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Add clay pieces, masking, and topology editing to sculpt

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Add pastel presets, piece selection and colors, mask brushes, subdivision and conservative decimation with bounded worker operations and mixed undo history.

Amp-Thread-ID: https://ampcode.com/threads/T-01a0b4b4-202c-73f1-984d-9a55c88f9c83
Co-authored-by: Heaust Azure <heaust.azure@gmail.com>
This commit is contained in:
Amp
2026-10-01 07:55:48 +00:00
co-authored by heaust
parent d930d8172f
commit d279ec4123
21 changed files with 2564 additions and 131 deletions
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server/web/assets/sculpt/mesh.js
+47 -22
View File
@@ -1,5 +1,51 @@
import { unit } from "./math.js";
export function buildMesh(positions, indices, level = 5, masks) {
positions =
positions instanceof Float32Array
? positions
: new Float32Array(positions.flat ? positions.flat(Infinity) : positions);
indices =
indices instanceof Uint32Array
? indices
: new Uint32Array(indices.flat ? indices.flat(Infinity) : indices);
if (positions.length % 3 || indices.length % 3)
throw new Error(
"Mesh positions and indices must contain complete triples.",
);
const vertexCount = positions.length / 3;
const incident = Array.from({ length: vertexCount }, () => []);
const neighbors = Array.from({ length: vertexCount }, () => new Set());
for (let f = 0; f < indices.length / 3; f++) {
const face = indices.subarray(f * 3, f * 3 + 3);
for (const v of face) {
if (v >= vertexCount) throw new Error("Mesh index is out of range.");
incident[v].push(f);
for (const other of face) if (other !== v) neighbors[v].add(other);
}
}
if (masks && masks.length !== vertexCount)
throw new Error("Mask count must match vertex count.");
const mesh = {
level,
positions,
indices,
masks:
masks instanceof Float32Array
? masks
: new Float32Array(masks || vertexCount),
normals: new Float32Array(positions.length),
faceNormals: new Float32Array(indices.length),
incident: incident.map((a) => Uint32Array.from(a)),
neighbors: neighbors.map((a) => Uint32Array.from(a)),
faceMarks: new Uint32Array(indices.length / 3),
vertexMarks: new Uint32Array(vertexCount),
generation: 0,
};
updateNormals(mesh);
return mesh;
}
export function sphere(level = 5) {
if (!Number.isInteger(level) || level < 4 || level > 6)
throw new Error("Choose a supported resolution.");
@@ -64,28 +110,7 @@ export function sphere(level = 5) {
}
const positions = new Float32Array(vertices.flat());
const indices = new Uint32Array(faces.flat());
const incident = Array.from({ length: vertices.length }, () => []);
const neighbors = Array.from({ length: vertices.length }, () => new Set());
faces.forEach((face, f) =>
face.forEach((v) => {
incident[v].push(f);
for (const other of face) if (other !== v) neighbors[v].add(other);
}),
);
const mesh = {
level,
positions,
indices,
normals: new Float32Array(positions.length),
faceNormals: new Float32Array(indices.length),
incident: incident.map((a) => Uint32Array.from(a)),
neighbors: neighbors.map((a) => Uint32Array.from(a)),
};
mesh.faceMarks = new Uint32Array(faces.length);
mesh.vertexMarks = new Uint32Array(vertices.length);
mesh.generation = 0;
updateNormals(mesh);
return mesh;
return buildMesh(positions, indices, level);
}
// Include the unchanged incident faces when recomputing a boundary vertex normal.