{"id":4197,"date":"2014-06-12T17:59:58","date_gmt":"2014-06-12T09:59:58","guid":{"rendered":"http:\/\/www.zhangxinxu.com\/wordpress\/?p=4197"},"modified":"2020-03-25T19:31:17","modified_gmt":"2020-03-25T11:31:17","slug":"deep-understand-svg-path-bezier-curves-command","status":"publish","type":"post","link":"https:\/\/www.zhangxinxu.com\/wordpress\/2014\/06\/deep-understand-svg-path-bezier-curves-command\/","title":{"rendered":"\u6df1\u5ea6\u638c\u63e1SVG\u8def\u5f84path\u7684\u8d1d\u585e\u5c14\u66f2\u7ebf\u6307\u4ee4"},"content":{"rendered":"<p>by <a href=\"http:\/\/www.zhangxinxu.com\/\">zhangxinxu<\/a> from <a href=\"http:\/\/www.zhangxinxu.com\/\">http:\/\/www.zhangxinxu.com<\/a><br \/>\n\u672c\u6587\u5730\u5740\uff1a<a href=\"http:\/\/www.zhangxinxu.com\/wordpress\/?p=4197\">http:\/\/www.zhangxinxu.com\/wordpress\/?p=4197<\/a><\/p>\n<p>\u65f6\u95f4\u7d27\u8feb\u7684\u5c0f\u4f19\u4f34\u53ef\u4ee5\u8df3\u8fc7\u7b2c\u4e00\u8282\u7684\u788e\u788e\u5ff5\uff0c\u4ece<a 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href=\"http:\/\/browser.qq.com\/mac\/\" target=\"_blank\">http:\/\/browser.qq.com\/mac\/<\/a>, \u4f7f\u7528Chrome\u7b49\u9ad8\u7ea7\u6d4f\u89c8\u5668\uff0c\u6548\u679c\u5f88\u8d5e\uff0c\u540c\u884c\u4eec\u90fd\u8d5e\u4e0d\u7edd\u53e3\uff01<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/2014-06-11_152107.png\" width=\"200\" height=\"132\" alt=\"QQ\u6d4f\u89c8\u5668for Mac\u622a\u56fe\u7f29\u7565\u56fe\" class=\"alignnone\" \/><\/p>\n<p>\u4e0d\u5c11\u4eba\u8c03\u4f83\uff0c\u8981\u662f\u6d4f\u89c8\u5668\u505a\u7684\u6709\u8fd9\u4e2a\u9875\u9762\u597d\u90a3\u5c31\u597d\u4e86\uff01 <img decoding=\"async\" src=\"\/\/mat1.gtimg.com\/www\/mb\/images\/face\/28.gif\" align=\"absmiddle\"><\/p>\n<p>\u54c8\uff0c\u5c0f\u9053\u6d88\u606f\uff0c\u6b64\u9875\u9762\u662f<strong>\u4ece\u754c\u9762\u8bbe\u8ba1\u5230\u6548\u679c\u5b9e\u73b0\u5b8c\u5168\u662f\u4e00\u4e2a\u4eba\u5b8c\u6210\u7684<\/strong>\uff0c\u4e00\u4e2a\u61c2CSS3\u7684\u8bbe\u8ba1\u5e08\u505a\u51fa\u6765\u7684\u4ea7\u54c1\u3002\u6211\u61c2\u6280\u672f\uff0c\u540c\u65f6\u53c8\u662f\u6211\u81ea\u5df1\u7684\u8bbe\u8ba1\uff0c\u6211\u81ea\u7136\u77e5\u9053\u8be5\u600e\u4e48\u8bbe\u8ba1\u624d\u80fd\u505a\u51fa\u6700\u7406\u60f3\u7684\u6548\u679c\uff0c\u81ea\u7136\u77e5\u9053\u600e\u6837\u7684\u6280\u672f\u53ef\u4ee5\u5b9e\u73b0\u6211\u60f3\u8981\u7684\u8bbe\u8ba1\u3002<\/p>\n<p>\u7136\u800c\uff0c\u7136\u800c\uff0c\u6ce8\u610f\uff0c\u6211\u8981\u8f6c\u6298\u4e86\u2026\u2026<\/p>\n<p>\u300cQQ\u6d4f\u89c8\u5668mac\u7248\u300d\u7684\u5ba3\u4f20\u9875\u7684\u6548\u679c\u867d\u597d\uff0c\u4f46\u662f\uff0c\u7ec6\u7ec6\u4e00\u67e5\u770b\uff0c\u4f1a\u53d1\u73b0\uff0c\u6240\u6709\u707f\u70c2\u7684\u6548\u679c\u5143\u7d20\uff0c\u5168\u90e8\u90fd\u662fpng24\u56fe\u7247\uff0c\u7136\u540eCSS3 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\/>\n<strong>\u4e07\u4eba\u4e0d\u4f1a\u7684\u6280\u80fd\uff1a<\/strong>\u5728web\u9886\u57df\uff0c\u6211\u89c9\u5f97\u6b64\u6280\u80fd\u4e3a\u4e24\u5757\uff1a\u4e00\u662f\u624e\u5b9e\u7684\u8bbe\u8ba1\u529f\u529b\uff0c\u4e8c\u662f\u6570\u5b66\u529f\u5e95\u4e0e\u903b\u8f91\u601d\u7ef4\u80fd\u529b\u3002\u4e8c\u8005\u5176\u4e00\u5373\u53ef\uff08\u517c\u5f97\u7684\u8ddf\u6211\u4eec\u4e0d\u662f\u4e00\u4e2a\u6863\u6b21\u7684\uff0c\u4e0d\u4e88\u8ba8\u8bba\uff09\u3002\u5c0f\u65f6\u5019\u7684\u718f\u9676\u3001\u7ed8\u753b\u57fa\u672c\u529f\u7ec3\u4e60\uff0c\u8bbe\u8ba1\u7406\u8bba\u7684\u5b66\u4e60\uff0c\u8fd9\u4e9b\u662f\u5f88\u96be\u88ab\u4e00\u822c\u4eba\u8d85\u8d8a\u7684\u3002\u6240\u4ee5\uff0c\u666e\u901a\u4eba\u60f3\u53bb\u8f6c\u884c\u505a\u8bbe\u8ba1\uff0c\u9664\u4e86\u4e00\u4e9b\u7f55\u89c1\u7684\u5177\u6709\u5929\u8d4b\u7684\u4eba\uff0c\u5f80\u5f80\u4f1a\u62ff\u6fc0\u60c5\u5f53\u624d\u80fd\uff0c\u6700\u540e\u82e6\u903c\u547d\uff01\u7b2c\u4e8c\u4e2a\uff0c\u5c31\u662f\u6570\u5b66\u529f\u5e95\u4e0e\u903b\u8f91\u601d\u7ef4\u80fd\u529b\u3002\u6070\u597d\uff0c\u4eca\u5929\u5fae\u535a\u4e0a\u770b\u5230\u4e86\u4e00\u5f20\u56fe\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/2014-06-11_123810.png\" width=\"553\" height=\"498\" alt=\"\u9ad8\u8003\u6570\u5b66\u5fd8\u5149\u5149\" class=\"alignnone\" \/><\/p>\n<p>\u867d\u7136\u6709\u73a9\u7b11\u6210\u5206\uff0c\u4f46\u4e0d\u53ef\u539a\u975e\uff0c\u5de5\u4f5c\u4e4b\u540e\u7684\u6570\u5b66\u529f\u529b\u662f\u4e2a\u5f88\u660e\u663e\u7684\u6280\u80fd\u4f18\u52bf\u3002\u6070\u597d\uff0c\u52a8\u753b\uff0cweb\u77e2\u91cf\u7ed8\u5236\u9700\u8981\u7528\u5230\u5927\u91cf\u7684\u6570\u5b66\u77e5\u8bc6\u3002\u4e8e\u662f\uff0c\u5927\u5bb6\u662f\u4e0d\u662f\u770b\u5230\u4e86\u4e00\u4e2a\u53ef\u4ee5\u8ddf\u5176\u4ed6\u82b8\u82b8\u533a\u5206\u7684\u65b9\u5411\uff1f\u81f3\u4e8e\u903b\u8f91\u601d\u7ef4\uff0c\u66f4\u591a\u6d89\u53caJavaScript\u4ee5\u53ca\u540e\u53f0\u5f00\u53d1\u7b49\u76f8\u5173\u77e5\u8bc6\uff0c\u5373\u8ba1\u7b97\u673a\u80cc\u666f\u4f18\u52bf\uff0c\u963f\u91cc\u7684\u524d\u7aef\u57fa\u672c\u4e0a\u90fd\u662f\u8fd9\u4e48\u4e00\u51fa\u3002<\/p>\n<p>\u4e8e\u662f\uff0c\u6211\u63d0\u70bc\u4e86\u4e0b\u53ef\u4ee5\u8131\u9896\u800c\u51fa\u7684\u6280\u80fd\u7ec4\u5408\uff1a<\/p>\n<table