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Refactor code structure for improved readability and maintainability

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CNCKitchen
2026-03-18 10:52:39 +01:00
parent f88504696d
commit adab788c74
5 changed files with 119 additions and 19 deletions
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js/subdivision.js
+11 -4
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@@ -60,7 +60,7 @@ export async function subdivide(geometry, maxEdgeLength, onProgress, faceWeights
if (!changed || safetyCapHit) break;
}
return { geometry: toNonIndexed(positions, normals, weights, currentIndices), safetyCapHit };
return { geometry: toNonIndexed(positions, normals, weights, currentIndices, currentFaceExcluded), safetyCapHit };
}
// ── One subdivision pass ──────────────────────────────────────────────────────
@@ -295,13 +295,20 @@ function toIndexed(geometry, nonIndexedWeights = null) {
// ── Indexed → non-indexed ────────────────────────────────────────────────────
function toNonIndexed(positions, normals, weights, indices) {
function toNonIndexed(positions, normals, weights, indices, faceExcluded = null) {
const triCount = indices.length / 3;
const posArray = new Float32Array(triCount * 9);
const nrmArray = new Float32Array(triCount * 9);
const wgtArray = weights ? new Float32Array(triCount * 3) : null;
const wgtArray = (faceExcluded || weights) ? new Float32Array(triCount * 3) : null;
for (let t = 0; t < triCount; t++) {
// Use the binary faceExcluded flag (tracked accurately through subdivision)
// rather than the interpolated weights[vidx]. The interpolated weights can
// be pushed to 1.0 on included faces via the MAX-merge in toIndexed: if an
// included face shares edges with TWO excluded neighbours all three of its
// vertices are merged to weight 1.0, making its average exceed the 0.99
// threshold and falsely excluding it from displacement.
const faceW = faceExcluded ? (faceExcluded[t] ? 1.0 : 0.0) : null;
for (let v = 0; v < 3; v++) {
const vidx = indices[t * 3 + v];
posArray[t * 9 + v * 3] = positions[vidx * 3];
@@ -312,7 +319,7 @@ function toNonIndexed(positions, normals, weights, indices) {
nrmArray[t * 9 + v * 3 + 1] = normals[vidx * 3 + 1];
nrmArray[t * 9 + v * 3 + 2] = normals[vidx * 3 + 2];
if (wgtArray) wgtArray[t * 3 + v] = weights[vidx];
if (wgtArray) wgtArray[t * 3 + v] = faceW !== null ? faceW : weights[vidx];
}
}