scratchfoundation/paper.js
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Path#arcTo(): Fix wrong constant names.

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Jürg Lehni 2011-06-14 09:32:53 +01:00
parent b4a210e113
commit 8d0bb3d2ae
1 changed files with 10 additions and 10 deletions
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20
src/path/Path.js
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@ -1774,24 +1774,24 @@ var Path = this.Path = PathItem.extend({
middle = Math.atan2(y2 - cy, x2 - cx),
extent = Math.atan2(y3 - cy, x3 - cx),
diff = middle - angle,
d90 = Math.PI, // = 90 degrees in radians
d180 = d90 * 2; // = 180 degrees in radians
d180 = Math.PI, // = 180 degrees in radians
d360 = d180 * 2; // = 360 degrees in radians
if (diff < -d90)
diff += d180;
else if (diff > d90)
diff -= d180;
if (diff < -d180)
diff += d360;
else if (diff > d180)
diff -= d360;
extent -= angle;
if (extent <= 0)
extent += d180;
extent += d360;
if (diff < 0)
extent -= d180;
extent -= d360;
var ext = Math.abs(extent),
arcSegs = ext >= d180
arcSegs = ext >= d360
? 4 : Math.ceil(ext * 2 / Math.PI),
inc = Math.min(Math.max(extent, -d180), d180) / arcSegs,
inc = Math.min(Math.max(extent, -d360), d360) / arcSegs,
z = 4 / 3 * Math.sin(inc / 2) / (1 + Math.cos(inc / 2)),
segments = [];
// TODO: Use Point#setAngle() and Point vector algebra instead?