Building a Dual-Scene Fluid X-Ray Reveal Effect in Three.js

import * as THREE from "three/webgpu";

class WebGPUContext {
	constructor(container) {
		if (!!WebGPUContext.instance) {
			return WebGPUContext.instance;
		}

		this.container = container;
		this.renderer = null;
		this.canvas = null;
		this.pixelRatio = Math.min(window.devicePixelRatio, 2.0);

		WebGPUContext.instance = this;
	}

	async init() {
		this.canvas = this.#createCanvas();
		this.renderer = new THREE.WebGPURenderer({
			canvas: this.canvas,
			antialias: false,
		});

		await this.renderer.init();

		const { width, height } = this.getFullScreenDimensions();
		this.renderer.setSize(width, height);
		this.renderer.setPixelRatio(this.pixelRatio);
		this.renderer.shadowMap.enabled = false;
		this.renderer.autoClear = false;
		this.renderer.toneMapping = THREE.ACESFilmicToneMapping;
	}

	getFullScreenDimensions() {
		const el = document.createElement("div");
		Object.assign(el.style, {
			height: "100lvh",
			width: "100lvw",
			position: "absolute",
			visibility: "hidden",
		});
		document.body.appendChild(el);
		const width = el.offsetWidth;
		const height = el.offsetHeight;
		document.body.removeChild(el);
		return { width, height };
	}

	#createCanvas() {
		const canvas = document.createElement("canvas");
		canvas.style.position = "fixed";
		canvas.style.left = 0;
		canvas.style.top = 0;
		canvas.style.zIndex = 35;
		canvas.style.pointerEvents = "auto";
		document.body.appendChild(canvas);
		return canvas;
	}

	onResize(width, height) {
		this.pixelRatio = Math.min(window.devicePixelRatio, 2);
		this.renderer.setSize(width, height);
		this.renderer.setPixelRatio(this.pixelRatio);
	}
}

export default WebGPUContext;

import Three from "./core/Three";
import "./style.css";

document.addEventListener("DOMContentLoaded", async () => {
	const container = document.querySelector("#app");
	const three = new Three(container);
	await three.run();
	await three.scene.ready;
	document.body.classList.remove("loading");
});

import { MeshStandardNodeMaterial } from "three/webgpu";
import {
	positionLocal,
	mix,
	vec3,
	smoothstep,
	float,
	normalView,
	positionViewDirection,
	pow,
	sub,
} from "three/tsl";

export function createFresnelMaterial({
	heightMax = 1.0,
	roughness = 1.0,
	color = vec3(0.2, 0.6, 1.0),
	emissiveIntensity = 0.75,
}) {
	const material = new MeshStandardNodeMaterial({
		metalness: 0,
		roughness,
	});

	// Fresnel: bright at silhouette edges, dark facing camera
	const fresnel = pow(
		sub(float(1.0), normalView.dot(positionViewDirection.negate())),
		float(1.0),
	);

	const coreColor = vec3(0.0, 0.05, 0.1);
	const fresnelColor = mix(coreColor, color, fresnel);

	// Fade out below heightMax
	const heightFade = smoothstep(0.5, heightMax, positionLocal.y);
	const finalColor = fresnelColor.mul(heightFade);

	material.colorNode = finalColor;
	material.emissiveNode = finalColor.mul(emissiveIntensity);

	return material;
}

import * as THREE from "three/webgpu";
import { MeshBasicNodeMaterial } from "three/webgpu";
import {
	vec2,
	vec3,
	float,
	sub,
	mul,
	add,
	min,
	uv,
	texture,
	Fn,
} from "three/tsl";
import { fbm } from "../utils/fbm";

export default class FluidSim {
	constructor(width, height) {
		this.width = width;
		this.height = height;

		this.#createRenderTargets();
		this.#createFBOScene();
	}

	#createRenderTargets() {
		const opts = {
			minFilter: THREE.LinearFilter,
			magFilter: THREE.LinearFilter,
			depthBuffer: false,
			stencilBuffer: false,
		};
		this.targetA = new THREE.RenderTarget(this.width, this.height, opts);
		this.targetB = new THREE.RenderTarget(this.width, this.height, opts);

		this.prevNode = texture(this.targetA.texture);
		this.maskNode = texture(this.targetA.texture);
	}