border=\"0\" cellspacing=\"1\" cellpadding=\"0\" class=\"params_table\">\n<tr>\n<th scope=\"col\">\u6280\u80fd<\/th>\n<th scope=\"col\">\u7a0b\u5ea6<\/th>\n<th scope=\"col\">\u5883\u51b5<\/th>\n<\/tr>\n<tr>\n<td>\u8bbe\u8ba1 | HTML\/CSS<\/td>\n<td>deep | good+<\/td>\n<td><img decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/dianfeng.jpg\" alt=\"\u5dc5\u5cf0\" height=\"76\"><\/td>\n<\/tr>\n<tr>\n<td>HTML\/CSS<\/td>\n<td>good<\/td>\n<td><img decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/yaofan.jpg\" alt=\"\u8981\u996d\" height=\"77\">&nbsp;<\/td>\n<\/tr>\n<tr>\n<td>HTML\/CSS<\/td>\n<td>deep<\/td>\n<td><img decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/banzhuan.jpg\" alt=\"\u642c\u7816\" height=\"78\"><\/td>\n<\/tr>\n<tr>\n<td>HTML\/CSS\/JS | \u6570\u5b66\u3001\u52a8\u753b\u3001\u56fe\u5f62<\/td>\n<td>deep | good+<\/td>\n<td><img decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/dianfeng.jpg\" alt=\"\u5dc5\u5cf0\" height=\"76\"><\/td>\n<\/tr>\n<tr>\n<td>HTML\/CSS\/JS | \u540e\u53f0\u8bed\u8a00\u3001\u670d\u52a1\u5668<\/td>\n<td>deep | good+<\/td>\n<td><img decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/dianfeng.jpg\" alt=\"\u5dc5\u5cf0\" height=\"76\"><\/td>\n<\/tr>\n<tr>\n<td>\u8bbe\u8ba1 | HTML\/CSS\/JS | \u6570\u5b66\u3001\u52a8\u753b\u3001\u56fe\u5f62 | \u540e\u53f0\u8bed\u8a00\u3001\u670d\u52a1\u5668<\/td>\n<td>good+ | deep | good+ | good+<\/td>\n<td><img decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/zhaobudaoduixiang.jpg\" alt=\"\u627e\u4e0d\u5230\u5bf9\u8c61\" height=\"106\"><\/td>\n<\/tr>\n<\/table>\n<p>\u6240\u4ee5\uff0c\u8981\u60f3\u524d\u7aef\u6709\u6240\u6210\uff0c\u6709\u4e24\u6761\u8def\uff0c\u4e00\u662f\u5f80\u524d\uff0cwebGL, canvas, SVG\u9886\u57df\uff0c\u8fd9\u9700\u8981\u5bf9\u56fe\u5f62\u654f\u611f\uff0c\u6709\u8bbe\u8ba1\u611f\uff0c\u6709\u52a8\u753b\u7d20\u517b\uff0c\u6709\u76f8\u5f53\u7684\u6570\u5b66\u77e5\u8bc6\uff0c\u4ee5\u53ca\u6700\u91cd\u8981\u7684JavaScript\u63a7\u5236\u80fd\u529b\uff1b\u4e00\u662f\u5f80\u540e\uff0c\u8d70\u5f00\u53d1\u8def\u7ebf\uff0c\u5de5\u5177\uff0c\u5bcc\u5e94\u7528\uff0c\u8fd0\u7ef4\uff08\u6570\u636e\u7edf\u8ba1\u3001\u524d\u7aef\u5b89\u5168\u3001\u524d\u7aef\u90e8\u7f72\uff09\u9886\u57df\uff0c\u8fd9\u9700\u8981\u61c2\u540e\u53f0\u3001\u8ba1\u7b97\u673a\u7f51\u7edc\u3001\u903b\u8f91\u601d\u8003\u80fd\u529b\uff0c\u4ee5\u53ca\u6700\u91cd\u8981\u7684JavaScript\u5f00\u53d1\u529f\u529b\u3002<\/p>\n<p>\u65e0\u8bba\u90a3\u6761\u8def\uff0cJavaScript\u7684\u638c\u63e1\u90fd\u662f\u57fa\u7840\u3001\u90fd\u662f\u4e2d\u67a2\u3002So, \u867d\u7136\u65b0\u6280\u672f\uff0c\u65b0\u65b9\u5411\u5f88\u8bf1\u4eba\uff0c\u4f46\u662f\uff0c\u5982\u679c\u57fa\u7840\u4e0d\u597d\uff0c\u8d70\u4e24\u6b65\u5c31\u4f1a\u6454\u5012\uff0c\u5403\u529b\u4e0d\u8ba8\u597d\u3002\u9759\u4e0b\u5fc3\u6765\uff0c\u597d\u597d\u624e\u5b9e\u524d\u7aef\u57fa\u7840\u518d\u8bf4\uff0c\u5e74\u8f7b\u5f53\u65f6\uff0c\u6b65\u5b50\u8de8\u5927\u4e86\uff0c\u5f53\u5fc3\u626f\u7740\u4f60\u672a\u6765\u8001\u5a46\u7684\u6700\u7231\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u65b9\u5411\u662f\u660e\u786e\u4e86\uff0c\u539f\u56e0\u4e5f\u77e5\u9053\u4e86\uff0c\u8be5\u5982\u4f55\u505a\u5462\uff1f<\/p>\n<p>\u8981\u60f3\u8fdb\u5165\u524d\u7aef\u56fe\u5f62\u9886\u57df\uff0c\u8eab\u4e3a\u52a8\u753b\u57fa\u7840\u3001\u8def\u5f84\u7ed8\u5236\u57fa\u7840\u7684\u8d1d\u585e\u5c14\u66f2\u7ebf\u90a3\u5fc5\u987b\u8981\u638c\u63e1\u900f\u5f7b\uff0c\u70c2\u719f\u4e8e\u5fc3\u554a\uff01\u53ef\u662f\uff0c\u53ef\u662f\u2026\u2026\u770b\u5230\u90a3\u6bd4\u68d2\u68d2\u7cd6\u8fd8\u957f\u7684\u6570\u5b66\u516c\u5f0f\u3001\u4e00\u5806\u8fd8\u7ed9\u8001\u5e08\u7684\u7b26\u53f7\uff0c\u6211\uff0c\u6211\u6015\u2026\u2026<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/bangbangtang.jpg\" width=\"250\" height=\"165\" alt=\"\u68d2\u68d2\u7cd6 \u5f20\u946b\u65ed-\u946b\u7a7a\u95f4-\u946b\u751f\u6d3b\" class=\"mt10\" \/><\/p>\n<p>\u6211\u5176\u5b9e\u4e5f\u5f88\u6015\uff0c\u4f46\u662f\u5462\uff0c\u8d1d\u585e\u5c14\u66f2\u7ebf\u6570\u5b66\u516c\u5f0f\u7684\u610f\u4e49\u5728\u4e8e\uff0c\u8ba9\u4f60\u77e5\u9053\uff0c\u8d1d\u585e\u5c14\u66f2\u7ebf\u662f\u5982\u4f55\u7ed8\u5236\u7684\uff0c\u5c5e\u4e8e\u66f4\u5e95\u4e00\u5c42\u7684\u5b66\u4e60\u3002\u6211\u4eec\u4e0d\u662f\u505aSVG\u7f16\u8f91\u5668\uff0c\u4e0d\u662f\u505a\u50cfPhotoshop\u90a3\u6837\u7684\u5de5\u5177\uff0c\u56e0\u6b64\uff0c\u6211\u4eec\u7684\u5b66\u4e60\u53ef\u4ee5\u518d\u5f80\u4e0a\u4e00\u5c42\uff0c\u5173\u5fc3\u8d1d\u585e\u5c14\u66f2\u7ebf\u6307\u4ee4\uff0c\u8ba9\u6d4f\u89c8\u5668\u53bb\u5e2e\u6211\u4eec\u7ed8\u5236\u6b64\u6307\u4ee4\u4e0b\u7684\u8d1d\u585e\u5c14\u66f2\u7ebf\u3002\u81f3\u4e8e\u516c\u5f0f\uff0c\u53ef\u4ee5\u5728\u6211\u4eec\u5bf9\u8d1d\u585e\u5c14\u66f2\u7ebf\u8db3\u591f\u719f\u6089\u4e4b\u540e\uff0c\u518d\u53bb\u6df1\u5165\uff0c\u90a3\u5c31\u662f\u53e6\u5916\u7684\u6587\u7ae0\u4e86\u3002<\/p>\n<h3 