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redsnow.html
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/
redsnow.html
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<!--
original
必要なのはスマホと1,000円のGoogle Cardboardだけ！ WebGLではじめるお手軽VR入門 - ICS MEDIA
https://ics.media/entry/7712
The MIT License (MIT) Copyright (c) 2016 ICS INC.
-->
<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<title>redrain - WebMegane</title>
<meta property="og:image" content="redrain.png">
<link rel="apple-touch-icon" href="redrain.png"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/r71/three.min.js"></script>
<script src="js/StereoEffect.js"></script>
<script src="js/DeviceOrientationControls.js"></script>
<script src="js/OrbitControls.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.17.0/TweenMax.min.js"></script>
<script>
//
(function() {
// 一辺の長さ
var STEP = 100;
var GRID_STEP = STEP * 4;
var BOX_STEP = 30;
var N_BOX = 2400;
// シーン
var scene;
// カメラ
var camera;
// レンダラー
var renderer;
// 描画領域
var container;
// VR表示へ変換
var effect;
// DOM
var element;
// 操作
var controls;
// 時間
var clock;
// 立方体の輪郭線を格納する配列
var edgesPool;
/**
* Initialize
*/
function init() {
// to user motion sensor, orientation sensor for iOS13
document.body.onclick = function() {
if (DeviceMotionEvent && DeviceMotionEvent.requestPermission && typeof DeviceMotionEvent.requestPermission === 'function') {
DeviceMotionEvent.requestPermission()
}
if (DeviceOrientationEvent && DeviceOrientationEvent.requestPermission && typeof DeviceOrientationEvent.requestPermission === 'function') {
DeviceOrientationEvent.requestPermission();
}
}
// シーン
scene = new THREE.Scene();
// カメラ
camera = new THREE.PerspectiveCamera(90, window.innerWidth / window.innerHeight, 1, 3000);
camera.position.set(0, 700, 0);
camera.far *= 10;
scene.add(camera);
// レンダラー
renderer = new THREE.WebGLRenderer({ antialias: true, alpha: true });
//renderer.setClearColor(0x0);
renderer.setClearColor(0x000000, 0); // the default
renderer.setSize(window.innerWidth, window.innerHeight);
// ピクセルレートを設定
if(window.devicePixelRatio) {
renderer.setPixelRatio(window.devicePixelRatio);
}
// DOM
element = renderer.domElement;
// 描画領域
container = document.getElementById("container");
container.appendChild(element);
// VR表示へ変換
effect = new THREE.StereoEffect(renderer);
effect.focalLength = 50;
// PCで閲覧時にマウスドラッグで操作
controls = new THREE.OrbitControls(camera, element);
controls.rotateUp(Math.PI / 4);
controls.target.set(
camera.position.x + 0.15,
camera.position.y,
camera.position.z
);
controls.noZoom = true;
controls.noPan = true;
clock = new THREE.Clock();
// スマートフォンの場合はジャイロセンサーでの操作へ変更
window.addEventListener("deviceorientation", setOrientationControls, true);
// windowのリサイズ処理
window.addEventListener("resize", resize, false);
resize();
// 立方体を生成
createBox();
// 床を生成
createBrid();
// 繰り返し処理を開始
loop();
}
/**
* ジャイロセンサーでの操作へ変更します。
*/
function setOrientationControls(e) {
if (!e.alpha) {
return;
}
controls = new THREE.DeviceOrientationControls(camera, true);
controls.connect();
controls.update();
element.addEventListener("click", fullscreen, false);
window.removeEventListener("deviceorientation", setOrientationControls, true);
}
/**
* 立方体の生成します。
*/
function createBox() {
edgesPool = [];
var geometry = new THREE.BoxGeometry(BOX_STEP, BOX_STEP, BOX_STEP, 1, 1, 1);
var material = new THREE.MeshBasicMaterial({ color: 0xFF0000 });
for(var i = 0; i < N_BOX; i++) {
var mesh = new THREE.Mesh(geometry, material);
// 立方体を作る
var egh = new THREE.EdgesHelper(mesh, 0xFF0000);
egh.material.linewidth = 1;
egh.updateMatrix();
scene.add(egh);
edgesPool.push(egh);
startDrop(egh);
}
}
/**
* 落下アニメーションを停止します。
*/
function startDrop(egh) {
// ランダムに立方体を配置
egh.position.x = STEP * Math.round(3 * 6000 * (Math.random() - 0.5) / STEP) + STEP / 2;
egh.position.y = 5000 * 4;
egh.position.z = STEP * Math.round(3 * 6000 * (Math.random() - 0.5) / STEP) + STEP / 2;
egh.updateMatrix();
// 秒数
var sec = 3 * Math.random() + 3;
TweenMax.to(egh.position, sec, {
y: 20, //STEP / 2 + 10,
//ease: Bounce.easeOut,
onComplete: endDrop,
onCompleteParams: [ egh ]
});
}
/**
* 落下アニメーションが終了しました。
*/
function endDrop(egh) {
// 再度アニメーション
setTimeout(function() {
startDrop(egh)
}, 1000);
}
