--- title: perspective-origin slug: Web/CSS/perspective-origin translation_of: Web/CSS/perspective-origin ---
CSS 属性 perspective-origin 指定了观察者的位置,用作 {{cssxref("perspective")}} 属性的消失点。
/* One-value syntax */ perspective-origin: x-position; /* Two-value syntax */ perspective-origin: x-position y-position; /* When both x-position and y-position are keywords, the following is also valid */ perspective-origin: y-position x-position; /* Global values */ perspective-origin: inherit; perspective-origin: initial; perspective-origin: unset;
left, 关键字,0值的简记。center, 关键字,50%的简记。right, 关键字,100%的简记。top, 关键字,0值的简记。center, 关键字,50%的简记。bottom, 关键字,100%的简记。这个例子展示了带有常用 perspective-origin 值的立方体。
{{EmbedLiveSample('Changing_the_perspective_origin', '100%', 700)}}
<table>
<tbody>
<tr>
<th>
<code>perspective-origin: top left;</code>
</th>
<th>
<code>perspective-origin: top;</code>
</th>
<th>
<code>perspective-origin: top right;</code>
</th>
</tr>
<tr>
<td>
<div class="container">
<div class="cube potl">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube potm">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube potr">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
</tr>
<tr>
<th>
<code>perspective-origin: left;</code>
</th>
<th>
<code>perspective-origin: 50% 50%;</code>
</th>
<th>
<code>perspective-origin: right;</code>
</th>
</tr>
<tr>
<td>
<div class="container">
<div class="cube poml">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube pomm">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube pomr">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
</tr>
<tr>
<th>
<code>perspective-origin: bottom left;</code>
</th>
<th>
<code>perspective-origin: bottom;</code>
</th>
<th>
<code>perspective-origin: bottom right;</code>
</th>
</tr>
<tr>
<td>
<div class="container">
<div class="cube pobl">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube pobm">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
<td>
<div class="container">
<div class="cube pobr">
<div class="face front">1</div>
<div class="face back">2</div>
<div class="face right">3</div>
<div class="face left">4</div>
<div class="face top">5</div>
<div class="face bottom">6</div>
</div>
</div>
</td>
</tr>
</tbody>
</table>
/* Shorthand classes for perspective-origin values */
.potl {
perspective-origin: top left;
-webkit-perspective-origin: top left;
}
.potm {
perspective-origin: top;
-webkit-perspective-origin: top;
}
.potr {
perspective-origin: top right;
-webkit-perspective-origin: top right;
}
.poml {
perspective-origin: left;
-webkit-perspective-origin: left;
}
.pomm {
perspective-origin: 50% 50%;
-webkit-perspective-origin: 50% 50%;
}
.pomr {
perspective-origin: right;
-webkit-perspective-origin: right;
}
.pobl {
perspective-origin: bottom left;
-webkit-perspective-origin: bottom left;
}
.pobm {
perspective-origin: bottom;
-webkit-perspective-origin: bottom;
}
.pobr {
perspective-origin: bottom right;
-webkit-perspective-origin: bottom right;
}
/* Define the container div, the cube div, and a generic face */
.container {
width: 100px;
height: 100px;
margin: 24px;
border: none;
}
.cube {
width: 100%;
height: 100%;
backface-visibility: visible;
perspective: 300px;
transform-style: preserve-3d;
-webkit-backface-visibility: visible;
-webkit-perspective: 300px;
-webkit-transform-style: preserve-3d;
}
.face {
display: block;
position: absolute;
width: 100px;
height: 100px;
border: none;
line-height: 100px;
font-family: sans-serif;
font-size: 60px;
color: white;
text-align: center;
}
/* Define each face based on direction */
.front {
background: rgba(0, 0, 0, 0.3);
transform: translateZ(50px);
-webkit-transform: translateZ(50px);
}
.back {
background: rgba(0, 255, 0, 1);
color: black;
transform: rotateY(180deg) translateZ(50px);
-webkit-transform: rotateY(180deg) translateZ(50px);
}
.right {
background: rgba(196, 0, 0, 0.7);
transform: rotateY(90deg) translateZ(50px);
-webkit-transform: rotateY(90deg) translateZ(50px);
}
.left {
background: rgba(0, 0, 196, 0.7);
transform: rotateY(-90deg) translateZ(50px);
-webkit-transform: rotateY(-90deg) translateZ(50px);
}
.top {
background: rgba(196, 196, 0, 0.7);
transform: rotateX(90deg) translateZ(50px);
-webkit-transform: rotateX(90deg) translateZ(50px)
}
.bottom {
background: rgba(196, 0, 196, 0.7);
transform: rotateX(-90deg) translateZ(50px);
-webkit-transform: rotateX(-90deg) translateZ(50px);
}
/* Make the table a little nicer */
th, p, td {
background-color: #EEEEEE;
padding: 10px;
font-family: sans-serif;
text-align: left;
}
| Specification | Status | Comment |
|---|---|---|
| {{SpecName('CSS Transforms 2', '#perspective-origin-property', 'perspective-origin')}} | {{Spec2('CSS Transforms 2')}} | Initial definition. |
{{cssinfo}}
{{Compat("css.properties.perspective-origin")}}