我想知道当您将鼠标移到该网站(http://www.cryptarismission.com/)上时如何面对不同的方向。
在他们的主页上,似乎当您移动鼠标时,场景会在很少的轴旋转中平稳地跟随。
使用Three.js,这件事背后的想法是什么?我知道您可以旋转对象,场景或相机,但不确定旋转什么。我正在考虑旋转整个场景容器,但我不知道这是否很好。
答案 0 :(得分:0)
您可以根据鼠标位置在每个循环中更改相机位置并调用lookAt,也可以更改整个场景旋转。这是第一种方法的工作原理。
<!DOCTYPE html>
<html lang="en">
<head>
<title>ThreeJS full scene minimal rotation</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/96/three.min.js"></script>
<style>
body {
margin: 0px;
padding: 0px;
overflow: hidden;
}
</style>
</head>
<body>
<canvas></canvas>
</body>
<script>
var camera, scene, renderer, stats, windowHalfX = window.innerWidth / 2,
windowHalfY = window.innerHeight / 2,
mouseX = 0,
mouseY = 0;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 2000);
camera.position.set(30, 30, 30)
scene = new THREE.Scene();
scene.add(new THREE.Mesh(
new THREE.BoxGeometry(5, 5, 5),
new THREE.MeshBasicMaterial({ color: 0x00ff00 })
));
renderer = new THREE.WebGLRenderer({ antialias: true, canvas: document.querySelector('canvas') });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
window.addEventListener('mousemove', onDocumentMouseMove, false);
}
function onDocumentMouseMove(event) {
mouseX = (event.clientX - windowHalfX) / 10;
mouseY = (event.clientY - windowHalfY) / 10;
}
function animate() {
requestAnimationFrame(animate);
render();
}
function render() {
camera.position.x += (mouseX - camera.position.x) * .05;
camera.position.y += (-mouseY - camera.position.y) * .05;
camera.lookAt(scene.position);
renderer.render(scene, camera);
}
</script>
</html>