canvas可触摸交互式水面波纹动画效果代码
代码语言:html
所属分类:动画
代码描述:canvas可触摸交互式水面波纹动画效果代码,点击鼠标拖动试试。
下面为部分代码预览,完整代码请点击下载或在bfwstudio webide中打开
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<style>
html,
body {
width: 100%;
height: 100%;
overflow: hidden;
touch-action: none;
cursor: none;
}
</style>
</head>
<body>
<canvas id="canvas"></canvas>
<script>
function _defineProperty(obj, key, value) {if (key in obj) {Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true });} else {obj[key] = value;}return obj;}function getRandomFloat(min, max) {
return Math.random() * (max - min) + min;
}
function getRandomInt(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
function cycle(value, total) {
return (value % total + total) % total;
}
//*‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡/
// Entity
//*‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡*/
class Entity {constructor() {_defineProperty(this, "dpr",
window.devicePixelRatio || 1);_defineProperty(this, "toValue",
value => value * this.dpr);_defineProperty(this, "draw",
() => {});_defineProperty(this, "update",
() => {});}}
//*‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡/
// Point
//*‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡‡*/
class Point {
constructor(x, y) {
this.x = x;
this.y = y;
}
get position() {
return [this.x, this.y];
}
clone() {
return new Point(this.x, this.y);
}
delta(point) {
return [this.x - point.x, this.y - point.y];
}
distance(point) {
const dx = point.x - this.x;
const dy = point.y - this.y;
return Math.sqrt(dx * dx + dy * dy);
}
moveTo(x, y) {
this.x = x;
this.y = y;
return this;
}
moveAtAngle(angle, distance) {
this.x += Math.cos(angle) * distance;
this.y += Math.sin(angle) * distance;
return this;
}
applyVelocity(velocity) {
this.x += velocity.vx;
this.y += velocity.vy;
return this;
}
angleRadians(point) {
// radians = atan2(deltaY, deltaX)
const y = point.y - this.y;
const x = point.x - this.x;
return Math.atan2(y, x);
}
angleDeg(point) {
// degrees = atan2(deltaY, deltaX) * (180 / PI)
const y = point.y - this.y;
const x = point.x - this.x;
return Math.atan2(y, x) * (180 / Math.PI);
}
rotate(origin, radians) {
// rotate the point around a given origin point
const cos = Math.cos(radians);
cons.........完整代码请登录后点击上方下载按钮下载查看
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