three.jsでatmosphereを作る
今回は、atmpsphere+three-vrmでキャラクターを表示する方法を紹介。
非常に良いpackageを見つけたので、それを使います。
https://github.com/takram-design-engineering/three-geospatial
three-vrm+vrmaの最小構成
vrmを表示の上、animation(.vrma)を適用。
{
"name": "min-react-vrm",
"version": "1.0.0",
"description": "Minimal VRM Animation Player",
"type": "module",
"scripts": {
"dev": "vite",
"build": "vite build",
"preview": "vite preview"
},
"dependencies": {
"@pixiv/three-vrm": "^3.4.4",
"@pixiv/three-vrm-animation": "^3.4.4",
"@react-three/drei": "^10.7.7",
"@react-three/fiber": "^9.4.0",
"react": "^19.0.0",
"react-dom": "^19.0.0",
"three": "^0.181.2"
},
"devDependencies": {
"@types/react": "^19.0.0",
"@types/react-dom": "^19.0.0",
"@vitejs/plugin-react": "^4.3.4",
"vite": "^6.0.1"
}
}
import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
export default defineConfig({
plugins: [react()],
})
import React from 'react'
import ReactDOM from 'react-dom/client'
import App from './App'
ReactDOM.createRoot(document.getElementById('root')).render(
<React.StrictMode>
<App />
</React.StrictMode>,
)
import React, { useEffect, useRef } from 'react';
import { Canvas, useFrame, useLoader } from '@react-three/fiber';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader';
import { VRMLoaderPlugin, VRMUtils } from '@pixiv/three-vrm';
import { createVRMAnimationClip, VRMAnimationLoaderPlugin } from '@pixiv/three-vrm-animation';
import { AnimationMixer, GridHelper, AxesHelper } from 'three';
import { OrbitControls } from '@react-three/drei';
const VRM_URL = '/ai.vrm';
const VRMA_URL = '/idle.vrma';
function Avatar() {
const mixerRef = useRef(null);
const vrmRef = useRef(null);
const gltf = useLoader(GLTFLoader, VRM_URL, (loader) => {
loader.register((parser) => new VRMLoaderPlugin(parser));
});
const vrma = useLoader(GLTFLoader, VRMA_URL, (loader) => {
loader.register((parser) => new VRMAnimationLoaderPlugin(parser));
});
useEffect(() => {
const vrm = gltf.userData.vrm;
vrmRef.current = vrm;
VRMUtils.removeUnnecessaryJoints(vrm.scene);
vrm.humanoid.resetPose();
vrm.scene.rotation.y = Math.PI;
if (vrma.userData.vrmAnimations && vrma.userData.vrmAnimations.length > 0) {
const clip = createVRMAnimationClip(vrma.userData.vrmAnimations[0], vrm);
mixerRef.current = new AnimationMixer(vrm.scene);
mixerRef.current.clipAction(clip).play();
}
}, [gltf, vrma]);
useFrame((state, delta) => {
if (mixerRef.current) mixerRef.current.update(delta);
if (vrmRef.current) vrmRef.current.update(delta);
});
return <primitive object={gltf.scene} />;
}
export default function App() {
return (
<div style={{ width: '100vw', height: '100vh' }}>
<Canvas camera={{ position: [0, 1.5, 3] }}>
<color attach="background" args={['#202020']} />
<directionalLight position={[1, 1, 1]} intensity={1.5} />
<ambientLight intensity={0.5} />
<primitive object={new GridHelper(10, 10)} />
<primitive object={new AxesHelper(1)} />
<React.Suspense fallback={null}>
<Avatar />
</React.Suspense>
<OrbitControls target={[0, 1, 0]} />
</Canvas>
</div>
);
}
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>VRM Animation Preview</title>
<style>
html, body, #root { width: 100%; height: 100%; margin: 0; padding: 0; overflow: hidden; }
</style>
</head>
<body>
<div id="root"></div>
<script type="module" src="/src/main.jsx"></script>
</body>
</html>
これでnpm run devすれば、VRMが表示され、vrmaのアニメーションが再生されます。
atmosphereの追加
{
"name": "react-vrm-atmosphere",
"version": "1.0.0",
"type": "module",
"scripts": {
"dev": "vite",
"build": "vite build",
"preview": "vite preview"
},
"dependencies": {
"@pixiv/three-vrm": "^3.4.4",
"@pixiv/three-vrm-animation": "^3.4.4",
"@react-three/drei": "^10.7.7",
"@react-three/fiber": "^9.4.0",
"@react-three/postprocessing": "^3.0.4",
"@takram/three-atmosphere": "^0.15.1",
"@takram/three-clouds": "^0.5.2",
"react": "^19.0.0-rc.1",
"react-dom": "^19.0.0-rc.1",
"three": "^0.181.2"
},
"devDependencies": {
"@vitejs/plugin-react": "^4.2.1",
"vite": "^5.1.0"
}
}
import React, { useEffect, useRef, Suspense } from 'react';
