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Three.js and TypeScript
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Design Patterns in TypeScript
Kindle Edition Paperback



Design Patterns in Python
Kindle Edition Paperback



Add the Initial Scripts

Video Lecture

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": {
        "target": "ES6",
        "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