CSS 属性 perspective-origin 指定了查看者/用户正在查看的位置。此位置被 CSS perspective 属性用作消失点。
属性 perspective-origin 和 perspective 与在三维空间中转换的子项的父项相关联;而转换函数 Perspective（） 链接到正在转换的元素。
可能的值
CSS 属性 perspective-origin 可以具有以下值之一：
1. x-position：指定消失点的横坐标（x 轴）的位置。它可以具有给定的值之一：
- <length-percentage>：将位置指定为绝对长度值或相对于元素宽度的位置。值可能为负数。
- left：长度值为 0 的关键字。
- center：关键字的长度值为50%百分比值。
- right：长度值的关键字 100% 百分比值。
2. y 位置：指定消失点的纵坐标（y 轴）的位置。它可以具有给定的值之一：
- <length-percentage>：将位置指定为绝对长度值或相对于元素宽度的位置。值可能为负数。
- top：长度值为 0 的关键字。
- center：关键字的长度值为50%百分比值。
- bottom：长度值的关键字 100% 百分比值。
适用于
所有可转换元素。
语法
以下是指定 perspective-origin 属性的不同方法：
/* One-value syntax */
perspective-origin = x-position;
/* Two-value syntax */
perspective-origin = x-position y-position;
/* x-position and y-position values are keywords, following syntax is valid */
perspective-origin = y-position x-position;
/* Global values */
perspective-origin: inherit;
perspective-origin: initial;
perspective-origin: revert;
perspective-origin: revert-layer;
perspective-origin: unset;
CSS perspective-origin - x-position （关键字）
以下示例演示了如何使用 CSS 属性 perspective-origin 和 One-value 语法（关键字值）。
<html>
<head>
<style>
.container {
width: 150px;
height: 150px;
border: none;
display: block;
}
.cube {
width: 30%;
height: 30%;
perspective: 350px;
transform-style: preserve-3d;
margin-bottom: 80px;
padding: 10px;
}
.face {
position: absolute;
width: 100px;
height: 100px;
border: 1px solid black;
line-height: 80px;
font-size: 3.5em;
color: white;
text-align: center;
}
.front {
background: rgba(100, 0, 100, 0.2);
transform: translateZ(50px);
}
.back {
background: rgba(178, 178, 0, 0.5);
color: black;
transform: rotateY(180deg) translateZ(50px);
}
.right {
background: rgba(0, 0, 178, 0.5);
transform: rotateY(90deg) translateZ(50px);
}
.left {
background: rgba(178, 0, 0, 0.5);
transform: rotateY(-90deg) translateZ(50px);
}
.top {
background: rgba(0, 200, 0);
transform: rotateX(90deg) translateZ(50px);
}
.bottom {
background: rgba(0, 0, 0, 0.2);
transform: rotateX(-90deg) translateZ(50px);
}
.po-left {
perspective-origin: left;
}
.po-right {
perspective-origin: right;
}
.po-center {
perspective-origin: center;
}
</style>
</head>
<body>
<h1>perspective-origin - x-position</h1>
<div class="container">
<p>perspective-origin: left</p>
<div class="cube po-left">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: center</p>
<div class="cube po-center">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: right</p>
<div class="cube po-right">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
</div>
</body>
</html>
CSS perspective-origin - x 位置（长度）
以下示例演示了如何使用 CSS 属性 perspective-origin 和 One-value 语法（长度值），包括正值和负值。
<html>
<head>
<style>
.container {
width: 150px;
height: 150px;
border: none;
display: block;
}
.cube {
width: 30%;
height: 30%;
perspective: 350px;
transform-style: preserve-3d;
margin-bottom: 80px;
padding: 20px;
}
.face {
position: absolute;
width: 100px;
height: 100px;
border: 1px solid black;
line-height: 80px;
font-size: 3.5em;
color: white;
text-align: center;
}
.front {
background: rgba(100, 0, 100, 0.2);
transform: translateZ(50px);
}
.back {
background: rgba(178, 178, 0, 0.5);
color: black;
transform: rotateY(180deg) translateZ(50px);
}
.right {
background: rgba(0, 0, 178, 0.5);
transform: rotateY(90deg) translateZ(50px);
}
.left {
background: rgba(178, 0, 0, 0.5);
transform: rotateY(-90deg) translateZ(50px);
}
.top {
background: rgba(0, 200, 0);
transform: rotateX(90deg) translateZ(50px);
}
.bottom {
background: rgba(0, 0, 0, 0.2);
transform: rotateX(-90deg) translateZ(50px);
}
.po-length-cm {
perspective-origin: 10cm;
}
.po-length-em {
perspective-origin: 20em;
}
.po-length-px {
perspective-origin: 200px;
}
.po-length-neg {
perspective-origin: -200px;
}
</style>
</head>
<body>
<center>
<h1>perspective-origin - x-position</h1>
<div class="container">
<p>perspective-origin: 10cm</p>
<div class="cube po-length-cm">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: 20em</p>
<div class="cube po-length-em">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: 200px</p>