id=\"aimAnchor\">\u4e8c\u3001\u8d1d\u585e\u5c14\u66f2\u7ebf\u57fa\u672c\u6982\u8981<\/h3>\n<p>\u201c\u8d1d\u585e\u5c14\u66f2\u7ebf\u201d\u662f\u4ec0\u4e48\uff1f\u8fd9\u4e2a\u95ee\u9898\u5927\u53ef\u4e0d\u5fc5\u5173\u5fc3\uff0c\u53ea\u8981\u77e5\u9053\uff0c\u8fd9\u53ae\u53ef\u4ee5\u7ed8\u5236\u4efb\u4f55\u66f2\u7ebf\uff0c\u81ea\u7136\u5305\u62ec\u76f4\u7ebf\u3002<\/p>\n<p>\u8d1d\u585e\u5c14\u66f2\u7ebf\u4e0d\u592a\u597d\u638c\u63e1\u7684\u539f\u56e0\u4e4b\u4e00\u5c31\u662f\u5b83\u7684\u5144\u5f1f\u59d0\u59b9\u6709\u70b9\u591a\uff1a<strong>\u7ebf\u6027\u8d1d\u585e\u5c14\u66f2\u7ebf<\/strong>\u3001<strong>\u4e8c\u6b21\u65b9\u8d1d\u585e\u5c14\u66f2\u7ebf<\/strong>\u3001<strong>\u4e09\u6b21\u65b9\u8d1d\u585e\u5c14\u66f2\u7ebf<\/strong>\u3001<strong>\u56db\u6b21\u65b9\u8d1d\u585e\u5c14\u66f2\u7ebf<\/strong>\u3001<strong>\u4e94\u6b21\u65b9\u8d1d\u585e\u5c14\u66f2\u7ebf<\/strong>\u3001\u2026\u2026\u3002<\/p>\n<p>\u7ef4\u57fa\u767e\u79d1\u4e0a\u6709\u5f88\u8d5e\u4f46\u4e0d\u63a8\u8350\u7ec6\u770b\u7684Gif\u52a8\u753b\uff1a<br \/>\n<div style=\"width: 250px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/0\/00\/B%C3%A9zier_1_big.gif\/240px-B%C3%A9zier_1_big.gif\" width=\"240\" height=\"100\" alt=\"\u7ebf\u6027\u8d1d\u585e\u5c14\u66f2\u7ebf\u6f14\u793a\u52a8\u753b\uff0ct\u5728[0,1]\u533a\u95f4\" class \/><p class=\"wp-caption-text\">\u7ebf\u6027\u8d1d\u585e\u5c14\u66f2\u7ebf\u6f14\u793a\u52a8\u753b\uff0ct\u5728[0,1]\u533a\u95f4<\/p><\/div><\/p>\n<div style=\"width: 250px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/3\/3d\/B%C3%A9zier_2_big.gif\/240px-B%C3%A9zier_2_big.gif\" width=\"240\" height=\"100\" alt=\"\u4e8c\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u6f14\u793a\u52a8\u753b\uff0ct\u5728[0,1]\u533a\u95f4\" class \/><p class=\"wp-caption-text\">\u4e8c\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u6f14\u793a\u52a8\u753b\uff0ct\u5728[0,1]\u533a\u95f4<br \/><\/p><\/div>\n<div style=\"width: 250px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/d\/db\/B%C3%A9zier_3_big.gif\/240px-B%C3%A9zier_3_big.gif\" width=\"240\" height=\"100\" alt=\"\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u6f14\u793a\u52a8\u753b\uff0ct\u5728[0,1]\u533a\u95f4\" class \/><p class=\"wp-caption-text\">\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u6f14\u793a\u52a8\u753b\uff0ct\u5728[0,1]\u533a\u95f4<br \/><\/p><\/div>\n<div style=\"width: 250px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/a\/a4\/B%C3%A9zier_4_big.gif\/240px-B%C3%A9zier_4_big.gif\" width=\"240\" height=\"100\" alt=\"\u56db\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u6f14\u793a\u52a8\u753b\uff0ct\u5728[0,1]\u533a\u95f4\" class \/><p class=\"wp-caption-text\">\u56db\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u6f14\u793a\u52a8\u753b\uff0ct\u5728[0,1]\u533a\u95f4<br \/><\/p><\/div>\n<div style=\"width: 250px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/0\/0b\/BezierCurve.gif\/240px-BezierCurve.gif\" width=\"240\" height=\"192\" alt=\"\u4e94\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u6f14\u793a\u52a8\u753b\uff0ct\u5728[0,1]\u533a\u95f4\" class \/><p class=\"wp-caption-text\">\u4e94\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u6f14\u793a\u52a8\u753b\uff0ct\u5728[0,1]\u533a\u95f4<\/p><\/div>\n<p>\u4ee5\u4e0a\u52a8\u56fe\u90fd\u662f\u57fa\u4e8e\u6570\u5b66\u516c\u5f0f\uff0c\u76ee\u524d\u9636\u6bb5\u63a5\u89e6\u516c\u5f0f\u4e0d\u5229\u4e8e\u6211\u4eec\u7684\u5b66\u4e60\uff0c\u56e0\u6b64\uff0c\u5927\u5bb6\u611f\u53d7\u4e00\u4e0b\u5c31\u53ef\u4ee5\u4e86\u3002<img decoding=\"async\" src=\"\/\/mat1.gtimg.com\/www\/mb\/images\/face\/14.gif\" align=\"absmiddle\"><\/p>\n<h3>\u4e09\u3001SVG\u8d1d\u585e\u5c14\u66f2\u7ebf\u6307\u4ee4\u6982\u8981<\/h3>\n<p>Canvas, \u4ee5\u53caCSS3\u52a8\u753b\u51fd\u6570\u4e5f\u6709\u8d1d\u585e\u5c14\u66f2\u7ebf\u7684\uff0c\u4f46\u4ed6\u4eec\u7684<a href=\"\/\/www.zhangxinxu.com\/wordpress\/?p=3626\">\u7528\u6cd5\u5f62\u5f0f\u4e0a\u4e0eSVG\u662f\u4e0d\u540c\u7684<\/a>\uff08\u8bbf\u95ee\u8be5\u5730\u5740\u53ef\u5927\u81f4\u611f\u53d7\u5176\u5f02\u540c\uff09\u3002<\/p>\n<p>SVG\u4e2dpath\u7684\u5143\u7d20\uff0c\u4e5f\u5c31\u662f\u8def\u5f84\u7ed8\u5236\uff0c\u5c5e\u6027\u540d\u79f0\u662f<code>d<\/code>, \u5177\u4f53\u503c\u662f\u7531\u4e13\u95e8\u7684\u201c\u6307\u4ee4\u5b57\u6bcd+\u5750\u6807\u503c\u201d\u5b9e\u73b0\u7684\uff0c\u4f8b\u5982\u4e0b\u9762\u8fd9\u4e2a\u7b80\u5355\u4ee3\u7801\u793a\u610f\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;path d=\"M10 10L90 90\" stroke=\"#000000\" style=\"stroke-width: 5px;\">&lt;\/path><\/pre>\n<\/div>\n<p>\u6807\u51c6\u7684\u6307\u4ee4\u5b57\u6bcd\u662f10\u4e2a\uff0c\u5916\u52a01\u4e2a\u975e\u6807\u51c6\u7684\uff0c\u8fd9\u4e2a\u53ef\u4ee5\u53c2\u89c1\u6211\u7ffb\u8bd1\u6784\u5efa\u7684<a href=\"https:\/\/github.com\/zhangxinxu\/demo-Snap.svg\">Snap.svg\u9879\u76ee<\/a>\u4e2d<a href=\"\/\/www.zhangxinxu.com\/GitHub\/demo-Snap.svg\/demo\/basic\/Paper.path.php\">Paper.path()<\/a>\u9875\u9762\u4e2d\u7684\u8868\u683c\uff1a<\/p>\n<table