Display an array of threejs objects

[mansa]

Hello, I want to render a cube with the length of an array and display it in the react canvas, but it is not possible

import React, {useState} from 'react'

وارد کردن { Canvas } از '@react-three/fiber'

 

عملکرد برنامه () {

 

  const [ توله , setCub ] = useState ([ 2 , 5 , 6 , 7 ])

 

  بازگشت (

     < بوم >

        < ambientLight />

         { توله . نقشه (( e , i ) =>

           < mesh key = { i } >

             < boxGeometry />

             < meshStandardMaterial color = 'hotpink' />

           </ mesh >

         ) }

     </ بوم >

  )

}

 

صادرات برنامه پیش فرض

[Newsida]

Rendering a cube with the length of an array and displaying it in a React canvas is indeed possible. You can achieve this by using libraries like Three.js for 3D rendering and integrating it with React. Here's a simplified example of how you can render a cube based on the length of an array:

 

import React, { useRef, useEffect } from 'react';
import * as THREE from 'three';

const CubeCanvas = ({ array }) => {
  const canvasRef = useRef();

  useEffect(() => {
    const canvas = canvasRef.current;

    // Set up Three.js scene
    const scene = new THREE.Scene();
    const camera = new THREE.PerspectiveCamera(75, canvas.clientWidth / canvas.clientHeight, 0.1, 1000);
    const renderer = new THREE.WebGLRenderer({ canvas });
    renderer.setSize(canvas.clientWidth, canvas.clientHeight);

    // Create cube geometry
    const cubeGeometry = new THREE.BoxGeometry(array.length, array.length, array.length);
    const cubeMaterial = new THREE.MeshBasicMaterial({ color: 0x00ff00 });
    const cube = new THREE.Mesh(cubeGeometry, cubeMaterial);
    scene.add(cube);

    // Position camera
    camera.position.z = 5;

    // Render loop
    const animate = () => {
      requestAnimationFrame(animate);

      // Rotate cube
      cube.rotation.x += 0.01;
      cube.rotation.y += 0.01;

      // Render scene
      renderer.render(scene, camera);
    };

    animate();

    // Cleanup
    return () => {
      renderer.dispose();
      scene.remove(cube);
    };
  }, [array]);

  return <canvas ref={canvasRef} />;
};

export default CubeCanvas;
 

n this example:

We use the useEffect hook to set up the Three.js scene when the component mounts.
The array prop is used to determine the dimensions of the cube.
Inside the useEffect hook, we create a cube with dimensions based on the length of the array.
We then set up a render loop to animate and render the cube.
Finally, we return a canvas element with a ref to attach the Three.js renderer.
You can use this CubeCanvas component in your React application by passing an array prop representing the length of the cube. For example:

jsx
Copy code
<CubeCanvas array={[5, 5, 5]} />
This would render a cube with dimensions 5x5x5. Adjust the array values as needed based on your requirements.