Three.js - 未捕获的ReferenceError:未定义THREE

Question

当我运行我的JavaScript代码.我收到以下错误"Uncaught ReferenceError:THREE is not defined".提到的路线是:

var renderer = new THREE.WebGLRenderer();

// I have attached the three.js library in the script tag. I don't know what seems to be problem.

var scene = new THREE.Scene();

var camera = new THREE.PerspectiveCamera(45, window.innerWidth/window.innerHeight, 0.1, 1000);
camera.position.set = (0, 0, 10);
camera.lookAt(camera.position);
scene.add(camera);

var geometry = new THREE.Geometry();
geometry.vertices.push(new THREE.Vector3(0.0, 1.0, 0.0));
geometry.vertices.push(new THREE.Vector3(-1.0, -1.0, 0.0));
geometry.vertices.push(new THREE.Vector3(1.0, -1.0, 0.0));
geometry.faces.push(new THREE.Face3(0, 1, 2));

var material = new THREE.BasicMeshMaterial({
    color: 0xFFFFFF,
    side: THREE.DoubleSide
});

var mesh = new THREE.Mesh(geometry, material);
mesh.position.set(-1.5, 0.0, 4.0);
scene.add(mesh);

function render() {
    renderer.render(scene, camera);
}

render();

Answer 1

你需要先包含three.js

<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r79/three.min.js"></script>