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async-ify fdm slicing layer diffs for ~3x speedup

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This commit is contained in:
Stewart Allen 2026-01-14 17:03:26 -05:00
commit bdf3de7b04
3 changed files with 106 additions and 38 deletions
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33
src/kiri/mode/fdm/work/slice.js
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@ -672,14 +672,22 @@ export function sliceOne(settings, widget, onupdate, ondone) {
async function processLayerDiffs(plo, phi) {
let div = divide(plo, phi, [ 0.9, 0.05, 0.05 ]);
// boolean diff layers to detect bridges and flats
let promises = [];
profileStart("delta");
forSlices(div[0].lo, div[1].hi, slice => {
let params = slice.params || process;
let solidMinArea = params.sliceSolidMinArea;
let sliceMinThick = params.sliceSolidMinThick;
let sliceFillGrow = params.sliceFillGrow;
layerDiff(slice, { area: solidMinArea, grow: sliceFillGrow, thick: sliceMinThick });
let p = layerDiff(slice, {
area: solidMinArea,
grow: sliceFillGrow,
thick: sliceMinThick,
async: true
});
promises.push(p);
}, "layer deltas");
await Promise.all(promises);
profileEnd();
// project bridges and flats up and down into part
profileStart("delta-project");
@ -1443,9 +1451,26 @@ export function layerDiff(slice, options = {}) {
let newBridges = [];
let newFlats = [];
POLY.subtract(topInner, downInner, newBridges, newFlats, slice.z, area, {
wasm: true
});
if (options.async) {
return self.kiri_worker.minions
.subtract({
a: topInner, b: downInner,
outA: newBridges, outB: newFlats,
area, wasm: true, z: slice.z,
})
.then(() => {
layerDiffDone({ slice, bridges, flats, newBridges, newFlats, options });
});
} else {
POLY.subtract(topInner, downInner, newBridges, newFlats, slice.z, area, {
wasm: true
});
layerDiffDone({ slice, bridges, flats, newBridges, newFlats, options });
}
}
function layerDiffDone({ slice, bridges, flats, newBridges, newFlats, options }) {
const { sla, grow, area, thick } = options;
// console.log(slice.z, { newBridges, newFlats });
newBridges = newBridges.filter(p => p.areaDeep() >= area && p.thickness(true) >= thick);