{"id":9502,"date":"2020-10-17T22:56:57","date_gmt":"2020-10-17T14:56:57","guid":{"rendered":"https:\/\/www.zhangxinxu.com\/wordpress\/?p=9502"},"modified":"2023-06-05T20:32:48","modified_gmt":"2023-06-05T12:32:48","slug":"svg-feturbulence","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2020\/10\/svg-feturbulence\/","title":{"rendered":"SVG feTurbulence\u6ee4\u955c\u6df1\u5165\u4ecb\u7ecd"},"content":{"rendered":"<p>by <a href=\"https:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=9502\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=9502<\/a><br \/>\n\u672c\u6587\u6b22\u8fce\u5206\u4eab\u4e0e\u805a\u5408\uff0c\u5168\u6587\u8f6c\u8f7d\u5c31\u4e0d\u5fc5\u4e86\uff0c\u5c0a\u91cd\u7248\u6743\uff0c\u5708\u5b50\u5c31\u8fd9\u4e48\u5927\uff0c\u82e5\u6025\u7528\u53ef\u4ee5\u8054\u7cfb\u6388\u6743\u3002<\/p>\n<p><script>window.wxShareImgUrl = 'https:\/\/www.zhangxinxu.com\/study\/image\/share\/202010-fe-turbulence.jpg';<\/script><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/fires-cover.jpg\" width=\"415\" height=\"276\" alt=\"feTurbulence\u6ee4\u955c\u4e0e\u706b\u7130\u6548\u679c\" class=\"alignright clip thumb size-medium\" \/><\/p>\n<p>SVG\u6ee4\u955c\u5f88\u5f3a\uff0c\u8981\u60f3\u73a9\u5f97\u98de\u8d77\uff0c\u8fd8\u662f\u5f97\u5bf9\u6bcf\u4e00\u4e2a\u6ee4\u955c\u6709\u6df1\u5165\u7684\u7406\u89e3\u3002<\/p>\n<p>\u56e0\u4e3a\u5f88\u591a\u9177\u9177\u7684\u6548\u679c\u662f\u9700\u8981\u591a\u4e2a\u6ee4\u955c\u7ec4\u5408\u624d\u6709\u6548\u679c\u7684\u3002<\/p>\n<p>\u5982\u679c\u53ea\u662f\u534a\u540a\u5b50\u7684\u4e86\u89e3\uff0c\u60f3\u8981\u81ea\u5df1\u5b9e\u73b0\u4ec0\u4e48\u5c4c\u70b8\u5929\u7684\u6548\u679c\u9664\u4e86\u5bf9\u7740\u522b\u4eba\u5b9e\u73b0\u7684\u6548\u679c\u558a\u201c\u6e9c\u6e9c\u6e9c\u201d\u7136\u540e\u6a21\u4eff\u4e4b\u5916\uff0c\u5c31\u53ea\u80fd\u671b\u6d0b\u5174\u53f9\u4e86\u3002<\/p>\n<h3>\u4e00\u3001feTurbulence\u6ee4\u955c\u80fd\u5e72\u4ec0\u4e48\uff1f<\/h3>\n<p>\u5355\u8bcd<code>turbulence<\/code>\u662f\u201c\u6e4d\u6d41\u201d\u7684\u610f\u601d\uff0c\u4e5f\u5c31\u662f\u6df7\u4e71\u65e0\u7ae0\u7684\u6c14\u6d41\u3002\u56e0\u6b64feTurbulence\u6ee4\u955c\u4e5f\u53eb\u4f5c\u6e4d\u6d41\u6ee4\u955c\u3002<\/p>\n<p>\u5728\u81ea\u7136\u754c\u4e2d\uff0c\u5f88\u591a\u7269\u4f53\uff0c\u5f88\u591a\u6750\u8d28\u7684\u7eb9\u7406\u90fd\u8868\u73b0\u4e3a\u4e0d\u89c4\u5219\u3002<\/p>\n<p>\u4f8b\u5982\u98d8\u5ffd\u4e0d\u5b9a\u7684\u4e91\u6735\uff0c\u53d8\u5e7b\u83ab\u6d4b\u7684\u6c34\u6d41\uff0c\u65f6\u9690\u65f6\u73b0\u7684\u5149\u7ebf\uff0c\u968f\u673a\u7684\u6728\u8d28\u548c\u77f3\u8d28\u7eb9\u7406\u7b49\u3002<\/p>\n<p>\u60f3\u8981\u4f7f\u7528\u4ee3\u7801\u5b9e\u73b0\u4e0a\u9762\u8fd9\u4e9b\u6548\u679c\u662f\u4e0d\u592a\u5bb9\u6613\u7684\uff0c\u56e0\u4e3a\u901a\u5e38\u7684\u56fe\u5f62\u7b97\u6cd5\u90fd\u662f\u89c4\u5f8b\u7684\uff0c\u8d28\u611f\u90fd\u662f\u6241\u5e73\u7684\u3002<\/p>\n<p>\u5b9e\u9645\u5f00\u53d1\uff0c\u81ea\u7136\u8d28\u611f\u4e00\u822c\u7684\u89c6\u89c9\u8868\u73b0\uff0c\u901a\u5e38\u90fd\u662f\u4f7f\u7528PNG\u6216\u8005JPG\u8fd9\u7c7b\u4f4d\u56fe\u8fdb\u884c\u8868\u73b0\u7684\u3002<\/p>\n<p>\u4f46\u662f\uff0c\u4f4d\u56fe\u4f53\u79ef\u5927\uff0c\u56fe\u7247\u4e00\u65e6\u786e\u5b9a\uff0c\u91cc\u9762\u7684\u6548\u679c\u518d\u53bb\u6539\u53d8\u5c31\u4e0d\u592a\u5bb9\u6613\u3002\u4f8b\u5982\uff0c\u6709\u4e00\u4e2a\u4e91\u6735JPG\u56fe\u7247\uff0c\u60f3\u8981\u8ba9\u8fd9\u4e2a\u56fe\u7247\u4e2d\u7684\u4e91\u6735\u6162\u6162\u53d8\u5f62\uff0c\u79fb\u52a8\uff0c\u5c31\u5f88\u96be\u5b9e\u73b0\u3002<\/p>\n<p>\u6709\u6ca1\u6709\u4ec0\u4e48\u529e\u6cd5\u53ef\u4ee5\u6a21\u62df\u81ea\u7136\u754c\u771f\u5b9e\u4e8b\u7269\u90a3\u6837\u7684\u968f\u673a\u6837\u5f0f\u6548\u679c\u5462\uff1f<\/p>\n<p>feTurbulence\u6e4d\u6d41\u6ee4\u955c\u5c31\u6709\u8fd9\u6837\u7684\u80fd\u529b\uff0c\u53ef\u4ee5\u7528\u6765<strong>\u5b9e\u73b0\u4e91\u6735\u3001\u5927\u7406\u77f3\u8d28\u611f\u3001\u70df\u96fe\u3001\u706b\u7130\u6548\u679c\u7b49\u5f88\u591a\u5f88\u9177\u7684\u6548\u679c<\/strong>\uff08\u672c\u6587\u540e\u534a\u90e8\u5206\u4f1a\u6709\u793a\u610f\uff09\u3002<\/p>\n<p>feTurbulence\u6ee4\u955c\u521b\u5efa\u7684\u56fe\u50cf\u6548\u679c\u91c7\u7528\u7684\u662fPerlin\u6e4d\u6d41\u51fd\u6570\u7b97\u6cd5\uff0c\u53ef\u4ee5\u751f\u6210Perlin Noise\uff08Perlin\u566a\u58f0\u3001\u67cf\u6797\u566a\u58f0\uff09\u3002<\/p>\n<h4>Perlin\u566a\u58f0<\/h4>\n<p>Perlin\u566a\u58f0\u662f1983\u5e74Ken Perlin\u5f00\u53d1\u7684\u4e00\u79cd\u68af\u5ea6\u566a\u58f0\uff0c\u5176\u539f\u56e0\u662f\u5f53\u65f6\u4ed6\u5bf9\u8ba1\u7b97\u673a\u751f\u6210\u56fe\u50cf\uff08CGI\uff09\u7684\u201c\u673a\u5668\u5f0f\u201d\u5916\u89c2\u611f\u5230\u5931\u671b\u3002<\/p>\n<p>Ken