gsap.timeline({\n onUpdate: () => {\n const xml = new XMLSerializer().serializeToString(svg);\n const src = `data:image\/svg+xml;base64,${btoa(xml)}`;\n animationFrames.push(src);\n },\n onComplete: () => {\n let inc = 0;\n const renderSvgDataToCanvas = () => {\n const virtualImage = new Image();\n virtualImage.src = animationFrames[inc];\n virtualImage.onload = () => {\n ctx.clearRect(0, 0, 400, 200);\n ctx.drawImage(virtualImage, 0, 0, 400, 200);\n canvasFrames.push(canvas.toDataURL('image\/jpeg'));\n inc++;\n if (inc < animationFrames.length) {\n renderSvgDataToCanvas();\n } else {\n \/\/console.log(canvasFrames); \/\/調(diào)試用\n generateGif();\n }\n };\n };\n renderSvgDataToCanvas();\n },\n})\n.fromTo('#rect', { x: -50 }, { duration: 2, x: 350, ease: 'power.ease2' });<\/pre>\n此步驟稍微複雜一些，需要對(duì) animationFrames 數(shù)組的每個(gè)索引執(zhí)行一個(gè)操作。 <\/p>\n
通過使用遞歸函數(shù) renderSvgDataToCanvas，我可以使用 animationFrames 數(shù)組中的圖像數(shù)據(jù)，將其寫入畫布。然後，通過使用 canvas.toDataURL('image\/jpeg')，我可以將動(dòng)畫每一幀的光柵化數(shù)據(jù)存儲(chǔ)在 canvasFrames 數(shù)組中。 <\/p>\n
如果已在 onComplete 函數(shù)中添加 console.log，則應(yīng)在瀏覽器控制臺(tái)中看到類似於以下內(nèi)容。但是，這次請(qǐng)注意數(shù)據(jù)的 MIME 類型：它不是 svg xml，而是 image\/jpeg。這對(duì)於我接下來要做的工作很重要。 <\/p>\n
![\"How](\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/173898187413228.jpg\")
<\/p>
將光柵化數(shù)據(jù)轉(zhuǎn)換為 GIF<\/h2>\n
這是最後一步，它涉及將 canvasFrames 數(shù)組的每個(gè)索引傳遞到 modern-gif。 <\/p>\n
\n\n\n \n Simple<\/title>\n<\/head>\n<body>
<h1><a href="http://www.miracleart.cn/">国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂</a></h1>\n <main>\n <svg id='svg'\n xmlns='http:\/\/www.w3.org\/2000\/svg'\n viewBox='0 0 400 200'\n width={400}\n height={200}\n style={{ border: '1px solid red' }}\n >\n <rect id='rect' x='0' y='75' width='50' height='50' fill='red'><\/rect>\n <\/svg>\n <canvas id='canvas' style={{ border: '1px solid blue' }} width={400} height={200}><\/canvas>\n <img src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/173898187373194.jpg\" alt=\"How to Create Animated GIFs from GSAP Animations \" \/><\/p>\n<h2>將 SVG 數(shù)據(jù)轉(zhuǎn)換為光柵化數(shù)據(jù)<\/h2>\n<pre><code class=\"language-javascript\">gsap.timeline({\n onUpdate: () => {\n const xml = new XMLSerializer().serializeToString(svg);\n const src = `data:image\/svg+xml;base64,${btoa(xml)}`;\n animationFrames.push(src);\n },\n onComplete: () => {\n let inc = 0;\n const renderSvgDataToCanvas = () => {\n const virtualImage = new Image();\n virtualImage.src = animationFrames[inc];\n virtualImage.onload = () => {\n ctx.clearRect(0, 0, 400, 200);\n ctx.drawImage(virtualImage, 0, 0, 400, 200);\n canvasFrames.push(canvas.toDataURL('image\/jpeg'));\n inc++;\n if (inc < animationFrames.length) {\n renderSvgDataToCanvas();\n } else {\n \/\/console.log(canvasFrames); \/\/調(diào)試用\n generateGif();\n }\n };\n };\n renderSvgDataToCanvas();\n },\n})\n.fromTo('#rect', { x: -50 }, { duration: 2, x: 350, ease: 'power.ease2' });<\/pre>\n<p>使用 modernGif.encode，您可以將數(shù)據(jù)數(shù)組傳遞到 frames 並為每一幀定義延遲，我選擇添加 0 秒的延遲。 <\/p>\n<p>代碼的下一部分處理轉(zhuǎn)換 modernGif.ecode 數(shù)據(jù)並將其轉(zhuǎn)換為“另一個(gè)”MIME 類型，這次是 image\/gif。 <\/p>\n<p>一旦我有了表示動(dòng)畫 GIF 的最終“blob”數(shù)據(jù)，我就將其轉(zhuǎn)換為 URL，然後設(shè)置 image 和 link 元素的 src 和 href，以便我可以在瀏覽器中查看和下載 GIF。 <\/p>\n<p><img src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/000\/173898187673605.jpg\" alt=\"How to Create Animated GIFs from GSAP Animations \"><\/p>\n<h2>幀速率<\/h2>\n<p>您可能會(huì)注意到最終的GIF 運(yùn)行速度相當(dāng)慢，這是因?yàn)樵跒g覽器中運(yùn)行的動(dòng)畫通常每秒播放60 幀(fps)，而GIF 的幀速率通常要慢得多，為12 或24 fps。 <\/p>\n<p>為了“丟棄”一些動(dòng)畫幀，我使用數(shù)組過濾器和 JavaScript 餘數(shù)運(yùn)算符來確定索引是否可以被某個(gè)數(shù)字整除，在我的例子中，我選擇 6。不能被 6 整除的索引將從數(shù)組中過濾掉。生成的動(dòng)畫 GIF 雖然有點(diǎn)笨拙，但播放速度會(huì)快得多。 <\/p>\n<p>我已經(jīng)在 <code>generateGif<\/code> 函數(shù)中添加了 <code>filter<\/code> 方法來實(shí)現(xiàn)幀速率的調(diào)整。 <\/p>\n<p>就是這樣，您可以通過 HTML 畫布將 GSAP SVG 動(dòng)畫轉(zhuǎn)換為動(dòng)畫 GIF！ <\/p>\n<p>如果您對(duì)本文中描述的任何內(nèi)容有任何疑問，請(qǐng)隨時(shí)在 Twitter\/X 上找到我：@PaulieScanlon。 <\/p>"} </script>
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<a href="#如何將-GSAP-動(dòng)畫轉(zhuǎn)換為-GIF" title="如何將 GSAP 動(dòng)畫轉(zhuǎn)換為 GIF" >如何將 GSAP 動(dòng)畫轉(zhuǎn)換為 GIF</a>
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<a href="#入門" title="入門" >入門</a>
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<a href="#將光柵化數(shù)據(jù)轉(zhuǎn)換為-GIF" title="將光柵化數(shù)據(jù)轉(zhuǎn)換為 GIF" >將光柵化數(shù)據(jù)轉(zhuǎn)換為 GIF</a>
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<h1 class="Articlelist_txts_title">如何從GSAP動(dòng)畫創(chuàng)建動(dòng)畫GIF</h1>
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<img class="lazy" data-src="https://img.php.cn/upload/avatar/000/000/001/66ea80d78848b538.png" src="/static/imghw/default1.png" alt="Christopher Nolan">
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<a href="http://www.miracleart.cn/zh-tw/member/1468496.html" class="author_name">Christopher Nolan</a>
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<span id="377j5v51b" class="Articlelist_txts_time">Feb 08, 2025 am 10:31 AM</span>
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<p>將 GSAP 動(dòng)畫轉(zhuǎn)換為動(dòng)畫 GIF：使用 modern-gif 的分步指南</p>
<p><strong>關(guān)鍵要點(diǎn)</strong></p>
<ul>
<li>可以使用一個(gè)過程將 GSAP 動(dòng)畫轉(zhuǎn)換為動(dòng)畫 GIF，該過程涉及在每次調(diào)整補(bǔ)間時(shí)捕獲 SVG 數(shù)據(jù)並將其寫入 HTML 畫布。然後，可以將此 SVG 數(shù)據(jù)轉(zhuǎn)換為光柵化圖像數(shù)據(jù)，然後由 modern-gif 用於創(chuàng)建動(dòng)畫 GIF 的每一幀。 </li>
<li>轉(zhuǎn)換過程涉及多個(gè)步驟，包括捕獲 SVG 數(shù)據(jù)、將 SVG 數(shù)據(jù)轉(zhuǎn)換為光柵化數(shù)據(jù)，最後將光柵化數(shù)據(jù)轉(zhuǎn)換為 GIF。每個(gè)步驟都涉及特定的代碼修改和使用數(shù)組來存儲(chǔ)捕獲和轉(zhuǎn)換的數(shù)據(jù)。 </li>
<li>由於瀏覽器動(dòng)畫和 GIF 之間的幀速率通常不同，因此最終 GIF 的幀速率可能比原始動(dòng)畫慢。為了加快 GIF 的速度，可以使用數(shù)組過濾器和 JavaScript 餘數(shù)運(yùn)算符來確定索引是否可以被某個(gè)數(shù)字整除，從而丟棄一些幀。 </li>
</ul>
