Ellipsoid

import Stats from "stats.js"
import { GUI } from "dat.gui"
import {
  BasicMaterial,
  Camera,
  CameraPlugin,
  EllipsoidMeshBuilder,
  MeshMaterial3D,
  MeshMaterialPlugin,
  PerspectiveProjection,
  OrbitCameraControls,
  TextureLoader,
  WireframeBuilder,
  WebGLRenderDevice,
  WebGLRenderer,
  CanvasTarget
} from "chorama"

const canvas = document.createElement("canvas")
const renderTarget = new CanvasTarget(canvas)
const renderDevice = new WebGLRenderDevice(canvas, {
  depth: true
})
const renderer = new WebGLRenderer({
  plugins: [
    new CameraPlugin(),
    new MeshMaterialPlugin(),
  ]
})
const camera = new Camera(renderTarget)
const cameraControls = new OrbitCameraControls(camera, canvas)

const textureLoader = new TextureLoader()
const texture = textureLoader.load({
  paths: ["/images/uv.jpg"],
  flipY: true
})
const material = new BasicMaterial({
  mainTexture: texture
})

const meshBuilder = new EllipsoidMeshBuilder()
meshBuilder.radiusX = 0.52
meshBuilder.radiusY = 0.75
meshBuilder.radiusZ = 0.42
meshBuilder.longitudeSegments = 24
meshBuilder.latitudeSegments = 16
const object = new MeshMaterial3D(meshBuilder.build(), material)
const settings = {
  wireframe: false
}

camera.transform.position.set(0, 0.35, 8)
if (camera.projection instanceof PerspectiveProjection) {
  camera.projection.fov = Math.PI / 180 * 100
  camera.projection.aspect = innerWidth / innerHeight
}

document.body.append(canvas)
addEventListener("resize", updateView)
updateView()
requestAnimationFrame(update)

// demo-only GUI controls
const controls = new GUI()
const buildOptionsFolder = controls.addFolder("Settings")
buildOptionsFolder
  .add(meshBuilder, "radiusX", 0, 2, 0.01)
  .name("Radius X")
  .onFinishChange(buildMesh)
buildOptionsFolder
  .add(meshBuilder, "radiusY", 0, 2, 0.01)
  .name("Radius Y")
  .onFinishChange(buildMesh)
buildOptionsFolder
  .add(meshBuilder, "radiusZ", 0, 2, 0.01)
  .name("Radius Z")
  .onFinishChange(buildMesh)
buildOptionsFolder
  .add(meshBuilder, "longitudeSegments", 3, 100, 1)
  .name("Longitude Segments")
  .onFinishChange(buildMesh)
buildOptionsFolder
  .add(meshBuilder, "latitudeSegments", 3, 100, 1)
  .name("Latitude Segments")
  .onFinishChange(buildMesh)
buildOptionsFolder
  .add(settings, "wireframe")
  .name("Wireframe")
  .onFinishChange(buildMesh)
buildOptionsFolder.open()

function update() {
  stats.begin()
  cameraControls.update()
  renderer.render([object, camera], renderDevice)
  stats.end()

  requestAnimationFrame(update)
}

function updateView() {
  canvas.style.width = innerWidth + "px"
  canvas.style.height = innerHeight + "px"
  canvas.width = innerWidth * devicePixelRatio
  canvas.height = innerHeight * devicePixelRatio

  if (camera.projection instanceof PerspectiveProjection) {
    camera.projection.aspect = innerWidth / innerHeight
  }
}

function buildMesh() {
  const mesh = meshBuilder.build()
  if (settings.wireframe) {
    object.mesh = new WireframeBuilder(mesh).build()
    return
  }

  object.mesh = mesh
}

// demo-only performance monitor
const stats = new Stats()
stats.showPanel(1)
document.body.append(stats.dom)
stats.dom.removeAttribute("style")
stats.dom.classList.add("performance-monitor")