<div class="cube po-length-px">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: -200px</p>
<div class="cube po-length-neg">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
</div>
</center>
</body>
</html>
CSS perspective-origin - x 位置（百分比）
以下示例演示了如何使用 CSS 属性 perspective-origin 和 One-value 语法（百分比值），包括正值和负值。
<html>
<head>
<style>
.container {
width: 150px;
height: 150px;
border: none;
display: block;
}
.cube {
width: 30%;
height: 30%;
perspective: 350px;
transform-style: preserve-3d;
margin-bottom: 80px;
padding: 20px;
}
.face {
position: absolute;
width: 100px;
height: 100px;
border: 1px solid black;
line-height: 80px;
font-size: 3.5em;
color: white;
text-align: center;
}
.front {
background: rgba(100, 0, 100, 0.2);
transform: translateZ(50px);
}
.back {
background: rgba(178, 178, 0, 0.5);
color: black;
transform: rotateY(180deg) translateZ(50px);
}
.right {
background: rgba(0, 0, 178, 0.5);
transform: rotateY(90deg) translateZ(50px);
}
.left {
background: rgba(178, 0, 0, 0.5);
transform: rotateY(-90deg) translateZ(50px);
}
.top {
background: rgba(0, 200, 0);
transform: rotateX(90deg) translateZ(50px);
}
.bottom {
background: rgba(0, 0, 0, 0.2);
transform: rotateX(-90deg) translateZ(50px);
}
.po-per-positive {
perspective-origin: 200%;
}
.po-per-negative {
perspective-origin: -200%;
}
</style>
</head>
<body>
<center>
<h1>perspective-origin - x-position</h1>
<div class="container">
<p>perspective-origin: 200%</p>
<div class="cube po-per-positive">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: -200%</p>
<div class="cube po-per-negative">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
</div>
</center>
</body>
</html>
CSS perspective-origin - y-position （关键字）
以下示例演示了如何使用 CSS 属性 perspective-origin 和 One-value 语法（关键字值）。
<html>
<head>
<style>
.container {
width: 150px;
height: 150px;
border: none;
display: block;
}
.cube {
width: 30%;
height: 30%;
perspective: 350px;
transform-style: preserve-3d;
margin-bottom: 80px;
padding: 20px;
}
.face {
position: absolute;
width: 100px;
height: 100px;
border: 1px solid black;
line-height: 80px;
font-size: 3.5em;
color: white;
text-align: center;
}
.front {
background: rgba(100, 0, 100, 0.2);
transform: translateZ(50px);
}
.back {
background: rgba(178, 178, 0, 0.5);
color: black;
transform: rotateY(180deg) translateZ(50px);
}
.right {
background: rgba(0, 0, 178, 0.5);
transform: rotateY(90deg) translateZ(50px);
}
.left {
background: rgba(178, 0, 0, 0.5);
transform: rotateY(-90deg) translateZ(50px);
}
.top {
background: rgba(0, 200, 0);
transform: rotateX(90deg) translateZ(50px);
}
.bottom {
background: rgba(0, 0, 0, 0.2);
transform: rotateX(-90deg) translateZ(50px);
}
.po-y-top {
perspective-origin: top;
}
.po-y-center {
perspective-origin: center;
}
.po-y-bottom {
perspective-origin: bottom;
}
</style>
</head>
<body>
<center>
<h1>perspective-origin: y-position (keyword)</h1>
<div class="container">
<p>perspective-origin: top</p>
<div class="cube po-y-top">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: center</p>
<div class="cube po-y-center">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: bottom</p>
<div class="cube po-y-bottom">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
</div>
</center>
</body>
</html>
CSS perspective-origin -x-position， y-position（关键字）
以下示例演示了如何使用 CSS 属性 perspective-origin 和双值语法（关键字值）。
<html>
<head>
<style>
.container {
width: 150px;
height: 150px;
border: none;
display: block;
}
.cube {
width: 30%;
height: 30%;
perspective: 350px;
transform-style: preserve-3d;
margin-bottom: 80px;
padding: 20px;
}
.face {
position: absolute;
width: 100px;
height: 100px;
border: 1px solid black;
line-height: 80px;
font-size: 3.5em;
color: white;
text-align: center;
}
.front {
background: rgba(100, 0, 100, 0.2);
transform: translateZ(50px);
}
.back {
background: rgba(178, 178, 0, 0.5);
color: black;
transform: rotateY(180deg) translateZ(50px);
}
.right {
background: rgba(0, 0, 178, 0.5);
transform: rotateY(90deg) translateZ(50px);
}
.left {
background: rgba(178, 0, 0, 0.5);
