<html><head> ???<meta charset="utf-8"> ???<title>开心快乐每一天</title> ???<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> ???????<style type="text/css"> ???????#shusheng { ???????????position: absolute; ???????????width: 100%; ???????????height: 100%; ???????????text-align: center; ???????} ???</style></head><body> ???<div style="text-align: center;height:200px;margin-top: 200px;"> ???????<h1>送给你的好心情</h1> ???</div> ???<div id="shusheng"> ???????<canvas id="c"></canvas> ???????<script> ???????????var b = document.body; ???????????var c = document.getElementsByTagName(‘canvas‘)[0]; ???????????var a = c.getContext(‘2d‘); ???????????document.body.clientWidth; ???????</script> ???????<script> ???????????with(m = Math) C = cos, S = sin, P = pow, R = random; ???????????c.width = c.height = f = 500; ???????????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) ???????</script> ???</div></body></html>js实现的玫瑰花
原文地址：https://www.cnblogs.com/cengjingdeshuige/p/9517043.html