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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - geometry - shapes</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
html {
margin: 0;
padding: 0;
}
body {
margin: 0;
padding: 0;
//background-image: url('logo.png');
background-repeat: no-repeat;
background-position: center center;
background-color: #ffffff;
color: #444;
}
/*canvas {
opacity: 0.8;
}*/
</style>
</head>
<body>
<script src="three.min.js"></script>
<script src="dat.gui.min.js"></script>
<script>
var container;
var camera, scene, renderer;
var group;
var targetRotation = 0;
var targetRotationOnMouseDown = 0;
var mouseX = 0;
var mouseXOnMouseDown = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
let settings = {
// Camera position
cameraPosX: 0,
cameraPosY: 0.055,
cameraPosZ: 3.3,
// Logo orientation
logoRotX: 0.6,
logoRotY: 0,
logoRotZ: 0,
// Logo Shape
logoWidth: 1,
logoBottomScale: 0.54,
logoHeight: 0.8,
logoCornerRadius: 0.12,
logoBottomPinch: 0.08,
officialLogoBackground: false,
};
let gui = new dat.GUI({ autoPlace: true });
var folderCamera = gui.addFolder('Pose');
folderCamera.add(settings, 'cameraPosX').onFinishChange(updateCamera);
folderCamera.add(settings, 'cameraPosY').onFinishChange(updateCamera);
folderCamera.add(settings, 'cameraPosZ').onFinishChange(updateCamera);
folderCamera.add(settings, 'logoRotX').onFinishChange(updateCamera);
folderCamera.add(settings, 'logoRotY').onFinishChange(updateCamera);
folderCamera.add(settings, 'logoRotZ').onFinishChange(updateCamera);
var folderShape = gui.addFolder('Shape');
folderShape.add(settings, 'logoWidth').onFinishChange(updateShape);
folderShape.add(settings, 'logoBottomScale').onFinishChange(updateShape);
folderShape.add(settings, 'logoHeight').onFinishChange(updateShape);
folderShape.add(settings, 'logoCornerRadius').onFinishChange(updateShape);
folderShape.add(settings, 'logoBottomPinch').onFinishChange(updateShape);
/*gui.add(settings, 'officialLogoBackground').onFinishChange(() => {
if (settings.officialLogoBackground) {
scene.background = null;
} else {
scene.background = new THREE.Color( 0xFFFFFF );
}
});*/
init();
animate();
function updateCamera() {
if (!camera) return;
camera.position.set( settings.cameraPosX, settings.cameraPosY, settings.cameraPosZ );
group.rotation.x = settings.logoRotX;
targetRotation = settings.logoRotY;
group.rotation.z = settings.logoRotZ;
}
function XRLogoShader(color1, color2, height) {
return new THREE.ShaderMaterial({
side: THREE.DoubleSide,
uniforms: {
color1: {
value: color1
},
color2: {
value: color2
}
},
vertexShader: `
varying vec4 vPos;
varying vec3 vNorm;
void main() {
vPos = vec4(position, 1.0);
vNorm = normalMatrix * normal;
gl_Position = projectionMatrix * modelViewMatrix * vPos;
}
`,
fragmentShader: `
uniform vec3 color1;
uniform vec3 color2;
varying vec4 vPos;
varying vec3 vNorm;
const vec3 backDir = vec3(-1, 0, 0);
void main() {
float colorMix = (vPos.y + (${height} * 0.5)) / ${height};
float frontness = dot(vNorm, backDir) + 0.75;
float alpha = clamp(frontness, 0.75, 1.0);
gl_FragColor = vec4(mix(color1, color2, colorMix), alpha);
}
`,
});
}
function updateShape() {
if (!scene) return;
if (group) {
scene.remove( group );
}
function addShape( x, y, z, rx, ry, rz, s ) {
var shapeGroup = new THREE.Group();
// note: default UVs generated by ShapeBufferGeometry are simply the x- and y-coordinates of the vertices
// flat shape
var shape = new THREE.Shape();
function lerp(a, b, t) {
return a + t * (b - a);
}
( function roundedRect( ctx, width, bottomScale, height, radius, bottomPinch ) {
let hw = width / 2;
let hh = height / 2;
let bs = bottomScale;
let rhr = radius / height;
let rbwr = radius / (width * bs);
let hw_r = lerp(hw, hw * bs, rhr);
let hw_br = lerp(hw * bs, hw, rhr);
let hh_r = lerp(hh, hh - bottomPinch, rbwr);
ctx.moveTo( hw_br, -hh + radius );
ctx.lineTo( hw_r, hh - radius );
ctx.quadraticCurveTo( hw, hh, hw - radius, hh );
ctx.lineTo( 0, hh );
ctx.lineTo( 0, -hh + bottomPinch );
