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Fix Curve#getParameter() for straight lines.

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This commit is contained in:
Jürg Lehni 2011-04-26 12:30:58 +01:00
parent 6609dc2307
commit e8a2a786e0
1 changed files with 1 additions and 11 deletions
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12
src/path/Curve.js
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@ -352,17 +352,8 @@ var Curve = this.Curve = Base.extend({
getParameter: function(p1x, p1y, c1x, c1y, c2x, c2y, p2x, p2y,
length, start) {
if (length == 0) {
if (length == 0)
return start;
}
if (p1x == c1x && p1y == c1y && p2x == c2x && p2y == c2y) {
// Straight line, calculate directly
// t = length / lineLength:
var dx = p2x - p1x,
dy = p2y - p1y;
return Math.max(Math.min(start
+ length / Math.sqrt(dx * dx + dy * dy), 0, 1));
}
// See if we're going forward or backward, and handle cases
// differently
var forward = length > 0,
@ -382,7 +373,6 @@ var Curve = this.Curve = Base.extend({
len = 0;
if (length >= rangeLength)
return forward ? b : a;
// Iteratively calculate curve range lengths, and add them up,
// using integration precision depending on the size of the
// range. This is much faster and also more precise than not