### Run the demo

Source: https://docs.threejswaterpro.com/guide/installation.html

Commands to install dependencies and start the development server for the ocean demo.

```bash
cd threejs-water-pro
npm install
npm run dev
```

--------------------------------

### Run Development Server

Source: https://docs.threejswaterpro.com/guide/basic-example.html

Starts the local development server to view the project in the browser.

```bash
npm run dev
```

--------------------------------

### Build Library Dependencies

Source: https://docs.threejswaterpro.com/guide/basic-example.html

Install local dependencies and build the library from the provided package.

```bash
npm install
npm run build:lib
```

--------------------------------

### Install Three.js Dependencies

Source: https://docs.threejswaterpro.com/guide/basic-example.html

Install the required Three.js package and its corresponding TypeScript definitions.

```bash
npm install three@^0.183.0
npm install --save-dev @types/three@^0.183.0
```

--------------------------------

### Install Three.js dependency

Source: https://docs.threejswaterpro.com/guide/installation.html

Required version of Three.js for the library.

```bash
npm install three@^0.181.0
```

--------------------------------

### Start Local Development Server

Source: https://docs.threejswaterpro.com/guide/basic-example.html

Commands to serve files locally to avoid browser restrictions on ES modules.

```bash
# Using Python
python3 -m http.server 8080

# Using Node.js (npx)
npx serve .

# Using PHP
php -S localhost:8080
```

--------------------------------

### Buoyancy Implementation Example

Source: https://docs.threejswaterpro.com/api/buoyancy.html

Demonstrates registering objects with different sampling configurations and updating them at runtime.

```typescript
import * as THREE from "three/webgpu";

// Ship with multi-point sampling (the default), giving full pitch and roll dynamics.
const shipId = water.buoyancy.addObject(shipMesh, {
  heightOffset: -2,
  rotationInfluence: 0.6,
});

// Override the bounding box with explicit sample dimensions.
const customShipId = water.buoyancy.addObject(shipMesh, {
  heightOffset: -2,
  rotationInfluence: 0.6,
  useBoundingBox: false,
  sampleLength: 30,
  sampleWidth: 8,
  sampleOffset: new THREE.Vector3(0, 0, 5),
});

// Buoy with single-point sampling. It bobs up and down without tilting.
const buoyId = water.buoyancy.addObject(buoyMesh, {
  multiPoint: false,
  heightOffset: 0.5,
});

// Update an object's parameters at runtime.
water.buoyancy.updateObjectConfig(shipId, {
  heightOffset: -1.5,
  rotationInfluence: 0.8,
});

// Remove when done.
water.buoyancy.removeObject(buoyId);
```

--------------------------------

### Configure Ocean Floor State

Source: https://docs.threejswaterpro.com/api/ocean-floor.html

Example usage for setting the floor depth and visibility.

```typescript
water.floor.setDepth(40);
water.floor.setVisible(false);
```

--------------------------------

### Get Sampler Method

Source: https://docs.threejswaterpro.com/api/buoyancy.html

Provides access to the underlying wave sampler for external systems.

```typescript
getSampler(): IWaveSampler
```

--------------------------------

### Load Preset

Source: https://docs.threejswaterpro.com/api/water-system.html

Defines the signature for loading a preset and provides examples for loading by name or object.

```typescript
loadPreset(preset: PresetName | WaterPreset): void
```

```typescript
water.loadPreset("sunset");
water.loadPreset(myCustomPreset);
```

--------------------------------

### Configure Transparent Material

Source: https://docs.threejswaterpro.com/guide/transparent-objects.html

Standard setup for a transparent material that automatically integrates with fog, reflections, and depth sorting.

```typescript
const material = new THREE.MeshStandardMaterial({
  color: 0x4488ff,
  transparent: true,
  opacity: 0.5,
});
// Fog, reflections, and depth sorting are handled automatically.
```

--------------------------------

### Update Ambient Particles Configuration

Source: https://docs.threejswaterpro.com/api/particles.html

Example of applying new particle settings to the water instance.

```typescript
water.particles.updateParams({
  count: 200,
  minSize: 0.1,
  maxSize: 0.3,
  opacity: 0.4,
  color: "#a0c8d0",
  nearDistance: 2,
  farDistance: 50,
});
```

--------------------------------

### Water Masking Usage Example

Source: https://docs.threejswaterpro.com/api/masking.html

Demonstrates registering a mesh as a mask, checking its status, removing it, and toggling the masking feature.

```typescript
water.masking.add(hullMesh);
water.masking.has(hullMesh);
water.masking.remove(hullMesh);

// Turn masking off temporarily without unregistering objects.
water.masking.enabled = false;
```

--------------------------------

### Boat Hull Masking Example

Source: https://docs.threejswaterpro.com/guide/water-masking.html

Shows how to parent a simplified mask mesh to a model for automatic transform synchronization and register it for masking.

```typescript
// Load boat model
const boat = await loadBoatModel();
scene.add(boat);

// Create simplified hull interior mask
const hullMask = new THREE.Mesh(
  new THREE.BoxGeometry(8, 3, 15),
  new THREE.MeshBasicMaterial(),
);

// Position mask inside hull and hide from main render
hullMask.position.set(0, -1, 0);
hullMask.visible = false;
boat.add(hullMask); // Parent to boat for automatic transforms

// Register as water mask
water.masking.add(hullMask);
```

--------------------------------

### Dispose and Animate

Source: https://docs.threejswaterpro.com/api/water-system.html

Example of the animation loop and proper resource disposal to prevent memory leaks.

```typescript
dispose(): void
```

```typescript
function animate() {
  water.update(clock.getDelta());
  water.render();
  requestAnimationFrame(animate);
}

// Cleanup
water.dispose();
```