Perlin\u4e8e1985\u5e74\u5728\u4e00\u4efd\u540d\u4e3a\u56fe\u50cf\u5408\u6210\u5668\u7684SIGGRAPH\u8bba\u6587\u4e2d\u6b63\u5f0f\u63cf\u8ff0\u4e86\u4ed6\u7684\u53d1\u73b0\uff0c\u5e76\u4e8e1997\u5e74\u56e0\u4e3a\u521b\u9020\u4e86\u8fd9\u4e2a\u7b97\u6cd5\u800c\u83b7\u5f97\u4e86\u5965\u65af\u5361\u6280\u672f\u6210\u5c31\u5956\u3002<\/p>\n<blockquote><p>\u6280\u672f\u6210\u5c31\u5956\u662f\u7f8e\u56fd\u7535\u5f71\u827a\u672f\u4e0e\u79d1\u5b66\u9662\u4e0d\u65f6\u9881\u53d1\u7684\u4e09\u9879\u79d1\u6280\u5956\u9879\u4e4b\u4e00\uff0c\u6280\u672f\u6210\u5c31\u5956\u662f\u4e00\u9879\u8363\u8a89\u5956\uff0c\u6bcf\u5e74\u9881\u53d1\u7ed9\u90a3\u4e9b\u6709\u7279\u6b8a\u6280\u672f\u6210\u5c31\u4e3a\u7535\u5f71\u5de5\u4e1a\u8fdb\u6b65\u4f5c\u51fa\u8d21\u732e\u7684\u4eba\u3002\u8fd9\u4e2a\u5956\u9879\u662f\u4e00\u79cd\u8bc1\u4e66\uff0c\u5b83\u63cf\u8ff0\u4e86\u6240\u53d6\u5f97\u7684\u6210\u5c31\uff0c\u5e76\u5217\u51fa\u4e86\u90a3\u4e9b\u56e0\u7279\u6b8a\u8d21\u732e\u800c\u83b7\u5f97\u8363\u8a89\u7684\u4eba\u7684\u540d\u5b57\u3002\u8fd9\u4e9b\u5956\u9879\u901a\u5e38\u662f\u5728\u5965\u65af\u5361\u9881\u5956\u5178\u793c\u64ad\u51fa\u524d\u51e0\u5468\u4e3e\u884c\u7684\u665a\u5bb4\u4e0a\u9881\u53d1\u7684\uff0c\u5965\u65af\u5361\u7535\u89c6\u8f6c\u64ad\u4e2d\u4f1a\u64ad\u653e\u4e00\u6bb5\u7b80\u77ed\u7684\u8282\u9009\u3002<\/p><\/blockquote>\n<p>\u4e4b\u6240\u4ee5Ken Perlin\u83b7\u5f97\u5965\u65af\u5361\u6280\u672f\u6210\u5c31\u5956\uff0c\u662f\u56e0\u4e3aKen Perlin\u5f00\u53d1\u7684Perlin\u566a\u58f0\u53ef\u4ee5\u5728\u8ba1\u7b97\u673a\u4e2d\u8ba9\u7269\u4f53\u7684\u8868\u9762\u4ea7\u751f\u81ea\u7136\u7eb9\u7406\u4ee5\uff0c\u4e8e\u662f\u53ef\u4ee5\u5f97\u5230\u975e\u5e38\u771f\u5b9e\u81ea\u7136\u7684\u7535\u5f71\u89c6\u89c9\u6548\u679c\uff0c\u5e73\u5e38\u6211\u4eec\u53e3\u4e2d\u8bf4\u9053\u7684\u7535\u5f71\u7279\u6548\uff0c\u5c24\u5176\u90a3\u4e9b\u590d\u6742\u7684\u81ea\u7136\u73b0\u8c61\u7684\u6a21\u62df\uff0c\u5176\u80cc\u540e\u90fd\u79bb\u4e0d\u5f00Perlin\u566a\u58f0\u3002<\/p>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u6211\u4eec\u73a9\u8f6c\u4e86feTurbulence\u6ee4\u955c\uff0c\u4e5f\u5c31\u83b7\u5f97\u4e86\u5728Web\u4e2d\u6a21\u62df\u81ea\u7136\u73b0\u8c61\u89c6\u89c9\u8868\u73b0\u7684\u80fd\u529b\uff0c\u90a3\u53ef\u5c31\u662f\u4e0d\u53ef\u591a\u5f97\u7684\u89c6\u89c9\u8868\u73b0\u9886\u57df\u7684\u4eba\u624d\u4e86\u3002<\/p>\n<h4>Perlin\u6e4d\u6d41\u7b97\u6cd5\/Perlin\u566a\u58f0\u7b97\u6cd5<\/h4>\n<p>\u662f\u4e00\u79cd\u4f2a\u968f\u673a\u7b97\u6cd5\u3002<\/p>\n<p>\u5177\u4f53\u7b97\u6cd5\u5982\u4f55\uff0c\u7cbe\u529b\u6709\u9650\uff0c\u4e5f\u6ca1\u5fc5\u8981\uff0c\u6211\u5c31\u6ca1\u6df1\u5165\uff0c\u6709\u5174\u8da3\u53ef\u4ee5\u53c2\u89c1\u6b64\u6587\uff1a\u201c<a href=\"https:\/\/www.jianshu.com\/p\/987b1349c94d\">PerlinNoise-C#\u67cf\u6797\u566a\u58f0\u7684\u63a2\u8ba8\u4e0e\u5b9e\u73b0<\/a>\u201d<\/p>\n<p>\u6211\u4ecewiki\u4e0a\u627e\u4e86\u4e24\u5f20\u539f\u7406\u793a\u610f\u56fe\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202007\/PerlinNoiseGradientGrid.png\" width=\"429\" height=\"200\" alt=\"Perlin\u566a\u58f0\u7b97\u6cd5\u539f\u7406\u793a\u610f1\"><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202007\/PerlinNoiseDotProducts-s.png\" width=\"447\" height=\"252\" alt=\"Perlin\u566a\u58f0\u7b97\u6cd5\u539f\u7406\u793a\u610f2\"><\/p>\n<h3>\u4e8c\u3001feTurbulence\u6ee4\u955c\u7684\u5c5e\u6027\u548c\u542b\u4e49<\/h3>\n<p>feTurbulence\u6ee4\u955c\u652f\u6301\u4e0b\u97625\u4e2a\u4e13\u6709\u7684html\u5c5e\u6027\uff1a<\/p>\n<ul>\n<li><code><a href=\"#baseFrequency\">baseFrequency<\/a><\/code><\/li>\n<li><code><a href=\"#numOctaves\">numOctaves<\/a><\/code><\/li>\n<li><code><a href=\"#seed\">seed<\/a><\/code><\/li>\n<li><code><a href=\"#stitchTiles\">stitchTiles<\/a><\/code><\/li>\n<li><code><a href=\"#type\">type<\/a><\/code><\/li>\n<\/ul>\n<p>\u4e00\u4e2a\u4e00\u4e2a\u6765\u770b\u4e0b\u662f\u4ec0\u4e48\u542b\u4e49\u3002<\/p>\n<h4 id=\"#baseFrequency\">1. baseFrequency<\/h4>\n<p><code>baseFrequency<\/code>\u8868\u793a\u566a\u58f0\u7684\u57fa\u672c\u9891\u7387\u53c2\u6570\uff0c\u9ed8\u8ba4\u503c\u662f0\uff0c\u9891\u7387\u8d8a\u9ad8\uff0c\u566a\u58f0\u8d8a\u5bc6\u96c6\u3002<\/p>\n<p>\u770b\u4e00\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<pre>&lt;svg viewBox=\"0 0 300 200\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"&gt;\r\n  &lt;filter id=\"noise\" x=\"0\" y=\"0\" width=\"100%\" height=\"100%\"&gt;\r\n    &lt;feTurbulence id=\"feTurbulence\" <span style=\"color:#cd0000;\">baseFrequency=\"0.05\"<\/span> \/&gt;\r\n  &lt;\/filter&gt;\r\n\r\n  &lt;rect x=\"0\" y=\"0\" width=\"300\" height=\"200\" style=\"filter: url(#noise);\" \/&gt;\r\n&lt;\/svg&gt;<\/pre>\n<p>feTurbulence\u6ee4\u955c\u6700\u57fa\u7840\u7684\u6548\u679c\uff0c\u8bbe\u7f6e\u4e86<code>baseFrequency<\/code>\u566a\u58f0\u7684\u57fa\u7840\u9891\u7387\u503c\u662f<code>0.05<\/code><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202007\/2020-07-24_133219.jpg\" width=\"419\" height=\"350\" alt=\"\"><\/p>\n<p>\u5982\u679c\u589e\u52a0\u4e00\u4e2a\u6ed1\u6746\uff0c\u6539\u53d8<code>&lt;feTurbulence&gt;<\/code>\u5143\u7d20\u4e2d<code>baseFrequency<\/code>\u5c5e\u6027\u503c\uff0c\u5c31\u53ef\u4ee5\u770b\u5230SVG\u5143\u7d20\u4e2d\u7684\u566a\u58f0\u6570\u91cf\u548c\u5bc6\u5ea6\u5728\u4e0d\u505c\u5730\u53d8\u5316\u3002<\/p>\n<p>\u89c6\u9891\u6548\u679c\u5982\u4e0b\uff0c\u70b9\u51fb\u6b64<button>\u6309\u94ae<\/button>\u64ad\u653e\u3002<\/p>\n<div class=\"video\" style=\"width:412px; height:344px;background: url(https:\/\/image.zhangxinxu.com\/image\/blog\/202007\/2020-07-24_133219.jpg) center;\"><\/div>\n<p>\u4f60\u4e5f\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\u8fdb\u884c\u6548\u679c\u4f53\u9a8c\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202007\/svg-feturbulence-basefrequency-demo.php\" target=\"_blank\">baseFrequency\u5c5e\u6027\u503c\u53d8\u5316\u5b9e\u65f6\u6548\u679c\u4f53\u9a8cdemo<\/a><\/p>\n<p>\u5f88\u591a\u4eba\u4e00\u770b\u4e0a\u9762\u7684\u622a\u56fe\u6216\u89c6\u9891\u6548\u679c\uff0c\u4e00\u8138\u61f5\u903c\uff0c\u8fd9\u90fd\u662f\u4ec0\u4e48\u9b3c\u6548\u679c\uff0c\u626d\u626d\u66f2\u66f2\uff0c\u50cf\u4e00\u5806\u5c0f\u866b\u5b50\u4e00\u6837\uff0c\u6a21\u62df\u4e91\u96fe\uff1f\u6a21\u62df\u706b\u7130\uff1f\u8fd9\u5dee\u522b\u5341\u4e07\u516b\u5343\u91cc\u4e86\u5427\uff01<\/p>\n<p>\u7a0d\u5b89\uff0c\u53ef\u4ee5\u6a21\u62df\uff0c\u4e0d\u8981\u88ab\u8868\u8c61\u6240\u8499\u9a97\uff0c\u8fd9\u4e2a\u540e\u9762\u4f1a\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u7edd\u5bf9\u8ba9\u4f60\u5927\u5f00\u773c\u754c\uff0c\u73b0\u5728\uff0c\u6211\u4eec\u5148\u628a\u7406\u8bba\u77e5\u8bc6\u592f\u5b9e\uff0c\u5404\u4e2a\u5c5e\u6027\u4f5c\u7528\u548c\u57fa\u672c\u6548\u679c\u4e86\u89e3\u6e05\u695a\u3002<\/p>\n<h4>2. numOctaves<\/h4>\n<p>\u5355\u8bcd<code>octave<\/code>\u5728\u82f1\u6587\u4e2d\u7684\u610f\u601d\u662f\u201c\u516b\u5ea6\u201d\uff0c\u5c31\u662f\u5531\u6b4c\u65f6\u5019\u58f0\u97f3\u9ad8\u4e00\u4e2a\u516b\u5ea6\u7684\u90a3\u4e2a\u516b\u5ea6\uff0c\u5728\u8fd9\u91cc\u662f\u201c\u500d\u9891\u201d\u7684\u610f\u601d\u3002<\/p>\n<p>\u8fd9\u91cc\u7684\u500d\u9891\u53ef\u4ee5\u7406\u89e3\u4e3a\u7531\u9891\u7387\u548c\u632f\u5e45\u5b9a\u4e49\u7684\u566a\u58f0\u51fd\u6570\u3002feTurbulence\u6ee4\u955c\u6548\u679c\u5c31\u662f\u901a\u8fc7\u9891\u7387\u589e\u52a0\u800c\u5e45\u5ea6\u51cf\u5c0f\u7684\u51e0\u4e2a\u500d\u9891\u53e0\u52a0\u5efa\u7acb\u8d77\u6765\u7684\u3002<\/p>\n<p>\u500d\u9891\u7684\u6570\u91cf\u8d8a\u591a\uff0c\u566a\u58f0\u770b\u8d77\u6765\u8d8a\u81ea\u7136\uff0c\u4f46\u662f\u4e5f\u4f1a\u5e26\u6765\u66f4\u591a\u7684\u8ba1\u7b97\uff0c\u5bf9\u6027\u80fd\u4f1a\u4ea7\u751f\u8d1f\u9762\u5f71\u54cd\u3002<\/p>\n<p>\u5c5e\u6027<code>numOctaves<\/code>\u5c31\u8868\u793a\u500d\u9891\u7684\u6570\u91cf\uff0c\u9ed8\u8ba4\u503c\u662f1\uff0c\u4e0d\u80fd\u662f\u5c0f\u6570\uff0c\u53ea\u80fd\u662f\u6574\u6570\uff0c\u5982\u679c\u662f\u5c0f\u6570\u4f1a\u5f53\u4f5c\u9ed8\u8ba4\u503c1\u5904\u7406\u3002<\/p>\n<p>\u5e76\u4e14\u6839\u636e\u6d4b\u8bd5\uff0c<code>numOctaves<\/code>\u7684\u5c5e\u6027\u503c\u5927\u5230\u4e00\u5b9a\u7a0b\u5ea6\u540e\uff0c\u5c31\u770b\u4e0d\u5230\u660e\u663e\u53d8\u5316\u4e86\uff0c\u5177\u4f53\u591a\u5927\u7684\u503c\u548c<code>baseFrequency<\/code>\u5c5e\u6027\u7684\u503c\u5bc6\u5207\u76f8\u5173\uff0c\u6839\u636e\u6d4b\u8bd5\u548c\u8089\u773c\u8bc6\u522b\uff1a<\/p>\n<ul>\n<li>baseFrequency\u503c\u662f0.05\uff0c\u5982\u679c<code>numOctaves<\/code>\u7684\u5c5e\u6027\u503c\u5927\u4e8e3\uff0c\u4f8b\u59824\u6216\u80055\uff0c\u6e32\u67d3\u6548\u679c\u548c3\u6ca1\u6709\u533a\u522b\u3002<\/li>\n<li>baseFrequency\u503c\u662f0.02\uff0c\u5982\u679c<code>numOctaves<\/code>\u7684\u5c5e\u6027\u503c\u4e3a4\uff0c\u6211\u4eec\u8fd8\u662f\u53ef\u4ee5\u770b\u5230\u5fae\u5c0f\u7684\u53d8\u5316\uff0c\u5982\u679c\u503c\u4e3a5\uff0c\u5219\u51e0\u4e4e\u770b\u4e0d\u51fa\u548c4\u6709\u4ec0\u4e48\u533a\u522b\u3002<\/li>\n<li>baseFrequency\u503c\u662f0.01\uff0c\u5982\u679c<code>numOctaves<\/code>\u7684\u5c5e\u6027\u503c\u662f4\u6216\u80055\u7684\u65f6\u5019\u90fd\u53ef\u4ee5\u770b\u5230\u4e00\u4e9b\u7ec6\u5c0f\u7684\u53d8\u5316\u3002<\/li>\n<\/ul>\n<p>\u770b\u4e0b\u5b9e\u9645\u6548\u679c\uff1a<\/p>\n<pre>&lt;svg viewBox=\"0 0 300 200\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"&gt;\r\n  &lt;filter id=\"noise\" x=\"0\" y=\"0\" width=\"100%\" height=\"100%\"&gt;\r\n    &lt;feTurbulence id=\"feTurbulence\" baseFrequency=\"0.02\" <span style=\"color:#cd0000;\">numOctaves=\"1\"<\/span> \/&gt;\r\n  &lt;\/filter&gt;\r\n\r\n  &lt;rect x=\"0\" y=\"0\" width=\"300\" height=\"200\" style=\"filter: url(#noise);\" \/&gt;\r\n&lt;\/svg&gt;<\/pre>\n<p><code>numOctaves<\/code>\u5c5e\u6027\u503c\u6b64\u65f6\u5206\u522b\u662f1-3\u7684\u6548\u679c\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202007\/2020-07-24_162659.jpg\" width=\"662\" height=\"142\" alt=\"numOctaves\u5c5e\u6027\u503c\u6548\u679c\u793a\u610f\"><\/p>\n<p>\u4f60\u4e5f\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\u8fdb\u884c\u6548\u679c\u4f53\u9a8c\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202007\/svg-feturbulence-numoctaves-demo.php\" target=\"_blank\">numOctaves\u5c5e\u6027\u503c\u53d8\u5316\u5b9e\u65f6\u6548\u679c\u4f53\u9a8cdemo<\/a><\/p>\n<h4>3. seed<\/h4>\n<p><code>seed<\/code>\u5c5e\u6027\u8868\u793afeTurbulence\u6ee4\u955c\u6548\u679c\u4e2d\u4f2a\u968f\u673a\u6570\u751f\u6210\u7684\u8d77\u59cb\u503c\uff0c\u6ce8\u610f\uff0c\u662f\u8d77\u59cb\u503c\uff0c\u5e76\u4e0d\u662f\u968f\u673a\u6570\u91cf\u3002\u56e0\u6b64\uff0c\u4e0d\u540c\u6570\u91cf\u7684<code>seed<\/code>\u4e0d\u4f1a\u6539\u53d8\u566a\u58f0\u7684\u9891\u7387\u548c\u5bc6\u5ea6\uff0c\u6539\u53d8\u7684\u662f\u566a\u58f0\u7684\u5f62\u72b6\u548c\u4f4d\u7f6e\u3002<\/p>\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff1a<\/p>\n<pre>&lt;svg viewBox=\"0 0 300 200\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"&gt;\r\n  &lt;filter id=\"noise\" x=\"0\" y=\"0\" width=\"100%\" height=\"100%\"&gt;\r\n    &lt;feTurbulence id=\"feTurbulence\" baseFrequency=\"0.02\" <span style=\"color:#cd0000;\">seed=\"0\"<\/span> \/&gt;\r\n  &lt;\/filter&gt;\r\n\r\n  &lt;rect x=\"0\" y=\"0\" width=\"300\" height=\"200\" style=\"filter: url(#noise);\" \/&gt;\r\n&lt;\/svg&gt;<\/pre>\n<p>\u6b64\u65f6\u4e0d\u540c\u7684<code>seed<\/code>\u5c5e\u6027\u503c\u5c31\u4f1a\u6709\u4e0d\u540c\u7684\u753b\u9762\uff0c\u4f46\u662f\u6574\u4f53\u7684\u5bc6\u5ea6\u5374\u662f\u4e00\u81f4\u7684\u3002<\/p>\n<p>\u4e0b\u56fe\u662f<code>seed<\/code>\u503c\u5206\u522b\u662f0\uff08\u9ed8\u8ba4\u503c\uff09\uff0c47\uff0c92\u65f6\u5019\u7684\u6548\u679c\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202008\/2020-08-06_211851.jpg\" width=\"728\" height=\"201\" alt=\"\u4e0d\u540cseed\u503c\u4e0b\u7684\u6548\u679c \u5f20\u946b\u65ed\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202008\/svg-feturbulence-seed-demo.php\" rel=\"noopener\" target=\"_blank\">SVG feTurbulence\u6ee4\u955cseed\u5c5e\u6027\u6f14\u793ademo<\/a><\/p>\n<h4>4. stitchTiles<\/h4>\n<p><code>stitchTiles<\/code>\u5b9a\u4e49\u4e86Perlin\u566a\u58f0\u5728\u8fb9\u6846\u5904\u7684\u884c\u4e3a\u8868\u73b0\u3002<\/p>\n<p>\u652f\u6301\u4e24\u4e2a\u5c5e\u6027\u503c\uff0c\u5206\u522b\u662f<code>noStitch<\/code>\u548c<code>stitch<\/code><\/p>\n<p>\u5176\u4e2d\u5355\u8bcdstitch\u662f\u201c\u7f1d\u7f1d\u8865\u8865\u201d\u7684\u610f\u601d\u3002<\/p>\n<p>\u4e24\u4e2a\u5c5e\u6027\u503c\u5177\u4f53\u7684\u542b\u4e49\u5982\u4e0b\uff1a<\/p>\n<dl>\n<dt><strong>noStitch<\/strong><\/dt>\n<dd>\u9ed8\u8ba4\u503c\u3002\u8868\u793a\u5982\u679cSVG\u4e2d\u6709\u591a\u4e2a\u5143\u7d20\u540c\u65f6\u4f7f\u7528\u4e86feTurbulence\u6ee4\u955c\u6548\u679c\uff0c\u5219\u5728\u5404\u4e2a\u5143\u7d20\u7684\u8fb9\u754c\u5904\u7684\u6e4d\u6d41\u5404\u81ea\u4e3a\u653f\uff0c\u56e0\u6b64\uff0c\u4e0d\u4f1a\u8868\u73b0\u4e3a\u5e73\u6ed1\u3002<\/dd>\n<dt><strong>stitch<\/strong><\/dt>\n<dd>\u8868\u793a\u4f1a\u81ea\u52a8\u8c03\u6574\u5750\u6807\uff0c\u8ba9\u4e0b\u4e00\u4e2a\u566a\u58f0\u56fe\u5f62\u5e94\u7528\u4e0a\u4e00\u4e2a\u566a\u58f0\u56fe\u5f62\u7684\u5bbd\u9ad8\u7b49\u6570\u636e\uff0c\u5982\u679c\u8fd9\u51e0\u4e2a\u5143\u7d20\u76f8\u4e92\u8fde\u63a5\uff0c\u5219\u4f1a\u770b\u5230\u5e73\u6ed1\u7684\u8fb9\u754c\u6548\u679c\u3002<\/dd>\n<\/dl>\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6e90\u81eaMDN\uff0c\u6e90\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>&lt;svg viewBox=\"0 0 420 200\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"&gt;\r\n  &lt;filter id=\"noise1\" x=\"0\" y=\"0\" width=\"100%\" height=\"100%\"&gt;\r\n    &lt;feTurbulence baseFrequency=\"0.025\" stitchTiles=\"noStitch\" \/&gt;\r\n  &lt;\/filter&gt;\r\n  &lt;filter id=\"noise2\" x=\"0\" y=\"0\" width=\"100%\" height=\"100%\"&gt;\r\n    &lt;feTurbulence baseFrequency=\"0.025\" stitchTiles=\"stitch\" \/&gt;\r\n  &lt;\/filter&gt;\r\n\r\n  &lt;rect x=\"0\" y=\"0\" width=\"100\" height=\"100\" style=\"filter: url(#noise1);\" \/&gt;\r\n  &lt;rect x=\"0\" y=\"0\" width=\"100\" height=\"100\" style=\"filter: url(#noise1); transform: translate(100px, 0);\" \/&gt;\r\n  &lt;rect x=\"0\" y=\"0\" width=\"100\" height=\"100\" style=\"filter: url(#noise1); transform: translate(0, 100px);\" \/&gt;\r\n  &lt;rect x=\"0\" y=\"0\" width=\"100\" height=\"100\" style=\"filter: url(#noise1); transform: translate(100px, 100px);\" \/&gt;\r\n\r\n  &lt;rect x=\"0\" y=\"0\" width=\"100\" height=\"100\" style=\"filter: url(#noise2); transform: translate(220px, 0);\" \/&gt;\r\n  &lt;rect x=\"0\" y=\"0\" width=\"100\" height=\"100\" style=\"filter: url(#noise2); transform: translate(320px, 0);\" \/&gt;\r\n  &lt;rect x=\"0\" y=\"0\" width=\"100\" height=\"100\" style=\"filter: url(#noise2); transform: translate(220px, 100px);\" \/&gt;\r\n  &lt;rect x=\"0\" y=\"0\" width=\"100\" height=\"100\" style=\"filter: url(#noise2); transform: translate(320px, 100px);\" \/&gt;\r\n&lt;\/svg&gt;<\/pre>\n<p>\u6548\u679c\u5982\u4e0b\u622a\u56fe\u6240\u793a\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202008\/2020-08-06_220140.jpg\" width=\"546\" height=\"313\" alt=\"stitchTiles\u6548\u679c\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<h4>5. type<\/h4>\n<p>\u5f88\u591aSVG\u6ee4\u955c\u90fd\u6709<code>type<\/code>\u5c5e\u6027\uff0c\u4e0d\u540c\u7684\u6ee4\u955c\u4f7f\u7528\u7684<code>type<\/code>\u5c5e\u6027\u503c\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u5bf9\u4e8e<code>&lt;feTurbulence&gt;<\/code>\u5143\u7d20\uff0c\u652f\u6301\u7684<code>type<\/code>\u5c5e\u6027\u503c\u662f<code>fractalNoise<\/code>\u548c<code>turbulence<\/code>\u3002<\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<dl>\n<dt><strong>turbulence<\/strong><\/dt>\n<dd>\u9ed8\u8ba4\u503c\u3002\u8868\u793a\u6e4d\u6d41\u3001\u6df7\u4e71\u3002<\/dd>\n<dt><strong>fractalNoise<\/strong><\/dt>\n<dd>\u8868\u793a\u5206\u5f62\u566a\u58f0\u3002<\/dd>\n<\/dl>\n<p>\u4e24\u8005\u7684\u6548\u679c\u5bf9\u6bd4\u5982\u4e0b\u56fe\u6240\u793a\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202008\/2020-08-06_221103.jpg\" width=\"655\" height=\"232\" alt=\"\u6e4d\u6d41\u548c\u566a\u58f0\u6548\u679c\u5bf9\u6bd4\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u524d\u8005\u50cf\u7409\u7483\u73bb\u7483\uff0c\u540e\u8005\u50cf\u78e8\u7802\u73bb\u7483\u3002<\/p>\n<p>\u6709\u5bf9\u5e94\u7684\u6f14\u793a\u9875\u9762\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202008\/svg-feturbulence-turbulence-fractalnoise-demo.php\" rel=\"noopener\" target=\"_blank\">SVG