HTML5 canvas繪製的玫瑰花效果_html5教學技巧

有人用html就寫了一朵漂亮的玫瑰，是不是有點太騷氣了。純javascipt就弄出了玫瑰花，再次顯示了HTML5的威力
警告：傳說IE6核心是無法看到的，建議用Chrome或Firefox。

玫瑰花效果：

實作程式碼：

複製程式碼

程式碼如下:

程式碼如下:











<script><br /> var b = document.body;<br /> var c = document.getElementsByTagName('canvas' )[0];<br /> var a = c.getContext('2d');<br /> document.body.clientWidth; <br /></script>
<script><br /> // start of submission //<br /> 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(),iF/.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)<br /> // end of submission //</script>