<p>本文將解釋如何使用 modern-gif 將使用 GSAP 創(chuàng)建的動(dòng)畫轉(zhuǎn)換為動(dòng)畫 GIF。 </p>
<p>以下是一個(gè)我之前製作的動(dòng)畫預(yù)覽：</p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173898187154231.jpg" class="lazy" alt="How to Create Animated GIFs from GSAP Animations "></p>
<p>在下面的鏈接中，您可以找到本文中將要參考的所有代碼的實(shí)時(shí)預(yù)覽：</p>
<ul>
<li>? 預(yù)覽：<ul>
<li>索引：gsap-animation-to-gif.netlify.app</li>
<li>簡易版：gsap-animation-to-gif.netlify.app/simple</li>
</ul>
</li>
<li>?? 代碼庫：github.com/PaulieScanlon/gsap-animation-to-gif</li>
</ul>
<p>代碼庫中有兩個(gè)“頁面”。 index 包含上面 GIF 的所有代碼，simple 是本文中介紹的步驟的起點(diǎn)。 </p>
<h2 id="如何將-GSAP-動(dòng)畫轉(zhuǎn)換為-GIF">如何將 GSAP 動(dòng)畫轉(zhuǎn)換為 GIF</h2>
<p>我用來將 GSAP 動(dòng)畫轉(zhuǎn)換為 GIF 的方法涉及在補(bǔ)間的每次“更新”時(shí)捕獲 SVG 數(shù)據(jù)並將其寫入 HTML 畫布。補(bǔ)間完成後，我就可以將 SVG 數(shù)據(jù)轉(zhuǎn)換為光柵化圖像數(shù)據(jù)，modern-gif 可以使用它來創(chuàng)建動(dòng)畫 GIF 的每一幀。 </p>
<h2 id="入門">入門</h2>
<p>這是我在簡單示例中使用的代碼，我將用它來解釋從 GSAP 動(dòng)畫創(chuàng)建動(dòng)畫 GIF 所需的每個(gè)步驟：</p>
<pre class='brush:php;toolbar:false;'><!DOCTYPE html>
<html lang='en'>
<head>
<meta charset='utf-8' />
<title>Simple</title>
</head>
<body>
<main>
<svg id='svg'
xmlns='http://www.w3.org/2000/svg'
viewBox='0 0 400 200'
width={400}
height={200}
style={{ border: '1px solid red' }}
>
<rect id='rect' x='0' y='75' width='50' height='50' fill='red'></rect>
</svg>
<canvas id='canvas' style={{ border: '1px solid blue' }} width={400} height={200}></canvas>
<img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173898187373194.jpg" class="lazy" alt="How to Create Animated GIFs from GSAP Animations " /></p>
<h2>將 SVG 數(shù)據(jù)轉(zhuǎn)換為光柵化數(shù)據(jù)</h2>
<pre class="brush:php;toolbar:false"><code class="javascript">gsap.timeline({
onUpdate: () => {
const xml = new XMLSerializer().serializeToString(svg);
const src = `data:image/svg+xml;base64,${btoa(xml)}`;
animationFrames.push(src);
},
onComplete: () => {
let inc = 0;
const renderSvgDataToCanvas = () => {
const virtualImage = new Image();
virtualImage.src = animationFrames[inc];
virtualImage.onload = () => {
ctx.clearRect(0, 0, 400, 200);
ctx.drawImage(virtualImage, 0, 0, 400, 200);
canvasFrames.push(canvas.toDataURL('image/jpeg'));
inc++;
if (inc < animationFrames.length) {
renderSvgDataToCanvas();
} else {
//console.log(canvasFrames); //調(diào)試用
generateGif();
}
};
};
renderSvgDataToCanvas();
},
})
.fromTo('#rect', { x: -50 }, { duration: 2, x: 350, ease: 'power.ease2' });</pre>
<p>此步驟稍微複雜一些，需要對(duì) animationFrames 數(shù)組的每個(gè)索引執(zhí)行一個(gè)操作。 </p>
<p>通過使用遞歸函數(shù) renderSvgDataToCanvas，我可以使用 animationFrames 數(shù)組中的圖像數(shù)據(jù)，將其寫入畫布。然後，通過使用 canvas.toDataURL('image/jpeg')，我可以將動(dòng)畫每一幀的光柵化數(shù)據(jù)存儲(chǔ)在 canvasFrames 數(shù)組中。 </p>
<p>如果已在 onComplete 函數(shù)中添加 console.log，則應(yīng)在瀏覽器控制臺(tái)中看到類似於以下內(nèi)容。但是，這次請(qǐng)注意數(shù)據(jù)的 MIME 類型：它不是 svg xml，而是 image/jpeg。這對(duì)於我接下來要做的工作很重要。 </p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173898187413228.jpg" class="lazy" alt="How to Create Animated GIFs from GSAP Animations " /></p><h2 id="將光柵化數(shù)據(jù)轉(zhuǎn)換為-GIF">將光柵化數(shù)據(jù)轉(zhuǎn)換為 GIF</h2>
