Safari in Safari - An Introduction to 3D content on the Web

Felix Palmer | @pheeelicks | www.pheelicks.com

Safari in Safari - An Introduction to 3D content on the Web


Felix Palmer | @pheeelicks | www.pheelicks.com

Slides: felixpalmer.github.io/safari-webgl/presentation.html

Code: github.com/felixpalmer/safari-webgl

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Overview



Slides: felixpalmer.github.io/safari-webgl/presentation.html

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Why WebGL?

Some examples: http://threejs.org

THREE.js overview

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Scene graph

Rendering a Scene

Hello (3D) World

var geom = new THREE.PlaneGeometry( 600, 600 );
var material = new THREE.MeshBasicMaterial();
var mesh = new THREE.Mesh( geom, material );
scene.add( mesh );

var camera = new THREE.PerspectiveCamera( 70 );
scene.add( camera );
var renderer = new THREE.WebGLRenderer();

THREE.js - The macro and the micro

Larger projects



https://github.com/felixpalmer/amd-three.js

Require.js module

define( ["camera","geometry","material","renderer","scene"],
  function ( camera, geometry, material, renderer, scene ) {
    var app = {
    init: function () {
      app.mesh = new THREE.Mesh(geometry.box, material.ice);
      app.mesh.position.x = 20;
      scene.add( app.mesh );
    },
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How do I build this thing?

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Geometry

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Geometry - Sphere

new THREE.SphereGeometry( 1, 32, 32 );
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Geometry - Torus

new THREE.TorusGeometry( 1.3, 0.1, 16, 32 );
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Geometry - Lathe

var flatRingRadius = 3.33;
var flatRingPoints = [
  new THREE.Vector3( flatRingRadius + 0.1, 0, 0 ),
  new THREE.Vector3( flatRingRadius - 0.1, 0, 0 )
];
var flatRing = new THREE.LatheGeometry( flatRingPoints, 64 );
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Geometry - Path-based

var path = new THREE.Path();
ringPath.moveTo( 0, 0 );
ringPath.lineTo( 1, 0 );
ringPath.absarc( 1, 0, 1, 0, Math.PI, true )
...
var points = ringPath.getPoints( 24, true );
var ring = new THREE.LatheGeometry( vectors, 128 );
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Geometry - Text

new THREE.TextGeometry( "E", { size: 2, height: 0.04 } );
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Material

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Material - Wireframe

wire = new THREE.MeshBasicMaterial( { wireframe: true } )
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Material - Basic

basic = new THREE.MeshBasicMaterial( { color: "#00ff00" } )
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MeshPhongMaterial

new THREE.MeshPhongMaterial( {
  color: new THREE.Color( "#1557fb" ),
  emissive: new THREE.Color( "#232323" ),
  specular: new THREE.Color( "#ccccff" ),
  shading: THREE.FlatShading,
  shininess: 40
} );
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Textured Phong

new THREE.MeshPhongMaterial( {
  map: texture.wood,
  ambient: new THREE.Color( "#000000" ),
  emissive: new THREE.Color( "#000000" ),
  specular: new THREE.Color( "#b15712" ),
  shininess: 10
} ),
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Environment maps

new THREE.MeshPhongMaterial( {
  envMap: texture.sky,
  ...
} ),
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Bump maps

new THREE.MeshPhongMaterial( {
  bumpMap: texture.brushed,
  bumpScale: 0.003,
  ...
} ),
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Transparency - Blending

new THREE.MeshPhongMaterial( {
  transparent: true,
  opacity: 0.95,
  blending: THREE.AdditiveBlending,
  shading: THREE.SmoothShading,
  combine: THREE.MixOperation,
  envMap: texture.sky,
  reflectivity: 0.29,
  ...
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Bringing it to life

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Lights

var light = new THREE.SpotLight( 0xffffff, 1, 0 );
light.position.set( 25, -20, 20 );
light.target.position.set( 0, 0, 0 );
light.castShadow = true;
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Interactivity

app.tick = function() {
  app.render();
  window.requestAnimationFrame( app.tick );
}
app.tick();

Moving the Camera

app.clock = new THREE.Clock( true );
app.render = function() {
  var t = 0.2 * app.clock.getElapsedTime();
  var r = 15.0 + 12.0 * Math.cos( 0.3 * t );
  camera.position = new THREE.Vector3( 0, 0, r );
  ...

Looking at Objects

app.render = function() {
  ...
  camera.position = camPosition;
  camera.up = new THREE.Vector3( 0, 0, 1 );
  camera.lookAt( new THREE.Vector3( 1, 2, 3 ) );
};

Camera Orbiting

var r = 15.0 + 12.0 * Math.cos( 0.3 * t );
camera.position = new THREE.Vector3(
  r * Math.sin( t ), // Orbital motion
  r * Math.cos( t ), // Orbital motion
  12.0 + 5.0 * Math.cos( 1.3 * t ) // Height
);
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User Input

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Thanks


Felix Palmer | @pheeelicks | www.pheelicks.com

Slides: felixpalmer.github.io/safari-webgl/presentation.html

Code: github.com/felixpalmer/safari-webgl

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