fractalNoise\u548cturbulence\u7c7b\u578bdemo<\/a><\/p>\n<p>\u597d\u4e86\uff0cfeTurbulence\u6ee4\u955c\u57fa\u672c\u5c5e\u6027\u5df2\u7ecf\u4ecb\u7ecd\u5b8c\u6bd5\u4e86\u3002<\/p>\n<p>\u770b\u8d77\u6765\uff0c\u8fd9\u4e9b\u5c5e\u6027\u4e5f\u6ca1\u6709\u4ec0\u4e48\u7279\u522b\u561b\uff0c\u51fa\u73b0\u7684\u6548\u679c\u90fd\u662f\u4e2a\u4ec0\u4e48\u9b3c\u4e1c\u897f\uff0c\u6839\u672c\u5c31\u4e0d\u80fd\u7528\u561b\uff01<\/p>\n<p>\u51e1\u4e8b\u4e0d\u80fd\u53ea\u770b\u8868\u9762\uff0cfeTurbulence\u6ee4\u955c\u8981\u60f3\u771f\u6b63\u53d1\u6325\u4f5c\u7528\uff0c\u662f\u9700\u8981\u548c\u5176\u4ed6\u4e1c\u897f\u7ec4\u5408\u4f7f\u7528\u7684\u3002<\/p>\n<p>\u4e0b\u9762\u5e26\u5927\u5bb6\u770b\u770bfeTurbulence\u6ee4\u955c\u90fd\u53ef\u4ee5\u5b9e\u73b0\u54ea\u4e9b\u6548\u679c\u3002<\/p>\n<p><span class=\"hidden\">\/\/zxx: \u5982\u679c\u4f60\u770b\u5230\u8fd9\u6bb5\u6587\u5b57\uff0c\u8bf4\u660e\u4f60\u73b0\u5728\u8bbf\u95ee\u662f\u4f53\u9a8c\u7cdf\u7cd5\u7684\u5783\u573e\u76d7\u7248\u7f51\u7ad9\uff0c\u4f60\u53ef\u4ee5\u8bbf\u95ee\u539f\u6587\u83b7\u5f97\u5f88\u597d\u7684\u4f53\u9a8c\uff1ahttps:\/\/www.zhangxinxu.com\/wordpress\/?p=9502\uff08\u4f5c\u8005\u5f20\u946b\u65ed\uff09<\/span><\/p>\n<h3>\u4e09\u3001feDisplacementMap\u6ee4\u955c\u5171\u540c\u5b9e\u73b0\u7684\u81ea\u7136\u6548\u679c<\/h3>\n<p>SVG feDisplacementMap\u6ee4\u955c\u4e5f\u662fSVG\u6ee4\u955c\u5bb6\u65cf\u51fa\u955c\u7387\u6781\u9ad8\u7684\u4e00\u4e2aSVG\u6ee4\u955c\uff0c\u53ef\u4ee5\u8ba9\u56fe\u5f62\u6309\u7167R\u3001G\u3001B\u901a\u9053\u7684\u989c\u8272\u8fdb\u884c\u4f4d\u7f6e\u7684\u504f\u79fb\uff0c\u4ece\u800c\u8ba9\u56fe\u5f62\u4ea7\u751f\u5404\u79cd\u5f62\u53d8\u7684\u6548\u679c\uff0c\u5173\u4e8efeDisplacementMap\u6ee4\u955c\uff0c\u6211\u4e4b\u524d\u5df2\u7ecf\u6df1\u5165\u4ecb\u7ecd\u8fc7\u4e86\uff0c\u8be6\u89c1\u201c<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/2017\/12\/understand-svg-fedisplacementmap-filter\/\">\u6df1\u5165\u7406\u89e3SVG feDisplacementMap\u6ee4\u955c\u53ca\u5b9e\u9645\u5e94\u7528<\/a>\u201d\u3002<\/p>\n<p>\u56de\u5230\u8fd9\u91cc\u3002<\/p>\n<p>\u7531\u4e8efeTurbulence\u6ee4\u955c\u53ef\u4ee5\u521b\u5efa\u968f\u673a\u7684\u566a\u70b9\u548c\u6e4d\u6d41\uff0c\u56e0\u6b64\uff0c\u5f53feTurbulence\u6ee4\u955c\u548cfeDisplacementMap\u6ee4\u955c\u540c\u65f6\u5e94\u7528\u7684\u65f6\u5019\uff0c\u5c31\u4f1a\u8ba9\u56fe\u5f62\u6216\u56fe\u50cf\u6709\u7b26\u5408\u81ea\u7136\u6548\u679c\u7684\u626d\u66f2\u6548\u679c\u3002<\/p>\n<p>\u8fd9\u91cc\u4e3e\u4e24\u4e2a\u4f8b\u5b50\uff0c\u4e00\u4e2a\u662f\u6c34\u6ce2\u5012\u5f71\u6548\u679c\uff0c\u4e00\u4e2a\u662f\u4e91\u6735\u6548\u679c\u3002<\/p>\n<p>\u6c34\u6ce2\u5012\u5f71\u7684\u53c2\u6570\u53c2\u8003<a href=\"https:\/\/wow.techbrood.com\/fiddle\/31650\" rel=\"noopener nofollow\" target=\"_blank\">\u8fd9\u91cc<\/a>\uff0c\u6709\u6539\u8fdb\u548c\u4f18\u5316\uff0c\u4e91\u6735\u6548\u679c\u53c2\u8003<a href=\"https:\/\/codepen.io\/beauhaus\/pen\/QJrpPY\" rel=\"noopener nofollow\" target=\"_blank\">\u8fd9\u4e2aCodePen<\/a>\uff0c\u540c\u6837\u5728\u5de8\u4eba\u7684\u80a9\u4e0a\u6709\u6240\u6539\u8fdb\u3002<\/p>\n<h4>1. \u6c34\u6ce2\u5012\u5f71<\/h4>\n<p>\u5148\u770b\u4e0b\u5b9e\u73b0\u7684\u6548\u679c\uff0c\u5982\u4e0b\u89c6\u9891\u6240\u793a\uff08\u4e0d\u52a8\u70b9\u51fb\u64ad\u653e &#8211; 400.4K\uff09\uff1a<\/p>\n<p><video src='https:\/\/image.zhangxinxu.com\/video\/blog\/202010\/reflect.mp4' type=\"video\/mp4\" width=\"400\" height=\"462\" preload=\"auto\" autoplay autobuffer loop x-webkit-airplay=\"allow\" x5-video-player-type=\"h5\" x5-video-player-fullscreen=\"true\" x5-video-orientation=\"portraint\" webkit-playsinline=\"true\" playsinline=\"true\"><\/video><\/p>\n<p>\u6c34\u5e73\u5982\u955c\uff0c\u78a7\u6ce2\u8361\u6f3e\u7684\u5012\u5f71\u6548\u679c\uff0c\u975e\u5e38\u903c\u771f\u6709\u8d28\u611f\u3002<\/p>\n<p>\u5b9e\u73b0\u539f\u7406\u5982\u4e0b\u3002<\/p>\n<p>\u9996\u5148HTML\u548cCSS\u90e8\u5206\uff0c\u5c31\u662f\u4e24\u4e2a<code>&lt;img&gt;<\/code>\u5143\u7d20\uff0c\u5176\u4e2d\u4e0b\u9762\u7684\u56fe\u6807\u5782\u76f4\u7ffb\u8f6c\uff0c\u7136\u540e\u5e94\u7528SVG\u6ee4\u955c\uff0c\u76f8\u5173\u4ee3\u7801\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>&lt;img src=\".\/moon-night.jpg\"&gt;\r\n&lt;img src=\".\/moon-night.jpg\" class=\"reflect\"&gt;<\/pre>\n<pre>.reflect {\r\n    transform: scaleY(-1);\r\n    filter: url(#displacementFilter);\r\n}<\/pre>\n<p>\u7136\u540e\u662f\u6700\u6700\u5173\u952e\uff0c\u4e5f\u662f\u96be\u70b9\u90e8\u5206\uff0cSVG\u6ee4\u955c\uff1a<\/p>\n<pre>&lt;svg width=\"0\" height=\"0\" style=\"posiotion:absolute;\"&gt;\r\n    &lt;filter id=\"displacementFilter\"&gt;\r\n        &lt;feTurbulence type=\"turbulence\" baseFrequency=\"0.01 .1\" numOctaves=\"1\" result=\"turbulence\" seed=\"53\" \/&gt;\r\n        &lt;feDisplacementMap in2=\"turbulence\" in=\"SourceGraphic\" scale=\"20\" xChannelSelector=\"R\" yChannelSelector=\"B\" \/&gt;\r\n    &lt;\/filter&gt;\r\n&lt;\/svg&gt;<\/pre>\n<p>\u8fd9\u91cc\u540c\u65f6\u5e94\u7528\u4e862\u4e2a\u6ee4\u955c\uff0c\u4e00\u4e2a\u662ffeTurbulence\u6ee4\u955c\uff0c\u6a21\u62df\u6e4d\u6d41\u3002<\/p>\n<p>\u5176\u4e2d<code>baseFrequency<\/code>\u7684\u5c5e\u6027\u503c\u7684\u6c34\u5e73\u548c\u5782\u76f4\u7684\u566a\u70b9\u9891\u7387\u6bd4\u662f1:10\uff0c\u56e0\u6b64\uff0c\u4f1a\u6709\u7c7b\u4f3c\u6c34\u5e73\u62c9\u4f38\u7684\u6548\u679c\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_143303.jpg\" width=\"397\" height=\"266\" alt=\"\u6c34\u5e73\u62c9\u4f38\u7684\u6e4d\u6d41\u6548\u679c\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>feDisplacementMap\u6ee4\u955c\u5219\u6839\u636eR\uff08\u7ea2\u8272\uff09\u901a\u9053\u8fdb\u884c\u6c34\u5e73\u65b9\u5411\u7684\u4f4d\u7f6e\u504f\u79fb\uff0c\u6839\u636eB\uff08\u84dd\u8272\uff09\u901a\u9053\u8fdb\u884c\u5782\u76f4\u65b9\u5411\u4f4d\u7f6e\u504f\u79fb\uff0c\u7531\u4e8e\u5f69\u8272\u6e4d\u6d41\u6c34\u5e73\u62c9\u4f38\u4e86\uff0c\u56e0\u6b64\uff0c\u6700\u7ec8\u7684\u6ee4\u955c\u6548\u679c\u5c31\u662f\u4e00\u4e2a\u6c34\u5e73\u65b9\u5411\u62c9\u4f38\u4e3a\u4e3b\u7684\u6db2\u5316\u6548\u679c\uff0c\u89c6\u89c9\u4e0a\u5c31\u50cf\u662f\u81ea\u7136\u754c\u6c34\u6ce2\u8361\u6f3e\u7684\u6548\u679c\u3002<\/p>\n<p>\u81f3\u4e8e\u89c6\u9891\u4e2d\u7684\u52a8\u753b\u6548\u679c\uff0c\u4f7f\u7528JS\u4e0d\u65ad\u6539\u53d8<code>baseFrequency<\/code>\u7684\u5c5e\u6027\u503c\u5373\u53ef\uff0c\u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202010\/svg-reflection-water-demo.php\" rel=\"noopener\" target=\"_blank\">\u903c\u771f\u7684\u6c34\u9762\u5012\u5f71\u8361\u6f3e\u6548\u679cdemo<\/a><\/p>\n<h4>2. \u4e91\u6735\u6548\u679c-\u7eaf\u767d<\/h4>\n<p>\u5148\u4ece\u7b80\u5355\u7684\u7eaf\u767d\u8272\u4e91\u6735\u8bf4\u8d77\uff0c\u5b9e\u73b0\u7684\u6548\u679c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_200242.jpg\" width=\"473\" height=\"292\" alt=\"\u767d\u8272\u4e91\u6735\u6548\u679c\u793a\u610f\" class=\"alignnone size-medium\" \/> <\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_200305.jpg\" width=\"481\" height=\"286\" alt=\"\u968f\u673a\u663e\u793a\u7684\u767d\u8272\u4e91\u6735\u6548\u679c\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u76f8\u5173\u4ee3\u7801\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>&lt;div class=\"cloud\"&gt;&lt;\/div&gt;<\/pre>\n<pre>.cloud {\r\n    width: 500px; height: 250px;\r\n    background: radial-gradient(closest-side, #fff 20%, #fffa 60%, #fff0 80%);\r\n    filter: url(#cloudRandom);\r\n}<\/pre>\n<p>\u5c31\u662f\u4e00\u4e2a\u767d\u8272\u7684\u5f84\u5411\u6e10\u53d8\u80cc\u666f\uff0c\u7136\u540e\u5e94\u7528\u4e86\u4e00\u4e2aSVG\u6ee4\u955c\uff0c\u6548\u679c\u5c31\u51fa\u6765\u4e86\u3002<\/p>\n<p>\u8fd9\u4e2aSVG\u6ee4\u955c\u7684\u4ee3\u7801\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<pre>&lt;svg width=\"0\" height=\"0\" style=\"position:absolute;\"&gt;\r\n    &lt;filter id=\"cloudRandom\"&gt;\r\n      &lt;feTurbulence type=\"fractalNoise\" baseFrequency=\"0.012\" numOctaves=\"4\" seed=\"0\" \/&gt; \r\n      &lt;feDisplacementMap in=\"SourceGraphic\" scale=\"170\" \/&gt;\r\n    &lt;\/filter&gt;\r\n&lt;\/svg&gt;<\/pre>\n<p>\u91cd\u70b9\u5173\u6ce8feTurbulence\u6ee4\u955c\u3002<\/p>\n<p>\u8fd9\u91cc\u4f7f\u7528\u7684\u7c7b\u578b\u4e0d\u662f\u6e4d\u6d41\uff0c\u800c\u662f\u566a\u70b9<code>fractalNoise<\/code>\u7c7b\u578b\uff0c\u901a\u5e38\u6c34\u6d41\u8bbe\u7f6e<code>type<\/code>\u5c5e\u6027\u503c\u4e3a<code>turbulence<\/code>\u7c7b\u578b\uff0c\u4e91\u96fe\u90fd\u662f\u8bbe\u7f6e\u503c\u4e3a<code>fractalNoise<\/code>\u3002<\/p>\n<p>\u5982\u679c\u5143\u7d20\u7684\u80cc\u666f\u8272\u5c31\u662f\u4e2a\u7eaf\u767d\u8272\uff0c\u800c\u4e0d\u662f\u767d\u8272\u6e10\u53d8\uff0c\u5219\u5e94\u7528\u6ee4\u955c\u540e\u7684\u6548\u679c\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_201337.png\" width=\"715\" height=\"201\" alt=\"\u7eaf\u8272\u5e94\u7528\u6ee4\u955c\u4e4b\u540e\u7684\u6548\u679c\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u6240\u4ee5\uff0c\u4e91\u6735\u6548\u679c\u7684\u5173\u952e\u5c31\u5728\u4e8e\u8fb9\u7f18\u6a21\u7cca\u7684\u767d\u8272\u56fe\u5f62\u3002<\/p>\n<p>\u8fb9\u7f18\u6a21\u7cca\u7684\u767d\u8272\u56fe\u5f62\u53ef\u4ee5\u4f7f\u7528<code>drop-shadow()<\/code>\u6ee4\u955c\u3001<code>blur()<\/code>\u6ee4\u955c\u521b\u5efa\uff0c\u4f46\u662f\u548c\u8fd9\u91cc\u7684SVG\u6ee4\u955c\u51b2\u7a81\u4e86\uff0c\u53ea\u80fd\u6807\u7b7e\u5d4c\u5957\u5b9e\u73b0\uff0c\u6709\u4e9b\u5570\u55e6\uff1b\u4e5f\u53ef\u4ee5\u4f7f\u7528<code>box-shadow<\/code>\u6a21\u62df\uff08<a href=\"https:\/\/codepen.io\/beauhaus\/pen\/QJrpPY\" rel=\"noopener\" target=\"_blank\">\u53c2\u8003\u7684CodePen<\/a>\u5c31\u662f\u8fd9\u4e48\u5b9e\u73b0\u7684\uff09\uff0c\u4f46\u662f<code>box-shadow<\/code>\u5b9a\u4f4d\u5f88\u5570\u55e6\uff0c\u5c3a\u5bf8\u8bbe\u7f6e\u4e5f\u4e0d\u7075\u6d3b\uff1b\u56e0\u6b64\uff0c\u6700\u597d\u7684\u65b9\u6cd5\u5c31\u662f\u4f7f\u7528\u5f84\u5411\u6e10\u53d8\u6a21\u62df\u767d\u8272\u6e10\u53d8\u6548\u679c\u3002<\/p>\n<p>\u56e0\u6b64\u5c31\u6709\u4e86\u4e0b\u56fe\u6240\u793a\u7684\u53d8\u5316\u8fc7\u7a0b\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_202214.png\" width=\"715\" height=\"195\" alt=\"\u5f84\u5411\u6e10\u53d8\u5230\u4e91\u6735\u7684\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202010\/svg-filter-cloud-demo.php\" rel=\"noopener\" target=\"_blank\">SVG\u6ee4\u955c\u767d\u4e91\u98d8\u98d8\u6548\u679cdemo<\/a><\/p>\n<p>\u70b9\u51fbdemo\u9875\u9762\u7684\u968f\u673a\u6309\u94ae\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u5404\u5f0f\u5404\u6837\u7684\u4e91\u6735\u6548\u679c\u5566\uff01<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_202700.png\" width=\"411\" height=\"342\" alt=\"\u968f\u673a\u4e91\u6735\u6309\u94ae\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u5982\u679c\u5b9e\u73b0\u968f\u673a\u6548\u679c\u7684\u5462\uff1f<\/p>\n<p>\u5f88\u7b80