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diff --git a/files/zh-cn/web/css/transform-function/rotate/index.html b/files/zh-cn/web/css/transform-function/rotate/index.html new file mode 100644 index 0000000000..c176ecc3f2 --- /dev/null +++ b/files/zh-cn/web/css/transform-function/rotate/index.html @@ -0,0 +1,91 @@ +--- +title: rotate() +slug: Web/CSS/transform-function/rotate +tags: + - CSS + - CSS函数 + - CSS变换 +translation_of: Web/CSS/transform-function/rotate() +original_slug: Web/CSS/transform-function/rotate() +--- +<div>{{CSSRef}}</div> + +<div>CSS的<strong><code>rotate()</code></strong>函数定义了一种将元素围绕一个定点(由{{ Cssxref("transform-origin") }}属性指定)旋转而不变形的转换。指定的角度定义了旋转的量度。若角度为正,则顺时针方向旋转,否则逆时针方向旋转。旋转180°也被称为点反射。</div> + + + +<p>元素旋转的固定点 - 如上所述 - 也称为<strong>变换原点</strong>。这默认为元素的中心,但你可以使用{{ cssxref("transform-origin") }}属性设置自己的自定义变换原点。</p> + +<h2 id="语法">语法</h2> + +<p>{{cssxref("<angle>")}} 指定了 <code>rotate()</code> 的旋转程度。参数为正时,顺时针旋转;参数为负时,逆时针旋转。180° 旋转称为<em>点反演</em>。</p> + +<pre class="syntaxbox notranslate">rotate(<em>a</em>) +</pre> + +<h3 id="值">值</h3> + +<dl> + <dt><em>a</em></dt> + <dd>是一种{{ cssxref("<angle>") }},表示旋转的角度。 正角度表示了顺时针的旋转,负角度表示逆时针的旋转。</dd> +</dl> + +<table class="standard-table"> + <thead> + <tr> + <th scope="col"> + <p>笛卡尔坐标系 on ℝ<sup>2</sup></p> + </th> + <th scope="col">齐次坐标系 on ℝℙ<sup>2</sup></th> + <th scope="col">笛卡尔坐标系 on ℝ<sup>3</sup></th> + <th scope="col">齐次坐标系 on ℝℙ<sup>3</sup></th> + </tr> + </thead> + <tbody> + <tr> + <td colspan="1" rowspan="2"><math> <mfenced> <mtable> <mtr><mtd>cos(a)</mtd><mtd>-sin(a)</mtd></mtr> <mtr><mtd>sin(a)</mtd><mtd>cos(a)</mtd></mtr></mtable></mfenced></math></td> + <td><math> <mfenced><mtable><mtr><mtd>cos(a)</mtd><mtd>-sin(a)</mtd><mtd>0</mtd></mtr><mtr><mtd>sin(a)</mtd><mtd>cos(a)</mtd><mtd>0</mtd></mtr><mtr><mtd>0</mtd><mtd>0</mtd><mtd>1</mtd></mtr></mtable> </mfenced> </math></td> + <td colspan="1" rowspan="2"><math> <mfenced><mtable><mtr><mtd>cos(a)</mtd><mtd>-sin(a)</mtd><mtd>0</mtd></mtr><mtr><mtd>sin(a)</mtd><mtd>cos(a)</mtd><mtd>0</mtd></mtr><mtr><mtd>0</mtd><mtd>0</mtd><mtd>1</mtd></mtr></mtable> </mfenced> </math></td> + <td colspan="1" rowspan="2"><math> <mfenced><mtable><mtr><mtd>cos(a)</mtd><mtd>-sin(a)</mtd><mtd>0</mtd><mtd>0</mtd></mtr><mtr><mtd>sin(a)</mtd><mtd>cos(a)</mtd><mtd>0</mtd><mtd>0</mtd></mtr><mtr><mtd>0</mtd><mtd>0</mtd><mtd>1</mtd><mtd>0</mtd></mtr><mtr><mtd>0</mtd><mtd>0</mtd><mtd>0</mtd><mtd>1</mtd></mtr></mtable> </mfenced> </math></td> + </tr> + <tr> + <td><code>[cos(a) sin(a) -sin(a) cos(a) 0 0]</code></td> + </tr> + </tbody> +</table> + +<h2 id="示例">示例</h2> + +<h3 id="HTML">HTML</h3> + +<pre class="brush: html notranslate"><div>Normal</div> +<div class="rotated">Rotated</div></pre> + +<h3 id="CSS">CSS</h3> + +<pre class="brush: css notranslate">div { + width: 80px; + height: 80px; + background-color: skyblue; +} + +.rotated { + transform: rotate(45deg); /* Equal to rotateZ(45deg) */ + background-color: pink; +}</pre> + +<h3 id="结果">结果</h3> + +<p>{{EmbedLiveSample("示例","100%","200")}}</p> + +<h2 id="浏览器兼容">浏览器兼容</h2> + +<p>有关兼容性信息,请参阅<code><a href="https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function#Browser_compatibility"><transform-function></a></code>数据类型。</p> + +<h2 id="参见">参见</h2> + +<ul> + <li>{{cssxref("transform")}}</li> + <li>{{cssxref("<transform-function>")}}</li> + <li><code><a href="https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/rotate3d">rotate3d()</a></code></li> +</ul> |