--------------------------------

### Geometry and Height Configuration

Source: https://docs.threejswaterpro.com/api/water-system.html

Defines signatures for geometry and height queries, and provides usage examples for common configuration tasks.

```typescript
getHeightAt(x: number, z: number): Promise<number>
```

```typescript
setPosition(x: number, z: number): void
```

```typescript
rebuildGeometry(config: Partial<Omit<ClipmapConfig, "segments" | "infinityRingExtent">>): void
```

```typescript
recreateOceanFloor(options: Partial<OceanFloorOptions>): Promise<void>
```

```typescript
getGeometryConfig(): Readonly<ClipmapConfig>
```

```typescript
water.rebuildGeometry({ levels: 5, baseSize: 600 });

await water.recreateOceanFloor({ meshResolution: 64 });

const height = await water.getHeightAt(100, 200);
```

--------------------------------

### Managing Wake Generators in TypeScript

Source: https://docs.threejswaterpro.com/api/wake.html

Demonstrates how to register, update, and remove wake generators for different mesh types, including multi-generator setups for complex wake patterns.

```typescript
import * as THREE from "three/webgpu";

// Register a boat with a deep, wide hull footprint at its centre.
const boatId = water.wake.addGenerator(boatMesh, { depth: 1.2, radius: 4.0 });

// For a richer wake, register a bow and a stern generator (forward = +Z here).
// The field superposes them into a bow wave plus a stern trail.
const bowId = water.wake.addGenerator(boatMesh, {
  depth: 1.2,
  radius: 4.0,
  offset: new THREE.Vector3(0, 0, 10), // 10 m forward of the origin
});
const sternId = water.wake.addGenerator(boatMesh, {
  depth: 1.2,
  radius: 4.0,
  offset: new THREE.Vector3(0, 0, -10), // 10 m aft
});

// Register a small buoy with a shallow, tight footprint.
const buoyId = water.wake.addGenerator(buoyMesh, { depth: 0.3, radius: 1.5 });

// Temporarily stop injection (e.g. while the boat is in dry dock).
water.wake.updateGenerator(boatId, { active: false });

// Increase friction for a shorter, more damped trail. Friction does not
// change amplitude.
water.wake.friction = 0.5;

// Unregister.
water.wake.removeGenerator(boatId);
```

--------------------------------

### Initialize Sky and Water Systems in main.js

Source: https://docs.threejswaterpro.com/guide/sky-pro-integration.html

Sets up the WebGPURenderer, configures the Sky and Water systems, and initializes the post-processing pipeline. Requires the three/webgpu and associated library modules.

```javascript
import * as THREE from "three/webgpu";
import { pass } from "three/tsl";
import { bloom } from "three/addons/tsl/display/BloomNode.js";
import { OrbitControls } from "three/addons/controls/OrbitControls.js";
import { WaterSystem, getPresetParams } from "../lib/threejs-water-pro/index.js";
import { SkySystem, PRESETS } from "../lib/threejs-sky-pro/index.js";

function setupPostProcessing(renderer, water, sky) {
  const postProcessing = new THREE.PostProcessing(renderer);
  const scenePass = pass(water.scene, water.camera);
  let outputNode = scenePass.getTextureNode("output");

  // Add water effects (atmospheric fog, underwater haze, sun shafts)
  outputNode = water.postProcessing.buildNode(scenePass, outputNode);

  // Composite the sky over the scene (distance fog, clouds, god rays).
  // It reads the scene pass depth, so clouds pass behind your geometry.
  outputNode = sky.applyTo(outputNode, scenePass);

  // Add bloom
  const bloomPass = bloom(outputNode, 0.5, 0.4, 0.85);
  outputNode = outputNode.add(bloomPass);

  postProcessing.outputNode = outputNode;
  return postProcessing;
}

async function main() {
  // Create renderer
  const renderer = new THREE.WebGPURenderer();
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.setPixelRatio(Math.min(window.devicePixelRatio, 1));
  renderer.toneMapping = THREE.ACESFilmicToneMapping;
  document.body.appendChild(renderer.domElement);
  await renderer.init();

  // Create scene and camera
  const scene = new THREE.Scene();
  const camera = new THREE.PerspectiveCamera(
    60,
    window.innerWidth / window.innerHeight,
    0.1,
    50000,
  );
  camera.position.set(50, 25, 50);

  // Add orbit controls
  const controls = new OrbitControls(camera, renderer.domElement);
  controls.enableDamping = true;
  controls.dampingFactor = 0.05;

  // Create water system
  const water = await WaterSystem.create(renderer, scene, camera, "medium");
  water.loadPreset(getPresetParams("blackFlag"));

  // Create the sky. SkySystem.create adds its backdrop meshes to the scene
  // for you; applyPreset sets the look (clouds, atmosphere, sun).
  const sky = await SkySystem.create({ renderer, camera, scene, quality: "medium" });
  await sky.applyPreset(PRESETS.partlyCloudy);
  sky.sun.setFromAngles(35, 120);

  // Wire the sky into the water. The provider drives the water's sun
  // lighting, reflections, and fog color. `envMap: true` bakes an
  // environment map so reflections include the clouds.
  water.setSky(sky.createSkyProvider({ envMap: true }));

  // Set up post-processing
  const postProcessing = setupPostProcessing(renderer, water, sky);

  // Handle window resize
  window.addEventListener("resize", () => {
    const w = window.innerWidth;
    const h = window.innerHeight;
    renderer.setSize(w, h);
    camera.aspect = w / h;
    camera.updateProjectionMatrix();
    water.resize();
    sky.resize(w, h);
  });

  // Compile shaders before starting animation
  await renderer.compileAsync(scene, camera);

  // Animation loop
  let lastTime = performance.now();

  async function animate() {
    requestAnimationFrame(animate);

    const now = performance.now();
    const deltaTime = (now - lastTime) / 1000;
    lastTime = now;

    controls.update();
    sky.update(deltaTime);
    await water.update(deltaTime);
    postProcessing.render();
  }

  animate();
}

main();
```

