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Materials

Video Lecture

Materials Materials Materials Materials

Description

An introduction to the Three.js Material base class.

All these classes below inherit methods and properties from the Material base class.

Start Code

This is the code at the beginning of the lesson.

./dist/client/index.html

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<!DOCTYPE html>
<html>

<head>
    <title>Three.js TypeScript Tutorials by Sean Bradley</title>
    <style>
        body {
            overflow: hidden;
            margin: 0px;
        }
    </style>
</head>

<body>
    <script type="module" src="client.js"></script>
</body>

</html>

./src/client/client.ts

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// If using Relative Import References
import * as THREE from '/build/three.module.js'
import { OrbitControls } from '/jsm/controls/OrbitControls'
import Stats from '/jsm/libs/stats.module'
import { GUI } from '/jsm/libs/dat.gui.module'

// If using Module Specifiers
//import * as THREE from 'three'
//import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'
//import Stats from 'three/examples/jsm/libs/stats.module'
//import { GUI } from 'three/examples/jsm/libs/dat.gui.module'

const scene: THREE.Scene = new THREE.Scene()
const axesHelper = new THREE.AxesHelper(5)
scene.add(axesHelper)

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

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

const controls = new OrbitControls(camera, renderer.domElement)
//controls.addEventListener('change', render)

const boxGeometry: THREE.BoxGeometry = new THREE.BoxGeometry()
const sphereGeometry: THREE.SphereGeometry = new THREE.SphereGeometry()
const icosahedronGeometry: THREE.IcosahedronGeometry = new THREE.IcosahedronGeometry(1,0)
const planeGeometry: THREE.PlaneGeometry = new THREE.PlaneGeometry()
const torusKnotGeometry: THREE.TorusKnotGeometry = new THREE.TorusKnotGeometry()

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

const cube: THREE.Mesh = new THREE.Mesh(boxGeometry, material)
cube.position.x = 5
scene.add(cube)

const sphere: THREE.Mesh = new THREE.Mesh(sphereGeometry, material)
sphere.position.x = 3
scene.add(sphere)

const icosahedron: THREE.Mesh = new THREE.Mesh(icosahedronGeometry, material)
icosahedron.position.x = 0
scene.add(icosahedron)

const plane: THREE.Mesh = new THREE.Mesh(planeGeometry, material)
plane.position.x = -2
scene.add(plane)

const torusKnot: THREE.Mesh = new THREE.Mesh(torusKnotGeometry, material)
torusKnot.position.x = -5
scene.add(torusKnot)

camera.position.z = 3

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

const stats = Stats()
document.body.appendChild(stats.dom)

// var options = {
//     side: {
//         "FrontSide": THREE.FrontSide,
//         "BackSide": THREE.BackSide,
//         "DoubleSide": THREE.DoubleSide,
//     }
// }
const gui = new GUI()
const materialFolder = gui.addFolder('THREE.Material')
// materialFolder.add(material, 'transparent')
// materialFolder.add(material, 'opacity', 0, 1, 0.01)
// materialFolder.add(material, 'depthTest')
// materialFolder.add(material, 'depthWrite')
// materialFolder.add(material, 'alphaTest', 0, 1, 0.01).onChange(() => updateMaterial())
// materialFolder.add(material, 'visible')
// materialFolder.add(material, 'side', options.side).onChange(() => updateMaterial())
materialFolder.open()

// function updateMaterial() {
//     material.side = Number(material.side)
//     material.needsUpdate = true
// }

var animate = function () {
    requestAnimationFrame(animate)

    render()

    stats.update()
};

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

Final Code

./src/client/client.ts

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// If using Relative Import References
import * as THREE from '/build/three.module.js'
import { OrbitControls } from '/jsm/controls/OrbitControls'
import Stats from '/jsm/libs/stats.module'
import { GUI } from '/jsm/libs/dat.gui.module'

// If using Module Specifiers
//import * as THREE from 'three'
//import { OrbitControls } from 'three/examples/jsm/controls/OrbitControls'
//import Stats from 'three/examples/jsm/libs/stats.module'
//import { GUI } from 'three/examples/jsm/libs/dat.gui.module'

const scene: THREE.Scene = new THREE.Scene()
const axesHelper = new THREE.AxesHelper(5)
scene.add(axesHelper)

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

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

const controls = new OrbitControls(camera, renderer.domElement)
//controls.addEventListener('change', render)

const boxGeometry: THREE.BoxGeometry = new THREE.BoxGeometry()
const sphereGeometry: THREE.SphereGeometry = new THREE.SphereGeometry()
const icosahedronGeometry: THREE.IcosahedronGeometry = new THREE.IcosahedronGeometry(1,0)
const planeGeometry: THREE.PlaneGeometry = new THREE.PlaneGeometry()
const torusKnotGeometry: THREE.TorusKnotGeometry = new THREE.TorusKnotGeometry()

const material: THREE.MeshBasicMaterial = new THREE.MeshBasicMaterial()
//const material: THREE.MeshNormalMaterial = new THREE.MeshNormalMaterial()

const cube: THREE.Mesh = new THREE.Mesh(boxGeometry, material)
cube.position.x = 5
scene.add(cube)

const sphere: THREE.Mesh = new THREE.Mesh(sphereGeometry, material)
sphere.position.x = 3
scene.add(sphere)

const icosahedron: THREE.Mesh = new THREE.Mesh(icosahedronGeometry, material)
icosahedron.position.x = 0
scene.add(icosahedron)

const plane: THREE.Mesh = new THREE.Mesh(planeGeometry, material)
plane.position.x = -2
scene.add(plane)

const torusKnot: THREE.Mesh = new THREE.Mesh(torusKnotGeometry, material)
torusKnot.position.x = -5
scene.add(torusKnot)

camera.position.z = 3

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

const stats = Stats()
document.body.appendChild(stats.dom)

var options = {
    side: {
        "FrontSide": THREE.FrontSide,
        "BackSide": THREE.BackSide,
        "DoubleSide": THREE.DoubleSide,
    }
}
const gui = new GUI()
const materialFolder = gui.addFolder('THREE.Material')
materialFolder.add(material, 'transparent')
materialFolder.add(material, 'opacity', 0, 1, 0.01)
materialFolder.add(material, 'depthTest')
materialFolder.add(material, 'depthWrite')
materialFolder.add(material, 'alphaTest', 0, 1, 0.01).onChange(() => updateMaterial())
materialFolder.add(material, 'visible')
materialFolder.add(material, 'side', options.side).onChange(() => updateMaterial())
materialFolder.open()

function updateMaterial() {
    material.side = Number(material.side)
    material.needsUpdate = true
}

var animate = function () {
    requestAnimationFrame(animate)

    render()

    stats.update()
};

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