\u5355\uff0c\u6539\u53d8<code>&lt;feTurbulence&gt;<\/code>\u5143\u7d20\u7684<code>seed<\/code>\u5c5e\u6027\u503c\u5373\u53ef\uff0c<code>seed<\/code>\u5c5e\u6027\u5929\u751f\u5c31\u662f\u7528\u6765\u968f\u673a\u6e4d\u6d41\u548c\u566a\u70b9\u6548\u679c\u7684\u3002<\/p>\n<h4>3. \u4e91\u6735\u6548\u679c-\u5e26\u9634\u5f71<\/h4>\n<p>\u771f\u5b9e\u4e16\u754c\u7684\u4e91\u6735\u5f80\u5f80\u662f\u5e26\u6709\u4e00\u70b9\u4e4c\u4e91\u5728\u5176\u4e2d\u7684\uff0c\u5c24\u5176\u5728\u4e91\u5c42\u8f83\u539a\u7684\u65f6\u5019\uff0c\u8fd9\u4e2a\u540c\u6837\u53ef\u4ee5\u6a21\u62df\u3002<\/p>\n<p>\u539f\u7406\u5f88\u7b80\u5355\uff0c\u5c31\u662f\u5728\u539f\u6765\u7684\u767d\u8272\u4e91\u6735\u4e0a\u9762\u518d\u53e0\u52a0\u51e0\u4e2a\u6df1\u7070\u8272\u7684\u4e91\u6735\uff0c\u4e91\u6735\u89c4\u683c\u7565\u5c0f\uff0c\u4f4d\u7f6e\u7565\u4e0b\u3002<\/p>\n<p>\u4e0b\u56fe\u5c31\u662f\u771f\u5b9e\u7684\u4f7f\u7528CSS\u548cSVG\u6ee4\u955c\u6a21\u62df\u7684\u5e26\u9634\u5f71\u7684\u4e91\u6735\u6548\u679c\u622a\u56fe\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_202943.jpg\" width=\"423\" height=\"258\" alt=\"\u5e26\u9634\u5f71\u7684\u4e91\u6735\u6548\u679c-1\" class=\"alignnone size-medium\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_203009.jpg\" width=\"442\" height=\"244\" alt=\"\u5e26\u9634\u5f71\u7684\u4e91\u6735\u6548\u679c-2\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u76f8\u5173\u4ee3\u7801\u5982\u4e0b\u6240\u793a\uff0cHTML\u8fd9\u91cc\u4f7f\u75283\u4e2a\u72ec\u7acb\u7684\u6807\u7b7e\u5143\u7d20\uff1a<\/p>\n<pre>&lt;div class=\"cloud\"&gt;\r\n    &lt;i class=\"cloud-basic\"&gt;&lt;\/i&gt;\r\n    &lt;i class=\"cloud-mid\"&gt;&lt;\/i&gt;\r\n    &lt;i class=\"cloud-shadow\"&gt;&lt;\/i&gt;\r\n&lt;\/div&gt;<\/pre>\n<p>\u5206\u522b\u8868\u793a\u767d\u8272\u7684\u5e95\u90e8\u4e91\u6735\uff0c\u6df1\u4e00\u70b9\u7684\u4e2d\u95f4\u5c42\u4e91\u6735\uff0c\u548c\u6700\u6df1\u7684\u9634\u5f71\u4e91\u6735\uff0cCSS\u5982\u4e0b\uff1a<\/p>\n<pre><span style=\"color:green;\">\/* \u5e26\u9634\u5f71\u7684\u4e91\u6735 *\/<\/span>\r\n.cloud {\r\n    width: 500px; height: 250px;\r\n    margin: 3rem auto;\r\n}\r\n.cloud &gt; i {\r\n    position: absolute;\r\n    width: inherit; height: inherit;\r\n    border-radius: 50%;\r\n}\r\n.cloud-basic {\r\n    filter: url(#cloudBasic);\r\n    background: radial-gradient(closest-side, #fff 60%, transparent 80%)\r\n}\r\n.cloud-mid {\r\n    filter: url(#cloudShadow);\r\n    background: radial-gradient(closest-side at 50% 60%, rgba(100, 90, 80, 0.2), transparent 60%);\r\n}\r\n.cloud-shadow {\r\n    background: radial-gradient(closest-side at 50% 70%, rgba(0, 0, 0, 0.05), transparent 40%);\r\n    filter: url(#cloudShadow);\r\n}<\/pre>\n<p>\u4e5f\u5c31\u662f\u4e2d\u95f4\u5c42\u548c\u9634\u5f71\u5c42\u5c3a\u5bf8\u504f\u5c0f\u548c\u4f4d\u7f6e\u504f\u4e0b\u5168\u90e8\u90fd\u662f\u901a\u8fc7\u63a7\u5236\u5f84\u5411\u6e10\u53d8\u7684\u900f\u660e\u8fb9\u754c\u4f4d\u7f6e\u548c\u4e2d\u5fc3\u70b9\u4f4d\u7f6e\u5b9e\u73b0\u7684\u3002<\/p>\n<p>\u6700\u540e\uff0c\u662fSVG\u6ee4\u955c\u4ee3\u7801\uff0c\u5176\u4e2d<code>#cloudShadow<\/code>\u6ee4\u955c<code>numOctaves<\/code>\u5c5e\u6027\u503c\u5c0f\u4e00\u4e9b\uff0c\u8fd9\u6837\uff0c\u4e0d\u4f1a\u6709\u592a\u7a81\u51fa\u7684\u8fb9\u7f18\uff0c\u7b26\u5408\u9634\u5f71\u4e91\u5c42\u7684\u6548\u679c\uff1a<\/p>\n<pre>&lt;svg width=\"0\" height=\"0\" style=\"position:absolute;\"&gt;\r\n    &lt;filter id=\"cloudBasic\"&gt;\r\n      &lt;feTurbulence type=\"fractalNoise\" baseFrequency=\"0.015\" numOctaves=\"4\" \/&gt;     \r\n      &lt;feDisplacementMap in=\"SourceGraphic\" scale=\"170\" \/&gt;\r\n    &lt;\/filter&gt;\r\n    &lt;filter id=\"cloudShadow\"&gt;\r\n      &lt;feTurbulence type=\"fractalNoise\" baseFrequency=\"0.015\" numOctaves=\"2\" \/&gt;     \r\n      &lt;feDisplacementMap in=\"SourceGraphic\" scale=\"140\" \/&gt;\r\n    &lt;\/filter&gt;\r\n&lt;\/svg&gt;<\/pre>\n<p>\u773c\u89c1\u4e3a\u5b9e\uff0c\uff0c\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202010\/svg-filter-cloud-demo.php\" rel=\"noopener\" target=\"_blank\">\u5e26\u9634\u5f71\u7684\u767d\u4e91\u98d8\u98d8\u6548\u679cdemo<\/a><\/p>\n<p>\u70b9\u51fbdemo\u9875\u9762\u7684\u968f\u673a\u6309\u94ae\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u5404\u5f0f\u5404\u6837\u7684\u4e91\u6735\u6548\u679c\u5566\uff01<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_204009.png\" width=\"395\" height=\"295\" alt=\"\u968f\u673a\u4e91\u6735\u6309\u94ae\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u5982\u679c\u5b9e\u73b0\u968f\u673a\u6548\u679c\u7684\u5462\uff1f<\/p>\n<p>\u54c8\u54c8\uff0c\u6ca1\u9519\uff0c\u5c31\u662f\u901a\u8fc7\u968f\u673a<code>&lt;feTurbulence&gt;<\/code>\u5143\u7d20\u7684<code>seed<\/code>\u5c5e\u6027\u503c\u5b9e\u73b0\u7684\u3002<\/p>\n<h3>\u56db\u3001feDiffuseLighting\u6ee4\u955c\u5171\u540c\u5b9e\u73b0\u7684\u81ea\u7136\u6548\u679c<\/h3>\n<p>feDiffuseLighting\u6ee4\u955c\u662f\u5149\u6e90\u6ee4\u955c\uff0c\u53ef\u4ee5\u6a21\u62df\u81ea\u7136\u5149\u6548\u679c\uff0c\u8fd9\u4e2a\u6ee4\u955c\u4e4b\u540e\u6709\u673a\u4f1a\u518d\u505a\u8be6\u7ec6\u6df1\u5165\u7684\u4ecb\u7ecd\u3002<\/p>\n<p>\u8fd9\u91cc\u4e3e\u4e00\u4e2afeDiffuseLighting\u6ee4\u955c\u548cfeTurbulence\u6ee4\u955c\u5171\u540c\u5b9e\u73b0\u7684\u6c34\u6ef4\u6548\u679c\uff0c\u6b64\u6548\u679c\u539f\u51fa\u5904\u662f<a href=\"https:\/\/codepen.io\/raczo\/pen\/KKVbQmV?