--------------------------------

### Initialize Main Application Loop

Source: https://docs.threejswaterpro.com/guide/basic-example.html

Sets up post-processing, window resizing, shader compilation, and the animation loop for the water scene.

```javascript
  // Set up post-processing
  const postProcessing = setupPostProcessing(renderer, water);

  // Handle window resize
  window.addEventListener("resize", () => {
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    water.resize();
  });

  // Compile shaders before starting animation
  await renderer.compileAsync(scene, camera);

  // Animation loop
  let lastTime = performance.now();

  async function animate() {
    requestAnimationFrame(animate);

    const now = performance.now();
    const deltaTime = (now - lastTime) / 1000;
    lastTime = now;

    controls.update();
    await water.update(deltaTime);
    postProcessing.render();
  }

  animate();
}

main();
```

--------------------------------

### getGeometryConfig

Source: https://docs.threejswaterpro.com/api/water-system.html

Get the current clipmap geometry configuration.

```APIDOC
## getGeometryConfig()

### Description
Get the current clipmap geometry configuration.
```

--------------------------------

### Initialize Water System in main.js

Source: https://docs.threejswaterpro.com/guide/basic-example.html

The main entry point script that sets up the WebGPU renderer, scene, camera, and water system.

```javascript
import * as THREE from "three/webgpu";
import { pass } from "three/tsl";
import { bloom } from "three/addons/tsl/display/BloomNode.js";
import { OrbitControls } from "three/addons/controls/OrbitControls.js";
import { WaterSystem, Sky, getPresetParams } from "../lib/index.js";

function setupPostProcessing(renderer, water) {
  const postProcessing = new THREE.PostProcessing(renderer);
  const scenePass = pass(water.scene, water.camera);
  let outputNode = scenePass.getTextureNode("output");

  // Add water effects (atmospheric fog, underwater haze, sun shafts)
  outputNode = water.postProcessing.buildNode(scenePass, outputNode);

  // Add bloom
  const bloomPass = bloom(outputNode, 0.5, 0.4, 0.85);
  outputNode = outputNode.add(bloomPass);

  postProcessing.outputNode = outputNode;
  return postProcessing;
}

async function main() {
  // Create renderer
  const renderer = new THREE.WebGPURenderer();
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.setPixelRatio(Math.min(window.devicePixelRatio, 1));
  renderer.toneMapping = THREE.ACESFilmicToneMapping;
  document.body.appendChild(renderer.domElement);
  await renderer.init();

  // Create scene and camera
  const scene = new THREE.Scene();
  const camera = new THREE.PerspectiveCamera(
    60,
    window.innerWidth / window.innerHeight,
    0.1,
    20000,
  );
  camera.position.set(50, 25, 50);

  // Add orbit controls
  const controls = new OrbitControls(camera, renderer.domElement);
  controls.enableDamping = true;
  controls.dampingFactor = 0.05;

  // Load preset params (used for both water and sky configuration)
  const preset = getPresetParams("dusk");

  // Create water system
  const water = await WaterSystem.create(renderer, scene, camera, "high");
  water.loadPreset(preset);

  // Load an equirectangular sky image
  const loader = new THREE.TextureLoader();
  const equirect = await loader.loadAsync("sky.jpg");
  equirect.mapping = THREE.EquirectangularReflectionMapping;
  equirect.wrapS = THREE.RepeatWrapping;
  equirect.colorSpace = THREE.SRGBColorSpace;

  const sky = new Sky(renderer, {
    equirect,
    sunDirection: water.lighting.sun.direction,
  });
  for (const mesh of sky.getMeshes()) scene.add(mesh);
  water.setSky(sky);

  for (let i = 0; i < 10; i++) {
    const geometry = new THREE.BoxGeometry(4, 4, 4);
    const material = new THREE.MeshStandardMaterial({
      color: new THREE.Color(Math.random(), Math.random(), Math.random()),
    });
    const box = new THREE.Mesh(geometry, material);

    // Position boxes in a scattered pattern
    const angle = (i / 10) * Math.PI * 2;
    const distance = 10 + Math.random() * 25;
    box.position.set(Math.cos(angle) * distance, 0, Math.sin(angle) * distance);

    // Add box to the scene
    scene.add(box);

    // Add to buoyancy system
    water.buoyancy.addObject(box, {
      heightSmoothing: 0.15,
      rotationSmoothing: 0.1,
    });
  }
```

--------------------------------

### Get Ocean Floor Mesh

Source: https://docs.threejswaterpro.com/api/ocean-floor.html

Retrieves the underlying Three.js mesh instance.

```typescript
getMesh(): THREE.Mesh
```