	#createFBOScene() {
		this.fboScene = new THREE.Scene();
		this.fboCamera = new THREE.OrthographicCamera(-1, 1, 1, -1, -1, 1);

		this.inputNode = texture(new THREE.Texture());

		const material = new MeshBasicNodeMaterial();
		material.colorNode = this.#createFluidShader();

		const geo = new THREE.PlaneGeometry(2, 2);
		// Flip geometry UVs Y so render target read-back is self-consistent in WebGPU
		const uvAttr = geo.attributes.uv;
		for (let i = 0; i < uvAttr.count; i++) {
			uvAttr.setY(i, 1.0 - uvAttr.getY(i));
		}
		this.fboQuad = new THREE.Mesh(geo, material);
		this.fboScene.add(this.fboQuad);
	}

	#createFluidShader() {
		const blendDarken = Fn(([base, blend]) => min(blend, base));

		const aspect = this.height / this.width;
		const aspectVec =
			this.width < this.height
				? vec2(1.0, 1.0 / aspect)
				: vec2(aspect, 1.0);

		return Fn(() => {
			const uvCoord = uv();
			const disp = mul(mul(fbm(mul(uvCoord, 20.0), float(4)), aspectVec), 0.01);

			// Sample previous frame with noise displacement (fluid spreading)
			const texel = this.prevNode.sample(uvCoord);
			const texel2 = this.prevNode.sample(vec2(add(uvCoord.x, disp.x), uvCoord.y));
			const texel3 = this.prevNode.sample(vec2(sub(uvCoord.x, disp.x), uvCoord.y));
			const texel4 = this.prevNode.sample(vec2(uvCoord.x, add(uvCoord.y, disp.y)));
			const texel5 = this.prevNode.sample(vec2(uvCoord.x, sub(uvCoord.y, disp.y)));

			// Take darkest of neighborhood
			const floodcolor = texel.rgb.toVar();
			floodcolor.assign(blendDarken(floodcolor, texel2.rgb));
			floodcolor.assign(blendDarken(floodcolor, texel3.rgb));
			floodcolor.assign(blendDarken(floodcolor, texel4.rgb));
			floodcolor.assign(blendDarken(floodcolor, texel5.rgb));

			// Blend with new trail input (flip Y — canvas texture has opposite Y to render targets in WebGPU)
			const flippedUV = vec2(uvCoord.x, sub(float(1.0), uvCoord.y));
			const input = this.inputNode.sample(flippedUV);
			const combined = blendDarken(floodcolor, input.rgb);

			// Fade back to white
			return min(vec3(1.0), add(combined, vec3(0.015)));
		})();
	}

	get texture() {
		return this.maskNode;
	}

	update(renderer, trailTexture) {
		this.prevNode.value = this.targetA.texture;
		this.inputNode.value = trailTexture;

		renderer.setRenderTarget(this.targetB);
		renderer.render(this.fboScene, this.fboCamera);
		renderer.setRenderTarget(null);

		// Update mask to read from the just-rendered target
		this.maskNode.value = this.targetB.texture;

		// Swap
		const temp = this.targetA;
		this.targetA = this.targetB;
		this.targetB = temp;
	}

	onResize(width, height) {
		this.width = width;
		this.height = height;
		this.targetA.setSize(width, height);
		this.targetB.setSize(width, height);
	}

	dispose() {
		this.targetA.dispose();
		this.targetB.dispose();
		this.fboQuad.material.dispose();
		this.fboQuad.geometry.dispose();
	}
}

import * as THREE from "three/webgpu";
import {
	pass,
	vec3,
	screenUV,
	time,
	float,
	sub,
	sin,
	mul,
	add,
	mix,
	dot,
	clamp,
	Fn,
} from "three/tsl";
import { mx_noise_float } from "three/tsl";
import { bloom } from "three/addons/tsl/display/BloomNode.js";

export default class PostProcessing {
	constructor(renderer, solidScene, wireScene, camera, fluidMaskNode) {
		this.pipeline = new THREE.RenderPipeline(renderer);
		this.solidScene = solidScene;
		this.wireScene = wireScene;
		this.camera = camera;
		this.fluidMaskNode = fluidMaskNode;

		this.#compose();
	}

	#compose() {
		// Render both scenes
		const solidPass = pass(this.solidScene, this.camera);
		const solidColor = solidPass.getTextureNode("output");

		const wirePass = pass(this.wireScene, this.camera);
		const wireColor = wirePass.getTextureNode("output");

		// Bloom on solid scene
		const bloomPass = bloom(solidColor.sample(screenUV), 0.4, 0.05);

