Web Front-end
CSS Tutorial
How to use CSS and D3 to achieve black and white overlapping animation effects
How to use CSS and D3 to achieve black and white overlapping animation effects
The content of this article is about how to use CSS and D3 to achieve the black and white overlapping animation effect. The article introduces the understanding of this in js, which has certain reference value. Friends in need You can refer to it, I hope it will be helpful to you.
Effect Preview
Code Interpretation
Define dom, the container contains 3 sub-elements, each sub-element represents a circle:
<div> <span></span> <span></span> <span></span> </div>
Centered display:
body {
margin: 0;
height: 100vh;
display: flex;
align-items: center;
justify-content: center;
background-color: black;
}Define container size:
.circles {
width: 60vmin;
height: 60vmin;
}Draw a circle in the container:
.circles {
position: relative;
}
.circles span {
position: absolute;
box-sizing: border-box;
width: 50%;
height: 50%;
background-color: white;
border-radius: 50%;
left: 25%;
}Define variables and draw multiple circles, each The circle rotates around the bottom midpoint of the first circle to form a larger circle:
.circles {
--particles: 3;
}
.circles span {
transform-origin: bottom center;
--deg: calc(360deg / var(--particles) * (var(--n) - 1));
transform: rotate(var(--deg));
}
.circles span:nth-child(1) {
--n: 1;
}
.circles span:nth-child(2) {
--n: 2;
}
.circles span:nth-child(3) {
--n: 3;
}Add animation effects to sub-elements:
.circles span {
animation: rotating 5s ease-in-out infinite;
}
@keyframes rotating {
0% {
transform: rotate(0);
}
50% {
transform: rotate(var(--deg)) translateY(0);
}
100% {
transform: rotate(var(--deg)) translateY(100%) scale(2);
}
}Set the sub-element color mixing mode so that The overlapping parts between sub-elements are displayed in black:
.circles span {
mix-blend-mode: difference;
}Add animation effects to the container to offset the enlargement of sub-elements and make the animation smoothly connected:
.circles {
animation: zoom 5s linear infinite;
}
@keyframes zoom {
to {
transform: scale(0.5) translateY(-50%);
}
}Next, use d3 to batch process dom elements and css variables.
Introducing the d3 library:
<script></script>
Use d3 to assign values to variables representing the number of circles:
const COUNT_OF_PARTICLES = 30;
d3.select('.circles')
.style('--particles', COUNT_OF_PARTICLES)Use d3 to generate dom elements:
d3.select('.circles')
.style('--particles', COUNT_OF_PARTICLES)
.selectAll('span')
.data(d3.range(COUNT_OF_PARTICLES))
.enter()
.append('span');Use d3 to represent sub-elements Subscript variable assignment:
d3.select('.circles')
.style('--particles', COUNT_OF_PARTICLES)
.selectAll('span')
.data(d3.range(COUNT_OF_PARTICLES))
.enter()
.append('span')
.style('--n', (d) => d + 1);Delete the relevant dom elements in the html file and the relevant css variables in the css file.
Finally, adjust the number of circles to 30:
const COUNT_OF_PARTICLES = 30;
You’re done!
Related recommendations:
How to use pure CSS to implement an animation effect without DOM elements
How to use pure CSS to implement a mobile animation The little white rabbit animation effect
How to use CSS to achieve the effect of the truck loaderThe above is the detailed content of How to use CSS and D3 to achieve black and white overlapping animation effects. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
How to use bootstrap in vue
Apr 07, 2025 pm 11:33 PM
Using Bootstrap in Vue.js is divided into five steps: Install Bootstrap. Import Bootstrap in main.js. Use the Bootstrap component directly in the template. Optional: Custom style. Optional: Use plug-ins.
The Roles of HTML, CSS, and JavaScript: Core Responsibilities
Apr 08, 2025 pm 07:05 PM
HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.
How to write split lines on bootstrap
Apr 07, 2025 pm 03:12 PM
There are two ways to create a Bootstrap split line: using the tag, which creates a horizontal split line. Use the CSS border property to create custom style split lines.
Understanding HTML, CSS, and JavaScript: A Beginner's Guide
Apr 12, 2025 am 12:02 AM
WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.
How to set up the framework for bootstrap
Apr 07, 2025 pm 03:27 PM
To set up the Bootstrap framework, you need to follow these steps: 1. Reference the Bootstrap file via CDN; 2. Download and host the file on your own server; 3. Include the Bootstrap file in HTML; 4. Compile Sass/Less as needed; 5. Import a custom file (optional). Once setup is complete, you can use Bootstrap's grid systems, components, and styles to create responsive websites and applications.
How to insert pictures on bootstrap
Apr 07, 2025 pm 03:30 PM
There are several ways to insert images in Bootstrap: insert images directly, using the HTML img tag. With the Bootstrap image component, you can provide responsive images and more styles. Set the image size, use the img-fluid class to make the image adaptable. Set the border, using the img-bordered class. Set the rounded corners and use the img-rounded class. Set the shadow, use the shadow class. Resize and position the image, using CSS style. Using the background image, use the background-image CSS property.
What Does H5 Refer To? Exploring the Context
Apr 12, 2025 am 12:03 AM
H5referstoHTML5,apivotaltechnologyinwebdevelopment.1)HTML5introducesnewelementsandAPIsforrich,dynamicwebapplications.2)Itsupportsmultimediawithoutplugins,enhancinguserexperienceacrossdevices.3)SemanticelementsimprovecontentstructureandSEO.4)H5'srespo
How to use bootstrap button
Apr 07, 2025 pm 03:09 PM
How to use the Bootstrap button? Introduce Bootstrap CSS to create button elements and add Bootstrap button class to add button text
