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alter depth first paths to use proper poly2poly parameter

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This commit is contained in:
Stewart Allen 2020-11-02 11:59:12 -05:00
commit 3b07a089dd
2 changed files with 22 additions and 8 deletions
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18
src/geo/polygons.js
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@ -441,6 +441,10 @@
* @returns {Polygon[]} last offset
*/
function expand(polys, distance, z, out, count, distance2, collector, min) {
// return offset(polys, [distance, distance2 || distance], {
// z, outs: out, call: collector, minArea: min, count, flat: true
// });
// prepare alignments for clipper lib
alignWindings(polys);
polys.forEach(function(poly) {
@ -491,6 +495,7 @@
let orig = polys,
opts = opt || {},
count = numOrDefault(opt.count, 1),
depth = numOrDefault(opt.depth, 0),
clean = opts.clean !== false,
simple = opts.simple !== false,
@ -538,12 +543,21 @@
opt.outs = opt.outs || [];
// store polys in accumulator
opt.outs.append(polys, opt.flat);
if (opt.count > 1) {
// callback for expand() compatibility
if (opt.call) {
opt.call(polys, count);
}
// check for more offsets
if (count > 1) {
// decrement count, increment depth
opt.count--;
opt.count = count - 1;
opt.depth = depth + 1;
// call next offset
offset(polys, dist, opt);
// } else if (count === 0) {
// // depth = 0 means offset until failure
// opt.depth = depth + 1;
// offset(polys, dist, opt);
}
}