		// Scan lines on bloom only (darken only)
		const scanRaw = sin(mul(screenUV.y, float(1250.0)));
		const scanDarken = clamp(scanRaw, -1.0, 0.0).mul(-0.15);
		const scanLines = sub(float(1.0), scanDarken);
		const bloomWithScanLines = bloomPass.mul(scanLines);

		// Fluid mask composites solid ↔ wire
		const fluidMask = sub(float(1.0), this.fluidMaskNode.sample(screenUV).r);
		const blended = mix(
			bloomWithScanLines,
			wireColor.sample(screenUV),
			fluidMask,
		);

		// Film grain
		const noise = mx_noise_float(
			vec3(screenUV.mul(2000.0), time.mul(20.0)),
		).mul(0.015);

		// Combine effects
		const withEffects = blended.sub(noise);

		// Slight desaturation
		const luminance = dot(withEffects, vec3(0.299, 0.587, 0.114));
		const desaturated = mix(
			vec3(luminance, luminance, luminance),
			withEffects,
			float(0.985),
		);

		const lowContrast = mix(vec3(0.0, 0.0, 0.2), desaturated, float(0.9));

		this.pipeline.outputNode = lowContrast;
	}

	render() {
		this.pipeline.render();
	}

	dispose() {
		this.pipeline.dispose();
	}
}

import * as THREE from "three/webgpu";
import { RoomEnvironment } from "three/addons/environments/RoomEnvironment.js";
import WebGPUContext from "../core/WebGPUContext";
import { CameraRig } from "../utils/CameraRig";
import InstancedModel from "../utils/InstancedModel";

export default class Scene {
	constructor() {
		this.context = new WebGPUContext();
		const { width, height } = this.context.getFullScreenDimensions();
		this.width = width;
		this.height = height;

		this.envMap = this.#createEnvironment();
		this.solidScene = this.#createScene();
		this.wireScene = this.#createScene();

		this.#createInstancedModels();
		this.#createCamera();
	}

	#createInstancedModels() {
		const solid = new InstancedModel(this.solidScene, {
			url: `${import.meta.env.BASE_URL}man_comp-transformed.glb`,
			meshName: "body",
			heightMax: 1.0,
			roughness: 1.0,
		});

		const wire = new InstancedModel(this.wireScene, {
			url: `${import.meta.env.BASE_URL}skeleton_comp-transformed.glb`,
			meshName: "skeleton",
			heightMax: 0.9,
			roughness: 0.9,
		});

		this.ready = Promise.all([solid.ready, wire.ready]);
	}

	#createEnvironment() {
		const pmremGenerator = new THREE.PMREMGenerator(this.context.renderer);
		const envMap = pmremGenerator.fromScene(new RoomEnvironment()).texture;
		pmremGenerator.dispose();
		return envMap;
	}

	#createScene() {
		const scene = new THREE.Scene();
		scene.fog = new THREE.Fog(0x000000, 1, 3);
		scene.background = new THREE.Color(0x000000);
		scene.environment = this.envMap;
		scene.environmentIntensity = 0.1;

		const light = new THREE.PointLight(0xffffff, 0.75);
		light.position.set(1, 2, 1);
		scene.add(light);

		return scene;
	}

	#createCamera() {
		this.camera = new THREE.PerspectiveCamera(
			17,
			this.width / this.height,
			0.1,
			100,
		);
		this.cameraRig = new CameraRig(this.camera);
	}

	animate(delta, elapsed) {
		this.cameraRig?.update(delta, elapsed);
	}

	onResize(width, height) {
		this.width = width;
		this.height = height;
		this.camera.aspect = width / height;
		this.camera.updateProjectionMatrix();
	}
}

@import "tailwindcss";

*,
*::after,
*::before {
	box-sizing: border-box;
}

:root {
	font-size: 12px;
	--color-text: #fff;
	--color-bg: #000;
	--color-link: #fff;
	--color-link-hover: #fff;
	--page-padding: 1.5rem;
}

body {
	margin: 0;
	color: var(--color-text);
	background-color: var(--color-bg);
	font-family: ui-monospace, monospace;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

@media (scripting: enabled) {
	.loading {
		&::before,
		&::after {
			content: "";
			position: fixed;
			z-index: 10000;
		}

		&::before {
			top: 0;
			left: 0;
			width: 100%;
			height: 100%;
			background: var(--color-bg);
		}

		&::after {
			top: 50%;
			left: 50%;
			width: 100px;
			height: 1px;
			margin: 0 0 0 -50px;
			background: var(--color-link);
			animation: loaderAnim 1.5s ease-in-out infinite alternate forwards;
		}
	}
}

