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reactjsthree.jsshadowreact-three-fiber

React three fiber Shadow material not working


The following is the code, the spinning mesh are not casting any shadows on the shadow material. The planeBufferGeometry seems to be there. -----------------------------------------------------------------------------------------------------------------------------------------------------------------------

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;

output


Solution

  • <Canvas shadows colorManagement camera={{position:[-5,2,10], fov:60}}>

    Use shadows attribute rather than using shadowMap in Canvas