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Move calculations of values to where they are needed.

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This commit is contained in:
Jürg Lehni 2013-06-17 08:22:28 -07:00
parent 5ff990a84a
commit be6bbb802d
1 changed files with 7 additions and 6 deletions
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13
src/path/Curve.js
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@ -807,11 +807,6 @@ statics: {
*/
getCurvatureAt: function(offset, isParameter) {
var values = this.getValues(),
// First derivative at offset/parameter
dt = Curve.evaluate(values, offset, isParameter, 1),
// Second derivative at offset/parameter
d2t = Curve.evaluate(values, offset, isParameter, 3),
dx = dt.x, dy = dt.y, d2x = d2t.x, d2y = d2t.y,
isEnd = offset === 0 || ( isParameter )? offset === 1 :
offset === this.getLength();
//Calculate Curvature
@ -829,8 +824,14 @@ statics: {
a = line.getLength();
h = line.getDistance( point, true );
return ( 2 * h) / ( 3 * a * a );
} else
} else {
// First derivative at offset/parameter
var dt = Curve.evaluate(values, offset, isParameter, 1),
// Second derivative at offset/parameter
d2t = Curve.evaluate(values, offset, isParameter, 3),
dx = dt.x, dy = dt.y, d2x = d2t.x, d2y = d2t.y;
return ( dx*d2y - dy*d2x ) / Math.pow( dx*dx + dy*dy, 3/2 );
}
},
/**