--------------------------------

### Initialize Main Application Entry Point

Source: https://docs.threejswaterpro.com/guide/basic-example.html

Configures the WebGPU renderer, scene, camera, and water system. Requires a valid sky.jpg texture in the project root for proper atmospheric rendering.

```typescript
import * as THREE from "three/webgpu";
import { pass } from "three/tsl";
import { bloom } from "three/addons/tsl/display/BloomNode.js";
import { OrbitControls } from "three/addons/controls/OrbitControls.js";
import { WaterSystem, Sky, getPresetParams } from "./threejs-water-pro";

function setupPostProcessing(
  renderer: THREE.WebGPURenderer,
  water: WaterSystem,
): THREE.PostProcessing {
  const postProcessing = new THREE.PostProcessing(renderer);
  const scenePass = pass(water.scene, water.camera);
  let outputNode: THREE.Node = scenePass.getTextureNode("output");

  // Add water effects (atmospheric fog, underwater haze, sun shafts)
  outputNode = water.postProcessing.buildNode(scenePass, outputNode);

  // Add bloom
  const bloomPass = bloom(outputNode, 0.5, 0.4, 0.85);
  outputNode = outputNode.add(bloomPass);

  postProcessing.outputNode = outputNode;
  return postProcessing;
}

async function main() {
  // Create renderer
  const renderer = new THREE.WebGPURenderer();
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.setPixelRatio(Math.min(window.devicePixelRatio, 1));
  renderer.toneMapping = THREE.ACESFilmicToneMapping;
  document.body.appendChild(renderer.domElement);
  await renderer.init();

  // Create scene and camera
  const scene = new THREE.Scene();
  const camera = new THREE.PerspectiveCamera(
    60,
    window.innerWidth / window.innerHeight,
    0.1,
    20000,
  );
  camera.position.set(50, 25, 50);

  // Add orbit controls
  const controls = new OrbitControls(camera, renderer.domElement);
  controls.enableDamping = true;
  controls.dampingFactor = 0.05;

  // Load preset params (used for both water and sky configuration)
  const preset = getPresetParams("dusk");

  // Create water system
  const water = await WaterSystem.create(renderer, scene, camera, "high");
  water.loadPreset(preset);

  // Load an equirectangular sky image
  const loader = new THREE.TextureLoader();
  const equirect = await loader.loadAsync("sky.jpg");
  equirect.mapping = THREE.EquirectangularReflectionMapping;
  equirect.wrapS = THREE.RepeatWrapping;
  equirect.colorSpace = THREE.SRGBColorSpace;

  const sky = new Sky(renderer, {
    equirect,
    sunDirection: water.lighting.sun.direction,
  });
  for (const mesh of sky.getMeshes()) scene.add(mesh);
  water.setSky(sky);

  for (let i = 0; i < 10; i++) {
    const geometry = new THREE.BoxGeometry(4, 4, 4);
    const material = new THREE.MeshStandardMaterial({
      color: new THREE.Color(Math.random(), Math.random(), Math.random()),
    });
    const box = new THREE.Mesh(geometry, material);

    // Position boxes in a scattered pattern
    const angle = (i / 10) * Math.PI * 2;
    const distance = 10 + Math.random() * 25;
    box.position.set(Math.cos(angle) * distance, 0, Math.sin(angle) * distance);

    // Add box to the scene
    scene.add(box);

    // Add to buoyancy system
    water.buoyancy.addObject(box, {
      heightSmoothing: 0.15,
      rotationSmoothing: 0.1,
    });
  }

  // Set up post-processing
  const postProcessing = setupPostProcessing(renderer, water);

  // Handle window resize
  window.addEventListener("resize", () => {
    camera.aspect = window.innerWidth / window.innerHeight;
    camera.updateProjectionMatrix();
    water.resize();
  });

  // Compile shaders before starting animation
  await renderer.compileAsync(scene, camera);

  // Animation loop
  let lastTime = performance.now();

  async function animate() {
    requestAnimationFrame(animate);

    const now = performance.now();
    const deltaTime = (now - lastTime) / 1000;
    lastTime = now;

    controls.update();
    await water.update(deltaTime);
    postProcessing.render();
  }

  animate();
}

main();
```

--------------------------------

### create

Source: https://docs.threejswaterpro.com/api/water-system.html

Static factory method to initialize the WaterSystem.

```APIDOC
## create(renderer, scene, camera, quality?, options?)

### Description
Static async factory method and the only way to construct a WaterSystem.

### Parameters
- **renderer** (THREE.WebGPURenderer) - Required
- **scene** (THREE.Scene) - Required
- **camera** (THREE.PerspectiveCamera) - Required
- **quality** (QualityLevel) - Optional
- **options** (WaterSystemOptions) - Optional
```

--------------------------------

### Get all generators

Source: https://docs.threejswaterpro.com/api/wake.html

Returns a live, read-only map of all registered generators keyed by their ID.

```typescript
getGenerators(): ReadonlyMap<number, WakeGenerator>
```

--------------------------------

### Initialize WaterSystem with create()

Source: https://docs.threejswaterpro.com/api/water-system.html

Use the static async create method to instantiate the system with required Three.js components.

```typescript
static async create(
  renderer: THREE.WebGPURenderer,
  scene: THREE.Scene,
  camera: THREE.PerspectiveCamera,
  quality?: QualityLevel,
  options?: WaterSystemOptions,
): Promise<WaterSystem>
```

--------------------------------

### Get generator count

Source: https://docs.threejswaterpro.com/api/wake.html

Returns the total number of currently registered wake generators.

```typescript
getGeneratorCount(): number
```

--------------------------------

### Initialize Vite Project

Source: https://docs.threejswaterpro.com/guide/basic-example.html

Create a new project directory using the Vite vanilla-ts template.

```bash
npm create vite@latest my-ocean-project -- --template vanilla-ts
cd my-ocean-project
```

--------------------------------

### WaterSystem.create()

Source: https://docs.threejswaterpro.com/api/water-system.html

Static async factory method to instantiate the WaterSystem with specified renderer, scene, camera, and optional configuration.

```APIDOC
## static async create(renderer, scene, camera, quality?, options?)

### Description
Initializes the water rendering system. This is the required method to create a new instance of WaterSystem.

### Parameters
- **renderer** (THREE.WebGPURenderer) - Required - Initialized WebGPU renderer.
- **scene** (THREE.Scene) - Required - Three.js scene to add water to.
- **camera** (THREE.PerspectiveCamera) - Required - Camera for rendering.
- **quality** (QualityLevel) - Optional - Quality tier: "low", "medium", "high", "ultra". Default: "high".
- **options** (WaterSystemOptions) - Optional - Configuration object.

### Options
- **deterministic** (boolean) - Optional - Enable fixed-step simulation. Default: false.
- **seed** (number) - Optional - Phillips spectrum seed. Default: 1.
- **stepSize** (number) - Optional - Fixed simulation substep in seconds. Default: 1/60.
```

--------------------------------

### Setting Up Post-Processing

Source: https://docs.threejswaterpro.com/guide/post-processing.html

Initialize a PostProcessing instance and apply water effects to the output node.

```typescript
import * as THREE from "three/webgpu";
import { pass } from "three/tsl";

const postProcessing = new THREE.PostProcessing(renderer);
const scenePass = pass(water.scene, water.camera);
let outputNode: THREE.Node = scenePass.getTextureNode("output");

// Apply water effects (atmospheric fog, underwater haze, sun shafts)
outputNode = water.postProcessing.buildNode(scenePass, outputNode);

postProcessing.outputNode = outputNode;
```