<p>這是最後一步，它涉及將 canvasFrames 數(shù)組的每個(gè)索引傳遞到 modern-gif。 </p>
<pre class='brush:php;toolbar:false;'><!DOCTYPE html>
<html lang='en'>
<head>
<meta charset='utf-8' />
<title>Simple</title>
</head>
<body>
<main>
<svg id='svg'
xmlns='http://www.w3.org/2000/svg'
viewBox='0 0 400 200'
width={400}
height={200}
style={{ border: '1px solid red' }}
>
<rect id='rect' x='0' y='75' width='50' height='50' fill='red'></rect>
</svg>
<canvas id='canvas' style={{ border: '1px solid blue' }} width={400} height={200}></canvas>
<img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173898187373194.jpg" class="lazy" alt="How to Create Animated GIFs from GSAP Animations " /></p>
<h2>將 SVG 數(shù)據(jù)轉(zhuǎn)換為光柵化數(shù)據(jù)</h2>
<pre class="brush:php;toolbar:false"><code class="javascript">gsap.timeline({
onUpdate: () => {
const xml = new XMLSerializer().serializeToString(svg);
const src = `data:image/svg+xml;base64,${btoa(xml)}`;
animationFrames.push(src);
},
onComplete: () => {
let inc = 0;
const renderSvgDataToCanvas = () => {
const virtualImage = new Image();
virtualImage.src = animationFrames[inc];
virtualImage.onload = () => {
ctx.clearRect(0, 0, 400, 200);
ctx.drawImage(virtualImage, 0, 0, 400, 200);
canvasFrames.push(canvas.toDataURL('image/jpeg'));
inc++;
if (inc < animationFrames.length) {
renderSvgDataToCanvas();
} else {
//console.log(canvasFrames); //調(diào)試用
generateGif();
}
};
};
renderSvgDataToCanvas();
},
})
.fromTo('#rect', { x: -50 }, { duration: 2, x: 350, ease: 'power.ease2' });</pre>
<p>使用 modernGif.encode，您可以將數(shù)據(jù)數(shù)組傳遞到 frames 並為每一幀定義延遲，我選擇添加 0 秒的延遲。 </p>
<p>代碼的下一部分處理轉(zhuǎn)換 modernGif.ecode 數(shù)據(jù)並將其轉(zhuǎn)換為“另一個(gè)”MIME 類型，這次是 image/gif。 </p>
<p>一旦我有了表示動(dòng)畫 GIF 的最終“blob”數(shù)據(jù)，我就將其轉(zhuǎn)換為 URL，然後設(shè)置 image 和 link 元素的 src 和 href，以便我可以在瀏覽器中查看和下載 GIF。 </p>
<p><img src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/000/173898187673605.jpg" class="lazy" alt="How to Create Animated GIFs from GSAP Animations "></p>
<h2 id="幀速率">幀速率</h2>
<p>您可能會(huì)注意到最終的GIF 運(yùn)行速度相當(dāng)慢，這是因?yàn)樵跒g覽器中運(yùn)行的動(dòng)畫通常每秒播放60 幀(fps)，而GIF 的幀速率通常要慢得多，為12 或24 fps。 </p>
<p>為了“丟棄”一些動(dòng)畫幀，我使用數(shù)組過濾器和 JavaScript 餘數(shù)運(yùn)算符來確定索引是否可以被某個(gè)數(shù)字整除，在我的例子中，我選擇 6。不能被 6 整除的索引將從數(shù)組中過濾掉。生成的動(dòng)畫 GIF 雖然有點(diǎn)笨拙，但播放速度會(huì)快得多。 </p>
<p>我已經(jīng)在 <code>generateGif</code> 函數(shù)中添加了 <code>filter</code> 方法來實(shí)現(xiàn)幀速率的調(diào)整。 </p>
<p>就是這樣，您可以通過 HTML 畫布將 GSAP SVG 動(dòng)畫轉(zhuǎn)換為動(dòng)畫 GIF！ </p>
<p>如果您對(duì)本文中描述的任何內(nèi)容有任何疑問，請(qǐng)隨時(shí)在 Twitter/X 上找到我：@PaulieScanlon。 </p><p>以上是如何從GSAP動(dòng)畫創(chuàng)建動(dòng)畫GIF的詳細(xì)內(nèi)容。更多資訊請(qǐng)關(guān)注PHP中文網(wǎng)其他相關(guān)文章！</p>
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