首页 > 分享 > js html5渲染的3D玫瑰花（程序员的情人节礼物）

js html5渲染的3D玫瑰花（程序员的情人节礼物）

花匠小妙招
2024-09-14 09:47

在这里插入图片描述

<!DOCTYPE html> <html> <head> <title>js html5渲染的3D玫瑰花（程序员的情人节礼物）</title> <meta charset="utf-8"> </head> <body> <canvas id="c" height="500" width="500"></canvas> <script> var b = document.body; var c = document.getElementsByTagName('canvas')[0]; var a = c.getContext('2d'); document.body.clientWidth; </script> <script> // start of submission // 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) // end of submission // </script> </body> </html>

123456789101112131415161718192021

<html > <head> <meta charset="utf-8"> <title>Rose making and sharing（玫瑰花）</title> <meta http-equiv="Content-Type" content="text/html; charset=gbk"> </head> <body style="margin-left:200px"> <div style="text-align: center"> <canvas id="c"></canvas> </div> <h1>Looking forward to more exchanges and sharing（玫瑰花）</h1> <script type="text/javascript"> var canvas = document.getElementsByTagName('canvas')[0]; var context = canvas.getContext('2d'); var a = context; var b = document.body; var c = canvas; document.body.clientWidth; var zBuffer = []; var SIZE = 777; canvas.width = canvas.height = SIZE; var h = -350; function surface(a, b, c) { if (c > 60) { return { x : Math.sin(a * 7) * (13 + 5 / (.2 + Math.pow(b * 4, 4))) - Math.sin(b) * 50, y : b * SIZE + 50, z : 625 + Math.cos(a * 7) * (13 + 5 / (.2 + Math.pow(b * 4, 4))) + b * 400, r : a * 1 - b / 2, g : a }; } var A = a * 2 - 1; var B = b * 2 - 1; if (A * A + B * B < 1) { if (c > 37) { var j = c & 1; var n = j ? 6 : 4; var o = .5 / (a + .01) + Math.cos(b * 125) * 3 - a * 300; var w = b * h; return { x : o * Math.cos(n) + w * Math.sin(n) + j * 610 - 390, y : o * Math.sin(n) - w * Math.cos(n) + 550 - j * 350, z : 1180 + Math.cos(B + A) * 99 - j * 300, r : .4 - a * .1 + Math.pow(1 - B * B, -h * 6) * .15 - a * b * .4 + Math.cos(a + b) / 5 + Math.pow(Math.cos((o * (a + 1) + (B > 0 ? w : -w)) / 25), 30) * .1 * (1 - B * B), g : o / 1e3 + .7 - o * w * 3e-6 }; } if (c > 32) { c = c * 1.16 - .15; var o = a * 45 - 20; var w = b * b * h; var z = o * Math.sin(c) + w * Math.cos(c) + 620; return { x : o * Math.cos(c) - w * Math.sin(c), y : 28 + Math.cos(B * .5) * 99 - b * b * b * 60 - z / 2 - h, z : z, r : (b * b * .3 + Math.pow((1 - (A * A)), 7) * .15 + .3) * b, g : b * .7 }; } var o = A * (2 - b) * (80 - c * 2); var w = 99 - Math.cos(A) * 120 - Math.cos(b) * (-h - c * 4.9) + Math.cos(Math.pow(1 - b, 7)) * 50 + c * 2; var z = o * Math.sin(c) + w * Math.cos(c) + 700; return { x : o * Math.cos(c) - w * Math.sin(c), y : B * 99 - Math.cos(Math.pow(b, 7)) * 50 - c / 3 - z / 1.35 + 450, z : z, r : (1 - b / 1.2) * .9 + a * .1, g : Math.pow((1 - b), 20) / 4 + .05 }; } } setInterval(function() { for ( var i = 0; i < 10000; i++) { var part = i % 46; var c = part / .74; var point = surface(Math.random(), Math.random(), c); if (point) { var z = point.z; var x = parseInt(point.x * SIZE / z - h); var y = parseInt(point.y * SIZE / z - h); var zBufferIndex = y * SIZE + x; if ((typeof zBuffer[zBufferIndex] === "undefined") || (zBuffer[zBufferIndex] > z)) { zBuffer[zBufferIndex] = z; var r = -parseInt(point.r * h); var g = -parseInt(point.g * h); var b = -parseInt(point.r * point.r * -80); context.fillStyle = "rgb(" + r + "," + g + "," + b + ")"; context.fillRect(x, y, 1, 1); } } } }, 0); </script> </body> </html>

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104