377 lines
13 KiB
JavaScript
377 lines
13 KiB
JavaScript
import { Loader, FileLoader, Group, Mesh, BufferGeometry, Vector3, Quaternion, BufferAttribute, MeshBasicMaterial, DoubleSide, RawShaderMaterial, TextureLoader } from "three";
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import { unzipSync, strFromU8 } from "fflate";
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class TiltLoader extends Loader {
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load(url, onLoad, onProgress, onError) {
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const scope = this;
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const loader = new FileLoader(this.manager);
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loader.setPath(this.path);
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loader.setResponseType("arraybuffer");
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loader.setWithCredentials(this.withCredentials);
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loader.load(
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url,
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function(buffer) {
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try {
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onLoad(scope.parse(buffer));
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} catch (e) {
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if (onError) {
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onError(e);
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} else {
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console.error(e);
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}
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scope.manager.itemError(url);
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}
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},
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onProgress,
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onError
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);
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}
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parse(buffer) {
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const group = new Group();
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const zip = unzipSync(new Uint8Array(buffer.slice(16)));
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const metadata = JSON.parse(strFromU8(zip["metadata.json"]));
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const data = new DataView(zip["data.sketch"].buffer);
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const num_strokes = data.getInt32(16, true);
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const brushes = {};
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let offset = 20;
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for (let i = 0; i < num_strokes; i++) {
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const brush_index = data.getInt32(offset, true);
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const brush_color = [
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data.getFloat32(offset + 4, true),
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data.getFloat32(offset + 8, true),
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data.getFloat32(offset + 12, true),
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data.getFloat32(offset + 16, true)
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];
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const brush_size = data.getFloat32(offset + 20, true);
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const stroke_mask = data.getUint32(offset + 24, true);
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const controlpoint_mask = data.getUint32(offset + 28, true);
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let offset_stroke_mask = 0;
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let offset_controlpoint_mask = 0;
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for (let j = 0; j < 4; j++) {
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const byte = 1 << j;
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if ((stroke_mask & byte) > 0)
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offset_stroke_mask += 4;
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if ((controlpoint_mask & byte) > 0)
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offset_controlpoint_mask += 4;
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}
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offset = offset + 28 + offset_stroke_mask + 4;
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const num_control_points = data.getInt32(offset, true);
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const positions = new Float32Array(num_control_points * 3);
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const quaternions = new Float32Array(num_control_points * 4);
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offset = offset + 4;
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for (let j = 0, k = 0; j < positions.length; j += 3, k += 4) {
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positions[j + 0] = data.getFloat32(offset + 0, true);
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positions[j + 1] = data.getFloat32(offset + 4, true);
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positions[j + 2] = data.getFloat32(offset + 8, true);
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quaternions[k + 0] = data.getFloat32(offset + 12, true);
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quaternions[k + 1] = data.getFloat32(offset + 16, true);
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quaternions[k + 2] = data.getFloat32(offset + 20, true);
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quaternions[k + 3] = data.getFloat32(offset + 24, true);
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offset = offset + 28 + offset_controlpoint_mask;
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}
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if (brush_index in brushes === false) {
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brushes[brush_index] = [];
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}
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brushes[brush_index].push([positions, quaternions, brush_size, brush_color]);
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}
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for (const brush_index in brushes) {
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const geometry = new StrokeGeometry(brushes[brush_index]);
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const material = getMaterial(metadata.BrushIndex[brush_index]);
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group.add(new Mesh(geometry, material));
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}
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return group;
