Release 3D Tools v0.1.0

This commit is contained in:
2026-09-01 14:22:42 +02:00
commit b20c67c890
58 changed files with 10820 additions and 0 deletions
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import { expect, test } from "@playwright/test";
for (const path of ["/", "/deep/nested/3d/"]) {
test("inspects and transforms locally at " + path, async ({ page }) => {
const external: string[] = [];
page.on("request", (request) => {
if (!request.url().startsWith("http://127.0.0.1:4211"))
external.push(request.url());
});
await page.goto(path);
await expect(
page.getByRole("heading", {
name: "Inspect geometry without uploading it.",
}),
).toBeVisible();
await expect(page.getByText("4", { exact: true }).first()).toBeVisible();
await page.getByRole("button", { name: "Recalculate normals" }).click();
await expect(page.getByText(/vertex normals recalculated/u)).toBeVisible();
await expect(page.locator("canvas")).toBeVisible();
expect(external).toEqual([]);
});
}
test("keeps the installed application available offline", async ({
page,
context,
}) => {
await page.goto("/");
await page.evaluate(async () => navigator.serviceWorker.ready);
await page.reload();
await context.setOffline(true);
try {
await page.reload();
await expect(
page.getByRole("heading", {
name: "Inspect geometry without uploading it.",
}),
).toBeVisible();
} finally {
await context.setOffline(false);
}
});
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import { render, screen } from "@testing-library/react";
import userEvent from "@testing-library/user-event";
import { afterEach, describe, expect, it, vi } from "vitest";
import { Workbench } from "../../src/components/Workbench";
describe("3D workbench", () => {
afterEach(() => vi.restoreAllMocks());
it("keeps inspection usable when WebGL is unavailable", async () => {
vi.spyOn(HTMLCanvasElement.prototype, "getContext").mockReturnValue(null);
const user = userEvent.setup();
render(<Workbench />);
expect(screen.getByText("4", { selector: "dd" })).toBeVisible();
expect(await screen.findByText(/WebGL is unavailable/u)).toBeVisible();
await user.clear(screen.getByLabelText("Uniform scale"));
await user.type(screen.getByLabelText("Uniform scale"), "2");
await user.click(screen.getByRole("button", { name: "Apply transform" }));
expect(screen.getByText(/Transform baked/u)).toBeVisible();
});
});
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import { bytesToBase64 } from "@add-ideas/toolbox-helpers";
import { describe, expect, it } from "vitest";
import {
exportBinaryStl,
exportObj,
modelStats,
parseModel,
transformModel,
} from "../../src/core/model";
const encode = (value: string) => new TextEncoder().encode(value);
describe("bounded 3D parsing", () => {
it("triangulates OBJ polygons and resolves negative indices", () => {
const model = parseModel(
"quad.obj",
encode(
[
"o Quad",
"v 0 0 0",
"v 1 0 0",
"v 1 1 0",
"v 0 1 0",
"f -4 -3 -2 -1",
].join("\n"),
),
"OBJ",
);
expect(model.indices).toHaveLength(6);
expect(model.nodes).toEqual(["Quad"]);
expect(modelStats(model)).toMatchObject({
triangles: 2,
surfaceArea: 1,
degenerateTriangles: 0,
});
expect(exportObj(model)).toContain("f 1//1 2//2 3//3");
});
it("round-trips normalized geometry through binary STL", () => {
const source = parseModel(
"triangle.obj",
encode("v 0 0 0\nv 1 0 0\nv 0 1 0\nf 1 2 3\n"),
"OBJ",
);
const binary = exportBinaryStl(source);
const parsed = parseModel("triangle.stl", binary, "STL");
expect(parsed.indices).toHaveLength(3);
expect(modelStats(parsed).surfaceArea).toBeCloseTo(0.5);
});
it("parses ASCII and binary little-endian PLY", () => {
const ascii = parseModel(
"triangle.ply",
encode(
[
"ply",
"format ascii 1.0",
"element vertex 3",
"property float x",
"property float y",
"property float z",