--------------------------------

### Get Camera Water Height Method

Source: https://docs.threejswaterpro.com/api/buoyancy.html

Retrieves the water height at the current camera position.

```typescript
getCameraWaterHeight(): number
```

--------------------------------

### Get Object Count Method

Source: https://docs.threejswaterpro.com/api/buoyancy.html

Returns the total number of objects currently registered for buoyancy.

```typescript
getObjectCount(): number
```

--------------------------------

### Initialize Sky and Water Systems

Source: https://docs.threejswaterpro.com/guide/sky-pro-integration.html

Configures the WebGPURenderer, sets up the scene with water and sky systems, and defines the animation loop for rendering.

```typescript
import * as THREE from "three/webgpu";
import { pass } from "three/tsl";
import { bloom } from "three/addons/tsl/display/BloomNode.js";
import { OrbitControls } from "three/addons/controls/OrbitControls.js";
import { WaterSystem, getPresetParams } from "./threejs-water-pro";
import { SkySystem, PRESETS } from "./threejs-sky-pro";

function setupPostProcessing(
  renderer: THREE.WebGPURenderer,
  water: WaterSystem,
  sky: SkySystem,
): THREE.PostProcessing {
  const postProcessing = new THREE.PostProcessing(renderer);
  const scenePass = pass(water.scene, water.camera);
  let outputNode: THREE.Node = scenePass.getTextureNode("output");

  // Add water effects (atmospheric fog, underwater haze, sun shafts)
  outputNode = water.postProcessing.buildNode(scenePass, outputNode);

  // Composite the sky over the scene (distance fog, clouds, god rays).
  // It reads the scene pass depth, so clouds pass behind your geometry.
  outputNode = sky.applyTo(outputNode, scenePass);

  // Add bloom
  const bloomPass = bloom(outputNode, 0.5, 0.4, 0.85);
  outputNode = outputNode.add(bloomPass);

  postProcessing.outputNode = outputNode;
  return postProcessing;
}

async function main() {
  // Create renderer
  const renderer = new THREE.WebGPURenderer();
  renderer.setSize(window.innerWidth, window.innerHeight);
  renderer.setPixelRatio(Math.min(window.devicePixelRatio, 1));
  renderer.toneMapping = THREE.ACESFilmicToneMapping;
  document.body.appendChild(renderer.domElement);
  await renderer.init();

  // Create scene and camera
  const scene = new THREE.Scene();
  const camera = new THREE.PerspectiveCamera(
    60,
    window.innerWidth / window.innerHeight,
    0.1,
    50000,
  );
  camera.position.set(50, 25, 50);

  // Add orbit controls
  const controls = new OrbitControls(camera, renderer.domElement);
  controls.enableDamping = true;
  controls.dampingFactor = 0.05;

  // Create water system
  const water = await WaterSystem.create(renderer, scene, camera, "medium");
  water.loadPreset(getPresetParams("blackFlag"));

  // Create the sky. SkySystem.create adds its backdrop meshes to the scene
  // for you; applyPreset sets the look (clouds, atmosphere, sun).
  const sky = await SkySystem.create({ renderer, camera, scene, quality: "medium" });
  await sky.applyPreset(PRESETS.partlyCloudy);
  sky.sun.setFromAngles(35, 120);

  // Wire the sky into the water. The provider drives the water's sun
  // lighting, reflections, and fog color. `envMap: true` bakes an
  // environment map so reflections include the clouds.
  water.setSky(sky.createSkyProvider({ envMap: true }));

  // Set up post-processing
  const postProcessing = setupPostProcessing(renderer, water, sky);

  // Compile shaders before starting animation
  await renderer.compileAsync(scene, camera);

  // Animation loop
  let lastTime = performance.now();

  async function animate() {
    requestAnimationFrame(animate);

    const now = performance.now();
    const deltaTime = (now - lastTime) / 1000;
    lastTime = now;

    controls.update();
    sky.update(deltaTime);
    await water.update(deltaTime);
    postProcessing.render();
  }

  animate();
}

main();
```

--------------------------------

### Configure Basic Wave Parameters

Source: https://docs.threejswaterpro.com/guide/wave-tuning.html

Sets initial values for wind speed, peak wavelength, choppiness, and standing wave ratio.

```typescript
water.waves.windSpeed.value = 8;
water.waves.peakWavelength.value = 75;
water.waves.choppiness.value = 0.8;
water.waves.standingWaveRatio.value = 0.3;
```

--------------------------------

### Initialize WebGPURenderer

Source: https://docs.threejswaterpro.com/guide/installation.html

Correct import and initialization pattern for WebGPU support.

```typescript
// Correct - import from three/webgpu
import * as THREE from "three/webgpu";

const renderer = new THREE.WebGPURenderer();
await renderer.init();

// Wrong - won't work with WebGPU features
import * as THREE from "three";
```

--------------------------------

### Initialize Deterministic WaterSystem

Source: https://docs.threejswaterpro.com/api/water-system.html

Sets up the WaterSystem with deterministic mode enabled and synchronizes it to an authoritative network tick.

```typescript
const water = await WaterSystem.create(renderer, scene, camera, "high", {
  deterministic: true,
  seed: 12345,
});

// Whenever your network reports an authoritative tick:
water.syncToTick(authoritativeTick);
```

--------------------------------

### Apply a Preset After Initialization

Source: https://docs.threejswaterpro.com/guide/presets.html

Load a built-in preset by name after the water system has been created.

```typescript
const scene = new THREE.Scene();
const water = await WaterSystem.create(renderer, scene, camera);
water.loadPreset("sunset");
```

--------------------------------

### Get Ocean Floor Depth

Source: https://docs.threejswaterpro.com/api/ocean-floor.html

Retrieves the current depth of the floor below the water surface in world units.

```typescript
getDepth(): number
```