\" rel=\"noopener\" target=\"_blank\">\u8fd9\u4e2aCodePen<\/a>\u3002<\/p>\n<p>\u6548\u679c\u662f\u633a\u9177\u7684\uff08\u53c2\u89c1\u4e0b\u56fe\uff09\uff0c\u4f46\u662f\u7814\u7a76\u4e86\u4e0b\uff0c\u53d1\u73b0\u5e76\u4e0d\u5b9e\u7528\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_212447.jpg\" width=\"387\" height=\"470\" alt=\"\u6c34\u6ef4\u6548\u679c\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u56e0\u4e3a\u6ee4\u955c\u5728\u8fd9\u91cc\u6240\u5176\u7684\u4f5c\u7528\u5e76\u4e0d\u662f\u6c34\u6ef4\u6548\u679c\uff0c\u800c\u662f\u80cc\u540e\u7684\u6750\u8d28\u6548\u679c\u3002<\/p>\n<p>\u5b9e\u9645\u5f00\u53d1\uff0c\u6c34\u6ef4\u662f\u5e38\u7528\u7684\uff0c\u8fd9\u4e2a\u7eb8\u5f20\u3001\u6216\u8005\u5899\u58c1\u4e00\u6837\u7684\u6750\u8d28\u6548\u679c\u662f\u4e0d\u5e38\u7528\u7684\uff0c\u56e0\u6b64\uff0c\u8fd9\u4e2a\u4e0d\u5b9e\u7528\u6848\u4f8b\u6211\u5c31\u4e0d\u5177\u4f53\u5c55\u5f00\u7684\u4e86\uff0c\u76f8\u5173\u7684SVG\u6ee4\u955c\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>&lt;svg width=\"0\" height=\"0\"&gt;\r\n  &lt;filter id=\"water\"&gt;\r\n    &lt;feTurbulence type=\"fractalNoise\" baseFrequency='0.03 0.06' numOctaves=\"10\" result='noise' \/&gt;\r\n    &lt;feDiffuseLighting in='noise' lighting-color='#e2e1db' surfaceScale='4' result=\"texture\"&gt;\r\n      &lt;feDistantLight azimuth='45' elevation='35' \/&gt;\r\n    &lt;\/feDiffuseLighting&gt;\r\n    &lt;feComposite in=\"texture\" in2=\"SourceGraphic\" operator=\"in\" \/&gt;\r\n  &lt;\/filter&gt;\r\n&lt;\/svg&gt; <\/pre>\n<p>\u4f46\u662f\u8fd9\u4e2a\u6848\u4f8b\u7684\u6c34\u6ef4\u672c\u8eab\u6548\u679c\u5374\u662f\u6709\u7528\u7684\uff0c\u4e8e\u662f\uff0c\u53bb\u7c97\u53d6\u7cbe\uff0c\u4f7f\u7528\u7eafCSS\u6a21\u62df\u4e86\u4e0b\u6c34\u6ef4\u6548\u679c\uff0c\u5f97\u5230\u4e86\u5982\u4e0b\u56fe\u6240\u793a\u7684\u6548\u679c\u622a\u56fe\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/2020-10-17_221955.jpg\" width=\"424\" height=\"312\" alt=\"\u6c34\u73e0\u6548\u679c\u793a\u610f\" class=\"alignnone size-medium\" \/><\/p>\n<p>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/study\/202010\/svg-filter-water-rains-demo.php\" rel=\"noopener\" target=\"_blank\">CSS\u6c34\u73e0\u96e8\u6ef4\u6548\u679cdemo<\/a><\/p>\n<h3>\u4e94\u3001\u7ed3\u8bed<\/h3>\n<p>\u60f3\u8981\u5728web\u89c6\u89c9\u8868\u73b0\u9886\u57df\u6709\u6240\u5efa\u6811\uff0cSVG\u6ee4\u955c\u8fd8\u662f\u8fd8\u597d\u597d\u638c\u63e1\u7684\u3002<\/p>\n<p>\u4e4b\u540e\uff0c\u6211\u4e5f\u4f1a\u8fb9\u5b66\u4e60\uff0c\u8fb9\u6162\u6162\u66f4\u65b0\u5176\u4ed6SVG\u6ee4\u955c\u7684\u77e5\u8bc6\u70b9\u3002<\/p>\n<p>\u6700\u540e\u81ea\u5df1\u9ed8\u5ff5\u4e0b\uff1a\u706b\u7130\u548c\u6c34\u6d41\u662f\u6e4d\u6d41\uff0c\u70df\u96fe\u3001\u4e91\u6735\u3001\u78e8\u7802\u7b49\u6750\u8d28\u662f\u566a\u70b9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u5168\u90e8\u5185\u5bb9\uff0c\u5185\u5bb9\u8fd8\u633a\u591a\uff0c\u867d\u7136\u6807\u9898\u4e0d\u5438\u5f15\u4eba\uff0c\u4f46\u662f\u5185\u5bb9\u5374\u5f88\u5e72\u8d27\uff0c\u6b22\u8fce\u5206\u4eab\uff01<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/emtion\/emoji\/2764.svg\" width=\"20\" height=\"20\" align=\"absmiddle\"><\/p>\n<p>\u672c\u6587\u4e3a\u539f\u521b\u6587\u7ae0\uff0c\u6b22\u8fce\u5206\u4eab\uff0c\u52ff\u5168\u6587\u8f6c\u8f7d\uff0c\u5982\u679c\u5b9e\u5728\u559c\u6b22\uff0c\u53ef\u6536\u85cf\uff0c\u6c38\u4e0d\u8fc7\u671f\uff0c\u4e14\u4f1a\u53ca\u65f6\u66f4\u65b0\u77e5\u8bc6\u70b9\u53ca\u4fee\u6b63\u9519\u8bef\uff0c\u9605\u8bfb\u4f53\u9a8c\u4e5f\u66f4\u597d\u3002<br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"https:\/\/www.zhangxinxu.com\/wordpress\/?p=9502\">https:\/\/www.zhangxinxu.com\/wordpress\/?p=9502<\/a><\/p>\n<p>\uff08\u672c\u7bc7\u5b8c\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/image.zhangxinxu.com\/image\/blog\/202010\/fires-cover.jpg\" width=\"160\" height=\"106\" alt=\"feTurbulence\u6ee4\u955c\u4e0e\u706b\u7130\u6548\u679c\" class=\"alignright size-medium\" \/><\/p>\n<p>SVG feTurbulence\u6ee4\u955c\u53ef\u4ee5\u7528\u6765\u6a21\u62df\u8d85\u7ea7\u903c\u771f\u7684\u81ea\u7136\u7279\u6548\uff0c\u4f8b\u5982\u706b\u7130\u3001\u6c34\u6d41\u3001\u571f\u77f3\u3001\u70df\u96fe\u3001\u4e91\u6735\u7b49\u7b49\uff0c\u672c\u6587\u4ee5\u63a5\u8fd11\u4e07\u5b57\u7684\u7bc7\u5e45\u8be6\u7ec6\u6df1\u5165\u4ecb\u7ecd\u8fd9\u4e2aSVG\u6ee4\u955c\uff0c\u914d\u5907\u5927\u91cf\u7cbe\u5f69\u5b9e\u7528\u6848\u4f8b\uff0c\u89c6\u89c9\u8868\u73b0\u524d\u7aef\u5fc5\u5b66\u77e5\u8bc6\uff0c\u5e0c\u671b\u53ef\u4ee5\u5bf9\u60a8\u7684\u5b66\u4e60\u6240\u6709\u5e2e\u52a9\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[895],"tags":[1647,1203,1198,1678,1645,368,1646,642,1679,206,1250],"_links":{"self":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/9502"}],"collection":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/comments?post=9502"}],"version-history":[{"count":0,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/posts\/9502\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/media?parent=9502"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/categories?post=9502"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhangxinxu.com\/wordpress\/wp-json\/wp\/v2\/tags?post=9502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}