cellspacing=\"1\" cellpadding=\"0\" class=\"params_table\">\n<thead>\n<tr>\n<th>\u547d\u4ee4<\/th>\n<th>\u540d\u79f0<\/th>\n<th>\u53c2\u6570<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>M<\/td>\n<td>moveto \u2003\u79fb\u52a8\u5230<\/td>\n<td>(x y)+<\/td>\n<\/tr>\n<tr>\n<td>Z<\/td>\n<td>closepath \u2003\u5173\u95ed\u8def\u5f84<\/td>\n<td>(none)<\/td>\n<\/tr>\n<tr>\n<td>L<\/td>\n<td>lineto \u2003\u753b\u7ebf\u5230<\/td>\n<td>(x y)+<\/td>\n<\/tr>\n<tr>\n<td>H<\/td>\n<td>horizontal lineto \u2003\u6c34\u5e73\u7ebf\u5230<\/td>\n<td>x+<\/td>\n<\/tr>\n<tr>\n<td>V<\/td>\n<td>vertical lineto \u2003\u5782\u76f4\u7ebf\u5230<\/td>\n<td>y+<\/td>\n<\/tr>\n<tr>\n<td>C<\/td>\n<td>curveto \u2003\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u5230<\/td>\n<td>(x1 y1 x2 y2 x y)+<\/td>\n<\/tr>\n<tr>\n<td>S<\/td>\n<td>smooth curveto \u2003\u5149\u6ed1\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u5230<\/td>\n<td>(x2 y2 x y)+<\/td>\n<\/tr>\n<tr>\n<td>Q<\/td>\n<td>quadratic B\u00e9zier curveto \u2003\u4e8c\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u5230<\/td>\n<td>(x1 y1 x y)+<\/td>\n<\/tr>\n<tr>\n<td>T<\/td>\n<td>smooth quadratic B\u00e9zier curveto \u2003\u5149\u6ed1\u4e8c\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u5230<\/td>\n<td>(x y)+<\/td>\n<\/tr>\n<tr>\n<td>A<\/td>\n<td>elliptical arc \u2003\u692d\u5706\u5f27<\/td>\n<td>(rx ry x-axis-rotation large-arc-flag sweep-flag x y)+<\/td>\n<\/tr>\n<tr>\n<td>R<\/td>\n<td><a href=\"http:\/\/en.wikipedia.org\/wiki\/Catmull\u2013Rom_spline#Catmull.E2.80.93Rom_spline\">Catmull-Rom curveto<\/a>* \u2003Catmull-Rom\u66f2\u7ebf<\/td>\n<td>x1 y1 (x y)+<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5176\u4e2d\uff0c<code>Catmull-Rom<\/code>\u66f2\u7ebf\u4e0d\u662f\u6807\u51c6\u7684SVG\u547d\u4ee4\uff0c\u6211\u4eec\u8fd9\u91cc\u4e0d\u4e88\u4ee5\u8ba8\u8bba!<\/p>\n<p>\u5982\u679c\u6307\u4ee4\u5b57\u6bcd\u662f\u5927\u5199\u7684\uff0c\u4f8b\u5982<code>M<\/code>, \u5219\u8868\u793a\u5750\u6807\u4f4d\u7f6e\u662f\u7edd\u5bf9\u4f4d\u7f6e\uff1b\u5982\u679c\u6307\u4ee4\u5b57\u6bcd\u5c0f\u5199\u7684\uff0c\u4f8b\u5982<code>m<\/code>, \u5219\u8868\u793a\u5750\u6807\u4f4d\u7f6e\u662f\u76f8\u5bf9\u4f4d\u7f6e\u3002<span class=\"s\">\/\/zxx: \u672c\u6587\u5168\u90e8\u4f7f\u7528\u5927\u5199\u5b57\u6bcd\u505a\u6f14\u793a\u548c\u8bf4\u660e\u3002<\/span><\/p>\n<p>\u5176\u4e2d\uff0c\u67095\u4e2a\u6307\u5b9a\u5c5e\u4e8e\u57fa\u672c\u6307\u4ee4\uff0c\u4f60\u4e5f\u53ef\u4ee5\u7406\u89e3\u4e3a\u201c\u597d\u7406\u89e3\u597d\u4e0a\u624b\u597d\u8bb0\u5fc6\u201d\u7684\u6307\u4ee4\uff0c\u89c1\u4e0b\u8868\uff1a<\/p>\n<table border=\"0\" cellspacing=\"1\" cellpadding=\"0\" class=\"params_table\">\n<tr>\n<th scope=\"col\">\u6307\u4ee4\u5b57\u6bcd\uff08\u7edd\u5bf9\u5750\u6807\uff09<\/th>\n<th scope=\"col\">\u4e2d\u6587\u542b\u4e49<\/th>\n<th scope=\"col\">\u53c2\u6570\u793a\u610f<\/th>\n<th scope=\"col\">\u5177\u4f53\u8bf4\u660e<\/th>\n<\/tr>\n<tr>\n<td>M<\/td>\n<td>\u79fb\u52a8\u5230(moveTo)<\/td>\n<td>x,y<\/td>\n<td>\u8def\u5f84\u8d77\u59cb\u70b9\u5750\u6807<\/td>\n<\/tr>\n<tr>\n<td>Z<\/td>\n<td>\u95ed\u5408\u8def\u5f84(closepath)<\/td>\n<td>&nbsp;<\/td>\n<td>\u5c06\u8def\u5f84\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u70b9\u7528\u76f4\u7ebf\u8fde\u63a5<\/td>\n<\/tr>\n<tr>\n<td>L<\/td>\n<td>\u76f4\u7ebf(lineTo)<\/td>\n<td>x,y<\/td>\n<td>\u5f53\u524d\u8282\u70b9\u5230\u6307\u5b9a(x,y)\u8282\u70b9\uff0c\u76f4\u7ebf\u8fde\u63a5<\/td>\n<\/tr>\n<tr>\n<td>H<\/td>\n<td>\u6c34\u5e73\u76f4\u7ebf<\/td>\n<td>x<\/td>\n<td>\u4fdd\u6301\u5f53\u524d\u70b9\u7684y\u5750\u6807\u4e0d\u53d8\uff0cx\u8f74\u79fb\u52a8\u5230x, \u5f62\u6210\u6c34\u5e73\u7ebf<\/td>\n<\/tr>\n<tr>\n<td>V<\/td>\n<td>\u5782\u76f4\u76f4\u7ebf<\/td>\n<td>y<\/td>\n<td>\u4fdd\u6301\u5f53\u524d\u70b9\u7684x\u5750\u6807\u4e0d\u53d8\uff0cy\u8f74\u79fb\u52a8\u5230y, \u5f62\u6210\u5782\u76f4\u7ebf<\/td>\n<\/tr>\n<\/table>\n<p>\u9664\u4e86\u8fd95\u4e2a\u53c2\u6570\u5c11\u3001\u76f4\u6765\u76f4\u5f80\u7684\u6307\u4ee4\uff0c\u5269\u4e0b\u7684\uff0c\u9664\u4e86\u5f27\u5f62\u547d\u4ee4A(Arcs)\uff0c\u5c31\u90fd\u662f\u4e0e\u8d1d\u585e\u5c14\u66f2\u7ebf\u76f8\u5173\u7684\u547d\u4ee4\u4e86\u3002<\/p>\n<p>\u5f27\u5f62\u547d\u4ee4A\u867d\u7136\u66f2\u7ebf\u66f4\u89c4\u5f8b\uff0c\u4f46\u5176\u7531\u4e8e\u4e0d\u786e\u5b9a\u6027\uff08\u6307\u5b9a\u692d\u5706\u957f\u534a\u5f84\u548c\u77ed\u534a\u5f84\uff0c\u4ee5\u53ca\u4e0a\u9762\u7684\u4e24\u4e2a\u70b9\u7684\u5706\u5f27\uff0c\u53ef\u4e0a\u534a\u5f27\u4e5f\u53ef\u4e0b\u534a\u5f27\uff09\uff0c\u56e0\u6b64\uff0c\u8fd8\u9700\u8981\u989d\u5916\u7684\u53c2\u6570\u4fdd\u8bc1\u5176\u5f27\u7ebf\u552f\u4e00\uff0c\u6240\u4ee5\u5176\u6bd4\u8d1d\u585e\u5c14\u66f2\u7ebf\u770b\u4e0a\u53bb\u8981\u590d\u6742\uff0c\u4e0d\u8fc7\u5927\u5bb6\u4e0d\u8981\u6015\uff0c\u8fd9\u91cc\u6211\u4eec\u4e0d\u8ddf\u4ed6\u6253\u4ea4\u9053\u3002<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/songqi.jpg\" width=\"126\" height=\"160\" alt=\"\u9001\u4e86\u4e00\u53e3\u6c14\" class=\"mt10\" \/><\/p>\n<p>\u5269\u4e0b\u76844\u4e2a\u6307\u4