JSFiddle - React, Tailwind, and code Playground
HTML
<script src="//cdn.rawgit.com/mrdoob/three.js/master/build/three.min.js"></script>
<script type="x-shader/x-vertex" id="vertexShader">
varying float intensity;
void main() {
/* Calculates dot product of the view vector (cameraPosition) and the normal */
vec3 vNormal = vec3(modelMatrix * vec4(normal, 0.0));
/*Change intensity by modifying the exponent in pow. Higher value = less intense */
intensity = pow(0.2 - dot(normalize(cameraPosition), vNormal), 2.8);
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
}
</script>
<script type="x-shader/x-fragment" id="fragmentShader">
varying float intensity;
void main() {
vec3 glow = vec3(255.0/255.0, 255.0/255.0, 255.0/255.0) * intensity;
gl_FragColor = vec4( glow, 1.0);
}
</script>
JavaScript
var camera, scene, renderer;
var geometry, material, mesh;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera( 30, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.z = 150;
scene = new THREE.Scene();
var material = new THREE.ShaderMaterial( {
uniforms: {},
vertexShader: document.getElementById('vertexShader').textContent,
fragmentShader: document.getElementById('fragmentShader').textContent
} );
mesh = new THREE.Mesh(new THREE.IcosahedronBufferGeometry(35, 4), material);
scene.add( mesh );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
}
function animate() {
requestAnimationFrame( animate );
mesh.rotation.x += 0.01;
mesh.rotation.y += 0.02;
renderer.render( scene, camera );
}