Ausführliche Erklärung des Lichtwurfs und der Objektinteraktion
import * as THREE from "three";
import {
OrbitControls } from "three/examples/jsm/controls/OrbitControls";
import gsap from "gsap";
import * as dat from "dat.gui";
const gui = new dat.GUI();
const scene = new THREE.Scene();
const camera = new THREE.PerspectiveCamera(
75,
window.innerWidth / window.innerHeight,
0.1,
300
);
const textureLoader = new THREE.TextureLoader();
const particlesTexture = textureLoader.load("./textures/particles/1.png");
camera.position.set(0, 0, 20);
scene.add(camera);
const cubeGeometry = new THREE.BoxBufferGeometry(1, 1, 1);
const material = new THREE.MeshBasicMaterial({
wireframe: true,
});
const redMaterial = new THREE.MeshBasicMaterial({
color: "#ff0000",
});
let cubeArr = [];
for (let i = -5; i < 5; i++) {
for (let j = -5; j < 5; j++) {
for (let z = -5; z < 5; z++) {
const cube = new THREE.Mesh(cubeGeometry, material);
cube.position.set(i, j, z);
scene.add(cube);
cubeArr.push(cube);
}
}
}
const raycaster = new THREE.Raycaster();
const mouse = new THREE.Vector2();
window.addEventListener("click", (event) => {
mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
mouse.y = -((event.clientY / window.innerHeight) * 2 - 1);
raycaster.setFromCamera(mouse, camera);
let result = raycaster.intersectObjects(cubeArr);
result.forEach((item) => {
item.object.material = redMaterial;
});
});
const renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.shadowMap.enabled = true;
renderer.physicallyCorrectLights = true;
document.body.appendChild(renderer.domElement);
const controls = new OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
const axesHelper = new THREE.AxesHelper(5);
scene.add(axesHelper);
const clock = new THREE.Clock();
function render() {
let time = clock.getElapsedTime();
controls.update();
renderer.render(scene, camera);
requestAnimationFrame(render);
}
render();
window.addEventListener("resize", () => {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setPixelRatio(window.devicePixelRatio);
});