ee4\u5c31\u662f\u7ed8\u5236\u8d1d\u585e\u5c14\u66f2\u7ebf\u76f8\u5173\u7684\u4e86\u3002<\/p>\n<p>\u4ed6\u4eec\u5206\u522b\u662f\uff1aC\u5927\u4ed9\uff0cS\u5927\u4ed9\uff0cQ\u5927\u4ed9\uff0cT\u5927\u4ed9\u3002\u5408\u79f0\u201c\u5395\u6240\u5207\u56fe(CSQT)\u5927\u4ed9\u201d\u3002\u5176\u4e2d\uff0cC\u5927\u4ed9\uff0cS\u5927\u4ed9\u662f\u4e00\u4f19\u7684\uff0c\u4e00\u4e2a\u7ec4\u5408\uff0c\u4f60\u77e5\u9053\u53eb\u795e\u9a6c\u7ec4\u5408\u5417\uff1f\u300c\u5395\u6240\u5927\u4ed9\u7ec4\u5408\uff01\u300d\u54ce\u5440\uff0c\u8fd9\u4f4d\u89c2\u4f17\uff0c\u4f60\u597d\u751f\u4e86\u5f97\uff0c\u524d\u9014\u65e0\u91cf\uff0c\u7b54\u5f97\u592a\u5bf9\u4e86\uff0c\u5c31\u662f\u201c\u5395\u6240(CS)\u5927\u4ed9\u7ec4\u5408\u201d\uff1bQ\u5927\u4ed9\uff0cT\u5927\u4ed9\u662f\u53e6\u5916\u4e00\u4f19\u7684\uff0c\u4f60\u77e5\u9053\u2026\u2026\u300c\u5207\u56fe\u5927\u4ed9\u7ec4\u5408\uff01\u300d\u54ce\u5440\uff0c\u8fd9\u4f4d\u89c2\u4f17\uff0c\u770b\u6765\u5929\u7a7a\u624d\u662f\u4f60\u7684\u6781\u9650\uff0c\u4f60\u5df2\u7ecf\u5b66\u4f1a\u62a2\u7b54\u5566\uff01\u6ca1\u9519\uff0c\u5c31\u662f\u201c\u5207\u56fe(QT)\u5927\u4ed9\u7ec4\u5408\u201d\u3002<\/p>\n<p>\u90a3\u8fd9\u201c\u5395\u6240\u5927\u4ed9\u7ec4\u5408\u201d\u548c\u201c\u5207\u56fe\u5927\u4ed9\u7ec4\u5408\u201d\u662f\u600e\u4e48\u7ec4\u5408\u7684\u5462\uff1f\u5404\u81ea\u7684\u6a21\u6837\u3001\u8eab\u4e16\u53c8\u662f\u5982\u4f55\u7684\u5462\uff1f\u4e14\u542c\u4e0b\u56de\u5206\u89e3\u2026\u2026<\/p>\n<h3>\u56db\u3001\u201c\u5395\u6240\u5927\u4ed9\u7ec4\u5408\u201d\u548c\u201c\u5207\u56fe\u5927\u4ed9\u7ec4\u5408\u201d<\/h3>\n<p><strong>\u5395\u6240\u5927\u4ed9\u7ec4\u5408<\/strong><br \/>\n\u201c\u5395\u6240\u5927\u4ed9\u7ec4\u5408\u201d\u662f\u4e13\u95e8\u7ed8\u5236\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u7684\u3002\u5395\u6240\uff0c\u662f\u4e2a\u771f\u5b9e\u4e16\u754c\u7684\u7269\u4f53\uff0c\u662f\u4e09\u7ef4\u7684\uff0c\u56e0\u6b64\uff0c\u8ddf\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u7684\u201c\u4e09\u201d\u6b63\u597d\u5bf9\u5e94\u3002<\/p>\n<p>\u90a3\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u7684\u6837\u5b50\u662f\uff1f<\/p>\n<p>\u558f\uff0c\u8fd9\u91cc\u5404\u79cd\u5c3a\u5bf8\u676f\u7f69\u5f62\u72b6\u90fd\u662f\u201c\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u201d\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" width=\"226\" height=\"191\" alt=\"SVG\u4e0e\u8d1d\u585e\u5c14\u66f2\u7ebf\" class=\"alignnone\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201308\/svg-bezier.png\"><\/p>\n<p>\u8fd9\u79cd\u66f2\u7ebf\uff0c\u53ea\u7528\u5230\u4e86\u201c\u5395\u6240\u7ec4\u5408\u201d\u4e2d\u7684\u201c\u5395\u201d\uff0c\u4e5f\u5c31\u662f\u6307\u4ee4<code>C<\/code>.<\/p>\n<p>\u4e3a\u65b9\u4fbf\u6f14\u793a\u5177\u4f53\u53c2\u6570\uff0c\u6211\u5c31\u62ff\u4e0a\u56fe\u7b2c\u4e00\u4e2aA\u676f\u7f69\u7684\u653e\u5927\u4e3e\u4f8b\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/2014-06-12_101433.png\" width=\"633\" height=\"340\" alt=\"\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u7684\u63a7\u5236\u70b9\u7b49\u53c2\u6570\" class=\"alignnone\" \/><\/p>\n<p>\u4e0a\u56fe\uff0c\u662fAdobe Photoshop\u4e2d\u4f7f\u7528\u94a2\u7b14\u5de5\u5177\u65f6\u5019\u7684\u622a\u56fe\u518d\u52a0\u5de5\u3002\u6240\u8c13\u94a2\u7b14\u5de5\u5177\u62a0\u56fe\u5b9e\u9645\u4e0a\u5c31\u662f\u4e00\u4e2a\u4e00\u4e2a\u8d1d\u585e\u5c14\u66f2\u7ebf\u8fde\u63a5\u7684\u7ed3\u679c\uff0c\u5404\u7c7b\u56fe\u5f62\u7ed8\u5236\u8f6f\u4ef6\u7c7b\u4f3c\u5de5\u5177\u672c\u8d28\u4e0a\u90fd\u662f\u8d1d\u585e\u5c14\u66f2\u7ebf\u3002<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u770b\u5230\uff0c\u4e0a\u9762\u56fe\u7247\u67094\u4e2a\u70b9\u51fa\u73b0\uff0c\u66f2\u7ebf\u7684\u4e24\u4e2a\u7aef\u70b9\uff0c\u4ee5\u53ca\u4e24\u4e2a\u63a7\u5236\u70b9\uff0c\u8fd9\u5c31\u662f\u5178\u578b\u7684\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u3002<\/p>\n<p>\u676f\u7f69\u66f2\u7ebf\u662f\u6211\u4eec\u5b9e\u9645\u5b58\u5728\u7684\u8def\u5f84\uff08\u63cf\u8fb9\u5c31\u53ef\u89c1\uff09\uff0c\u800c\u4e24\u4e2a\u63a7\u5236\u70b9\u662f\u770b\u4e0d\u89c1\u7684\uff08\u865a\u7684\uff09\uff0c\u53ea\u662f\u7528\u6765\u786e\u5b9a\u66f2\u7ebf\u7684\u5f27\u5ea6\u7b49\u3002<\/p>\n<p>\u4e00\u822c\u800c\u8a00\uff0c\u201c\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u201d\u7684\u6307\u4ee4\u662f\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre> C x1 y1, x2 y2, x y <\/pre>\n<\/div>\n<p>\u8bb0\u4f4f\uff0c\u4e24\u4e2a\u63a7\u5236\u70b9\u5199\u5728\u524d\u9762\uff0c\u540e\u9762\u662f\u4e00\u4e2a\u5b9e\u70b9\u3002\u8ddf\u201c\u865a\u865a\u5b9e\u5b9e\u201d\u8fd9\u4e2a\u8bcd\u524d\u4e09\u4e2a\u5b57\u5bf9\u5e94\uff0c\u5c31\u5f88\u597d\u8bb0\u5fc6\u4e86\uff01\u5982\u679c\u4f7f\u7528\u76f8\u5750\u6807\u7f6e\u5219\u662f\uff08\u540e\u9762\u4e0d\u5c55\u793a\uff09\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>c dx1 dy1, dx2 dy2, dx