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checkpoint trace work

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This commit is contained in:
Stewart Allen 2020-12-01 12:31:38 -05:00
commit 9945a08dbb
3 changed files with 24 additions and 16 deletions
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3
src/kiri/slicer2.js
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@ -206,6 +206,7 @@
flatoff = UTIL.numOrDefault(opt.flatoff, 0.01),
onflat = this.zFlat[znorm],
edges = opt.edges || false,
over = opt.over || false,
phash = {},
lines = [],
zScale = this.zScale,
@ -237,7 +238,7 @@
// one side of triangle is on the Z plane and 3rd is below
// drop lines with 3rd above because that leads to ambiguities
// with complex nested polygons on flat surface
if (edges || where.under.length === 1) {
if ((over && where.over.length === 1) || (!over && where.under.length === 1)) {
lines.push(makeZLine(phash, where.on[0], where.on[1], false, true));
}
} else if (where.on.length === 3) {