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three_test2.html
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three_test2.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>ballcube</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="css/main.css">
<style>
* {
box-sizing: border-box;
-moz-box-sizing: border-box;
}
body {
background-color: #fff;
color: #444;
margin: auto;
padding: .5in;
max-width: 7in;
text-align: justify;
}
a {
color: #08f;
}
#info {
left: 0px;
}
.view {
width: 7in;
height: 7in;
margin: auto;
}
#c {
position: fixed;
left: 0px;
top: 0px;
width: 100%;
height: 100%;
background-color: #fff;
z-index: -1;
}
.math {
text-align: center;
}
.math-frac {
display: inline-block;
vertical-align: middle;
}
.math-num {
display: block;
}
.math-denom {
display: block;
border-top: 1px solid;
}
.math-sqrt {
display: inline-block;
transform: scale(1, 1.3);
}
.math-sqrt-stem {
display: inline-block;
border-top: 1px solid;
margin-top: 5px;
}
</style>
<script src="js/libs/three.js"></script>
<script src="js/beatstep.js"></script>
</head>
<body>
<canvas id="c"></canvas>
<script>
console.log(BeatStep)
// console.log(BeatStep.cc(10))
// BeatStep.on = function() {
// console.log('SDSDSDSDSDS')
// }
// BeatStep.ready
// .then((value) => {
// console.log('cc33', value);
// });
BeatStep.cc[10] = function(v) {
console.log('v', v)
}
BeatStep.notes = function(n, v) {
console.log('n',n, v)
}
let scene, t, canvas, camera, renderer;
let balls = 10;
let size = .60;
BeatStep.cc[10] = function(v) {
balls = v;
setup();
}
BeatStep.cc[74] = function(v) {
size = v;
}
const colors = [
'rgb(0,127,255)', 'rgb(255,0,0)', 'rgb(0,255,0)', 'rgb(0,255,255)',
'rgb(255,0,255)', 'rgb(255,0,127)', 'rgb(255,255,0)', 'rgb(0,255,127)'
];
canvas = document.getElementById('c');
renderer = new THREE.WebGLRenderer({ canvas: canvas, antialias: false });
renderer.setPixelRatio(window.devicePixelRatio);
scene = new THREE.Scene();
scene.background = new THREE.Color(0xffffff);
let geometry0
let geometry1
function setup() {
geometry0 = new THREE.BufferGeometry();
geometry1 = new THREE.BufferGeometry();
const vertices = [];
const range = balls / 2;
for (let i = - range; i <= range; i++) {
for (let j = - range; j <= range; j++) {
for (let k = - range; k <= range; k++) {
vertices.push(i, j, k);
// console.log('vertices', vertices.length, i, j, k)
}
}
}
console.log('vv', vertices)
geometry0.setAttribute('position', new THREE.Float32BufferAttribute(vertices, 3));
geometry1.setAttribute('position', new THREE.Float32BufferAttribute(vertices.slice(), 3));
const index = Math.floor(colors.length * Math.random());
const canvas2 = document.createElement('canvas');
canvas2.width = 128;
canvas2.height = 128;
const context = canvas2.getContext('2d');
context.arc(64, 64, 64, 0, 2 * Math.PI);
context.fillStyle = colors[index];
context.fill();
const texture = new THREE.CanvasTexture(canvas2);
const material = new THREE.PointsMaterial({ size: size, map: texture, transparent: true, alphaTest: 0.1 });
scene.add(new THREE.Points(geometry0, material));
// const camera = new THREE.PerspectiveCamera( 75, 1, 0.1, 100 );
camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
camera.position.set(0, 0, 1.2 * balls);
}
setup();
t = 0;
animate();
function animate() {
requestAnimationFrame(animate);
// updateSize
if (canvas.width !== canvas.clientWidth || canvas.height != canvas.clientHeight) {
renderer.setSize(canvas.clientWidth, canvas.clientHeight, false);
}
renderer.render(scene, camera);
const points = scene.children[0];
const position = points.geometry.attributes.position;
// console.log('pos', position.count)
const point = new THREE.Vector3();
const offset = new THREE.Vector3();
for (let i = 0; i < position.count; i++) {
point.fromBufferAttribute(geometry1.attributes.position, i);
offset.set(Math.sin(point.x - t / 50), 0, 0);
position.setXYZ(i, point.x + offset.x, point.y + offset.y, point.z + offset.z);
}
position.needsUpdate = true;
t++;
}
</script>
</body>
</html>