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Implement the various bounds getter on Curve too, using caching and the new static Path.get*Bounds methods.

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This commit is contained in:
Jürg Lehni 2012-12-18 14:35:21 +01:00
parent 4de5f30f72
commit 29a2bc781b
1 changed files with 19 additions and 1 deletions
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20
src/path/Curve.js
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@ -65,6 +65,7 @@ var Curve = this.Curve = Base.extend(/** @lends Curve# */{
_changed: function() { _changed: function() {
// Clear cached values. // Clear cached values.
delete this._length; delete this._length;
delete this._bounds;
}, },
/** /**
@ -549,7 +550,24 @@ var Curve = this.Curve = Base.extend(/** @lends Curve# */{
return Math.max(ux * ux, vx * vx) + Math.max(uy * uy, vy * vy) < 1; return Math.max(ux * ux, vx * vx) + Math.max(uy * uy, vy * vy) < 1;
} }
} }
}, new function() { // Scope for methods that require numerical integration }, Base.each(['getBounds', 'getStrokeBounds', 'getHandleBounds', 'getRoughBounds'],
function(name) {
this[name] = function() {
if (!this._bounds)
this._bounds = {};
var bounds = this._bounds[name];
if (!bounds) {
// Calculate the curve bounds by passing a segment list for the
// curve to the static Path.get*Boudns methods.
bounds = this._bounds[name] = Path[name](
[this._segment1, this._segment2], false, this._path._style);
}
return bounds.clone();
};
},
/** @lends Curve# */{
}),
new function() { // Scope for methods that require numerical integration
function getLengthIntegrand(v) { function getLengthIntegrand(v) {
// Calculate the coefficients of a Bezier derivative. // Calculate the coefficients of a Bezier derivative.