--------------------------------

### Project File Structure

Source: https://docs.threejswaterpro.com/guide/sky-pro-integration.html

Recommended directory layout for integrating the library bundles into a Vite project.

```text
my-ocean-project/
├── src/
│   ├── threejs-water-pro/
│   │   ├── index.js      ← Water Pro library bundle
│   │   ├── index.js.map  ← Source map
│   │   └── index.d.ts    ← TypeScript declarations
│   ├── threejs-sky-pro/
│   │   ├── data/         ← Cloud noise data
│   │   ├── index.js      ← Sky Pro library bundle
│   │   ├── index.js.map  ← Source map
│   │   └── index.d.ts    ← TypeScript declarations
│   └── main.ts
├── index.html
└── package.json
```

--------------------------------

### Get debug data

Source: https://docs.threejswaterpro.com/api/wake.html

Retrieves debug information for all generators, including world-space injection points and hull properties.

```typescript
getDebugData(): WakeDebugData[]
```

--------------------------------

### Import the library

Source: https://docs.threejswaterpro.com/guide/installation.html

Importing the WaterSystem class from the library path.

```typescript
import { WaterSystem } from "/lib/threejs-water-pro";
```

--------------------------------

### Get Debug Data Method

Source: https://docs.threejswaterpro.com/api/buoyancy.html

Retrieves diagnostic data including sample points and resolved heights for visualization.

```typescript
getDebugData(): BuoyancyDebugData[]
```

--------------------------------

### Enable Environment Mapping

Source: https://docs.threejswaterpro.com/guide/sky-pro-integration.html

Configuration option to include cloud reflections in the water surface.

```javascript
envMap: true
```

--------------------------------

### View build directory structure

Source: https://docs.threejswaterpro.com/guide/installation.html

The contents of the build folder after running the build command.

```text
build/
├── index.js      ← Main library bundle
├── index.js.map  ← Source map for debugging
└── index.d.ts    ← TypeScript declarations
```

--------------------------------

### Configure index.html

Source: https://docs.threejswaterpro.com/guide/sky-pro-integration.html

Basic HTML boilerplate for the application, including CSS reset and script entry point.

```html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Three.js Water Pro + Sky Pro</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }
      body {
        overflow: hidden;
        background: #000;
      }
      canvas {
        display: block;
      }
    </style>
  </head>
  <body>
    <script type="module" src="/src/main.ts"></script>
  </body>
</html>
```

--------------------------------

### Initialize WaterSystem

Source: https://docs.threejswaterpro.com/api/water-system.html

The static factory method required to construct a new WaterSystem instance.

```typescript
create(renderer: THREE.WebGPURenderer, scene: THREE.Scene, camera: THREE.PerspectiveCamera, quality?: QualityLevel, options?: WaterSystemOptions): Promise<WaterSystem>
```

--------------------------------

### Register and Remove Wake Generators

Source: https://docs.threejswaterpro.com/guide/wake.html

Add an object to the wake system to start generating a wake, or remove it when the object is no longer needed.

```typescript
// Register a boat. The returned id is used for later updates/removal.
const boatId = water.wake.addGenerator(boatMesh, {
  depth: 1.2, // Hull depth in metres. Controls the wake amplitude.
  radius: 4.0, // Footprint radius in metres. Controls the wake width.
});

// Stop the wake (e.g. the boat left the scene).
water.wake.removeGenerator(boatId);
```

--------------------------------

### Switch Presets at Runtime

Source: https://docs.threejswaterpro.com/guide/presets.html

Update the water system configuration dynamically by loading a different preset.

```typescript
water.loadPreset("storm");
```

--------------------------------

### Project File Structure

Source: https://docs.threejswaterpro.com/guide/basic-example.html

The expected directory layout after copying the library files into the src folder.

```text
my-ocean-project/
├── src/
│   ├── threejs-water-pro/
│   │   ├── index.js      ← Main library bundle
│   │   ├── index.js.map  ← Source map
│   │   └── index.d.ts    ← TypeScript declarations
│   └── main.ts
├── index.html
└── package.json
```

--------------------------------

### Initialize Water System with Quality Level

Source: https://docs.threejswaterpro.com/guide/quality-levels.html

Set the initial quality level during the creation of the WaterSystem instance.

```typescript
const scene = new THREE.Scene();
const water = await WaterSystem.create(renderer, scene, camera, "high");
```

--------------------------------

### Configure Rain and Ripple Settings

Source: https://docs.threejswaterpro.com/api/rain.html

Demonstrates how to enable the rain system and adjust particle and ripple properties for a storm-like effect.

```typescript
// Enable rain with storm-strength settings
water.rain.particles.enabled = true;
water.rain.particles.intensity = 0.8;
water.rain.particles.opacity = 0.5;
water.rain.particles.speed = 6.0;
water.rain.particles.color = "#b3bfcc";
water.rain.particles.streakLength = 0.5;

// Tune surface ripples
water.rain.ripples.strength = 0.6;
water.rain.ripples.density = 1.5;
water.rain.ripples.size = 0.6;
water.rain.ripples.decay = 1.0;
water.rain.ripples.fadeEnd = 80;
```

--------------------------------

### Initialize Sky with UltraHDR

Source: https://docs.threejswaterpro.com/guide/custom-sky.html

Demonstrates loading an Adobe UltraHDR texture and initializing the Sky class for use with a WaterSystem.

```typescript
import * as THREE from "three/webgpu";
import { UltraHDRLoader } from "three/addons/loaders/UltraHDRLoader.js";
import { WaterSystem, Sky } from "threejs-water-pro";

const water = await WaterSystem.create(renderer, scene, camera, "high");

// Load an Adobe UltraHDR JPG (linear HDR data, no colour-space tagging needed).
const loader = new UltraHDRLoader();
const equirect = await loader.loadAsync("sky.jpg");
equirect.mapping = THREE.EquirectangularReflectionMapping;
equirect.wrapS = THREE.RepeatWrapping;
equirect.generateMipmaps = false;
equirect.minFilter = THREE.LinearFilter;
equirect.magFilter = THREE.LinearFilter;

const sky = new Sky(renderer, {
  equirect,
  brightness: 1.0,
  sunDirection: water.lighting.sun.direction,
});

water.setSky(sky);
for (const mesh of sky.getMeshes()) scene.add(mesh);
```