ctx.lineTo( (hw - radius) * bs, -hh_r );
ctx.quadraticCurveTo( hw * bs, -hh, hw_br, -hh + radius );
} )( shape,
settings.logoWidth,
settings.logoBottomScale,
settings.logoHeight,
settings.logoCornerRadius,
settings.logoBottomPinch );
var geometry = new THREE.ShapeBufferGeometry( shape );
// Rear Right Fin
var mesh = new THREE.Mesh( geometry, XRLogoShader(new THREE.Color(0xAE100F), new THREE.Color(0xD40002), settings.logoHeight) );
mesh.position.set( x, y, z );
mesh.rotation.set( rx, ry + Math.PI*0.25, rz );
mesh.scale.set( s, s, s );
shapeGroup.add( mesh );
// Rear Left Fin
var mesh = new THREE.Mesh( geometry, XRLogoShader(new THREE.Color(0xFD0003), new THREE.Color(0xD20002), settings.logoHeight) );
mesh.position.set( x, y, z );
mesh.rotation.set( rx, ry + Math.PI*0.75, rz );
mesh.scale.set( s, s, s );
shapeGroup.add( mesh );
// Front Left Fin
var mesh = new THREE.Mesh( geometry, XRLogoShader(new THREE.Color(0xAE100F), new THREE.Color(0xD40002), settings.logoHeight) );
mesh.position.set( x, y, z );
mesh.rotation.set( rx, ry + Math.PI*1.25, rz );
mesh.scale.set( s, s, s );
shapeGroup.add( mesh );
// Front Right Fin
var mesh = new THREE.Mesh( geometry, XRLogoShader(new THREE.Color(0xFD0003), new THREE.Color(0xD20002), settings.logoHeight) );
mesh.position.set( x, y, z );
mesh.rotation.set( rx, ry + Math.PI*1.75, rz );
mesh.scale.set( s, s, s );
shapeGroup.add( mesh );
if (!group) {
shapeGroup.rotation.y = Math.PI/2;
}
return shapeGroup;
}
// Rounded rectangle
group = addShape( 0, 0, 0, 0, 0, 0, 1 );
scene.add( group );
updateCamera();
}
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
scene = new THREE.Scene();
scene.background = new THREE.Color( 0xFFFFFF );
camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 1000 );
scene.add( camera );
renderer = new THREE.WebGLRenderer( { antialias: true, alpha: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
//
window.addEventListener( 'resize', onWindowResize, false );
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'touchstart', onDocumentTouchStart, false );
document.addEventListener( 'touchmove', onDocumentTouchMove, false );
updateShape();
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onDocumentMouseDown( event ) {
event.preventDefault();
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'mouseup', onDocumentMouseUp, false );
document.addEventListener( 'mouseout', onDocumentMouseOut, false );
mouseXOnMouseDown = event.clientX - windowHalfX;
targetRotationOnMouseDown = targetRotation;
}
function onDocumentMouseMove( event ) {
mouseX = event.clientX - windowHalfX;
targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
}
function onDocumentMouseUp() {
// make it end on a "logo look"
targetRotation = (Math.floor(targetRotation/Math.PI + 0.5)) * Math.PI;
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
}
function onDocumentMouseOut() {
// make it end on a "logo look"
targetRotation = (Math.floor(targetRotation/Math.PI + 0.5)) * Math.PI;
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
}
function onDocumentTouchStart( event ) {
if ( event.touches.length == 1 ) {
event.preventDefault();
mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
targetRotationOnMouseDown = targetRotation;
document.addEventListener( 'touchend', onDocumentTouchEnd, false );
}
}
function onDocumentTouchMove( event ) {
if ( event.touches.length == 1 ) {
event.preventDefault();
mouseX = event.touches[ 0 ].pageX - windowHalfX;
targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;
}
}
function onDocumentTouchEnd( event ) {
if ( event.touches.length == 0 ) {
// make it end on a "logo look"
targetRotation = (Math.floor(targetRotation/Math.PI + 0.5)) * Math.PI;
event.preventDefault();
document.removeEventListener( 'touchend', onDocumentTouchEnd, false );
}
}
//
function animate() {
requestAnimationFrame( animate );
group.rotation.y += ( targetRotation - group.rotation.y ) * 0.05;
render();
}
function render() {
renderer.render( scene, camera );
}
</script>
</body>
</html>