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}
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}
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class StrokeGeometry extends BufferGeometry {
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constructor(strokes) {
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super();
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const vertices = [];
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const colors = [];
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const uvs = [];
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const position = new Vector3();
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const prevPosition = new Vector3();
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const quaternion = new Quaternion();
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const prevQuaternion = new Quaternion();
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const vector1 = new Vector3();
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const vector2 = new Vector3();
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const vector3 = new Vector3();
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const vector4 = new Vector3();
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for (const k in strokes) {
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const stroke = strokes[k];
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const positions = stroke[0];
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const quaternions = stroke[1];
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const size = stroke[2];
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const color = stroke[3];
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prevPosition.fromArray(positions, 0);
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prevQuaternion.fromArray(quaternions, 0);
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for (let i = 3, j = 4, l = positions.length; i < l; i += 3, j += 4) {
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position.fromArray(positions, i);
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quaternion.fromArray(quaternions, j);
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vector1.set(-size, 0, 0);
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vector1.applyQuaternion(quaternion);
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vector1.add(position);
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vector2.set(size, 0, 0);
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vector2.applyQuaternion(quaternion);
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vector2.add(position);
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vector3.set(size, 0, 0);
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vector3.applyQuaternion(prevQuaternion);
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vector3.add(prevPosition);
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vector4.set(-size, 0, 0);
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vector4.applyQuaternion(prevQuaternion);
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vector4.add(prevPosition);
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vertices.push(vector1.x, vector1.y, -vector1.z);
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vertices.push(vector2.x, vector2.y, -vector2.z);
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vertices.push(vector4.x, vector4.y, -vector4.z);
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vertices.push(vector2.x, vector2.y, -vector2.z);
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vertices.push(vector3.x, vector3.y, -vector3.z);
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vertices.push(vector4.x, vector4.y, -vector4.z);
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prevPosition.copy(position);
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prevQuaternion.copy(quaternion);
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colors.push(...color);
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colors.push(...color);
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colors.push(...color);
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colors.push(...color);
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colors.push(...color);
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colors.push(...color);
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const p1 = i / l;
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const p2 = (i - 3) / l;
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uvs.push(p1, 0);
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uvs.push(p1, 1);
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uvs.push(p2, 0);
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uvs.push(p1, 1);
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uvs.push(p2, 1);
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uvs.push(p2, 0);
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}
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}
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this.setAttribute("position", new BufferAttribute(new Float32Array(vertices), 3));
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this.setAttribute("color", new BufferAttribute(new Float32Array(colors), 4));
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this.setAttribute("uv", new BufferAttribute(new Float32Array(uvs), 2));
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}
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}
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const BRUSH_LIST_ARRAY = {
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"89d104cd-d012-426b-b5b3-bbaee63ac43c": "Bubbles",
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"700f3aa8-9a7c-2384-8b8a-ea028905dd8c": "CelVinyl",
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"0f0ff7b2-a677-45eb-a7d6-0cd7206f4816": "ChromaticWave",
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"1161af82-50cf-47db-9706-0c3576d43c43": "CoarseBristles",
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"79168f10-6961-464a-8be1-57ed364c5600": "CoarseBristlesSingleSided",
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"1caa6d7d-f015-3f54-3a4b-8b5354d39f81": "Comet",
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"c8313697-2563-47fc-832e-290f4c04b901": "DiamondHull",
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"4391aaaa-df73-4396-9e33-31e4e4930b27": "Disco",
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"d1d991f2-e7a0-4cf1-b328-f57e915e6260": "DotMarker",
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"6a1cf9f9-032c-45ec-9b1d-a6680bee30f7": "Dots",
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"0d3889f3-3ede-470c-8af4-f44813306126": "DoubleTaperedFlat",
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"0d3889f3-3ede-470c-8af4-de4813306126": "DoubleTaperedMarker",