@keyframes loaderAnim {
	0% {
		transform: scaleX(0);
		transform-origin: 0% 50%;
	}

	50% {
		transform: scaleX(1);
		transform-origin: 0% 50%;
	}

	50.1% {
		transform: scaleX(1);
		transform-origin: 100% 50%;
	}

	100% {
		transform: scaleX(0);
		transform-origin: 100% 50%;
	}
}

a {
	text-decoration: none;
	color: var(--color-link);
	outline: none;
	cursor: pointer;

	&:hover {
		text-decoration: underline;
		color: var(--color-link-hover);
	}

	&:focus {
		outline: none;
		background: lightgrey;

		&:not(:focus-visible) {
			background: transparent;
		}

		&:focus-visible {
			outline: 2px solid red;
			background: transparent;
		}
	}
}

.frame {
	padding: 3rem var(--page-padding) 0;
	display: grid;
	z-index: 1000;
	position: relative;
	grid-row-gap: 1rem;
	grid-column-gap: 2rem;
	pointer-events: none;
	justify-items: start;
	grid-template-columns: auto auto auto 1fr;
	grid-template-areas:
		"title title title title"
		"back archive github ..."
		"tags tags tags tags";

	a {
		pointer-events: auto;
	}

	.frame__title {
		grid-area: title;
		font-size: inherit;
		margin: 0;
	}

	.frame__back {
		grid-area: back;
		justify-self: start;
	}

	.frame__archive {
		grid-area: archive;
		justify-self: start;
	}

	.frame__github {
		grid-area: github;
	}

	.frame__tags {
		grid-area: tags;
		display: flex;
		flex-wrap: wrap;
		gap: 1rem;
	}

	@media screen and (min-width: 53em) {
		padding: var(--page-padding);
		height: 100%;
		position: fixed;
		top: 0;
		left: 0;
		width: 100%;
		grid-template-columns: auto auto auto auto 1fr;
		grid-template-rows: auto auto;
		align-content: space-between;
		grid-template-areas:
			"title back github archive ..."
			"tags tags tags tags tags";

		.frame__tags {
			align-self: end;
		}
	}
}

import * as THREE from "three/webgpu";
import { easing } from "maath";

export class CameraRig {
	constructor(camera) {
		this.camera = camera;

		this.basePos = new THREE.Vector3(1.5, 1.5, 0.55);
		this.lookAt = new THREE.Vector3(-0.52, 0.45, -0.45);

		this.camera.position.copy(this.basePos);
		this.camera.lookAt(this.lookAt);

		// Normalized mouse (0-1), exposed for MouseTrail
		this.mouseNormalized = { x: 0.5, y: 0.5 };
		// Pointer for camera (-1..1)
		this.pointer = { x: 0, y: 0 };

		this.smoothTime = 0.25;
		this.touchTime = 0;

		this.isTouch =
			window.matchMedia("(pointer: coarse)").matches || "ontouchstart" in window;
		this.isMobile = window.innerWidth < 768;

		this._targetPos = [0, 0, 0];

		if (!this.isTouch) {
			window.addEventListener("mousemove", (e) => {
				this.mouseNormalized.x = e.clientX / window.innerWidth;
				this.mouseNormalized.y = 1 - e.clientY / window.innerHeight;
				this.pointer.x = (e.clientX / window.innerWidth) * 2 - 1;
				this.pointer.y = -(e.clientY / window.innerHeight) * 2 + 1;
			});
		}
	}

	update(delta, elapsed) {
		let pointerX, pointerY;

		if (this.isTouch) {
			// Figure-8 animation for camera
			this.touchTime += delta * 0.5;
			pointerX = Math.sin(this.touchTime);
			pointerY = Math.sin(this.touchTime * 0.7) * 0.5;

			// Figure-8 for trail (faster)
			const trailT = elapsed * 1.3;
			const tx = Math.sin(trailT);
			const ty = Math.sin(trailT * 2.0);
			this.mouseNormalized.x = 0.5 + tx * 0.5;
			this.mouseNormalized.y = 0.5 + ty * 0.5;
		} else {
			pointerX = this.pointer.x;
			pointerY = this.pointer.y;
		}

		const zoom = this.isMobile ? 1.2 : 1;

		this._targetPos[0] =
			this.lookAt.x + (this.basePos.x - this.lookAt.x) * zoom + pointerX * 0.125;
		this._targetPos[1] =
			this.lookAt.y + (this.basePos.y - this.lookAt.y) * zoom + pointerY * 0.075;
		this._targetPos[2] =
			this.lookAt.z + (this.basePos.z - this.lookAt.z) * zoom;

