Function sharedFaceCount

js/decimation.js:324–333

(faces, vfHead, slotFace, slotNext, v1, v2)

function buildLinkedAdj(faces, faceCount, vertCount) {
  const S        = faceCount * 3;
  const vfHead   = new Int32Array(vertCount).fill(-1);
  const slotFace = new Int32Array(S);
  const slotVert = new Int32Array(S);
  const slotNext = new Int32Array(S).fill(-1);
  const slotPrev = new Int32Array(S).fill(-1);
  const faceSlot = new Int32Array(S).fill(-1);
  for (let f = 0; f < faceCount; f++) {
    if (faces[f * 3] < 0) continue;
    for (let k = 0; k < 3; k++) {
      const v = faces[f * 3 + k];
      const s = f * 3 + k;
      slotFace[s] = f;
      slotVert[s] = v;