"element face 1",
"property list uchar int vertex_indices",
"end_header",
"0 0 0",
"1 0 0",
"0 1 0",
"3 0 1 2",
"",
].join("\n"),
),
"PLY",
);
expect(ascii.indices).toEqual(Uint32Array.of(0, 1, 2));
const header = encode(
[
"ply",
"format binary_little_endian 1.0",
"element vertex 3",
"property float x",
"property float y",
"property float z",
"element face 1",
"property list uchar int vertex_indices",
"end_header",
"",
].join("\n"),
);
const body = new Uint8Array(36 + 13);
const view = new DataView(body.buffer);
[0, 0, 0, 1, 0, 0, 0, 1, 0].forEach((value, index) =>
view.setFloat32(index * 4, value, true),
);
body[36] = 3;
view.setInt32(37, 0, true);
view.setInt32(41, 1, true);
view.setInt32(45, 2, true);
const binary = new Uint8Array(header.length + body.length);
binary.set(header);
binary.set(body, header.length);
expect(parseModel("triangle.ply", binary, "PLY").indices).toHaveLength(3);
});
it("parses embedded glTF and GLB geometry without external resources", () => {
const buffer = gltfBuffer();
const document = gltfDocument(
"data:application/octet-stream;base64," + bytesToBase64(buffer),
buffer.length,
);
const model = parseModel(
"triangle.gltf",
encode(JSON.stringify(document)),
"glTF",
);
expect(model.indices).toEqual(Uint32Array.of(0, 1, 2));
expect(model.materials).toEqual(["Local"]);
const glb = makeGlb(gltfDocument(undefined, buffer.length), buffer);
expect(parseModel("triangle.glb", glb, "GLB").indices).toHaveLength(3);
});
it("rejects remote glTF buffers and safely transforms normals/winding", () => {
const remote = gltfDocument("https://example.invalid/model.bin", 42);
expect(() =>
parseModel("remote.gltf", encode(JSON.stringify(remote)), "glTF"),
).toThrow(/External glTF buffer URLs/u);
const model = parseModel(
"triangle.obj",
encode("v 0 0 0\nv 1 0 0\nv 0 1 0\nf 1 2 3\n"),
"OBJ",
);
const transformed = transformModel(model, {
translate: [1, 2, 3],
rotate: [0, 0, 90],
scale: -2,
});
expect(modelStats(transformed).surfaceArea).toBeCloseTo(2);
expect(transformed.indices).toEqual(Uint32Array.of(0, 2, 1));
});
});
function gltfBuffer(): Uint8Array {
const output = new Uint8Array(44);
const view = new DataView(output.buffer);
[0, 0, 0, 1, 0, 0, 0, 1, 0].forEach((value, index) =>
view.setFloat32(index * 4, value, true),
);
view.setUint16(36, 0, true);
view.setUint16(38, 1, true);
view.setUint16(40, 2, true);
return output;
}
function gltfDocument(uri: string | undefined, length: number) {
return {
asset: { version: "2.0" },
buffers: [{ ...(uri ? { uri } : {}), byteLength: length }],
bufferViews: [
{ buffer: 0, byteOffset: 0, byteLength: 36 },
{ buffer: 0, byteOffset: 36, byteLength: 6 },
],
accessors: [
{ bufferView: 0, componentType: 5126, count: 3, type: "VEC3" },
{ bufferView: 1, componentType: 5123, count: 3, type: "SCALAR" },
],
materials: [{ name: "Local" }],
meshes: [
{
primitives: [{ attributes: { POSITION: 0 }, indices: 1, material: 0 }],
},
],
nodes: [{ name: "Triangle", mesh: 0 }],
};
}
function makeGlb(document: object, binary: Uint8Array): Uint8Array {
const rawJson = encode(JSON.stringify(document));
const jsonLength = Math.ceil(rawJson.length / 4) * 4;
const binaryLength = Math.ceil(binary.length / 4) * 4;
const output = new Uint8Array(12 + 8 + jsonLength + 8 + binaryLength);
const view = new DataView(output.buffer);
view.setUint32(0, 0x46546c67, true);
view.setUint32(4, 2, true);
view.setUint32(8, output.length, true);
view.setUint32(12, jsonLength, true);
view.setUint32(16, 0x4e4f534a, true);
output.fill(0x20, 20, 20 + jsonLength);
output.set(rawJson, 20);
const binaryHeader = 20 + jsonLength;
view.setUint32(binaryHeader, binaryLength, true);
view.setUint32(binaryHeader + 4, 0x004e4942, true);
output.set(binary, binaryHeader + 8);
return output;
}