如何用canvas,js 实现一朵漂亮的玫瑰花浪漫送给女朋友吧
发布时间:2022-02-25 14:54:29 作者:米站 阅读量:87

新建一个html5页面,自己定义

内容如下

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>玫瑰花</title>

</head>

<style>

    #c{

        width: 100%;

        top: 20%;

        position: absolute;

        left: 7%;

    }

    body{

        background: #79a8ae;  /* fallback for old browsers */

    }

</style>

<body>

<canvas id="c"></canvas>

</body>

<script>

    var script = document.createElement('script');

    script.type = 'text/javascript';

    script.src = '../js/love.js?v='+new Date().getTime()

    document.body.appendChild(script);

    


</script>

</html>

第二部核心JS库引入

var b = document.body;

var c = document.getElementsByTagName('canvas')[0];

console.log(c)

var a = c.getContext('2d');

document.body.clientWidth;


with(m = Math) C = cos, S = sin, P = pow, R = random;

c.width = c.height = f = 600;

h = -250;


function p(a, b, c) {

    if (c > 60) return [S(a * 7) * (13 + 5 / (.2 + P(b * 4, 4))) - S(b) * 50, b * f + 50, 625 + C(a * 7) * (13 + 5 / (.2 + P(b * 4, 4))) + b * 400, a * 1 - b / 2, a];

    A = a * 2 - 1;

    B = b * 2 - 1;

    if (A * A + B * B < 1) {

        if (c > 37) {

            n = (j = c & 1) ? 6 : 4;

            o = .5 / (a + .01) + C(b * 125) * 3 - a * 300;

            w = b * h;

            return [o * C(n) + w * S(n) + j * 610 - 390, o * S(n) - w * C(n) + 550 - j * 350, 1180 + C(B + A) * 99 - j * 300, .4 - a * .1 + P(1 - B * B, -h * 6) * .15 - a * b * .4 + C(a + b) / 5 + P(C((o * (a + 1) + (B > 0 ? w : -w)) / 25), 30) * .1 * (1 - B * B), o / 1e3 + .7 - o * w * 3e-6]

        }

        if (c > 32) {

            c = c * 1.16 - .15;

            o = a * 45 - 20;

            w = b * b * h;

            z = o * S(c) + w * C(c) + 620;

            return [o * C(c) - w * S(c), 28 + C(B * .5) * 99 - b * b * b * 60 - z / 2 - h, z, (b * b * .3 + P((1 - (A * A)), 7) * .15 + .3) * b, b * .7]

        }

        o = A * (2 - b) * (80 - c * 2);

        w = 99 - C(A) * 120 - C(b) * (-h - c * 4.9) + C(P(1 - b, 7)) * 50 + c * 2;

        z = o * S(c) + w * C(c) + 700;

        return [o * C(c) - w * S(c), B * 99 - C(P(b, 7)) * 50 - c / 3 - z / 1.35 + 450, z, (1 - b / 1.2) * .9 + a * .1, P((1 - b), 20) / 4 + .05]

    }

}

setInterval('for(i=0;i<1e4;i++)if(s=p(R(),R(),i%46/.74)){z=s[2];x=~~(s[0]*f/z-h);y=~~(s[1]*f/z-h);if(!m[q=y*f+x]|m[q]>z)m[q]=z,a.fillStyle="rgb("+~(s[3]*h)+","+~(s[4]*h)+","+~(s[3]*s[3]*-80)+")",a.fillRect(x,y,1,1)}', 0)

实现效果



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