【发布时间】:2021-08-11 02:08:31
【问题描述】:
以下是代码,旋转网格不会在阴影材质上投射任何阴影。 planeBufferGeometry 似乎在那里。 -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- ------------------
import React from 'react';
import './App.scss';
import {Canvas, useFrame} from 'react-three-fiber';
const SpinningMesh = ({position, args, color}) => {
const mesh = React.useRef(null);
useFrame(()=> (mesh.current.rotation.x = mesh.current.rotation.y += 0.01))
return(
<mesh castShadow ref={mesh} position={position}>
<boxBufferGeometry attach='geometry' args={args}/>
<meshStandardMaterial attach='material' color={color}/>
</mesh>
);
}
function App() {
return (
<>
<Canvas shadowMap colorManagement camera={{position:[-5,2,10], fov:60}}>
<ambientLight intensity={0.3}/>
<directionalLight
castShadow
position={[0,10,0]}
intensity={1.5}
shadow-mapSize-width={1024}
shadow-mapSize-height={1024}
shadow-camera-far={50}
shadow-camera-left = {-10}
shadow-camera-right = {10}
shadow-camera-top = {10}
shadow-camera-bottom = {-10}
/>
<pointLight position={[-10,0,-20]} intensity={.5}/>
<pointLight position={[0,-10,0]} intensity={1.5}/>
<group>
<mesh receiveShadow rotation={[-Math.PI / 2 , 0 , 0]} position={[0,-3,0]}>
<planeBufferGeometry attach='geometry' args={[100,100]}/>
<shadowMaterial attach='material' opacity={0.3} color="blue"/>
</mesh>
</group>
<SpinningMesh position={[0,1,0]} args={[3,2,1]} color='lightblue'/>
<SpinningMesh position={[-2,1,-5]} color='pink'/>
<SpinningMesh position={[5,1,-2]} color='pink'/>
</Canvas>
</>
);
}
export default App;
【问题讨论】:
-
hmm 有趣,react 调试工具可能会有所帮助
-
命名空间是 @react-three/fiber 而不是 react-three-fiber。阴影的道具称为“阴影”。网格需要 castShadow 和可选的 receiveShadow 道具,材质为 receiveShadow 道具。这是一个例子:codesandbox.io/s/gltf-animations-re-used-k8phr
标签: reactjs three.js shadow react-three-fiber