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diff --git a/files/zh-cn/web/css/transform-function/perspective/index.html b/files/zh-cn/web/css/transform-function/perspective/index.html new file mode 100644 index 0000000000..56d6762b9e --- /dev/null +++ b/files/zh-cn/web/css/transform-function/perspective/index.html @@ -0,0 +1,47 @@ +--- +title: perspective() +slug: Web/CSS/transform-function/perspective +translation_of: Web/CSS/transform-function/perspective() +original_slug: Web/CSS/transform-function/perspective() +--- +<div>{{CSSRef}}</div> + +<div>透视函数定义了到z=0的坐标轴,使用者能够得到3D定位元素的透视,每个3D元素在Z轴的位置大于零意味着离使用者更近,因此会变得更大,同理当元素Z周小于零时会变得ge</div> + +<p>T更小,变化的幅度决定于属性值的变化大小 </p> + +<h2 id="语法">语法</h2> + +<pre class="syntaxbox notranslate">perspective(l) +</pre> + +<h2 id="参数">参数</h2> + +<dl> + <dt><em>l</em></dt> + <dd>这个{{cssxref("<length>")}} 得到的是距离0坐标的距离. 被用作提供一个透视渐变属性给某个元素. 如果这个值是0或者不合法的值,将不会产生透视的变化.</dd> +</dl> + +<table class="standard-table"> + <thead> + <tr> + <th scope="col">Cartesian coordinates on ℝ<sup>2</sup></th> + <th scope="col">Homogeneous coordinates on ℝℙ<sup>2</sup></th> + <th scope="col">Cartesian coordinates on ℝ<sup>3</sup></th> + <th scope="col">Homogeneous coordinates on ℝℙ<sup>3</sup></th> + </tr> + </thead> + <tbody> + <tr> + <td colspan="2" rowspan="2"> + <p>这个属性变化提供了一个3D空间,并且不会变成平面类型</p> + </td> + <td colspan="1" rowspan="2">A perspective is not a linear transform in ℝ<sup>3</sup> and cannot be represented using a matrix in the Cartesian coordinates system.</td> + <td colspan="1" rowspan="2"><math> <mfenced><mtable><mtr>1<mtd>0</mtd><mtd>0</mtd><mtd>0</mtd></mtr><mtr>0<mtd>1</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><mo>−</mo>1<mo>/</mo>d</mtd><mtd>1</mtd></mtr></mtable> </mfenced> </math></td> + </tr> + </tbody> +</table> + +<h2 id="Examples">Examples</h2> + +<p>TBD</p> |