--------------------------------

### Project directory structure for ESM integration

Source: https://docs.threejswaterpro.com/guide/installation.html

Recommended placement of the build folder within your project structure.

```text
your-project/
├── lib/
│   └── threejs-water-pro/  ← Copy build/ contents here
├── package.json
└── ...
```

--------------------------------

### Update index.html

Source: https://docs.threejswaterpro.com/guide/basic-example.html

Configure the HTML entry point to load the main TypeScript module and apply basic styles.

```html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Three.js Water Pro</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }
      body {
        overflow: hidden;
        background: #000;
      }
      canvas {
        display: block;
      }
    </style>
  </head>
  <body>
    <script type="module" src="/src/main.ts"></script>
  </body>
</html>
```

--------------------------------

### Construct WaterSystem in Deterministic Mode

Source: https://docs.threejswaterpro.com/guide/multiplayer.html

Initialize the WaterSystem with deterministic mode enabled and a shared seed to ensure consistent simulation across clients.

```typescript
const water = await WaterSystem.create(renderer, scene, camera, "high", {
  deterministic: true,
  seed: session.seed,
});
```

--------------------------------

### resize

Source: https://docs.threejswaterpro.com/api/water-system.html

Handles viewport resizing for the water system.

```APIDOC
## resize(width?, height?)

### Description
Handle a viewport resize.

### Parameters
- **width** (number) - Optional - New viewport width in pixels. Defaults to window.innerWidth.
- **height** (number) - Optional - New viewport height in pixels. Defaults to window.innerHeight.
```

--------------------------------

### Update Lighting Configuration

Source: https://docs.threejswaterpro.com/guide/migrating-from-v2.html

Migrate sun direction and intensity settings to the new water.lighting subsystem.

```typescript
// v2
water.sun.direction.value.set(0.3, 0.6, 0.5).normalize();
water.sun.intensity.value = 2.0;

// v3
water.lighting.sun.direction.value.set(0.3, 0.6, 0.5).normalize();
water.lighting.sun.intensity.value = 2.0;
```

--------------------------------

### Basic Water Masking Usage

Source: https://docs.threejswaterpro.com/guide/water-masking.html

Demonstrates how to create a mask mesh and register it with the water instance to hide water rendering.

```typescript
// Create mask mesh (e.g., boat hull interior)
const hullMask = new THREE.Mesh(
  new THREE.BoxGeometry(10, 5, 20),
  new THREE.MeshBasicMaterial(),
);
hullMask.position.copy(boat.position);

// Add as water mask
water.masking.add(hullMask);

// Later: remove mask
water.masking.remove(hullMask);
```

--------------------------------

### render

Source: https://docs.threejswaterpro.com/api/water-system.html

Renders the water system scene.

```APIDOC
## render()

### Description
Render the scene. Call after update.
```

--------------------------------

### loadPreset

Source: https://docs.threejswaterpro.com/api/water-system.html

Load a built-in preset name or a custom WaterPreset object.

```APIDOC
## loadPreset(preset: PresetName | WaterPreset)

### Description
Load a built-in preset name or a custom WaterPreset object. Updates all uniforms and subsystems.

### Parameters
- **preset** (PresetName | WaterPreset) - Required - A built-in preset name or a complete custom preset object.
```

--------------------------------

### Initialize SprayDebugVisualizer

Source: https://docs.threejswaterpro.com/api/spray.html

Sets up the debug visualizer to render probe wireframes and velocity arrows in the scene.

```typescript
import { SprayDebugVisualizer } from "threejs-water-pro";

const vis = new SprayDebugVisualizer(scene);
vis.setEnabled(true);

if (vis.isEnabled() && water.spray) {
  vis.update(water.spray.getProbeDebugData());
}
```

--------------------------------

### Update Foam Configuration

Source: https://docs.threejswaterpro.com/guide/migrating-from-v2.html

Remove windBias and transition to using persistence.windwardStrength for foam control.

```typescript
// v2
foam: { waves: { windBias: 0.7 /* etc */ } }

// v3: remove windBias. Tune persistence.windwardStrength for the
// equivalent control.
foam: {
  waves: {
    /* ... */
    persistence: { windwardStrength: 0.7 /* etc */ },
  },
}
```

--------------------------------

### Apply a Custom Preset Configuration

Source: https://docs.threejswaterpro.com/guide/presets.html

Define a custom preset using the WaterPresetConfig type and apply it to the water system.

```typescript
import type { WaterPresetConfig } from "threejs-water-pro";

const myPreset: WaterPresetConfig = { /* paste JSON here */ };
water.loadPreset(myPreset);
```

--------------------------------

### Physical Mode Configuration

Source: https://docs.threejswaterpro.com/guide/migrating-from-v3-3-to-v3-4.html

Configure water appearance using physical parameters like algae, silt, and stain levels.

```typescript
color: {
  mode: "physical",
  algae: 0,
  silt: 0.19,
  stain: 0.01,
}
```

--------------------------------

### Using the SprayDebugVisualizer

Source: https://docs.threejswaterpro.com/guide/spray.html

Initializes and updates the debug visualizer to render probe states in the scene.

```typescript
import { SprayDebugVisualizer } from "threejs-water-pro";

const vis = new SprayDebugVisualizer(scene);
vis.setEnabled(true);

// In your render loop:
if (vis.isEnabled() && water.spray) {
  vis.update(water.spray.getProbeDebugData());
}
```

