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202 | import * as THREE from 'three'
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'
import Stats from 'three/examples/jsm/libs/stats.module'
function lerp(x: number, y: number, a: number): number {
const r = (1 - a) * x + a * y
return r < 0.001 ? 0 : r
}
class pickable extends THREE.Mesh {
hovered = false
clicked = false
originalColor: THREE.Color
colorTo = new THREE.Color(0xff2244)
constructor(geometry: THREE.BufferGeometry, material: THREE.Material) {
super()
this.geometry = geometry
this.material = material
this.originalColor = (
material as THREE.MeshPhysicalMaterial
).color.clone()
this.castShadow = true
}
update(delta: number): void {
this.rotation.x += delta
this.rotation.y += delta
const m = this.material as THREE.MeshPhysicalMaterial
this.hovered
? (m.color.lerp(this.colorTo, 0.1),
(m.thickness = lerp(m.thickness, 3, 0.1)),
(m.reflectivity = lerp(m.reflectivity, 1, 0.1)),
(m.roughness = lerp(m.roughness, 0.1, 0.1)),
(m.clearcoat = lerp(m.clearcoat, 0.1, 0.1)),
(m.transmission = lerp(m.transmission, 0.99, 0.1)),
(m.ior = lerp(m.ior, 1.1, 0.1)))
: (m.color.lerp(this.originalColor, 0.1),
(m.thickness = lerp(m.thickness, 0, 0.1)),
(m.reflectivity = lerp(m.reflectivity, 0, 0.1)),
(m.roughness = lerp(m.roughness, 1.0, 0.1)),
(m.clearcoat = lerp(m.clearcoat, 0, 0.1)),
(m.transmission = lerp(m.transmission, 0, 0.1)),
(m.ior = lerp(m.ior, 1.5, 0.1)))
this.clicked
? this.scale.set(
lerp(this.scale.x, 1.5, 0.1),
lerp(this.scale.y, 1.5, 0.1),
lerp(this.scale.z, 1.5, 0.1)
)
: this.scale.set(
lerp(this.scale.x, 1.0, 0.1),
lerp(this.scale.y, 1.0, 0.1),
lerp(this.scale.z, 1.0, 0.1)
)
}
}
const raycaster = new THREE.Raycaster()
const pickables: pickable[] = []
let intersects: THREE.Intersection[]
const scene = new THREE.Scene()
const spotLight = new THREE.SpotLight(0xffffff, 500)
spotLight.position.set(5, 5, 5)
spotLight.angle = 0.3
spotLight.penumbra = 0.5
spotLight.castShadow = true
spotLight.shadow.mapSize.width = 512
spotLight.shadow.mapSize.height = 512
spotLight.shadow.bias = -0.001
spotLight.shadow.radius = 20
spotLight.shadow.blurSamples = 10
spotLight.shadow.camera.far = 15
scene.add(spotLight)
const camera = new THREE.PerspectiveCamera(
75,
window.innerWidth / window.innerHeight,
0.1,
100
)
camera.position.y = 2
camera.position.z = 4
const renderer = new THREE.WebGLRenderer({ antialias: true })
renderer.setSize(window.innerWidth, window.innerHeight)
renderer.shadowMap.enabled = true
renderer.shadowMap.type = THREE.VSMShadowMap
renderer.domElement.addEventListener('pointerdown', onClick, false)
document.body.appendChild(renderer.domElement)
document.addEventListener('mousemove', onDocumentMouseMove, false)
const controls = new OrbitControls(camera, renderer.domElement)
controls.enableDamping = true
const envTexture = new THREE.CubeTextureLoader().load([
'img/px_25.jpg',
'img/nx_25.jpg',
'img/py_25.jpg',
'img/ny_25.jpg',
'img/pz_25.jpg',
'img/nz_25.jpg',
])
envTexture.mapping = THREE.CubeReflectionMapping
scene.environment = envTexture
const cube = new pickable(
new THREE.BoxGeometry(),
new THREE.MeshPhysicalMaterial({ color: 0xff8800 })
)
cube.position.set(-2, 0, 0)
scene.add(cube)
pickables.push(cube)
const cylinder = new pickable(
new THREE.CylinderGeometry(0.66, 0.66),
new THREE.MeshPhysicalMaterial({ color: 0x008800 })
)
scene.add(cylinder)
pickables.push(cylinder)
const pyramid = new pickable(
new THREE.TetrahedronGeometry(),
new THREE.MeshPhysicalMaterial({ color: 0x0088ff })
)
pyramid.position.set(2, 0, 0)
scene.add(pyramid)
pickables.push(pyramid)
const floor = new THREE.Mesh(
new THREE.PlaneGeometry(10, 10),
new THREE.MeshPhysicalMaterial()
)
floor.rotateX(-Math.PI / 2)
floor.position.y = -1.25
floor.receiveShadow = true
scene.add(floor)
function onDocumentMouseMove(event: MouseEvent) {
raycaster.setFromCamera(
{
x: (event.clientX / renderer.domElement.clientWidth) * 2 - 1,
y: -(event.clientY / renderer.domElement.clientHeight) * 2 + 1,
},
camera
)
pickables.forEach((p) => (p.hovered = false))
intersects = raycaster.intersectObjects(pickables, false)
if (intersects) (intersects[0].object as pickable).hovered = true
}
function onClick(event: MouseEvent) {
raycaster.setFromCamera(
{
x: (event.clientX / renderer.domElement.clientWidth) * 2 - 1,
y: -(event.clientY / renderer.domElement.clientHeight) * 2 + 1,
},
camera
)
intersects = raycaster.intersectObjects(pickables, false)
intersects.forEach((i) => {
;(i.object as pickable).clicked = !(i.object as pickable).clicked
})
}
const stats = new Stats()
document.body.appendChild(stats.dom)
const clock = new THREE.Clock()
let delta = 0
function render() {
renderer.render(scene, camera)
}
function animate() {
requestAnimationFrame(animate)
controls.update()
delta = clock.getDelta()
pickables.forEach((p) => {
p.update(delta)
})
render()
stats.update()
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight
camera.updateProjectionMatrix()
renderer.setSize(window.innerWidth, window.innerHeight)
render()
}
window.addEventListener('resize', onWindowResize, false)
animate()
|
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