/**
* 地面を生成します。
*/
function createBrid() {
var grid = new THREE.GridHelper(10000, GRID_STEP);
var gcolor = 0xFF0000; // 0x444444
grid.setColors(gcolor, gcolor);
scene.add(grid);
}
/**
* windowがリサイズしました。
*/
function resize() {
// var width = container.offsetWidth;
// var height = container.offsetHeight;
var width = window.innerWidth;
var height = window.innerHeight;
camera.aspect = width / height;
camera.updateProjectionMatrix();
renderer.setSize(width, height);
effect.setSize(width, height);
}
/**
* 繰り返し実行される処理です。
*/
function loop() {
requestAnimationFrame(loop);
update(clock.getDelta());
render();
}
/**
* 更新します。
*/
function update(dt) {
if (edgesPool) {
for (var i = 0; i < edgesPool.length; i++) {
edgesPool[i].updateMatrix();
}
}
camera.updateProjectionMatrix();
controls.update(dt);
}
/**
* レンダリングします。
*/
function render() {
effect.render(scene, camera);
}
/**
* フルスクリーン表示へ切り替えます。
*/
function fullscreen() {
if (container.requestFullscreen) {
container.requestFullscreen();
} else if (container.msRequestFullscreen) {
container.msRequestFullscreen();
} else if (container.mozRequestFullScreen) {
container.mozRequestFullScreen();
} else if (container.webkitRequestFullscreen) {
container.webkitRequestFullscreen();
}
}
window.addEventListener("DOMContentLoaded", init, false);
})();
window.onload = function() {
const USE_CAMERA_FRONT = false;
// var videoop = USE_CAMERA_FRONT ? true : { facingMode : { exact : "environment" } };
// var videoop = USE_CAMERA_FRONT ? true : { facingMode : { ideal : "environment" } };
var videoop = USE_CAMERA_FRONT ? true : {
facingMode : { ideal : "environment" },
width: { min: 640, ideal: 1920 },
height: { min: 480, ideal: 1080 }
// width: { min: 640, ideal: 1280, max: 1920 },
// height: { min: 480, ideal: 720, max: 1080 }
};
const medias = { audio: false, video: videoop };
// dump(navigator.mediaDevices.getSupportedConstraints());
navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia
if (navigator.getUserMedia) {
navigator.getUserMedia(medias, function(stream) {
video.srcObject = stream;
}, function(err) {
alert(err);
}
)
} else {
navigator.mediaDevices.getUserMedia(medias).then(function(stream) {
video.srcObject = stream;
}).catch(function(err) {
alert(err);
})
}
var g = canvas.getContext("2d");
var draw = function() {
const cw = window.innerWidth * window.devicePixelRatio;
const ch = window.innerHeight * window.devicePixelRatio;
canvas.width = cw;
canvas.height = ch;
const vw = video.videoWidth;
const vh = video.videoHeight;
const cw2 = cw / 2;
const caspect = ch / cw2;
const vaspect = vh / vw;
const fitwidth = caspect < vaspect; // auto fit screen
// const fitwidth = true; // force fit width
// const fitwidth = false; // force fit height
if (fitwidth) {
const vh2 = vw * caspect;
if (vh2 > vh) {
const cy = (vh2 - vh) / 2 / (vw / cw2);
const ch2 = cw2 * vaspect;
g.drawImage(video, 0, 0, vw, vh, 0, cy, cw2, ch2);
g.drawImage(video, 0, 0, vw, vh, cw2, cy, cw2, ch2);
} else {
const vy = (vh - vh2) / 2;
g.drawImage(video, 0, vy, vw, vh2, 0, 0, cw2, ch);
g.drawImage(video, 0, vy, vw, vh2, cw2, 0, cw2, ch);
}
} else {
const vw2 = vh / caspect;
if (vw2 > vw) {
const cx = (vw2 - vw) / 2 / (vh / ch);
const cw3 = ch / vaspect;
console.log(cx);
g.drawImage(video, 0, 0, vw, vh, cx, 0, cw3, ch);
g.drawImage(video, 0, 0, vw, vh, cw2 + cx, 0, cw3, ch);
} else {
const vx = (vw - vw2) / 2;
g.drawImage(video, vx, 0, vw2, vh, 0, 0, cw2, ch);
g.drawImage(video, vx, 0, vw2, vh, cw2, 0, cw2, ch);
}
}
requestAnimationFrame(draw);
};
draw();
var mode = 0;
var filters = [ "", "grayscale(100%)", "sepia(100%)", "contrast(200%)", "hue-rotate(90deg)", "invert(100%)" ];
canvas.onmousedown = function() {
mode = (mode + 1) % filters.length;
canvas.style.filter = filters[mode];
};
};
</script>
<style>
body {
margin: 0;
overflow: hidden;
}
#video {
position: absolute;
display: block;
width: 100%;
transform: scale(0.01);
z-index: -1;
}
#canvas {
z-index: 0;
display: block;
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
#container {
z-index: 4;
position: absolute;
top: 0;
left: 0;
x-opacity: 0.5;
}
</style>
</head>
<body>
<div id="container"></div>
<canvas id="canvas"></canvas>
<video id="video" autoplay playsinline></video>
</body>
</html>