import { Canvas, useFrame, useLoader, useThree } from '@react-three/fiber';
import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader';
import { VRMLoaderPlugin, VRMUtils } from '@pixiv/three-vrm';
import { createVRMAnimationClip, VRMAnimationLoaderPlugin } from '@pixiv/three-vrm-animation';
import { AnimationMixer, Vector3 } from 'three';
import { OrbitControls, PerspectiveCamera } from '@react-three/drei';
import { EffectComposer, ToneMapping } from '@react-three/postprocessing';
import { ToneMappingMode } from 'postprocessing';
import * as THREE from 'three';
import { AerialPerspective, Atmosphere } from '@takram/three-atmosphere/r3f';
import { Clouds, CloudLayer } from '@takram/three-clouds/r3f';
const VRM_URL = '/ai.vrm';
const VRMA_URL = '/fly.vrma';
const EARTH_RADIUS = 6378137;
const FIXED_DATE = new Date('2024-06-21T12:00:00');
function ExposureController() {
const { gl } = useThree();
useEffect(() => {
gl.toneMapping = THREE.NoToneMapping;
gl.toneMappingExposure = 10.0;
}, [gl]);
return null;
}
function AtmosphereLayer() {
const cameraRef = useRef();
return (
<Canvas>
<ExposureController />
<PerspectiveCamera
makeDefault
ref={cameraRef}
position={[0, EARTH_RADIUS + 2000, 0]}
near={1}
far={10000000}
fov={45}
/>
<directionalLight
position={[0, 1, 0]}
intensity={3.0}
/>
<Atmosphere date={FIXED_DATE}>
<EffectComposer multisampling={0} disableNormalPass={false}>
<Clouds disableDefaultLayers>
<CloudLayer
channel='r'
altitude={1500}
height={500}
densityScale={0.5}
/>
<CloudLayer
channel='g'
altitude={2500}
height={800}
/>
<CloudLayer
channel='b'
altitude={7500}
height={500}
densityScale={0.003}
shapeAmount={0.4}
/>
</Clouds>
<AerialPerspective sky sunLight skyLight />
<ToneMapping mode={ToneMappingMode.AGX} />
</EffectComposer>
</Atmosphere>
<FlyOverCamera />
</Canvas>
);
}
function FlyOverCamera() {
useFrame((state) => {
const t = state.clock.getElapsedTime() * 0.05;
const altitude = 2000;
const radius = 5000;
state.camera.position.x = Math.sin(t) * radius;
state.camera.position.z = Math.cos(t) * radius;
state.camera.position.y = EARTH_RADIUS + altitude;
const lookAtTarget = new Vector3(
Math.sin(t + 0.1) * radius,
EARTH_RADIUS + altitude,
Math.cos(t + 0.1) * radius
);
state.camera.lookAt(lookAtTarget);
});
return null;
}
function VrmCharacter() {
const mixerRef = useRef(null);
const vrmRef = useRef(null);
const gltf = useLoader(GLTFLoader, VRM_URL, (loader) => {
loader.register((parser) => new VRMLoaderPlugin(parser));
});
const vrma = useLoader(GLTFLoader, VRMA_URL, (loader) => {
loader.register((parser) => new VRMAnimationLoaderPlugin(parser));
});
useEffect(() => {
const vrm = gltf.userData.vrm;
vrmRef.current = vrm;
VRMUtils.removeUnnecessaryJoints(vrm.scene);
vrm.humanoid.resetPose();
vrm.scene.rotation.y = Math.PI;
if (vrma.userData.vrmAnimations?.[0]) {
const clip = createVRMAnimationClip(vrma.userData.vrmAnimations[0], vrm);
mixerRef.current = new AnimationMixer(vrm.scene);
mixerRef.current.clipAction(clip).play();
}
}, [gltf, vrma]);
useFrame((state, delta) => {
mixerRef.current?.update(delta);
vrmRef.current?.update(delta);
});
return <primitive object={gltf.scene} />;
}
function AvatarLayer() {
return (
<Canvas gl={{ alpha: true, antialias: true }}>
<PerspectiveCamera makeDefault position={[0, 1.5, 3]} fov={30} />
<directionalLight position={[-1, 1, 1]} intensity={1.5} />
<ambientLight intensity={1.0} />
<spotLight position={[0, 2, -2]} intensity={3} color="#ffdcb4" />
<Suspense fallback={null}>
<VrmCharacter />
</Suspense>
<OrbitControls target={[0, 1.2, 0]} />
</Canvas>
);
}
export default function App() {
const layerStyle = {
position: 'absolute',
top: 0,
left: 0,
width: '100%',
height: '100%',
};
return (
<div style={{ position: 'relative', width: '100vw', height: '100vh', background: '#000' }}>
<div style={{ ...layerStyle, zIndex: 0 }}>
<AtmosphereLayer />
</div>
<div style={{ ...layerStyle, zIndex: 1, pointerEvents: 'none' }}>
<div style={{ width: '100%', height: '100%', pointerEvents: 'auto' }}>
<AvatarLayer />
</div>
</div>
</div>
);
}