._segments.length;
// Reduce length by one if it's an open path:
if (!this._closed && length > 0)
length--;
var curves = this._curves = this._curves || new Array(length);
curves.length = length;
for (var i = 0; i < length; i++) {
var curve = curves[i];
if (!curve) {
curve = curves[i] = Curve.create(this, i);
} else {
// Make sure index is kept up to date.
curve._setIndex(i);
}
if (!this._curves) {
var length = this._segments.length;
// Reduce length by one if it's an open path:
if (!this._closed && length > 0)
length--;
this._curves = new Array(length);
for (var i = 0; i < length; i++)
this._curves[i] = Curve.create(this, i);
}
return curves;
return this._curves;
},
getClosed: function() {
@ -74,8 +70,22 @@ var Path = this.Path = PathItem.extend({
},
setClosed: function(closed) {
this._closed = closed;
// On-the-fly conversion to boolean:
if (this._closed != (closed = !!closed)) {
this._closed = closed;
// Update _curves length
if (this._curves) {
var length = this._segments.length,
i;
// Reduce length by one if it's an open path:
if (!closed && length > 0)
length--;
this._curves.length = length;
// If we were closing this path, we need to add a new curve now
if (closed)
this._curves[i = length - 1] = Curve.create(this, i);
}
}
},
getFirstSegment: function() {
@ -126,11 +136,13 @@ var Path = this.Path = PathItem.extend({
return segment;
},
// TODO: Support multiple segments?
add: function(segment) {
segment = Segment.read(arguments);
return segment ? this._add(segment) : null;
},
// TODO: Support multiple segments?
insert: function(index, segment) {
segment = Segment.read(arguments, 1);
return segment ? this._add(segment, index) : null;