dy<\/pre>\n<\/div>\n<p>\u4ee5\u4e0a\u5c31\u662fC\u5927\u4ed9\u57fa\u672c\u6a21\u6837\u4e86\uff01<\/p>\n<p>\u300c\u64e6\u5361\u9a6c\u5c3c\u4e9a\uff01\u660e\u660e\u56fe\u7247\u4e0a\u67094\u4e2a\u70b9\u554a\uff0c\u4f60\u8fd9\u91cc\u7684C\u6307\u4ee4\u600e\u4e48\u5c31\u53ea\u67093\u4e2a\u53c2\u6570\u554a\uff1f\u300d<br \/>\n\u300c\u54e6\uff0c\u8fd9\u4e2a\u554a\u3002\u5176\u4e2d\u6709\u4e00\u4e2a\u70b9\u662f\u8d77\u59cb\u70b9\uff0c\u4e00\u822c\u662f\u4f7f\u7528\u6307\u4ee4<code>Mx, y<\/code>\u7684\uff0c\u8fd9\u6837<code>1+3<\/code>\u5c31\u7b49\u4e8e<code>4<\/code>\u5566~\u300d<\/p>\n<p>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a class=\"a_link\" target=\"_blank\" href=\"\/\/www.zhangxinxu.com\/study\/201406\/svg-path-curve.html\">C\u5927\u4ed9\u6307\u4ee4\u4e0b\u5b9e\u73b0\u7684\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebfdemo<\/a><\/p>\n<p>\u6216\u8005\u76f4\u63a5\u5f80\u4e0b\u6d4f\u89c8-\u9017\u53f7\u533a\u5206\u7eb5\u6a2a\u8f74\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;svg id=\"svg\" width=\"200\" height=\"100\">\r\n    &lt;desc>\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf&lt;\/desc>&lt;defs>&lt;\/defs>\r\n    &lt;path d=\"M20,20 C90,40 130,40 180,20\" stroke=\"#000000\" fill=\"none\" style=\"stroke-width: 2px;\">&lt;\/path>\r\n    &lt;text x=\"90\" y=\"60\">A\u676f\u7f69&lt;\/text>\r\n&lt;\/svg><\/pre>\n<\/div>\n<p>\u6216\u8005\u9017\u53f7\u7528\u6765\u533a\u5206\u6bcf\u4e2a\u70b9\u5750\u6807\uff08\u4e3b\u6d41\u5199\u6cd5\uff09\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;svg id=\"svg\" width=\"200\" height=\"100\">\r\n    &lt;desc>\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf&lt;\/desc>&lt;defs>&lt;\/defs>\r\n    &lt;path d=\"M20 20 C90 40, 130 40, 180 20\" stroke=\"#000000\" fill=\"none\" style=\"stroke-width: 2px;\">&lt;\/path>\r\n    &lt;text x=\"90\" y=\"60\">A\u676f\u7f69&lt;\/text>\r\n&lt;\/svg><\/pre>\n<\/div>\n<p>\u6216\u8005\u4e0d\u9700\u8981\u9017\u53f7\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;svg id=\"svg\" width=\"200\" height=\"100\">\r\n    &lt;desc>\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf&lt;\/desc>&lt;defs>&lt;\/defs>\r\n    &lt;path d=\"M20 20 C90 40 130 40 180 20\" stroke=\"#000000\" fill=\"none\" style=\"stroke-width: 2px;\">&lt;\/path>\r\n    &lt;text x=\"90\" y=\"60\">A\u676f\u7f69&lt;\/text>\r\n&lt;\/svg><\/pre>\n<\/div>\n<p>\u6548\u679c(IE9+, &#8230;)\uff1a<br \/>\n<svg id=\"svg\" width=\"200\" height=\"100\"><desc>\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf<\/desc><defs><\/defs><path d=\"M20 20 C90,40 130,40 180,20\" stroke=\"#000000\" fill=\"none\" style=\"stroke-width: 2px;\"><\/path><text x=\"90\" y=\"60\">A\u676f\u7f69<\/text><\/svg><\/p>\n<p>\u90a3S\u5927\u4ed9\u5462\uff1f<\/p>\n<p>S\u5927\u4ed9\u548cC\u5927\u4ed9\u662f\u4e00\u5bf9\u7ec4\u5408\uff0c\u804c\u8d23\u4e4b\u4e00\u5c31\u7ed9C\u5927\u4ed9\u8865\u5200\u7528\u7684\u3002<\/p>\n<p><a href=\"https:\/\/developer.mozilla.org\/zh-CN\/docs\/Web\/SVG\/Tutorial\/Paths\">MDN<\/a>\u4e0a\u7684\u8fd9\u5f20\u56fe\u7684\u793a\u610f\u5f88\u8d5e\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/ShortCut_Cubic_Bezier.png\" width=\"190\" height=\"160\" alt=\"S\u6307\u4ee4\u8865\u5200\u793a\u610f\" class=\"mt10\" \/><\/p>\n<p>\u5927\u5bb6\u8981\u628a\u5173\u6ce8\u70b9\u653e\u5728\u84dd\u7ebf\u4e0a\u9762\u3002S\u6307\u4ee4\u4f1a\u81ea\u52a8\u8865\u51fa\u4e00\u4e2a\u5bf9\u79f0\u7684\u63a7\u5236\u70b9\uff08\u84dd\u7ebf\u90e8\u5206\uff09\u3002\u4e8e\u662f\uff0c\u5c31\u4f1a\u6709\u8fde\u7eed\u7684\u5e73\u6ed1\u66f2\u7ebf\u5566\uff01<\/p>\n<p>C\u6307\u4ee4\u6709\u4e09\u4e2a\u5750\u6807\u53c2\u6570\uff0c\u800cS\u6307\u4ee4\u81ea\u52a8\u5bf9\u79f0\u4e00\u4e2a\u63a7\u5236\u70b9\uff0c\u56e0\u6b64\uff0c\u8ddf\u5728C\u6307\u4ee4\u4e4b\u540e\u7684S\u6307\u4ee4\uff0c\u53ea\u9700\u89812\u4e2a\u53c2\u6570\u54e6\uff0c\u5982\u4e0b\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>S x2 y2, x y<\/pre>\n<\/div>\n<p>C\u6307\u4ee4+S\u6307\u4ee4\uff0c\u5c31\u662f\u201c\u5395\u6240\u5927\u4ed9\u7ec4\u5408\u201d\u5566\uff01<\/p>\n<p>\u4f46\u662f\u5462\uff0c\u53ea\u8981\u662f\u7ec4\u5408\uff0c\u5c31\u4f1a\u51fa\u73b0\u77db\u76fe\uff0c\u6bd4\u5982\u8bf4\u79d1\u6bd4\u548c\u5965\u5c3c\u5c14\uff0c\u8fde\u767d\u5a18\u5b50\u548c\u8bb8\u4ed9\u90fd\u6709\u4e0d\u4fe1\u4efb\u7684\u65f6\u5019\u3002\u6240\u4ee5\uff0cS\u5927\u4ed9\u524d\u9762\u7684\u642d\u6863\u53ef\u80fd\u4e0d\u662fC\u5927\u4ed9\uff0c\u800c\u662fS\u5927\u4ed9\uff0c\u6216\u8005\u66f4\u82e6\u903c\u7684\u5b64\u82e6\u4f36\u4ec3\u4e00\u4e2a\u4eba\u3002<\/p>\n<p>S\u5927\u4ed9\u751f\u6765\u8865\u5200\uff0c\u65e0\u79c1\uff0c\u53c8\u7b80\u5316\u53c2\u6570\uff0c\u5f88\u9ad8\u5927\u4e0a\uff0c\u4f46\u540c\u65f6\u53c8\u662f\u4e2a\u5f88\u6709\u4e2a\u6027\u7684\u4eba\u3002<\/p>\n<p>\u5982\u679c\u524d\u9762\u8ddf\u7740\u7684\u662f\u5176\u4ed6S\u5927\u4ed9\uff0c\u4e0a\u9635\u4e0d\u79bb\u5144\u5f1f\u5175\uff0c\u90a3\u5c31\u7ed9\u524d\u9762\u7684S\u5927\u4ed9\u8865\u5200\uff1b\u4f46\u662f\uff0c\u5982\u679c\u524d\u9762\u5373\u6ca1\u6709C\u5927\u4ed9\uff0c\u4e5f\u6ca1\u6709S\u5927\u4ed9\uff0c\u5b64\u82e6\u4f36\u4ec3\u4e00\u4e2a\u4eba\u88ab\u629b\u5f03\uff0c\u5219S\u5927\u4