transform: rotateY(-90deg) translateZ(50px);
}
.top {
background: rgba(0, 200, 0);
transform: rotateX(90deg) translateZ(50px);
}
.bottom {
background: rgba(0, 0, 0, 0.2);
transform: rotateX(-90deg) translateZ(50px);
}
.po-left-top {
perspective-origin: left top;
}
.po-center-bottom {
perspective-origin: center bottom;
}
.po-right-bottom {
perspective-origin: right bottom;
}
</style>
</head>
<body>
<center>
<h1>perspective-origin: x-position y-position (keyword)</h1>
<div class="container">
<p>perspective-origin: left top</p>
<div class="cube po-left-top">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: center bottom</p>
<div class="cube po-center-bottom">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: right bottom</p>
<div class="cube po-right-bottom">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
</div>
</center>
</body>
</html>
CSS perspective-origin - x-position， y-position， （百分比）
以下示例演示了如何使用 CSS 属性 perspective-origin 和双值语法（百分比值），包括正值和负值。
<html>
<head>
<style>
.container {
width: 150px;
height: 150px;
border: none;
display: block;
}
.cube {
width: 30%;
height: 30%;
perspective: 350px;
transform-style: preserve-3d;
margin-bottom: 80px;
padding: 20px;
}
.face {
position: absolute;
width: 100px;
height: 100px;
border: 1px solid black;
line-height: 80px;
font-size: 3.5em;
color: white;
text-align: center;
}
.front {
background: rgba(100, 0, 100, 0.2);
transform: translateZ(50px);
}
.back {
background: rgba(178, 178, 0, 0.5);
color: black;
transform: rotateY(180deg) translateZ(50px);
}
.right {
background: rgba(0, 0, 178, 0.5);
transform: rotateY(90deg) translateZ(50px);
}
.left {
background: rgba(178, 0, 0, 0.5);
transform: rotateY(-90deg) translateZ(50px);
}
.top {
background: rgba(0, 200, 0);
transform: rotateX(90deg) translateZ(50px);
}
.bottom {
background: rgba(0, 0, 0, 0.2);
transform: rotateX(-90deg) translateZ(50px);
}
.po-per-positive {
perspective-origin: 250% 100%;
}
.po-per-negative {
perspective-origin: -200% -100%;
}
</style>
</head>
<body>
<center>
<h1>perspective-origin: x-position y-position</h1>
<div class="container">
<p>perspective-origin: 250% 100%</p>
<div class="cube po-per-positive">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: -200% -100%</p>
<div class="cube po-per-negative">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
</div>
</center>
</body>
</html>
CSS perspective-origin - x-position， y-position， （长度）
以下示例演示了如何使用 CSS 属性 perspective-origin 和双值语法（长度值），包括正值和负值。
<html>
<head>
<style>
.container {
width: 150px;
height: 150px;
border: none;
display: block;
}
.cube {
width: 30%;
height: 30%;
perspective: 350px;
transform-style: preserve-3d;
margin-bottom: 80px;
padding: 20px;
}
.face {
position: absolute;
width: 100px;
height: 100px;
border: 1px solid black;
line-height: 80px;
font-size: 3.5em;
color: white;
text-align: center;
}
.front {
background: rgba(100, 0, 100, 0.2);
transform: translateZ(50px);
}
.back {
background: rgba(178, 178, 0, 0.5);
color: black;
transform: rotateY(180deg) translateZ(50px);
}
.right {
background: rgba(0, 0, 178, 0.5);
transform: rotateY(90deg) translateZ(50px);
}
.left {
background: rgba(178, 0, 0, 0.5);
transform: rotateY(-90deg) translateZ(50px);
}
.top {
background: rgba(0, 200, 0);
transform: rotateX(90deg) translateZ(50px);
}
.bottom {
background: rgba(0, 0, 0, 0.2);
transform: rotateX(-90deg) translateZ(50px);
}
.po-len-positive {
perspective-origin: 250px 100px;
}
.po-len-negative {
perspective-origin: -200px -100px;
}
</style>
</head>
<body>
<center>
<h1>perspective-origin: x-position y-position</h1>
<div class="container">
<p>perspective-origin: 250px 100px</p>
<div class="cube po-len-positive">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
<p>perspective-origin: -200px -100px</p>
<div class="cube po-len-negative">
<div class="face front"></div>
<div class="face back"></div>
<div class="face right"></div>
<div class="face left"></div>
<div class="face top"></div>
<div class="face bottom"></div>
</div>
</div>
</center>
</body>
</html>