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"d0262945-853c-4481-9cbd-88586bed93cb": "DuctTape",
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"3ca16e2f-bdcd-4da2-8631-dcef342f40f1": "DuctTapeSingleSided",
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"f6e85de3-6dcc-4e7f-87fd-cee8c3d25d51": "Electricity",
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"02ffb866-7fb2-4d15-b761-1012cefb1360": "Embers",
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"cb92b597-94ca-4255-b017-0e3f42f12f9e": "Fire",
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"2d35bcf0-e4d8-452c-97b1-3311be063130": "Flat",
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"55303bc4-c749-4a72-98d9-d23e68e76e18": "FlatDeprecated",
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"280c0a7a-aad8-416c-a7d2-df63d129ca70": "FlatSingleSided",
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"cf019139-d41c-4eb0-a1d0-5cf54b0a42f3": "Highlighter",
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"6a1cf9f9-032c-45ec-9b6e-a6680bee32e9": "HyperGrid",
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"dce872c2-7b49-4684-b59b-c45387949c5c": "Hypercolor",
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"e8ef32b1-baa8-460a-9c2c-9cf8506794f5": "HypercolorSingleSided",
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"2f212815-f4d3-c1a4-681a-feeaf9c6dc37": "Icing",
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"f5c336cf-5108-4b40-ade9-c687504385ab": "Ink",
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"c0012095-3ffd-4040-8ee1-fc180d346eaa": "InkSingleSided",
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"4a76a27a-44d8-4bfe-9a8c-713749a499b0": "Leaves",
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"ea19de07-d0c0-4484-9198-18489a3c1487": "LeavesSingleSided",
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"2241cd32-8ba2-48a5-9ee7-2caef7e9ed62": "Light",
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"4391aaaa-df81-4396-9e33-31e4e4930b27": "LightWire",
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"d381e0f5-3def-4a0d-8853-31e9200bcbda": "Lofted",
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"429ed64a-4e97-4466-84d3-145a861ef684": "Marker",
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"79348357-432d-4746-8e29-0e25c112e3aa": "MatteHull",
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"b2ffef01-eaaa-4ab5-aa64-95a2c4f5dbc6": "NeonPulse",
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"f72ec0e7-a844-4e38-82e3-140c44772699": "OilPaint",
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"c515dad7-4393-4681-81ad-162ef052241b": "OilPaintSingleSided",
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"f1114e2e-eb8d-4fde-915a-6e653b54e9f5": "Paper",
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"759f1ebd-20cd-4720-8d41-234e0da63716": "PaperSingleSided",
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"e0abbc80-0f80-e854-4970-8924a0863dcc": "Petal",
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"c33714d1-b2f9-412e-bd50-1884c9d46336": "Plasma",
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"ad1ad437-76e2-450d-a23a-e17f8310b960": "Rainbow",
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"faaa4d44-fcfb-4177-96be-753ac0421ba3": "ShinyHull",
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"70d79cca-b159-4f35-990c-f02193947fe8": "Smoke",
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"d902ed8b-d0d1-476c-a8de-878a79e3a34c": "Snow",
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"accb32f5-4509-454f-93f8-1df3fd31df1b": "SoftHighlighter",
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"cf7f0059-7aeb-53a4-2b67-c83d863a9ffa": "Spikes",
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"8dc4a70c-d558-4efd-a5ed-d4e860f40dc3": "Splatter",
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"7a1c8107-50c5-4b70-9a39-421576d6617e": "SplatterSingleSided",
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"0eb4db27-3f82-408d-b5a1-19ebd7d5b711": "Stars",
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"44bb800a-fbc3-4592-8426-94ecb05ddec3": "Streamers",
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"0077f88c-d93a-42f3-b59b-b31c50cdb414": "Taffy",
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"b468c1fb-f254-41ed-8ec9-57030bc5660c": "TaperedFlat",
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"c8ccb53d-ae13-45ef-8afb-b730d81394eb": "TaperedFlatSingleSided",
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"d90c6ad8-af0f-4b54-b422-e0f92abe1b3c": "TaperedMarker",
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"1a26b8c0-8a07-4f8a-9fac-d2ef36e0cad0": "TaperedMarker_Flat",
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"75b32cf0-fdd6-4d89-a64b-e2a00b247b0f": "ThickPaint",
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"fdf0326a-c0d1-4fed-b101-9db0ff6d071f": "ThickPaintSingleSided",
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"4391385a-df73-4396-9e33-31e4e4930b27": "Toon",
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"a8fea537-da7c-4d4b-817f-24f074725d6d": "UnlitHull",
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"d229d335-c334-495a-a801-660ac8a87360": "VelvetInk",
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"10201aa3-ebc2-42d8-84b7-2e63f6eeb8ab": "Waveform",
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"b67c0e81-ce6d-40a8-aeb0-ef036b081aa3": "WetPaint",
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"dea67637-cd1a-27e4-c9b1-52f4bbcb84e5": "WetPaintSingleSided",
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"5347acf0-a8e2-47b6-8346-30c70719d763": "WigglyGraphite",
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"e814fef1-97fd-7194-4a2f-50c2bb918be2": "WigglyGraphiteSingleSided",
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"4391385a-cf83-4396-9e33-31e4e4930b27": "Wire"
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};
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const common = {
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colors: {
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BloomColor: `
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vec3 BloomColor(vec3 color, float gain) {
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// Guarantee that there's at least a little bit of all 3 channels.
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// This makes fully-saturated strokes (which only have 2 non-zero
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// color channels) eventually clip to white rather than to a secondary.
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float cmin = length(color.rgb) * .05;
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color.rgb = max(color.rgb, vec3(cmin, cmin, cmin));
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// If we try to remove this pow() from .a, it brightens up
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// pressure-sensitive strokes; looks better as-is.