		easing.damp3(this.camera.position, this._targetPos, this.smoothTime, delta);
		this.camera.lookAt(this.lookAt);
	}
}

import { GLTFLoader } from "three/examples/jsm/loaders/GLTFLoader";
import { DRACOLoader } from "three/examples/jsm/loaders/DRACOLoader";

const loader = new GLTFLoader();
const dracoLoader = new DRACOLoader();
dracoLoader.setDecoderPath("https://www.gstatic.com/draco/v1/decoders/");
loader.setDRACOLoader(dracoLoader);

export default class ImportGltf {
	constructor(url, { onLoad }) {
		this.ready = new Promise((resolve, reject) => {
			loader.load(
				url,
				(gltf) => {
					onLoad?.(gltf.scene);
					resolve();
				},
				undefined,
				(error) => {
					console.error("GLTF load error:", error);
					reject(error);
				},
			);
		});
	}
}

import * as THREE from "three/webgpu";
import ImportGltf from "./ImportGltf";
import { createFresnelMaterial } from "../materials/fresnelMaterial";

export default class InstancedModel {
	constructor(
		scene,
		{
			url,
			meshName,
			heightMax = 1.0,
			roughness = 1.0,
			color,
			emissiveIntensity,
			count = 12,
			spacing = 0.65,
		},
	) {
		this.scene = scene;
		this.count = count;
		this.spacing = spacing;

		const gltf = new ImportGltf(url, {
			onLoad: (model) => {
				let geometry = null;
				model.traverse((child) => {
					if (child.isMesh && (!meshName || child.name === meshName)) {
						if (!geometry) geometry = child.geometry;
					}
				});

				const material = createFresnelMaterial({
					heightMax,
					roughness,
					color,
					emissiveIntensity,
				});
				const mesh = new THREE.InstancedMesh(geometry, material, this.count);
				this.#setPositions(mesh);
				this.scene.add(mesh);
			},
		});
		this.ready = gltf.ready;
	}

	#setPositions(mesh) {
		const { count, spacing } = this;
		const gridSize = Math.ceil(Math.sqrt(count));
		const halfSize = ((gridSize - 1) * spacing) / 2;
		const spacingZ = spacing * 0.65;
		const halfSizeZ = ((gridSize - 1) * spacingZ) / 2;
		const dummy = new THREE.Object3D();

		for (let i = 0; i < count; i++) {
			const x = i % gridSize;
			const z = Math.floor(i / gridSize);
			const xOffset = z % 2 === 1 ? spacing / 2 : 0;

			dummy.position.set(
				x * spacing - halfSize + xOffset,
				0,
				z * spacingZ - halfSizeZ,
			);
			dummy.updateMatrix();
			mesh.setMatrixAt(i, dummy.matrix);
		}
		mesh.instanceMatrix.needsUpdate = true;
	}
}

import * as THREE from "three";

export default class MouseTrail {
	constructor(width, height) {
		this.currentX = null;
		this.currentY = null;
		this.lastX = null;
		this.lastY = null;
		this.opacity = 0;
		this.lerpSpeed = 0.075;
		this.fadeInSpeed = 0.1;
		this.fadeOutSpeed = 0.1;
		this.moveThreshold = 0.5;

		this.#createCanvas(width, height);
		this.#createTexture();
	}

	#createCanvas(width, height) {
		this.canvas = document.createElement("canvas");
		this.canvas.width = width;
		this.canvas.height = height;
		this.ctx = this.canvas.getContext("2d");
		this.lineWidth = Math.max(width * 0.2, 100);

		this.ctx.fillStyle = "white";
		this.ctx.fillRect(0, 0, width, height);
	}

	#createTexture() {
		this.texture = new THREE.CanvasTexture(this.canvas);
		this.texture.minFilter = THREE.LinearFilter;
		this.texture.magFilter = THREE.LinearFilter;
		this.texture.generateMipmaps = false;
	}

	update(mouseX, mouseY) {
		const targetX = mouseX * this.canvas.width;
		const targetY = (1 - mouseY) * this.canvas.height;

		if (this.currentX === null) {
			this.currentX = targetX;
			this.currentY = targetY;
			this.lastX = targetX;
			this.lastY = targetY;
			return;
		}

		this.#lerp(targetX, targetY);
		this.#updateOpacity();
		this.#draw();

		this.lastX = this.currentX;
		this.lastY = this.currentY;
		this.texture.needsUpdate = true;
	}

