我现在开始学习 Three.js，并首先尝试做一些非常基本的事情，例如创建一个盒子，然后在其上应用变换矩阵，在 Z 轴上旋转 15 度:
<html>
<head>
<title>My first Three.js app</title>
<style>
body {
margin: 0;
}
canvas {
width: 100%;
height: 100%;
}
</style>
</head>
<body>
<script src="scripts/three.js"></script>
<script>
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 100000);
var renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
var geometry = new THREE.BoxGeometry(1, 0.5, 0.1);
var material = new THREE.MeshBasicMaterial({ color: 0x00ff00 });
material.wireframe = true;
var cube = new THREE.Mesh(geometry, material);
cube.matrixAutoUpdate = false;
var matrix = new THREE.Matrix4(0.9659, 0.2588, 0.000, 0,
-0.2588, 0.9659, 0.000, 0,
0.0000, 0.0000, 1.000, 0,
0.0000, 0.0000, 0.000, 1);
cube.applyMatrix(matrix);
scene.add(cube);
camera.position.z = 5;
//camera.position.x = 5;
//camera.position.y = 5;
var n1 = cube.matrix.elements;
camera.lookAt(new THREE.Vector3(0, 0, 0));
var render = function () {
requestAnimationFrame(render);
//cube.rotation.x += 0.01;
//cube.rotation.y += 0.01;
renderer.render(scene, camera);
};
render();
</script>
</body>
</html>
问题是盒子根本没有改变，它保持在相同的位置/方向。
如果我检查 Applied_matrix 变量，它会返回一个单位矩阵，就像我从未应用过矩阵一样。
我错过了什么？
最佳答案
控制台中出现警告:THREE.Matrix4:构造函数不再读取参数。使用 .set() 代替。
所以请改为:
var matrix = new THREE.Matrix4(0.9659, 0.2588, 0.000, 0,
-0.2588, 0.9659, 0.000, 0,
0.0000, 0.0000, 1.000, 0,
0.0000, 0.0000, 0.000, 1);
尝试
var matrix = new THREE.Matrix4().set((0.9659, 0.2588, 0.000, 0,
-0.2588, 0.9659, 0.000, 0,
0.0000, 0.0000, 1.000, 0,
0.0000, 0.0000, 0.000, 1);
关于three.js - 转换矩阵不适用于 Three.js，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/27338947/