{"id":28183,"date":"2024-11-24T12:59:13","date_gmt":"2024-11-24T04:59:13","guid":{"rendered":"https:\/\/fwq.ai\/blog\/28183\/"},"modified":"2024-11-24T12:59:13","modified_gmt":"2024-11-24T04:59:13","slug":"%e5%a6%82%e4%bd%95%e5%88%a9%e7%94%a8-canvas-api-%e5%bc%af%e6%9b%b2%e6%8b%89%e4%bc%b8%e5%9b%be%e7%89%87%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/28183\/","title":{"rendered":"\u5982\u4f55\u5229\u7528 Canvas API \u5f2f\u66f2\u62c9\u4f38\u56fe\u7247\uff1f"},"content":{"rendered":"

\"\u5982\u4f55\u5229\u7528<\/p>\n

\u5229\u7528 canvas api \u5f2f\u66f2\u62c9\u4f38\u56fe\u7247<\/strong><\/p>\n

\u5982\u4f55\u5229\u7528 HTML \u548c CSS \u5448\u73b0\u4e0a\u9762\u6240\u793a\u7684\u6548\u679c\uff1f<\/p>\n

HTML \u548c CSS \u5b9e\u73b0<\/strong><\/p>\n

\u6b64\u6548\u679c\u4e0d\u6613\u7528\u7eaf\u7cb9\u7684 HTML \u548c CSS \u5b9e\u73b0\u3002CSS3 \u4e2d\u7684 transform \u5c5e\u6027\u867d\u53ef\u7528\u4e8e\u65cb\u8f6c\u5143\u7d20\uff0c\u4f46\u65e0\u6cd5\u5b9e\u73b0\u4e1d\u6ed1\u7684\u5f2f\u66f2\u6548\u679c\uff0c\u4e14\u65e0\u6cd5\u5904\u7406\u4e2d\u95f4\u884c\u3002<\/p>\n

Canvas API \u5b9e\u73b0<\/strong><\/p>\n

\u4f7f\u7528 Canvas API \u4e2d\u5904\u7406\u56fe\u50cf\u50cf\u7d20\u7684\u65b9\u6cd5\u6765\u63a7\u5236\u56fe\u7247\u50cf\u7d20\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5f2f\u66f2\u62c9\u4f38\u6548\u679c\u3002\u4ee5\u4e0b\u4ee3\u7801\u7247\u6bb5\u6f14\u793a\u4e86\u57fa\u672c\u6982\u5ff5\uff1a<\/p>\n

const canvas = document.getElementById('canvas');\nconst ctx = canvas.getContext('2d');\nconst image = document.getElementById('image');\n\n\/\/ \u52a0\u8f7d\u56fe\u50cf\u5e76\u5c06\u5176\u7ed8\u5236\u5230\u753b\u5e03\nctx.drawImage(image, 0, 0);\n\n\/\/ \u83b7\u53d6\u56fe\u50cf\u6570\u636e\nconst imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);\n\n\/\/ \u4fee\u6539\u56fe\u50cf\u50cf\u7d20\u989c\u8272\u4ee5\u6cbf\u7740\u66f2\u7ebf\u5f2f\u66f2\nfor (let i = 0; i < imageData.data.length; i += 4) {\n  \/\/ \u8ba1\u7b97\u50cf\u7d20\u7684\u504f\u79fb\u91cf\uff0c\u4ea7\u751f\u5f2f\u66f2\u6548\u679c\n  const offset = Math.sin(i \/ 100) * 10;\n  \n  \/\/ \u4fee\u6539\u50cf\u7d20\u7684\u989c\u8272\n  imageData.data[i] += offset;\n  imageData.data[i + 1] += offset;\n  imageData.data[i + 2] += offset;\n}\n\n\/\/ \u5c06\u4fee\u6539\u540e\u7684\u56fe\u50cf\u6570\u636e\u653e\u56de\u753b\u5e03\nctx.putImageData(imageData, 0, 0);<\/pre>\n
  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u5229\u7528 Canvas API \u5f2f\u66f2\u62c9\u4f38\u56fe\u7247\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5229\u7528 canvas api \u5f2f\u66f2\u62c9\u4f38\u56fe\u7247 \u5982\u4f55\u5229\u7528 HTML \u548c CSS \u5448\u73b0\u4e0a\u9762\u6240\u793a\u7684\u6548\u679c\uff1f HTML \u548c CSS \u5b9e\u73b0 \u6b64\u6548\u679c\u4e0d\u6613\u7528\u7eaf\u7cb9\u7684 HTML \u548c CSS \u5b9e\u73b0\u3002CSS3 \u4e2d\u7684 transform \u5c5e\u6027\u867d\u53ef\u7528\u4e8e\u65cb\u8f6c\u5143\u7d20\uff0c\u4f46\u65e0\u6cd5\u5b9e\u73b0\u4e1d\u6ed1\u7684\u5f2f\u66f2\u6548\u679c\uff0c\u4e14\u65e0\u6cd5\u5904\u7406\u4e2d\u95f4\u884c\u3002 Canvas API \u5b9e\u73b0 \u4f7f\u7528 Canvas API \u4e2d\u5904\u7406\u56fe\u50cf\u50cf\u7d20\u7684\u65b9\u6cd5\u6765\u63a7\u5236\u56fe\u7247\u50cf\u7d20\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5f2f\u66f2\u62c9\u4f38\u6548\u679c\u3002\u4ee5\u4e0b\u4ee3\u7801\u7247\u6bb5\u6f14\u793a\u4e86\u57fa\u672c\u6982\u5ff5\uff1a const canvas = document.getElementById(‘canvas’); const ctx = canvas.getContext(‘2d’); const image = document.getElementById(‘image’); \/\/ \u52a0\u8f7d\u56fe\u50cf\u5e76\u5c06\u5176\u7ed8\u5236\u5230\u753b\u5e03 ctx.drawImage(image, 0, 0); \/\/ \u83b7\u53d6\u56fe\u50cf\u6570\u636e const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height); \/\/ […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-28183","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/28183","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=28183"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/28183\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=28183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=28183"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=28183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}