	#lerp(targetX, targetY) {
		this.currentX += (targetX - this.currentX) * this.lerpSpeed;
		this.currentY += (targetY - this.currentY) * this.lerpSpeed;
	}

	#updateOpacity() {
		const dx = this.currentX - this.lastX;
		const dy = this.currentY - this.lastY;
		const dist = Math.sqrt(dx * dx + dy * dy);

		if (dist > this.moveThreshold) {
			this.opacity = Math.min(1, this.opacity + this.fadeInSpeed);
		} else {
			this.opacity = Math.max(0, this.opacity - this.fadeOutSpeed);
		}
	}

	#draw() {
		const { canvas, ctx, lineWidth } = this;

		ctx.fillStyle = "white";
		ctx.fillRect(0, 0, canvas.width, canvas.height);

		if (this.opacity > 0.01) {
			ctx.beginPath();
			ctx.moveTo(this.lastX, this.lastY);
			ctx.lineTo(this.currentX, this.currentY);
			ctx.lineCap = "round";
			ctx.lineWidth = lineWidth;
			ctx.strokeStyle = `rgba(0, 0, 0, ${this.opacity})`;
			ctx.stroke();
		}
	}

	dispose() {
		this.texture.dispose();
	}
}

import {
	vec2,
	float,
	sub,
	sin,
	cos,
	mul,
	add,
	mix,
	dot,
	Fn,
	fract,
	floor,
} from "three/tsl";

const rand = Fn(([n]) => {
	const dp = dot(n, vec2(12.9898, 4.1414));
	return fract(mul(sin(dp), 43758.5453));
});

const noise = Fn(([p]) => {
	const ip = floor(p);
	const u = fract(p);
	const uu = mul(mul(u, u), sub(float(3.0), mul(u, 2.0)));

	const res = mix(
		mix(rand(ip), rand(add(ip, vec2(1.0, 0.0))), uu.x),
		mix(rand(add(ip, vec2(0.0, 1.0))), rand(add(ip, vec2(1.0, 1.0))), uu.x),
		uu.y,
	);
	return mul(res, res);
});

export const fbm = Fn(([x, numOctaves]) => {
	const v = float(0.0).toVar();
	const a = float(0.5).toVar();
	const shift = vec2(100);
	const angle = float(0.5);
	const c = cos(angle);
	const s = sin(angle);
	const xx = x.toVar();

	// 4 octaves (unrolled — TSL has no loops)
	v.assign(add(v, mul(a, noise(xx))));
	xx.assign(add(mul(vec2(sub(mul(xx.x, c), mul(xx.y, s)), add(mul(xx.x, s), mul(xx.y, c))), 2.0), shift));
	a.assign(mul(a, 0.5));

	v.assign(add(v, mul(a, noise(xx))));
	xx.assign(add(mul(vec2(sub(mul(xx.x, c), mul(xx.y, s)), add(mul(xx.x, s), mul(xx.y, c))), 2.0), shift));
	a.assign(mul(a, 0.5));

	v.assign(add(v, mul(a, noise(xx))));
	xx.assign(add(mul(vec2(sub(mul(xx.x, c), mul(xx.y, s)), add(mul(xx.x, s), mul(xx.y, c))), 2.0), shift));
	a.assign(mul(a, 0.5));

	v.assign(add(v, mul(a, noise(xx))));

	return v;
});

import { defineConfig } from 'vite'
import tailwindcss from '@tailwindcss/vite'

export default defineConfig({
  plugins: [tailwindcss()],
  base: './',
})

Building a Dual-Scene Fluid X-Ray Reveal Effect in Three.js
Original author: Cullen Webber
Published by Codrops. Copyright (c) 2026 Codrops.
License: MIT, pursuant to the publisher's downloadable-demo grant.
Keep CODROPS-MIT-2026.txt and the original project notices with copies.
Third-party media exceptions and credits are recorded separately in the source inventory.

Google Draco 1.5.5 license and bundled notices
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Files: docs/assets/js/ASCIIMathML.js

Copyright (c) 2014 Peter Jipsen and other ASCIIMathML.js contributors

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README.md
## Credits

- [Three.js](https://threejs.org/)
- [maath](https://github.com/pmndrs/maath) for easing utilities


## License

[MIT](LICENSE)

three@0.183.2 — LICENSE
The MIT License

Copyright © 2010-2026 three.js authors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.