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color = pow(color, vec3(2.2));
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color.rgb *= 2. * exp(gain * 10.);
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return color;
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}
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`,
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LinearToSrgb: `
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vec3 LinearToSrgb(vec3 color) {
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// Approximation http://chilliant.blogspot.com/2012/08/srgb-approximations-for-hlsl.html
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vec3 linearColor = color.rgb;
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vec3 S1 = sqrt(linearColor);
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vec3 S2 = sqrt(S1);
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vec3 S3 = sqrt(S2);
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color.rgb = 0.662002687 * S1 + 0.684122060 * S2 - 0.323583601 * S3 - 0.0225411470 * linearColor;
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return color;
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}
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`,
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hsv: `
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// uniform sampler2D lookupTex;
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vec4 lookup(vec4 textureColor) {
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return textureColor;
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}
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vec3 lookup(vec3 textureColor) {
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return textureColor;
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}
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vec3 hsv2rgb( vec3 hsv ) {
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vec3 rgb = clamp( abs(mod(hsv.x*6.0+vec3(0.0,4.0,2.0),6.0)-3.0)-1.0, 0.0, 1.0 );
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return hsv.z * mix( vec3(1.0), rgb, hsv.y);
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}
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vec3 rgb2hsv( vec3 rgb ) {
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vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);
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vec4 p = mix(vec4(rgb.bg, K.wz), vec4(rgb.gb, K.xy), step(rgb.b, rgb.g));
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vec4 q = mix(vec4(p.xyw, rgb.r), vec4(rgb.r, p.yzx), step(p.x, rgb.r));
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float d = q.x - min(q.w, q.y);
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float e = 1.0e-10;
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return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);
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}
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`,
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SrgbToLinear: `
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vec3 SrgbToLinear(vec3 color) {
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// Approximation http://chilliant.blogspot.com/2012/08/srgb-approximations-for-hlsl.html
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vec3 sRGB = color.rgb;
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color.rgb = sRGB * (sRGB * (sRGB * 0.305306011 + 0.682171111) + 0.012522878);
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return color;
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}
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`
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}
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};
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const shaders = () => ({
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Light: {
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uniforms: {
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mainTex: {
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value: new TextureLoader().setPath("./textures/tiltbrush/").loader.load("Light.webp")
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},
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alphaTest: { value: 0.067 },
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emission_gain: { value: 0.45 },
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alpha: { value: 1 }
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},
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vertexShader: `
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precision highp float;
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precision highp int;
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attribute vec2 uv;
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attribute vec4 color;
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attribute vec3 position;
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uniform mat4 modelMatrix;
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uniform mat4 modelViewMatrix;
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uniform mat4 projectionMatrix;
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uniform mat4 viewMatrix;
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uniform mat3 normalMatrix;
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uniform vec3 cameraPosition;
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varying vec2 vUv;
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varying vec3 vColor;
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${common.colors.LinearToSrgb}
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${common.colors.hsv}
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void main() {
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vUv = uv;
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vColor = lookup(color.rgb);
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vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );
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gl_Position = projectionMatrix * mvPosition;
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}
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`,
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fragmentShader: `
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precision highp float;
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precision highp int;
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uniform float emission_gain;
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uniform sampler2D mainTex;
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uniform float alphaTest;
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varying vec2 vUv;
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varying vec3 vColor;
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${common.colors.BloomColor}
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${common.colors.SrgbToLinear}
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void main(){
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vec4 col = texture2D(mainTex, vUv);
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vec3 color = vColor;
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color = BloomColor(color, emission_gain);
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color = color * col.rgb;
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color = color * col.a;
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color = SrgbToLinear(color);
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gl_FragColor = vec4(color, 1.0);
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}
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`,
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side: 2,
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transparent: true,
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depthFunc: 2,
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depthWrite: true,
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depthTest: false,
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blending: 5,
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blendDst: 201,
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blendDstAlpha: 201,
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blendEquation: 100,
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blendEquationAlpha: 100,
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blendSrc: 201,
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blendSrcAlpha: 201
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}
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});
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function getMaterial(GUID) {
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const name = BRUSH_LIST_ARRAY[GUID];
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switch (name) {
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case "Light":
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return new RawShaderMaterial(shaders().Light);
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default:
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return new MeshBasicMaterial({ vertexColors: true, side: DoubleSide });
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}
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}
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export {
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TiltLoader
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};
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//# sourceMappingURL=TiltLoader.js.map
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