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support adding fewer than numItems via auto-trim() #44

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support adding fewer than numItems via auto-trim() #44

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740a981
bump devdeps
leeoniya Aug 30, 2022
e58b06b
move constructor body to an init() helper
leeoniya Aug 30, 2022
76b2944
add auto-trim to finish()
leeoniya Aug 30, 2022
f60e558
move FlatQueue init to finish()
leeoniya Aug 30, 2022
dacca3e
bump devdeps
leeoniya Jan 14, 2023
9d64e49
esm build, bump devdeps
leeoniya Jan 17, 2023
11830cc
wip
leeoniya Apr 25, 2023
239880b
Merge branch 'leeoniya/trim2' into leeoniya/trim
leeoniya Apr 25, 2023
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add auto-trim to finish()
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@leeoniya
leeoniya committed Jan 14, 2023
commit 76b2944fb1b4cbf2ec73be054544d7041a49f4d8
23 changes: 22 additions & 1 deletion index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -106,8 +106,29 @@ export default class Flatbush {
return index;
}

trim() {
const {_boxes, _indices, _pos, minX, minY, maxX, maxY, nodeSize, ArrayType} = this;
const numItems = _pos >> 2;

this.init(numItems, nodeSize, ArrayType);

this._boxes.set(_boxes.slice(0, this._boxes.length));
this._indices.set(_indices.slice(0, this._indices.length));

this._pos = _pos;
this.minX = minX;
this.minY = minY;
this.maxX = maxX;
this.maxY = maxY;
}

finish() {
if (this._pos >> 2 !== this.numItems) {
const numAdded = this._pos >> 2;

if (numAdded < this.numItems) {
this.trim();

} else if (numAdded > this.numItems) {
throw new Error(`Added ${this._pos >> 2} items when expected ${this.numItems}.`);
}
const boxes = this._boxes;
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