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August 4, 2023 04:39
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"use client"; | |
import { useCallback, useRef, useState } from "react"; | |
import * as THREE from "three"; | |
// import { OrbitControls } from "three/examples/jsm/controls/OrbitControls.js"; | |
import { OrbitControls } from "three/addons/controls/OrbitControls.js"; | |
import Stats from "stats.js"; | |
import { GLTFLoader } from "three/addons/loaders/GLTFLoader.js"; | |
import { gsap } from "gsap"; | |
import styles from "./page.module.css"; | |
const MyCanvas = () => { | |
const loadingBarRef = useRef(null); | |
// const [progressRatio, setProgressBarRatio] = useState(0); | |
const canvasRef = useCallback((node) => { | |
if (node != null) { | |
const scene = new THREE.Scene(); | |
const stats = new Stats(); | |
stats.showPanel(0); | |
document.body.appendChild(stats.dom); | |
const overlayGeometry = new THREE.PlaneGeometry(2, 2, 1, 1); | |
const overlayMaterial = new THREE.ShaderMaterial({ | |
transparent: true, | |
uniforms: { | |
uAlpha: { | |
value: 1, | |
}, | |
}, | |
vertexShader: ` | |
void main() | |
{ | |
gl_Position = vec4(position, 1.0); | |
} | |
`, | |
fragmentShader: ` | |
uniform float uAlpha; | |
void main(){ | |
gl_FragColor = vec4(0.0,0.0,0.0,uAlpha); | |
} | |
`, | |
}); | |
const overlay = new THREE.Mesh(overlayGeometry, overlayMaterial); | |
const loadingManager = new THREE.LoadingManager( | |
() => { | |
console.log("loaded"); | |
window.setTimeout(() => {}, 500); | |
gsap.delayedCall(0.5, () => { | |
gsap.to(overlayMaterial.uniforms.uAlpha, { value: 0, duration: 3 }); | |
if (loadingBarRef.current !== null) { | |
loadingBarRef.current.style.transform = ""; | |
loadingBarRef.current.style.transformOrigin = "top right"; | |
loadingBarRef.current.style.transition = "1.5s ease-in-out"; | |
} | |
}); | |
}, | |
(itemUrl, itemsLoaded, itemsTotal) => { | |
const progressRatio = itemsLoaded / itemsTotal; | |
// setProgressBarRatio(itemsLoaded / itemsTotal); | |
if (loadingBarRef.current !== null) { | |
console.log("in progresss"); | |
loadingBarRef.current.style.transform = `scaleX(${progressRatio})`; | |
// loadingBarRef.current.style.backgroundColor = "blue"; | |
console.log(progressRatio); | |
} | |
} | |
); | |
const gltfLoader = new GLTFLoader(loadingManager); | |
const cubeTextureLoader = new THREE.CubeTextureLoader(loadingManager); | |
const environmentMap = cubeTextureLoader.load([ | |
"/textures/environmentMaps/0/px.jpg", | |
"/textures/environmentMaps/0/nx.jpg", | |
"/textures/environmentMaps/0/py.jpg", | |
"/textures/environmentMaps/0/ny.jpg", | |
"/textures/environmentMaps/0/pz.jpg", | |
"/textures/environmentMaps/0/nz.jpg", | |
]); | |
scene.background = environmentMap; | |
scene.environment = environmentMap; | |
const updateAllMaterials = () => { | |
scene.traverse((child) => { | |
if ( | |
child instanceof THREE.Mesh && | |
child.material instanceof THREE.MeshStandardMaterial | |
) { | |
// child.material.envMap = environmentMap | |
child.material.envMapIntensity = 2.5; | |
child.material.needsUpdate = true; | |
child.castShadow = true; | |
child.receiveShadow = true; | |
} | |
}); | |
}; | |
gltfLoader.load("/models/FlightHelmet/glTF/FlightHelmet.gltf", (gltf) => { | |
gltf.scene.scale.set(10, 10, 10); | |
gltf.scene.position.set(0, -4, 0); | |
gltf.scene.rotation.y = Math.PI * 0.5; | |
scene.add(gltf.scene); | |
updateAllMaterials(); | |
}); | |
const directionalLight = new THREE.DirectionalLight("#ffffff", 3); | |
directionalLight.castShadow = true; | |
directionalLight.shadow.camera.far = 15; | |
directionalLight.shadow.mapSize.set(1024, 1024); | |
directionalLight.shadow.normalBias = 0.05; | |
directionalLight.position.set(0.25, 3, -2.25); | |
scene.add(directionalLight); | |
scene.add(overlay); | |
const sizes = { | |
width: window.innerWidth, | |
height: window.innerHeight, | |
}; | |
// Camera | |
const camera = new THREE.PerspectiveCamera( | |
75, | |
sizes.width / sizes.height, | |
0.1, | |
100 | |
); | |
camera.position.set(4, 1, -4); | |
scene.add(camera); | |
const controls = new OrbitControls(camera, node); | |
controls.enableDamping = true; | |
// Renderer | |
const renderer = new THREE.WebGLRenderer({ | |
canvas: node, | |
powerPreference: "high-performance", | |
antialias: true, | |
}); | |
renderer.toneMapping = THREE.ReinhardToneMapping; | |
renderer.toneMappingExposure = 3; | |
renderer.shadowMap.enabled = true; | |
renderer.shadowMap.type = THREE.PCFSoftShadowMap; | |
renderer.setSize(sizes.width, sizes.height); | |
renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2)); | |
window.addEventListener("resize", () => { | |
sizes.width = window.innerWidth; | |
sizes.height = window.innerHeight; | |
camera.aspect = sizes.width / sizes.height; | |
camera.updateProjectionMatrix(); | |
renderer.setSize(sizes.width, sizes.height); | |
renderer.setPixelRatio(Math.min(window.devicePixelRatio, 2)); | |
}); | |
window.addEventListener("dblclick", () => { | |
const fullscreenElement = | |
document.fullscreenElement || document.webkitFullscreenElement; | |
if (!fullscreenElement) { | |
if (node.requestFullscreen) { | |
node.requestFullscreen(); | |
} else if (canvasRef.webkitRequestFullscreen) { | |
node.webkitRequestFullscreen(); | |
} | |
} else { | |
if (document.exitFullscreen) { | |
document.exitFullscreen(); | |
} else if (document.webkitExitFullscreen) { | |
document.webkitExitFullscreen(); | |
} | |
} | |
}); | |
const clock = new THREE.Clock(); | |
const tick = () => { | |
stats.begin(); | |
const elapsedTime = clock.getElapsedTime(); | |
controls.update(); | |
renderer.render(scene, camera); | |
window.requestAnimationFrame(tick); | |
stats.end(); | |
}; | |
tick(); | |
} | |
}, []); | |
return ( | |
<> | |
<div | |
ref={loadingBarRef} | |
className="loading-bar" | |
style={{ | |
position: "absolute", | |
top: "50%", | |
width: "100%", | |
height: "2px", | |
background: "black", | |
transform: `scaleX(0)`, | |
transformOrigin: "top left", | |
transition: "transform 0.5s", | |
willChange: "transform", | |
}} | |
></div> | |
<canvas | |
style={{ position: "fixed", top: 0, left: 0, outline: "none" }} | |
ref={canvasRef} | |
className="webgl" | |
></canvas> | |
</> | |
); | |
}; | |
export default MyCanvas; |
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