MeshBasicMaterial

Video Lecture

MeshBasicMaterial MeshBasicMaterial MeshBasicMaterial MeshBasicMaterial

Description

In this lecture we experiment with the Three.js MeshBasicMaterial

Start Code

Note

The Image files used in this lesson should be downloaded from zip file attached as resources along side this video and placed into the folder /dist/client/img

./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 texture = new THREE.TextureLoader().load("img/grid.png")
// material.map = texture
// const envTexture = new THREE.CubeTextureLoader().load(["img/px_50.png", "img/nx_50.png", "img/py_50.png", "img/ny_50.png", "img/pz_50.png", "img/nz_50.png"])
// envTexture.mapping = THREE.CubeReflectionMapping
// envTexture.mapping = THREE.CubeRefractionMapping
// material.envMap = envTexture

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,
    },
    combine: {
        "MultiplyOperation": THREE.MultiplyOperation,
        "MixOperation": THREE.MixOperation,
        "AddOperation": THREE.AddOperation
    },
}
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()

var data = {
    color: material.color.getHex(),
};

var meshBasicMaterialFolder = gui.addFolder('THREE.MeshBasicMaterial');

//meshBasicMaterialFolder.addColor(data, 'color').onChange(() => { material.color.setHex(Number(data.color.toString().replace('#', '0x'))) });
//meshBasicMaterialFolder.add(material, 'wireframe');
//meshBasicMaterialFolder.add(material, 'wireframeLinewidth', 0, 10);
//meshBasicMaterialFolder.add(material, 'combine', options.combine).onChange(() => updateMaterial())
//meshBasicMaterialFolder.add(material, 'reflectivity', 0, 1);
//meshBasicMaterialFolder.add(material, 'refractionRatio', 0, 1);
meshBasicMaterialFolder.open()

function updateMaterial() {
    material.side = Number(material.side)
    material.combine = Number(material.combine)
    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()//{ color: 0x00ff00, wireframe: true })

const texture = new THREE.TextureLoader().load("img/grid.png")
material.map = texture
const envTexture = new THREE.CubeTextureLoader().load(["img/px_50.png", "img/nx_50.png", "img/py_50.png", "img/ny_50.png", "img/pz_50.png", "img/nz_50.png"])
//envTexture.mapping = THREE.CubeReflectionMapping
envTexture.mapping = THREE.CubeRefractionMapping
material.envMap = envTexture

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,
    },
    combine: {
        "MultiplyOperation": THREE.MultiplyOperation,
        "MixOperation": THREE.MixOperation,
        "AddOperation": THREE.AddOperation
    },
}
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()

var data = {
    color: material.color.getHex(),
};

var meshBasicMaterialFolder = gui.addFolder('THREE.MeshBasicMaterial');
meshBasicMaterialFolder.addColor(data, 'color').onChange(() => { material.color.setHex(Number(data.color.toString().replace('#', '0x'))) });
meshBasicMaterialFolder.add(material, 'wireframe');
//meshBasicMaterialFolder.add(material, 'wireframeLinewidth', 0, 10);
meshBasicMaterialFolder.add(material, 'combine', options.combine).onChange(() => updateMaterial())
meshBasicMaterialFolder.add(material, 'reflectivity', 0, 1);
meshBasicMaterialFolder.add(material, 'refractionRatio', 0, 1);
meshBasicMaterialFolder.open()

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

var animate = function () {
    requestAnimationFrame(animate)

    render()

    stats.update()
};

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