scratchfoundation/paper.js
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Sample winding at t = 0.5 before trying 0.25 at 0.75

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This partly reverts commit 50c910b03a.
This commit is contained in:
Jürg Lehni 2017-01-10 13:34:50 +01:00
parent 2145efb29b
commit acd6b143db
1 changed files with 7 additions and 6 deletions
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13
src/path/PathItem.Boolean.js
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@ -644,15 +644,16 @@ PathItem.inject(new function() {
totalLength += length;
segment = segment.getNext();
} while (segment && !segment._intersection && segment !== start);
// Sample winding at up to three points in the chain, until a winding
// with sufficient quality is found. The winding with the best quality
// is used otherwise.
var windingZero = { winding: 0, quality: 0 },
// Determine winding at three points in the chain. If a winding with
// sufficient quality is found, use it. Otherwise use the winding with
// the best quality.
var offsets = [0.5, 0.25, 0.75],
windingZero = { winding: 0, quality: 0 },
winding = windingZero,
tMin = /*#=*/Numerical.CURVETIME_EPSILON,
tMax = 1 - tMin;
for (var i = 0; i < 3 && winding.quality < 0.5; i++) {
var length = totalLength * (i + 1) / 4;
for (var i = 0; i < offsets.length && winding.quality < 0.5; i++) {
var length = totalLength * offsets[i];
for (var j = 0, l = chain.length; j < l; j++) {
var entry = chain[j],
curveLength = entry.length;