ed9\u5c31\u4f1a\u53db\u53d8\uff0c\u81ea\u964d\u4e00\u7ea7\uff0c\u4ece\u4e09\u6b21\u8d1d\u585e\u5c14\u5230\u4e8c\u6b21\u8d1d\u585e\u5c14\u7ec4\u5408\u9635\u8425\uff0c\u4e5f\u5c31\u662f\u201c\u5207\u56fe\u5927\u4ed9\u7ec4\u5408\u201d\uff0c\u5176\u8868\u73b0\u5c31\u8ddf\u4e8c\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u7684Q\u5927\u4ed9\u4e00\u6a21\u4e00\u6837\uff08\u4e24\u4e2a\u63a7\u5236\u70b9\u5408\u4e3a\u540c\u4e00\u4e2a\u70b9\uff09\uff0c\u4eff\u4f5b\u5728\u5ba3\u544a\uff1a\u300c\u8ba9\u4f60\u4eec\u65e0\u89c6\u6211\uff0c\u6211\u53bb\u8ddfQ\u5927\u4ed9\u6df7\uff01\u300d<\/p>\n<p>\u6240\u4ee5\uff0c\u4eb2\u4eec\uff0c\u4e0d\u8981\u8ba9S\u5927\u4ed9\u5b64\u82e6\u4f36\u4ec3\u4e00\u4e2a\u4eba\u54c8~\u5176\u4e0d\u80fd\u4e00\u4e2a\u4eba\u6218\u6597\uff0c\u4e00\u4e2a\u4eba\u6218\u6597\u65f6\u5019\u5c31\u53d8\u6210\u5176\u4ed6\u9635\u8425\u7684\u4e86\u3002<\/p>\n<p>\u60a8\u53ef\u4ee5\u72e0\u72e0\u5730\u70b9\u51fb\u8fd9\u91cc\uff1a<a class=\"a_link\" href=\"\/\/www.zhangxinxu.com\/study\/201406\/svg-path-smooth-curve.html\" target=\"_blank\">C\u5927\u4ed9+S\u5927\u4ed9\u6307\u4ee4\u4e0b\u7684\u4e09\u6b21\u5e73\u6ed1\u8d1d\u585e\u5c14\u66f2\u7ebfdemo<\/a><\/p>\n<p>\u76f8\u5173HTML\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;svg id=\"svg\" width=\"200\" height=\"100\">\r\n    &lt;desc>\u4e09\u6b21\u8d1d\u585e\u5c14\u5e73\u6ed1\u66f2\u7ebf&lt;\/desc>&lt;defs>&lt;\/defs>\r\n    &lt;path d=\"M20 20 C90 40 130 40 180 20 S250 60 280 20\" stroke=\"#000000\" fill=\"none\" style=\"stroke-width: 2px;\">&lt;\/path>\r\n    &lt;text x=\"90\" y=\"60\">A\u676f\u7f69&lt;\/text>\r\n    &lt;text x=\"230\" y=\"60\">\u8d58\u8089\u5c0f\u809a\u5b50&lt;\/text>\r\n&lt;\/svg><\/pre>\n<\/div>\n<p>\u73b0\u4ee3\u6d4f\u89c8\u5668\u4e0b\u6548\u679c\u5982\u4e0b\uff1a<br \/>\n<svg id=\"svg\" width=\"300\" height=\"100\"><desc>\u4e09\u6b21\u8d1d\u585e\u5c14\u5e73\u6ed1\u66f2\u7ebf<\/desc><defs><\/defs><path d=\"M20 20 C90 40 130 40 180 20 S250 60 280 20\" stroke=\"#000000\" fill=\"none\" style=\"stroke-width: 2px;\"><\/path><text x=\"90\" y=\"60\">A\u676f\u7f69<\/text><text x=\"230\" y=\"60\">\u8d58\u8089\u5c0f\u809a\u5b50<\/text><\/svg><\/p>\n<p><strong>\u5207\u56fe\u5927\u4ed9\u7ec4\u5408<\/strong><br \/>\n\u597d\u5de7\u554a\uff0c\u521a\u521a\u63d0\u5230\u4e86\u201c\u5207\u56fe(QT)\u5927\u4ed9\u7ec4\u5408\u201d\u4e2d\u7684\u201c\u5207(Q)\u5927\u4ed9\u201d\u3002\u5927\u5bb6\u90fd\u77e5\u9053\uff0c\u201c\u5207\u56fe\u201d\u662f\u4e2a\u4e8c\u7ef4\u5e73\u9762\u7684\u6d3b\uff0c\u56e0\u6b64\uff0c\u201c\u5207\u56fe\u5927\u4ed9\u7ec4\u5408\u201d\u662f\u7ed8\u5236\u4e8c\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u7684\u3002\u6b63\u597d\u533a\u522b\u4e8e\uff1a\u201c\u5395\u6240\u201d\u662f\u4e09\u7ef4\u7684\uff0c\u5bf9\u5e94\u7684\u662f\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u3002<\/p>\n<p>QT\u5927\u4ed9\u7ec4\u5408\u4e2d\u7684Q\u5927\u4ed9\u5bf9\u5e94CS\u7ec4\u5408\u4e2d\u7684C\u5927\u4ed9\uff0c\u4e3a\u4e8c\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u7684\u4e3b\u653b\u624b\u3002<\/p>\n<p>\u4e8c\u6b21\u6bd4\u4e09\u6b21\u5c11\u4e00\u6b21\uff0c\u81ea\u7136\u5c31\u8981\u66f4\u7b80\u5355\u70b9\u3002<\/p>\n<p>\u5178\u578b\u7684Q\u5927\u4ed9\u5bf9\u5e94\u7684\u4e8c\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u5982\u4e0b\u56fe\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/2014-06-12_161557.png\" width=\"304\" height=\"205\" alt=\"\u4e8c\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\" class=\"alignnone\" \/><\/p>\n<p>\u5bf9\u5e94\u7684\u6307\u4ee4\u548c\u53c2\u6570\u662f\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>Q x1 y1, x y<\/pre>\n<\/div>\n<p>\u53ef\u4ee5\u770b\u5230\uff0c\u8ddf\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u76f8\u6bd4\uff0c\u5c31\u662f2\u4e2a\u63a7\u5236\u70b9\u5408\u4e3a1\u4e2a\uff0c\u800c\u5b64\u96f6\u96f6\u7684S\u5927\u4ed9\u6307\u4ee4\u7531\u4e8e\u7f3a\u4e4f\u5bf9\u79f0\u63a7\u5236\u70b9\uff0c\u53ea\u80fd2\u4e2a\u63a7\u5236\u70b9\u5408\u4e3a1\u4e2a\uff0c\u4e8e\u662f\u770b\u4e0a\u53bb\u5c31\u662f\u53db\u9003\u5230\u4e86Q\u5927\u4ed9\u8fd9\u91cc\u3002<\/p>\n<p>\u4e0b\u9762\u8bf4\u8bf4T\u5927\u4ed9\uff0cT\u5927\u4ed9\u4e0eS\u5927\u4ed9\u662f\u4e00\u8def\u4eba\uff0c\u4e13\u95e8\u505a\u5e73\u6ed1\u8865\u5200\uff0c\u770bMDN\u4e0a\u793a\u610f\u56fe\uff0c\u84dd\u8272\u6807\u6ce8\u662f\u5173\u952e\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/Shortcut_Quadratic_Bezier.png\" width=\"190\" height=\"160\" alt=\"\u4e8c\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebfT\u6307\u4ee4\" class=\"mt10\" 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class=\"a_link\" href=\"\/\/www.zhangxinxu.com\/study\/201406\/svg-path-smooth-quadratic-curve.html\" target=\"_blank\">Q\u5927\u4ed9+T\u5927\u4ed9\u6307\u4ee4\u4e0b\u7684\u4e8c\u6b21\u5e73\u6ed1\u8d1d\u585e\u5c14\u66f2\u7ebfdemo<\/a><\/p>\n<p>\u65e0\u9017\u53f7\u7248HTML\u4ee3\u7801\u793a\u610f\uff1a<\/p>\n<div class=\"zxx_code\">\n<pre>&lt;svg id=\"svg\" width=\"300\" height=\"100\">\r\n    &lt;desc>\u4e8c\u6b21\u8d1d\u585e\u5c14\u5e73\u6ed1\u66f2\u7ebf&lt;\/desc>&lt;defs>&lt;\/defs>\r\n    &lt;path d=\"M20 10 Q140 40 180 20 T280 30\" stroke=\"#000000\" fill=\"none\" style=\"stroke-width: 2px;\">&lt;\/path>\r\n    &lt;text x=\"120\" y=\"60\">\u5c0f\u86ee\u8170&lt;\/text>\r\n    &lt;text x=\"200\" y=\"40\">\u5c0f\u7fd8\u81c0&lt;\/text>\r\n&lt;\/svg><\/pre>\n<\/div>\n<p>\u652f\u6301SVG\u6d4f\u89c8\u5668\u4e0b\u6548\u679c\uff1a<br \/>\n<svg id=\"svg\" width=\"300\" height=\"100\"><desc>\u4e8c\u6b21\u8d1d\u585e\u5c14\u5e73\u6ed1\u66f2\u7ebf<\/desc><defs><\/defs><path d=\"M20 10 Q140 40 180 20 T280 30\" stroke=\"#000000\" fill=\"none\" style=\"stroke-width: 2px;\"><\/path>\t\t\t\t\t<text x=\"120\" y=\"60\">\u5c0f\u86ee\u8170<\/text><text x=\"200\" y=\"40\">\u5c0f\u7fd8\u81c0<\/text><\/svg><\/p>\n<p><strong>\u56db\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u3001\u4e94\u6b21\u2026\u2026<\/strong><br \/>\n\u4e07\u53d8\u4e0d\u79bb\u5176\u5b97\uff0c\u5bf9\u4e8e\u56db\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u3001\u4e94\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u3001\u2026\u2026\uff0c\u6211\u4eec\u4f7f\u7528\u4e8c\u6b21\u8d1d\u585e\u5c14\u4e0e\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u7684\u5b8c\u7f8e\u7ec4\u5408\u5c31OK\u4e86\uff0c\u4e0d\u5fc5\u7ec6\u8ff0\u3002<\/p>\n<p><strong>\u8865\u5145\u4e8e2015-01-05<\/strong><br \/>\nDAYU\u505a\u4e86\u4e2a\u4efb\u610f\u4e8c\u6b21\u3001\u4e09\u6b21\u8d1d\u585e\u5c14\u66f2\u7ebf\u5448\u73b0\u5de5\u5177\uff0c\u6211\u89c9\u5f97\u633a\u5b9e\u7528\u7684\uff0c\u8fd9\u91cc\u5206\u4eab\u4e0b\uff1a<a href=\"http:\/\/dayu.pw\/svgcontrol\/\" target=\"_blank\">http:\/\/dayu.pw\/svgcontrol\/<\/a><\/p>\n<h3>\u4e94\u3001\u901a\u6653SVG\u8def\u5f84\u8d1d\u585e\u5c14\u66f2\u7ebf\u6307\u4ee4\u7684\u610f\u4e49\u662f\uff1f<\/h3>\n<p>\u8fd9\u662f\u4e2a\u5f88\u597d\u7684\u95ee\u9898\uff0c\u6211\u4eec\u4e3a\u4f55\u9700\u8981\u719f\u7ec3\u638c\u63e1SVG\u8def\u5f84\u8d1d\u585e\u5c14\u66f2\u7ebf\u6307\u4ee4\uff0c\u662f\u4e3a\u4e86\u7ed8\u56fe\uff1f<\/p>\n<p>\u6211\u4eec\u6709Adobe Illustrator, \u6709<a href=\"svg-edit.googlecode.com\/svn\/branches\/2.6\/editor\/svg-editor.html\">Google\u7684SVG\u7f16\u8f91\u5668<\/a>\uff0c\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u6240\u89c1\u5373\u6240\u5f97\u76f4\u63a5\u4f7f\u7528\u5de5\u5177\u7ed8\u5236\uff0c\u5c82\u4e0d\u6bd4\u4ee3\u7801\u6765\u5f97\u901f\u5ea6\uff1f<\/p>\n<p>\u8a00\u4e4b\u51ff\u51ff\uff0c\u5b9e\u9645\u4e0a\uff0c\u6211\u4eec\u638c\u63e1SVG\u8d1d\u585e\u5c14\u66f2\u7ebf\u6307\u4ee4\uff0c\u7ed8\u56fe\u662f\u5c0f\uff0c\u63a7\u5236\u7ed8\u56fe\u4e3a\u5927\uff01<\/p>\n<p>\u6211\u4eec\u5148\u770b\u4e0b\u9762\u8fd9\u4e2a\u53ef\u7231\u7684Gif\u8dd1\u6b65\u52a8\u753b\uff1a<br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/\/wx4.sinaimg.cn\/mw690\/4b4d632fgy1fs7f0qehwug20b408cjvd.gif\" width=\"400\" height=\"300\" alt=\"CSS3\u8dd1\u6b65\u52a8\u753b\" class=\"mt10\" onerror=\"this.src='\/\/image.zhangxinxu.com\/image\/blog\/201806\/242304148737852-s.gif';\" \/><\/p>\n<p>\u6b64\u56fe\u6765\u81ea\u817e\u8baf\u5fae\u4fe1\u56e2\u961f\u767d\u6811\u7684<a href=\"http:\/\/www.cnblogs.com\/PeunZhang\/p\/3685980.html\">\u79fb\u52a8web\u52a8\u753b\u8bbe\u8ba1\u7684\u4e00\u70b9\u5fc3\u5f97\u2014\u2014css3\u5b9e\u73b0\u8dd1\u6b65<\/a>\u4e00\u6587\uff0c\u77e2\u91cf\u98ce\u683c\u7684\u56fe\u7247\uff0c\u53ef\u7231\u7684Gif, \u8eab\u4e3a\u804c\u4e1a\u75c5\u7684\u6211\u4eec\u4e00\u5b9a\u4f1a\u7aa5\u89c6\u4e0b\u662f\u5982\u4f55\u5b9e\u73b0\u7684\uff0c\u559c\u6b22\u8fd9\u7c7bGif\u7684\u4f1a\u6c42\u6559\u7a0b\u3002<\/p>\n<p>\u5230\u5e95\u662f\u600e\u4e48\u5b9e\u73b0\u7684\u5462\uff1f\u6211\u4e0d\u6e05\u695a\u539f\u4f5c\u8005\u662f\u600e\u4e48\u5b9e\u73b0\u7684\uff0c\u4e0d\u8fc7\u767d\u6811\u7684\u5b9e\u73b0\u65b9\u5f0f\u4e00\u76ee\u4e86\u7136\uff0c\u591a\u4e2a\u56fe\u7247\u5e27+CSS3 \u52a8\u753b\u63a7\u5236<code>background-position<\/code>\u5b9e\u73b0\u7684\uff08\u4e0b\u9762\u4e24\u5f20\u4e3a\u622a\u56fe\uff09\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/2014-06-12_170922.png\" width=\"467\" height=\"423\" alt=\"\u4eba\u7269\u5954\u8dd1\u4e0eGif\u52a8\u753b\" class=\"alignnone\" \/><br \/>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/\/image.zhangxinxu.com\/image\/blog\/201406\/2014-06-12_171125.png\" width=\"458\" height=\"272\" alt=\"\u4ee3\u7801\u622a\u56fe\" class=\"alignnone\" \/><\/p>\n<p>\u8bf7\u5141\u8bb8\u6211\u201c\u5475\u5475\u201d\u4e00\u4e0b\uff0c\u4e0a\u9762\u7684\u5b9e\u73b0\u65b9\u6cd5\u5c5e\u4e8e\u8bbe\u8ba1\u5e08\u601d\u7ef4\u6a21\u5f0f\u65b9\u6cd5\uff08\u907f\u514d\u6570\u5b66\u4ee5\u53caJavaScript\uff09\uff0c\u6709\u51e0\u4e2a\u5927\u95ee\u9898\uff1a<\/p>\n<ol>\n<li><strong>\u6210\u672c\uff1a<\/strong>\u7ed8\u56fe\u662f\u4e2a\u5f88\u975e\u4eba\u529b\u7684\u6d3b\uff0c\u8fde\u767d\u6811\u90fd\u611f\u53f9\uff1a<br \/>\n<blockquote><p>\u7528PS\u6253\u5f00\u8be5\u5927\u5e08\u7684 GIF \u56fe\uff0c\u5728\u65f6\u95f4\u8f74\u7a97\u53e3\u4e2d\u6709 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