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webgl_multiple_canvases_complex.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - multiple canvases - complex</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
color: #808080;
font-family: Monospace;
font-size: 13px;
text-align: center;
background-color: #fff;
margin: 0px;
overflow: hidden;
}
#info {
position: absolute;
top: 0px; width: 100%;
padding: 5px;
}
#canvas1, #canvas2, #canvas3 {
position: relative;
display: block;
border: 1px solid red;
}
#canvas1 {
width: 300px;
height: 200px;
}
#canvas2 {
width: 400px;
height: 100px;
left: 150px;
}
#canvas3 {
width: 200px;
height: 300px;
left: 75px;
}
a {
color: #0080ff;
}
</style>
</head>
<body>
<div id="container">
<canvas id="canvas1"></canvas>
<canvas id="canvas2"></canvas>
<canvas id="canvas3"></canvas>
</div>
<div id="info"><a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - multiple canvases - complex</div>
<script src="../build/three.js"></script>
<script src="js/Detector.js"></script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var views = [];
var scene, renderer;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
init();
animate();
//
function View( canvas, fullWidth, fullHeight, viewX, viewY, viewWidth, viewHeight ) {
canvas.width = viewWidth * window.devicePixelRatio;
canvas.height = viewHeight * window.devicePixelRatio;
var context = canvas.getContext( '2d' );
var camera = new THREE.PerspectiveCamera( 20, viewWidth / viewHeight, 1, 10000 );
camera.setViewOffset( fullWidth, fullHeight, viewX, viewY, viewWidth, viewHeight );
camera.position.z = 1800;
this.render = function () {
camera.position.x += ( mouseX - camera.position.x ) * 0.05;
camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
camera.lookAt( scene.position );
renderer.setViewport( 0, 0, viewWidth, viewHeight );
renderer.render( scene, camera );
context.drawImage( renderer.domElement, 0, 0 );
};
}
//
function init() {
var canvas1 = document.getElementById( 'canvas1' );
var canvas2 = document.getElementById( 'canvas2' );
var canvas3 = document.getElementById( 'canvas3' );
var fullWidth = 550;
var fullHeight = 600;
views.push( new View( canvas1, fullWidth, fullHeight, 0, 0, canvas1.clientWidth, canvas1.clientHeight ) );
views.push( new View( canvas2, fullWidth, fullHeight, 150, 200, canvas2.clientWidth, canvas2.clientHeight ) );
views.push( new View( canvas3, fullWidth, fullHeight, 75, 300, canvas3.clientWidth, canvas3.clientHeight ) );
//
scene = new THREE.Scene();
scene.background = new THREE.Color( 0xffffff );
var light = new THREE.DirectionalLight( 0xffffff );
light.position.set( 0, 0, 1 ).normalize();
scene.add( light );
// shadow
var canvas = document.createElement( 'canvas' );
canvas.width = 128;
canvas.height = 128;
var context = canvas.getContext( '2d' );
var gradient = context.createRadialGradient( canvas.width / 2, canvas.height / 2, 0, canvas.width / 2, canvas.height / 2, canvas.width / 2 );
gradient.addColorStop( 0.1, 'rgba(210,210,210,1)' );
gradient.addColorStop( 1, 'rgba(255,255,255,1)' );
context.fillStyle = gradient;
context.fillRect( 0, 0, canvas.width, canvas.height );
var shadowTexture = new THREE.CanvasTexture( canvas );
var shadowMaterial = new THREE.MeshBasicMaterial( { map: shadowTexture } );
var shadowGeo = new THREE.PlaneBufferGeometry( 300, 300, 1, 1 );
var shadowMesh;
shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
shadowMesh.position.y = - 250;
shadowMesh.rotation.x = - Math.PI / 2;
scene.add( shadowMesh );
shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
shadowMesh.position.x = - 400;
shadowMesh.position.y = - 250;
shadowMesh.rotation.x = - Math.PI / 2;
scene.add( shadowMesh );
shadowMesh = new THREE.Mesh( shadowGeo, shadowMaterial );
shadowMesh.position.x = 400;
shadowMesh.position.y = - 250;
shadowMesh.rotation.x = - Math.PI / 2;
scene.add( shadowMesh );
var faceIndices = [ 'a', 'b', 'c' ];
var radius = 200,
geometry1 = new THREE.IcosahedronGeometry( radius, 1 ),
geometry2 = new THREE.IcosahedronGeometry( radius, 1 ),
geometry3 = new THREE.IcosahedronGeometry( radius, 1 );
for ( var i = 0; i < geometry1.faces.length; i ++ ) {
var f1 = geometry1.faces[ i ];
var f2 = geometry2.faces[ i ];
var f3 = geometry3.faces[ i ];
for ( var j = 0; j < 3; j ++ ) {
var vertexIndex = f1[ faceIndices[ j ] ];
var p = geometry1.vertices[ vertexIndex ];
var color = new THREE.Color( 0xffffff );
color.setHSL( ( p.y / radius + 1 ) / 2, 1.0, 0.5 );
f1.vertexColors[ j ] = color;
var color = new THREE.Color( 0xffffff );
color.setHSL( 0.0, ( p.y / radius + 1 ) / 2, 0.5 );
f2.vertexColors[ j ] = color;
var color = new THREE.Color( 0xffffff );
color.setHSL( 0.125 * vertexIndex / geometry1.vertices.length, 1.0, 0.5 );
f3.vertexColors[ j ] = color;
}
}
var mesh, wireframe;
var material = new THREE.MeshPhongMaterial( { color: 0xffffff, flatShading: true, vertexColors: THREE.VertexColors, shininess: 0 } );
var wireframeMaterial = new THREE.MeshBasicMaterial( { color: 0x000000, wireframe: true, transparent: true } );
mesh = new THREE.Mesh( geometry1, material );
wireframe = new THREE.Mesh( geometry1, wireframeMaterial );
mesh.add( wireframe );
mesh.position.x = - 400;
mesh.rotation.x = - 1.87;
scene.add( mesh );
mesh = new THREE.Mesh( geometry2, material );
wireframe = new THREE.Mesh( geometry2, wireframeMaterial );
mesh.add( wireframe );
mesh.position.x = 400;
scene.add( mesh );
mesh = new THREE.Mesh( geometry3, material );
wireframe = new THREE.Mesh( geometry3, wireframeMaterial );
mesh.add( wireframe );
scene.add( mesh );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( fullWidth, fullHeight );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
}
function onDocumentMouseMove( event ) {
mouseX = event.clientX - windowHalfX;
mouseY = event.clientY - windowHalfY;
}
function animate() {
for ( var i = 0; i < views.length; ++i ) {
views[ i ].render();
}
requestAnimationFrame( animate );
}
</script>
</body>
</html>