{"id":744,"date":"2025-04-10T12:00:09","date_gmt":"2025-04-10T04:00:09","guid":{"rendered":"https:\/\/www.wunen.com\/index.php\/2025\/04\/10\/%e5%89%8d%e7%ab%afpdf-%e9%98%85%e8%af%bb%e5%99%a8-3d%e7%89%88\/"},"modified":"2025-04-10T12:00:09","modified_gmt":"2025-04-10T04:00:09","slug":"%e5%89%8d%e7%ab%afpdf-%e9%98%85%e8%af%bb%e5%99%a8-3d%e7%89%88","status":"publish","type":"post","link":"http:\/\/www.wunen.com\/index.php\/2025\/04\/10\/%e5%89%8d%e7%ab%afpdf-%e9%98%85%e8%af%bb%e5%99%a8-3d%e7%89%88\/","title":{"rendered":"\u524d\u7aefpdf-\u9605\u8bfb\u5668-3d\u7248"},"content":{"rendered":"<div class=\"article_content clearfix\" id=\"article_content\">\n <link href=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/mdeditor\/css\/editerView\/kdoc_html_views-1a98987dfd.css\" rel=\"stylesheet\"\/>\n <link href=\"https:\/\/csdnimg.cn\/release\/blogv2\/dist\/mdeditor\/css\/editerView\/ck_htmledit_views-704d5b9767.css\" rel=\"stylesheet\"\/>\n<div class=\"htmledit_views\" id=\"content_views\">\n<p id=\"main-toc\">\n   <strong><br \/>\n    \u76ee\u5f55<br \/>\n   <\/strong>\n  <\/p>\n<p id=\"%C2%A0%E4%B8%80%E3%80%81%E5%9F%BA%E4%BA%8Epdf.js%E3%80%81turnjs4%E5%B0%81%E8%A3%85%E7%9A%843d%E7%BF%BB%E9%A1%B5%E6%95%88%E6%9E%9Cpdf%E6%96%87%E4%BB%B6%E9%98%85%E8%AF%BB%E5%99%A8%E3%80%81pdf%E6%96%87%E4%BB%B6url%E6%8B%BC%E6%8E%A5%E5%9C%B0%E5%9D%80%E6%A0%8F%E5%B0%B1%E5%8F%AF%E4%BB%A5%E5%B1%95%E7%A4%BA-toc\" style=\"margin-left:80px;\">\n   <a href=\"#%C2%A0%E4%B8%80%E3%80%81%E5%9F%BA%E4%BA%8Epdf.js%E3%80%81turnjs4%E5%B0%81%E8%A3%85%E7%9A%843d%E7%BF%BB%E9%A1%B5%E6%95%88%E6%9E%9Cpdf%E6%96%87%E4%BB%B6%E9%98%85%E8%AF%BB%E5%99%A8%E3%80%81pdf%E6%96%87%E4%BB%B6url%E6%8B%BC%E6%8E%A5%E5%9C%B0%E5%9D%80%E6%A0%8F%E5%B0%B1%E5%8F%AF%E4%BB%A5%E5%B1%95%E7%A4%BA\" rel=\"nofollow\"><br \/>\n    \u4e00\u3001\u57fa\u4e8epdf.js\u3001turnjs4\u5c01\u88c5\u76843d\u7ffb\u9875\u6548\u679cpdf\u6587\u4ef6\u9605\u8bfb\u5668\u3001pdf\u6587\u4ef6url\u62fc\u63a5\u5730\u5740\u680f\u5c31\u53ef\u4ee5\u5c55\u793a\u3001\u517c\u5bb9pc\u7aef\u3001H5\u7aef<br \/>\n   <\/a>\n  <\/p>\n<p id=\"%C2%A0%E4%BA%8C%E3%80%81%E6%95%88%E6%9E%9C%E5%B1%95%E7%A4%BA%E5%9B%BE-toc\" style=\"margin-left:80px;\">\n   <a href=\"#%C2%A0%E4%BA%8C%E3%80%81%E6%95%88%E6%9E%9C%E5%B1%95%E7%A4%BA%E5%9B%BE\" rel=\"nofollow\"><br \/>\n    \u4e8c\u3001\u6548\u679c\u5c55\u793a\u56fe<br \/>\n   <\/a>\n  <\/p>\n<p id=\"%C2%A0%E4%B8%89%E3%80%81%E9%83%A8%E5%88%86%E6%BA%90%E7%A0%81-toc\" style=\"margin-left:80px;\">\n   <a href=\"#%C2%A0%E4%B8%89%E3%80%81%E9%83%A8%E5%88%86%E6%BA%90%E7%A0%81\" rel=\"nofollow\"><br \/>\n    \u4e09\u3001\u90e8\u5206\u6e90\u7801<br \/>\n   <\/a>\n  <\/p>\n<p id=\"%E5%9B%9B%E3%80%81%E7%82%B9%E8%B5%9E%E6%94%B6%E8%97%8F%E7%A7%81%E4%BF%A1%E6%88%91%E5%8F%91%E6%BA%90%E7%A0%81-toc\" style=\"margin-left:80px;\">\n   <a href=\"#%E5%9B%9B%E3%80%81%E7%82%B9%E8%B5%9E%E6%94%B6%E8%97%8F%E7%A7%81%E4%BF%A1%E6%88%91%E5%8F%91%E6%BA%90%E7%A0%81\" rel=\"nofollow\"><br \/>\n    \u56db\u3001\u70b9\u8d5e\u5173\u6ce8\u52a0\u6536\u85cf\u79c1\u4fe1\u6211\u53d1\u6e90\u7801\uff08\u8bb0\u5f97\u79c1\u4fe1\u6211\u3001\u53d1\u90ae\u7bb1\u54c8\uff09<br \/>\n   <\/a>\n  <\/p>\n<hr id=\"hr-toc\"\/>\n<h4 id=\"%C2%A0%E4%B8%80%E3%80%81%E5%9F%BA%E4%BA%8Epdf.js%E3%80%81turnjs4%E5%B0%81%E8%A3%85%E7%9A%843d%E7%BF%BB%E9%A1%B5%E6%95%88%E6%9E%9Cpdf%E6%96%87%E4%BB%B6%E9%98%85%E8%AF%BB%E5%99%A8%E3%80%81pdf%E6%96%87%E4%BB%B6url%E6%8B%BC%E6%8E%A5%E5%9C%B0%E5%9D%80%E6%A0%8F%E5%B0%B1%E5%8F%AF%E4%BB%A5%E5%B1%95%E7%A4%BA\">\n   \u4e00\u3001\u57fa\u4e8epdf.js\u3001turnjs4\u5c01\u88c5\u76843d\u7ffb\u9875\u6548\u679cpdf\u6587\u4ef6\u9605\u8bfb\u5668\u3001pdf\u6587\u4ef6url\u62fc\u63a5\u5730\u5740\u680f\u5c31\u53ef\u4ee5\u5c55\u793a\u3001\u517c\u5bb9pc\u7aef\u3001H5\u7aef<br \/>\n  <\/h4>\n<h4 id=\"%C2%A0%E4%BA%8C%E3%80%81%E6%95%88%E6%9E%9C%E5%B1%95%E7%A4%BA%E5%9B%BE\">\n   \u4e8c\u3001\u6548\u679c\u5c55\u793a\u56fe<br \/>\n  <\/h4>\n<p style=\"text-align:center;\">\n<p style=\"text-align:center;\">\n<\/p>\n<h4 id=\"%C2%A0%E4%B8%89%E3%80%81%E9%83%A8%E5%88%86%E6%BA%90%E7%A0%81\">\n   \u4e09\u3001\u90e8\u5206\u6e90\u7801<br \/>\n  <\/h4>\n<p style=\"text-align:center;\">\n<\/p>\n<pre><code class=\"language-javascript\">&lt;script&gt;\n    \/*\u5b9a\u4e49\u53d8\u91cf\u53c2\u6570 *\/\n    \/\/ \u5b9a\u4e49\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32\u53d8\u91cf\u7528\u4e8e\u5b58\u50a8PDF\u6587\u4ef6\u7684URL\n    var pdfurl = \"\";\n    \/\/ \u83b7\u53d6flipbook\u5143\u7d20\uff0c\u8be5\u5143\u7d20\u5c06\u88ab\u7528\u6765\u5448\u73b0\u7ffb\u9875\u6548\u679c\n    var flipbook = $(\"#flipbook\");\n    \/\/ \u521d\u59cb\u5316\u5f53\u524d\u9875\u7801\u4e3a1\n    var pageCurrent = 0;\n    \/\/ \u8bbe\u7f6e\u4e66\u672cID\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8fdb\u884c\u66f4\u6539\n    var bid = 1;\n    \/\/ \u521d\u59cb\u5316\u7f29\u653e\u6bd4\u4f8b\u548c\u65cb\u8f6c\u89d2\u5ea6\u4e3a1\uff08\u5373\u4e0d\u7f29\u653e\u3001\u4e0d\u65cb\u8f6c\uff09\n    var scale = 1;\n    var rotate = 1;\n    \/\/ \u521d\u59cb\u5316\u753b\u5e03\u5bbd\u5ea6\u548c\u9ad8\u5ea6\u4e3a\u7a7a\u503c\uff0c\u5728\u540e\u7eed\u4ee3\u7801\u4e2d\u4f1a\u52a8\u6001\u8bbe\u7f6e\u8fd9\u4e9b\u503c\n    var canvasWidth = null;\n    var canvasHeight = null;\n\n    const getUrlParam = (name) =&gt; {\n      var reg = new RegExp(\"(^|&amp;)\" + name + \"=([^&amp;]*)(&amp;|$)\"); \/\/\u6784\u9020\u4e00\u4e2a\u542b\u6709\u76ee\u6807\u53c2\u6570\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u5bf9\u8c61\n      var r = window.location.search.substring(1).match(reg); \/\/\u5339\u914d\u76ee\u6807\u53c2\u6570\n      if (r != null) return decodeURI(r[2]);\n      return null; \/\/\u8fd4\u56de\u53c2\u6570\u503c\n    };\n\n    const isMobile = () =&gt; {\n      \/\/ \u68c0\u67e5\u7528\u6237\u4ee3\u7406\u662f\u5426\u5305\u542b\u201cMobi\u201d\u5b50\u5b57\u7b26\u4e32\n      return \/Mobi\/.test(navigator.userAgent);\n    };\n\n    const disableScroll = () =&gt; {\n      \/\/ \u83b7\u53d6\u5f53\u524d\u5782\u76f4\u6eda\u52a8\u4f4d\u7f6e\n      let scrollTop = window.pageYOffset || document.documentElement.scrollTop;\n      \/\/ \u7981\u7528\u9ed8\u8ba4\u7684\u7a97\u53e3\u6eda\u52a8\u884c\u4e3a\n      const preventDefault = (e) =&gt; {\n        e.preventDefault();\n      };\n      \/\/ \u5728\u89e6\u6478\u8bbe\u5907\u4e0a\uff0c\u7981\u7528touchmove\u4e8b\u4ef6\u6765\u9632\u6b62\u9875\u9762\u6ed1\u52a8\u3002\n      document.body.addEventListener(\"touchmove\", preventDefault, {\n        passive: false,\n      });\n      \/\/\u5728\u975e\u89e6\u6478\u8bbe\u5907\u4e0a\uff0c\u963b\u6b62\u7a97\u53e3\u6eda\u52a8\u4e8b\u4ef6\u5e76\u5c06\u5176\u66ff\u6362\u4e3apreventDefault\u51fd\u6570\u3002\n      window.addEventListener(\"scroll\", preventDefault);\n      \/\/ \u5c06body\u5143\u7d20\u7684\u6837\u5f0f\u8bbe\u7f6e\u4e3a\u56fa\u5b9a\uff0c\u5e76\u5c06\u5176\u4e0a\u4e00\u4e2a\u6eda\u52a8\u4f4d\u7f6e\u5e94\u7528\u4e8e\u5b83\u3002\n      document.body.style.position = \"fixed\";\n      document.body.style.top = -scrollTop + \"px\";\n    };\n\n    const preloadPdf = async (url) =&gt; {\n      const response = await fetch(url);\n      const arrayBuffer = await response.arrayBuffer();\n      return pdfjsLib.getDocument(arrayBuffer);\n    };\n\n    \/\/ \u5728\u9875\u9762\u52a0\u8f7d\u65f6\u5c31\u5f00\u59cb\u9884\u52a0\u8f7dPDF\u6587\u4ef6\n    window.addEventListener(\"load\", async () =&gt; {\n      if (getUrlParam(\"pdfurl\") != null) {\n        pdfurl = getUrlParam(\"pdfurl\");\n        getpdf(pdfurl);\n        var vConsole = new VConsole();\n        disableScroll();\n        console.log(pdfurl);\n      } else {\n        alert(\"\u6587\u4ef6\u4e3a\u7a7a\");\n      }\n    });\n\n    const getpdf = async (url) =&gt; {\n      const loadingTask = pdfjsLib.getDocument(url);\n      const pdf = await loadingTask.promise;\n      \/\/ \u83b7\u53d6\u7b2c\u4e00\u9875\u7684\u89c6\u56fe\uff0c\u5e76\u6839\u636e\u5176\u5bbd\u5ea6\u8bbe\u7f6e flipbook \u7684\u5bbd\u5ea6\n      const firstPage = await pdf.getPage(1);\n      const viewport = firstPage.getViewport({ scale: scale });\n      const mobieWidth = viewport.width * 2;\n      const pcWidth = viewport.width * 2;\n      const pdfWidth = isMobile() ? mobieWidth : pcWidth;\n      const canvasCache = {};\n      \/\/ \u4e00\u6b21\u6027\u83b7\u53d6\u6240\u6709\u9875\u9762\u7684canvas\u5bf9\u8c61\uff0c\u5e76\u5c06\u5176\u7f13\u5b58\u8d77\u6765\n      for (let i = 1; i &lt;= pdf.numPages; i++) {\n        const id = \"canvaspage\" + i;\n        const div = document.createElement(\"div\");\n        div.innerHTML = `&lt;canvas id=\"${id}\" class=\"page\"&gt;&lt;\/canvas&gt;`;\n        flipbook.append(div);\n        const page = await pdf.getPage(i);\n        const canvas = await setcanvas(page, id);\n        canvasCache[id] = canvas;\n      }\n      \/\/ \u52a0\u8f7dturn.js\u5e76\u8bbe\u7f6e\u53c2\u6570\n      await new Promise((resolve) =&gt; {\n        yepnope({\n          test: Modernizr.csstransforms,\n          yep: [\".\/JS\/turnjs4\/lib\/turn.js\"],\n          complete: () =&gt; {\n            $(\"#flipbook\").turn({\n              width: pdfWidth,\n              height: viewport.height,\n              elevation: 50,\n              display: isMobile() ? \"single\" : \"double\",\n              autoCenter: true,\n              duration: 1000,\n              gradients: true,\n              disable: true,\n              \/\/ \u6dfb\u52a0turn.js\u7684turned\u4e8b\u4ef6\u56de\u8c03\u51fd\u6570\uff0c\u7528\u4e8e\u9884\u52a0\u8f7d\u76f8\u90bb\u9875\u9762\n              \/\/ \u9884\u52a0\u8f7d\u76f8\u90bb\u9875\u9762\u7684\u6570\u91cf\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8c03\u6574\n              turned: async function (event, page = 1) {\n                console.log(event, page, \"33333333333333\");\n                const prevPage = page - 1;\n                const nextPage = page + 1;\n                \/\/ \u9884\u52a0\u8f7d\u5f53\u524d\u9875\u9762\u7684\u76f8\u90bb\u9875\u9762\n                if (prevPage &gt; 0 &amp;&amp; !canvasCache[prevPage]) {\n                  const id = \"canvaspage\" + prevPage;\n                  const div = document.createElement(\"div\");\n                  div.innerHTML = `&lt;canvas id=\"${id}\" class=\"page\"&gt;&lt;\/canvas&gt;`;\n                  flipbook.append(div);\n                  const page = await pdf.getPage(prevPage);\n                  const canvas = await setcanvas(page, id);\n                  canvasCache[prevPage] = canvas;\n                }\n                if (nextPage &lt;= pdf.numPages &amp;&amp; !canvasCache[nextPage]) {\n                  const id = \"canvaspage\" + nextPage;\n                  const div = document.createElement(\"div\");\n                  div.innerHTML = `&lt;canvas id=\"${id}\" class=\"page\"&gt;&lt;\/canvas&gt;`;\n                  flipbook.append(div);\n                  const page = await pdf.getPage(nextPage);\n                  const canvas = await setcanvas(page, id);\n                  canvasCache[nextPage] = canvas;\n                }\n                \/\/ \u79fb\u9664\u672a\u7f13\u5b58\u7684\u65e7\u9875\u9762\n                const unloadPage = isMobile() ? page + 2 : page + 4;\n                const unloadPage2 = isMobile() ? page - 2 : page - 4;\n                if (canvasCache[unloadPage]) {\n                  const canvas = canvasCache[unloadPage];\n                  delete canvasCache[unloadPage];\n                  canvas.parentNode.remove();\n                }\n                if (canvasCache[unloadPage2]) {\n                  const canvas = canvasCache[unloadPage2];\n                  delete canvasCache[unloadPage2];\n                  canvas.parentNode.remove();\n                }\n              },\n            });\n            resolve();\n          },\n        });\n      });\n\n      \/\/ \u9884\u52a0\u8f7d\u6240\u6709canvas\u5bf9\u8c61\u7684\u56fe\u50cf\u6570\u636e\n      Object.values(canvasCache).forEach((canvas) =&gt; {\n        const context = canvas.getContext(\"2d\");\n        const imageData = context.getImageData(\n          0,\n          0,\n          canvas.width,\n          canvas.height\n        );\n      });\n      \/\/ \u4f7f\u7528pdf.js\u5e93\u89e3\u6790PDF\u6587\u6863\u5e76\u8fd4\u56dePromise\u5bf9\u8c61\uff0c\u5728\u89e3\u6790\u5b8c\u6210\u540e\u9690\u85cf\u906e\u7f69\u5c42\u3002\n      const response = await fetch(url);\n      const arrayBuffer = await response.arrayBuffer();\n      const pdfData = new Uint8Array(arrayBuffer);\n      await pdfjsLib.getDocument(pdfData).promise;\n      $(\"#overlay\").hide();\n    };\n\n    const canvasCache = {};\n\n    const setcanvas = async (page, id) =&gt; {\n      const canvas = document.getElementById(id);\n      const canvasRect = canvas.getBoundingClientRect();\n      const isVisible =\n        canvasRect.bottom &gt; 0 &amp;&amp;\n        canvasRect.top &lt; window.innerHeight &amp;&amp;\n        canvasRect.right &gt; 0 &amp;&amp;\n        canvasRect.left &lt; window.innerWidth;\n      if (isVisible) {\n        \/\/ \u5982\u679c canvas \u53ef\u89c1\uff0c\u5219\u5c06\u5176\u6dfb\u52a0\u5230\u7f13\u5b58\u4e2d\n        canvasCache[id] = canvas;\n      } else {\n        \/\/ \u5982\u679c canvas \u4e0d\u53ef\u89c1\uff0c\u5219\u4ece\u7f13\u5b58\u4e2d\u5220\u9664\u5b83\n        delete canvasCache[id];\n      }\n      if (!canvas) {\n        console.log(\"Canvas element with ID \" + id + \" not found.\");\n        return;\n      }\n      const context = canvas.getContext(\"2d\");\n      if (!context) {\n        console.log(\"Could not get 2D context for canvas element.\");\n        return;\n      }\n      const viewport = page.getViewport({ scale: scale });\n      const screenWidth = Math.min(window.innerWidth, 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