文章目錄
- reference
- experiment code
- 效果
- skew()和shear mapping函數
reference
skew() - CSS: Cascading Style Sheets | MDN (mozilla.org)
experiment code
這是一個動畫,展示了skew()的變化過程(使用了animation來輔助了解)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta
http-equiv="X-UA-Compatible"
content="IE=edge"
>
<meta
name="viewport"
content="width=device-width, initial-scale=1.0"
>
<title>Document</title>
<style>
/* skew learning */
.box_3_1 {
/* box-sizing: border-box; */
width: 300px;
height: 100px;
border: solid;
border-top: solid blue 12px;
border-left: dashed red 12px;
}
.skewerX {
/* transform: skewX(45deg); */
animation: skewerX 5s infinite alternate
}
.skewerY {
/* transform: skewY(45deg); */
animation: skewerY 5s infinite alternate
}
.skewer_ani {
border-radius: 0;
animation: skewer_frames 10s infinite alternate;
/* transform: skew(15deg, 15deg);
transform: skew(85deg, 85deg);
transform: skew(45deg, 60deg);
transform: skew(45deg, 30deg); */
}
@keyframes skewer_frames {
from {
transform: skew(0deg, 0deg);
}
/* 兩個參數角度和超過90度的時候,容易看出變化規律 */
to {
transform: skew(80deg, 40deg);
}
}
@keyframes skewerX {
from {
transform: skew(0deg, 0deg);
}
to {
transform: skew(60deg, 0deg);
}
}
@keyframes skewerY {
from {
transform: skew(0deg, 0deg);
}
to {
transform: skew(0deg, 60deg);
}
}
div {
margin: 15%;
}
</style>
</head>
<body>
<section>
<div class="original">
<div class="spin ">
</div>
<figure class="box_3_1 skewerX">Box X ani</figure>
<p class="text-align-center">animation: skewerX 5s infinite alternate</p>
<p>本例子中,我們變化效果相當于操作skewX(),水準邊保持和x軸平行,而且矩形高度保持不變</p>
</div>
<div class="original">
<div class="spin ">
</div>
<figure class="box_3_1 skewerY">Box Y ani</figure>
<p class="text-align-center">animation: skewerY 5s infinite alternate</p>
<p>類似的,垂直邊保持和y軸平行,矩形寬度不變</p>
<p>藍邊和水準軸的夾角最大時刻為設定值:60度</p>
</div>
<div class="original">
<div class="spin ">
</div>
<figure class="box_3_1 skewer_ani">Box 4</figure>
<p class="text-align-center">animation: skewer_frames 10s infinite alternate;</p>
<p>本例子中,我們看到紅藍邊發生了上下相對位置發生了交換</p>
<p>最終,紅邊和豎直線Y軸的變化為(0->80度)</p>
<p>藍邊和水準邊(x軸)的夾角從(0->40度)</p>
</div>
</section>
</body>
</html> 效果
skew()和shear mapping函數
skew() - CSS: Cascading Style Sheets | MDN (mozilla.org)
- This transformation is ashear mapping (transvection)(維基百科連結) that distorts each point within an element by a certain angle in the horizontal and vertical directions.
- The effect isas if you grabbed each corner of the element and pulled themalonga certain angle.
- The coordinates of each point are modified bya value proportionate to the specified angle and the distance to the origin.
- Thus, thefartherfrom the origin a point is,the greater the value added to it.
-
css_transform_skew()中的角度問題_動畫示範角度變化 -
css_transform_skew()中的角度問題_動畫示範角度變化 -
css_transform_skew()中的角度問題_動畫示範角度變化