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156 | import * as THREE from 'three'
import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'
import Stats from 'three/examples/jsm/libs/stats.module'
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader'
import TWEEN from '@tweenjs/tween.js'
const scene = new THREE.Scene()
scene.add(new THREE.AxesHelper(5))
const camera = new THREE.PerspectiveCamera(
75,
window.innerWidth / window.innerHeight,
0.1,
1000
)
camera.position.set(-0.6, 0.45, 2)
const renderer = new THREE.WebGLRenderer()
//renderer.physicallyCorrectLights = true //deprecated
renderer.useLegacyLights = false //use this instead of setting physicallyCorrectLights=true property
renderer.shadowMap.enabled = true
renderer.setSize(window.innerWidth, window.innerHeight)
document.body.appendChild(renderer.domElement)
const controls = new OrbitControls(camera, renderer.domElement)
controls.enableDamping = true
const raycaster = new THREE.Raycaster()
const sceneMeshes: THREE.Object3D[] = []
let monkey: THREE.Object3D
const loader = new GLTFLoader()
loader.load(
'models/monkey.glb',
function (gltf) {
gltf.scene.traverse(function (child) {
if ((child as THREE.Mesh).isMesh) {
const m = child as THREE.Mesh
if (m.name === 'Suzanne') {
m.castShadow = true
monkey = m
} else {
// floor
m.receiveShadow = true
}
sceneMeshes.push(m)
}
if ((child as THREE.Light).isLight) {
const l = child as THREE.Light
l.castShadow = true
l.shadow.bias = -0.001
}
})
scene.add(gltf.scene)
chainTweens()
},
(xhr) => {
console.log((xhr.loaded / xhr.total) * 100 + '% loaded')
},
(error) => {
console.log(error)
}
)
function chainTweens() {
// Demonstrating a repeating sequence of tweens.
const changePositionZ = new TWEEN.Tween(monkey.position).to({ z: -2 }, 2000) // 2 seconds
const rotateY = new TWEEN.Tween(monkey.rotation).to(
{ y: Math.PI * 2 },
2000
)
const scaleXZ = new TWEEN.Tween(monkey.scale).to({ x: 2, z: 0.5 }, 2000)
const rotateZ = new TWEEN.Tween(monkey.rotation).to(
{ z: Math.PI * 2 },
2000
)
const resetScaleXZ = new TWEEN.Tween(monkey.scale).to({ x: 1, z: 1 }, 2000)
const resetPositionZ = new TWEEN.Tween(monkey.position).to({ z: 0 }, 2000)
const rotateX = new TWEEN.Tween(monkey.rotation).to(
{ x: Math.PI * 2 },
2000
)
const resetRotations = new TWEEN.Tween(monkey.rotation).to(
{ x: 0, y: 0, z: 0 },
0
) // 0 seconds results in an instant tween
changePositionZ.chain(rotateY)
rotateY.chain(scaleXZ)
scaleXZ.chain(rotateZ)
rotateZ.chain(resetScaleXZ)
resetScaleXZ.chain(resetPositionZ)
resetPositionZ.chain(rotateX)
rotateX.chain(resetRotations)
resetRotations.chain(changePositionZ) // begin the loop again
changePositionZ.start()
}
const mouse = new THREE.Vector2()
function onDoubleClick(event: MouseEvent) {
mouse.set(
(event.clientX / renderer.domElement.clientWidth) * 2 - 1,
-(event.clientY / renderer.domElement.clientHeight) * 2 + 1
)
raycaster.setFromCamera(mouse, camera)
const intersects = raycaster.intersectObjects(sceneMeshes, false)
if (intersects.length > 0) {
const p = intersects[0].point
new TWEEN.Tween(controls.target)
.to(
{
x: p.x,
y: p.y,
z: p.z,
},
500
)
.easing(TWEEN.Easing.Cubic.Out)
.start()
}
}
renderer.domElement.addEventListener('dblclick', onDoubleClick, false)
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight
camera.updateProjectionMatrix()
renderer.setSize(window.innerWidth, window.innerHeight)
render()
}
window.addEventListener('resize', onWindowResize, false)
const stats = new Stats()
document.body.appendChild(stats.dom)
function animate() {
requestAnimationFrame(animate)
controls.update()
TWEEN.update()
render()
stats.update()
}
function render() {
renderer.render(scene, camera)
}
animate()
|
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