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More optimisations in Path#getBounds().

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This commit is contained in:
Jürg Lehni 2011-02-22 10:35:48 +01:00
parent a08e3dc366
commit 614f9998de
1 changed files with 5 additions and 3 deletions
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8
src/path/Path.js
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@ -81,6 +81,7 @@ Path = PathItem.extend({
if (b == 0)
continue;
var t = -c / b;
// Test for good root and add to bounds if good (same below)
if (0 < t && t < 1)
add(null, t);
continue;
@ -89,11 +90,12 @@ Path = PathItem.extend({
var b2ac = b * b - 4 * a * c;
if (b2ac < 0)
continue;
var sqrt = Math.sqrt(b2ac), f = 1 / (a * -2);
var t1 = (b - sqrt) * f;
var sqrt = Math.sqrt(b2ac),
f = 1 / (a * -2),
t1 = (b - sqrt) * f,
t2 = (b + sqrt) * f;
if (0 < t1 && t1 < 1)
add(null, t1);
var t2 = (b + sqrt) * f;
if (0 < t2 && t2 < 1)
add(null, t2);
}