--------------------------------

### Configure HTML with Import Maps

Source: https://docs.threejswaterpro.com/guide/basic-example.html

The base HTML file including an import map to resolve Three.js dependencies from a CDN.

```html
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Three.js Water Pro</title>
    <style>
      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
      }
      body {
        overflow: hidden;
        background: #000;
      }
      canvas {
        display: block;
      }
    </style>

    <!-- Import map for Three.js CDN -->
    <script type="importmap">
      {
        "imports": {
          "three": "https://cdn.jsdelivr.net/npm/three@0.183.0/build/three.webgpu.min.js",
          "three/webgpu": "https://cdn.jsdelivr.net/npm/three@0.183.0/build/three.webgpu.min.js",
          "three/tsl": "https://cdn.jsdelivr.net/npm/three@0.183.0/build/three.tsl.min.js",
          "three/addons/": "https://cdn.jsdelivr.net/npm/three@0.183.0/examples/jsm/"
        }
      }
    </script>
  </head>
  <body>
    <script type="module" src="./src/main.js"></script>
  </body>
</html>
```

--------------------------------

### Define Project Directory Structure

Source: https://docs.threejswaterpro.com/guide/basic-example.html

The required folder layout for a project using local library files.

```text
my-ocean-project/
├── lib/
├── src/
│   └── main.js
└── index.html
```

--------------------------------

### Migrate Wake Foam Configuration

Source: https://docs.threejswaterpro.com/guide/migrating-from-v2.html

Updates wake-foam handling from manual preset configuration to registering generators with the water instance.

```typescript
// v2: manual wake-foam config in the preset.
foam: { wake: { /* ... */ } }

// v3: register a generator. Foam is automatic.
const id = water.wake.addGenerator(shipModel, { radius: 6, depth: 1.5 });
```

--------------------------------

### Drive update() Normally

Source: https://docs.threejswaterpro.com/guide/multiplayer.html

Standard animation loop implementation for updating and rendering the water system.

```typescript
async function animate() {
  await water.update(clock.getDelta());
  water.render();
  requestAnimationFrame(animate);
}
```

--------------------------------

### Storm Preset

Source: https://docs.threejswaterpro.com/guide/wave-tuning.html

Configuration for high energy, steep peaks, and short chop.

```typescript
water.waves.windSpeed.value = 20;
water.waves.peakWavelength.value = 60;
water.waves.choppiness.value = 1.4;
```

--------------------------------

### Project directory structure for source integration

Source: https://docs.threejswaterpro.com/guide/installation.html

Placement of the source folder when copying files directly into your project.

```text
your-project/
├── lib/
│   └── threejs-water-pro/    ← Copy src/ contents here
├── package.json
└── ...
```

--------------------------------

### Render WaterSystem

Source: https://docs.threejswaterpro.com/api/water-system.html

Renders the water system to the scene. Call this after the update method.

```typescript
render(): void
```

--------------------------------

### Integrate Sky Pro with Water Pro

Source: https://docs.threejswaterpro.com/guide/sky-pro-integration.html

The primary method to link the sky provider to the water system, enabling reflection and lighting synchronization.

```javascript
water.setSky(sky.createSkyProvider({ envMap: true }))
```

--------------------------------

### Update Fresnel configuration

Source: https://docs.threejswaterpro.com/guide/migrating-from-v3-2.html

Remove fadePower, fadeStart, and normalStrength as these are now automatically calculated.

```typescript
// v3.2
fresnel: {
  surface: { fadePower: 2.0, fadeStart: 15, normalStrength: 1.0, iorRatio: 1.33, refractionStrength: 0.1 },
}

// v3.3
fresnel: {
  surface: { iorRatio: 1.33, refractionStrength: 0.1 },
}
```

--------------------------------

### Configure Water Post-Processing Nodes

Source: https://docs.threejswaterpro.com/api/water-system.html

Builds the water effect node graph and integrates custom post-processing effects like bloom.

```typescript
import { pass } from "three/tsl";
import { bloom } from "three/addons/tsl/display/BloomNode.js";

const scenePass = pass(water.scene, water.camera);
let outputNode = scenePass.getTextureNode("output");

// Add water effects
outputNode = water.postProcessing.buildNode(scenePass, outputNode);

// Add your own effects
outputNode = bloom(outputNode);

postProcessing.outputNode = outputNode;
```

--------------------------------

### Updating System Defaults

Source: https://docs.threejswaterpro.com/guide/spray.html

Updates the global opacity setting for the spray system.

```typescript
water.spray.opacity = 0.6;
```

--------------------------------

### Import via Vite alias

Source: https://docs.threejswaterpro.com/guide/installation.html

Importing the library as a package after configuring the Vite alias.

```typescript
import { WaterSystem } from "threejs-water-pro";
```

--------------------------------

### loadTexture(name)

Source: https://docs.threejswaterpro.com/api/foam.html

Switches the foam texture to one of the bundled textures ('foam1' through 'foam4') at runtime.

```APIDOC
## loadTexture(name)

### Description
Changes the current foam texture to a bundled texture by name. This affects only the specific foam group (surface, waves, or shoreline) on which it is called.

### Parameters
- **name** (string) - Required - The name of the bundled texture (e.g., "foam1", "foam2", "foam3", "foam4").

### Example
```typescript
water.foam.waves.loadTexture("foam3");
```
```

--------------------------------

### water.fog Configuration

Source: https://docs.threejswaterpro.com/api/fog.html

Properties used to configure the visual behavior of fog on water surfaces.

```APIDOC
## water.fog Properties

### Description
Configure the fog settings for the water material.

### Properties
- **enabled** (boolean) - Toggles fog effect on or off.
- **color** (string) - The hex color of the fog.
- **fadeStart** (number) - The distance at which the fog begins to fade.
- **fadePower** (number) - The exponent used for the fog fade curve.
- **skyBlendDistance** (number) - The distance over which the fog color blends toward the sky color.
```

--------------------------------

### Check Ocean Floor Visibility

Source: https://docs.threejswaterpro.com/api/ocean-floor.html

Returns the current visibility state of the ocean floor.

```typescript
isVisible(): boolean
```