scratchfoundation/paper.js
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Switch back to sampling winding at t = 1/4, 2/4, 3/4

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Due to curve-time clamping, this should now be OK.

Relates to #1073
This commit is contained in:
Jürg Lehni 2017-01-06 14:23:27 +01:00
parent 8ba6e19a2c
commit 50c910b03a
1 changed files with 6 additions and 7 deletions
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13
src/path/PathItem.Boolean.js
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@ -644,16 +644,15 @@ PathItem.inject(new function() {
totalLength += length; totalLength += length;
segment = segment.getNext(); segment = segment.getNext();
} while (segment && !segment._intersection && segment !== start); } while (segment && !segment._intersection && segment !== start);
// Determine winding at three points in the chain. If a winding with // Sample winding at up to three points in the chain, until a winding
// sufficient quality is found, use it. Otherwise use the winding with // with sufficient quality is found. The winding with the best quality
// the best quality. // is used otherwise.
var offsets = [0.48, 0.1, 0.9], var windingZero = { winding: 0, quality: 0 },
windingZero = { winding: 0, quality: 0 },
winding = windingZero, winding = windingZero,
tMin = /*#=*/Numerical.CURVETIME_EPSILON, tMin = /*#=*/Numerical.CURVETIME_EPSILON,
tMax = 1 - tMin; tMax = 1 - tMin;
for (var i = 0; i < offsets.length && winding.quality < 0.5; i++) { for (var i = 0; i < 3 && winding.quality < 0.5; i++) {
var length = totalLength * offsets[i]; var length = totalLength * (i + 1) / 4;
for (var j = 0, l = chain.length; j < l; j++) { for (var j = 0, l = chain.length; j < l; j++) {
var entry = chain[j], var entry = chain[j],
curveLength = entry.length; curveLength = entry.length;