下面我就来详细讲解“JS实现3D图片旋转展示效果代码”的完整攻略。
1. 实现思路
实现3D图片旋转展示效果的基本思路是将多张图片设置为立方体的6个面,然后通过JS控制立方体进行旋转操作,从而创造出3D图片旋转展示的效果。
2. 具体实现步骤
2.1 HTML结构设计
HTML代码需要包含一个立方体的父容器和6张图片,每张图片必须是放在一个面。为了实现立体效果,并且保持图片面的大小一致,我们可以使用定位和transform控制图片的位置和大小。具体的HTML代码见下面的示例。
<div class="cube">
<div class="cube-face cube-face-front"><img src="image1.jpg" alt=""></div>
<div class="cube-face cube-face-back"><img src="image2.jpg" alt=""></div>
<div class="cube-face cube-face-right"><img src="image3.jpg" alt=""></div>
<div class="cube-face cube-face-left"><img src="image4.jpg" alt=""></div>
<div class="cube-face cube-face-top"><img src="image5.jpg" alt=""></div>
<div class="cube-face cube-face-bottom"><img src="image6.jpg" alt=""></div>
</div>
2.2 CSS样式设计
首先,我们需要设置立方体的父容器的基本样式和立方体6个面的基本样式。
.cube {
width: 400px;
height: 400px;
margin: 50px auto;
position: relative;
transform-style: preserve-3d;
transition: transform 1s;
}
.cube-face {
position: absolute;
width: 400px;
height: 400px;
background-color: rgba(0,0,0,0.4);
border: 1px solid #fff;
}
接着,我们需要为每个面设置不同的旋转角度和位置,从而实现立体效果。
.cube-face-front {
transform: rotateY(0deg) translateZ(200px);
}
.cube-face-back {
transform: rotateY(180deg) translateZ(200px);
}
.cube-face-right {
transform: rotateY(90deg) translateZ(200px);
}
.cube-face-left {
transform: rotateY(-90deg) translateZ(200px);
}
.cube-face-top {
transform: rotateX(90deg) translateZ(200px);
}
.cube-face-bottom {
transform: rotateX(-90deg) translateZ(200px);
}
2.3 JS代码实现
接下来,我们需要使用JS来实现立方体的旋转效果。
首先,我们需要给立方体的父容器添加鼠标事件监听器。
var cube = document.querySelector('.cube');
cube.onmousedown = function (event) {
...
};
接着,在鼠标按下的时候,我们需要记录下当前鼠标的坐标和立方体的初始旋转角度。
var startX = event.clientX;
var startY = event.clientY;
var currentX = 0;
var currentY = 0;
var rotateX = 0;
var rotateY = 0;
接着,在鼠标移动时,我们需要计算出当前鼠标移动的距离,并根据距离计算出当前旋转的角度。
currentX = event.clientX - startX;
currentY = event.clientY - startY;
rotateY += currentX * 0.1;
rotateX -= currentY * 0.1;
cube.style.transform = 'rotateX(' + rotateX + 'deg) rotateY(' + rotateY + 'deg)';
最后,在鼠标松开的时候,我们需要将计算出的旋转角度归零。
currentX = 0;
currentY = 0;
3. 示例说明
下面以两个示例说明如何使用上述步骤实现3D图片旋转展示效果。
3.1 示例1
HTML代码:
<div class="cube">
<div class="cube-face cube-face-front"><img src="image1.jpg" alt=""></div>
<div class="cube-face cube-face-back"><img src="image2.jpg" alt=""></div>
<div class="cube-face cube-face-right"><img src="image3.jpg" alt=""></div>
<div class="cube-face cube-face-left"><img src="image4.jpg" alt=""></div>
<div class="cube-face cube-face-top"><img src="image5.jpg" alt=""></div>
<div class="cube-face cube-face-bottom"><img src="image6.jpg" alt=""></div>
</div>
CSS代码:
.cube {
width: 400px;
height: 400px;
margin: 50px auto;
position: relative;
transform-style: preserve-3d;
transition: transform 1s;
}
.cube-face {
position: absolute;
width: 400px;
height: 400px;
background-color: rgba(0,0,0,0.4);
border: 1px solid #fff;
}
.cube-face-front {
transform: rotateY(0deg) translateZ(200px);
}
.cube-face-back {
transform: rotateY(180deg) translateZ(200px);
