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Add the Initial Scripts

Video Lecture

Add the Initial Scripts Add the Initial Scripts Add the Initial Scripts

Description

Inside the folder ./src/client add a new file called client.ts and add this script below.

./src/client/client.ts

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import * as THREE from 'three'

const scene = new THREE.Scene()

const camera = new THREE.PerspectiveCamera(
    75,
    window.innerWidth / window.innerHeight,
    0.1,
    1000
)
camera.position.z = 2

const renderer = new THREE.WebGLRenderer()
renderer.setSize(window.innerWidth, window.innerHeight)
document.body.appendChild(renderer.domElement)

const geometry = new THREE.BoxGeometry()
const material = new THREE.MeshBasicMaterial({
    color: 0x00ff00,
    wireframe: true,
})

const cube = new THREE.Mesh(geometry, material)
scene.add(cube)

window.addEventListener('resize', onWindowResize, false)
function onWindowResize() {
    camera.aspect = window.innerWidth / window.innerHeight
    camera.updateProjectionMatrix()
    renderer.setSize(window.innerWidth, window.innerHeight)
    render()
}

function animate() {
    requestAnimationFrame(animate)

    cube.rotation.x += 0.01
    cube.rotation.y += 0.01

    render()
}

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

animate()

./src/client/tsconfig.json

Also inside the folder ./src/client add a new file called tsconfig.json and add this script below.

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{
    "compilerOptions": {
        "moduleResolution": "node",
        "strict": true
    },
    "include": ["**/*.ts"]
}

Now when we look at ./src/client/client.ts again, the error messages are a little more clearer. Since three r126, typescript definitions are no longer included by default when you install Threejs using npm.

To install the Threejs type definitions,

npm install @types/three --save-dev

Note that the folders ./src/server and ./dist/server are not used at this time in the course. But we have added them in preparation when we will later.

Your folder structure and files should now resemble,

|-- Three.js-TypeScript-Tutorial
    |-- dist
        |-- client
            |-- index.html
        |-- server
    |-- node_modules
        |-- @types
            |-- three
                |-- (Several extra files and folders containing the Three.js definitions)
        |-- three
            |-- (Several extra files and folders containing the Three.js source code)
    |-- src
        |-- client
            |-- client.ts
            |-- tsconfig.json
        |-- server
    |-- package.json
    |-- package-lock.json