}
.cube-face-right {
transform: rotateY(90deg) translateZ(200px);
}
.cube-face-left {
transform: rotateY(-90deg) translateZ(200px);
}
.cube-face-top {
transform: rotateX(90deg) translateZ(200px);
}
.cube-face-bottom {
transform: rotateX(-90deg) translateZ(200px);
}
JS代码:
var cube = document.querySelector('.cube');
cube.onmousedown = function (event) {
var startX = event.clientX;
var startY = event.clientY;
var currentX = 0;
var currentY = 0;
var rotateX = 0;
var rotateY = 0;
function onMouseMove(event) {
currentX = event.clientX - startX;
currentY = event.clientY - startY;
rotateY += currentX * 0.1;
rotateX -= currentY * 0.1;
cube.style.transform = 'rotateX(' + rotateX + 'deg) rotateY(' + rotateY + 'deg)';
}
function onMouseUp(event) {
currentX = 0;
currentY = 0;
document.removeEventListener('mousemove', onMouseMove);
document.removeEventListener('mouseup', onMouseUp);
}
document.addEventListener('mousemove', onMouseMove);
document.addEventListener('mouseup', onMouseUp);
};
3.2 示例2
HTML代码:
<div class="cube">
<div class="cube-face cube-face-front"><img src="image1.jpg" alt=""></div>
<div class="cube-face cube-face-back"><img src="image2.jpg" alt=""></div>
<div class="cube-face cube-face-right"><img src="image3.jpg" alt=""></div>
<div class="cube-face cube-face-left"><img src="image4.jpg" alt=""></div>
<div class="cube-face cube-face-top"><img src="image5.jpg" alt=""></div>
<div class="cube-face cube-face-bottom"><img src="image6.jpg" alt=""></div>
</div>
CSS代码:
.cube {
width: 600px;
height: 600px;
margin: 50px auto;
position: relative;
transform-style: preserve-3d;
transition: transform 1s;
}
.cube-face {
position: absolute;
width: 600px;
height: 600px;
background-color: rgba(0,0,0,0.4);
border: 1px solid #fff;
}
.cube-face-front {
transform: rotateY(0deg) translateZ(300px);
}
.cube-face-back {
transform: rotateY(180deg) translateZ(300px);
}
.cube-face-right {
transform: rotateY(90deg) translateZ(300px);
}
.cube-face-left {
transform: rotateY(-90deg) translateZ(300px);
}
.cube-face-top {
transform: rotateX(90deg) translateZ(300px);
}
.cube-face-bottom {
transform: rotateX(-90deg) translateZ(300px);
}
JS代码:
var cube = document.querySelector('.cube');
cube.onmousedown = function (event) {
var startX = event.clientX;
var startY = event.clientY;
var currentX = 0;
var currentY = 0;
var rotateX = 0;
var rotateY = 0;
function onMouseMove(event) {
currentX = event.clientX - startX;
currentY = event.clientY - startY;
rotateY += currentX * 0.2;
rotateX -= currentY * 0.1;
cube.style.transform = 'rotateX(' + rotateX + 'deg) rotateY(' + rotateY + 'deg)';
}
function onMouseUp(event) {
currentX = 0;
currentY = 0;
document.removeEventListener('mousemove', onMouseMove);
document.removeEventListener('mouseup', onMouseUp);
}
document.addEventListener('mousemove', onMouseMove);
document.addEventListener('mouseup', onMouseUp);
};
以上就是实现3D图片旋转展示效果的完整攻略。通过HTML、CSS和JS的结合,我们可以创造出很多炫酷的3D动画效果,希望本攻略对你有所帮助。
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