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How uniapp application implements painting training and animation production
How uniapp application implements painting training and animation production
How uniapp application realizes painting training and animation production
Introduction:
With the continuous development of mobile Internet technology, the development of mobile applications has become more and more more common. As a cross-platform development tool based on the Vue.js framework, uniapp provides developers with a simple and efficient way to build cross-platform applications. This article will introduce how to use uniapp to implement painting training and animation production, and attach specific code examples.
1. Painting training implementation
Painting training can allow users to improve their artistic skills and creativity. uniapp provides the Canvas component to realize the painting function. The following is a sample code for a simple painting training application:
- Create a directory named "draw" in the pages directory of uniapp, and create the "draw.vue" file in this directory.
- In the "draw.vue" file, use the Canvas component to create a canvas:
<canvas canvas-id="myCanvas" :style="canvasStyle" @touchstart="onTouchStart" @touchmove="onTouchMove"></canvas>
<script><br>export default {<br> data() {</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>return { canvasStyle: 'width: 100%; height: 100%;', ctx: null, startX: 0, startY: 0 };</pre><div class="contentsignin">Copy after login</div></div><p>} ,<br> onReady() {</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>this.ctx = uni.createCanvasContext('myCanvas', this); this.ctx.setStrokeStyle('black'); this.ctx.setLineWidth(3);</pre><div class="contentsignin">Copy after login</div></div><p>},<br> methods: {</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>onTouchStart(event) { const { x, y } = event.touches[0]; this.startX = x; this.startY = y; this.ctx.beginPath(); this.ctx.moveTo(this.startX, this.startY); }, onTouchMove(event) { const { x, y } = event.touches[0]; this.ctx.lineTo(x, y); this.ctx.stroke(); }</pre><div class="contentsignin">Copy after login</div></div><p>}<br>}<br></script>
- In the style file of "draw.vue", add the following CSS styles:
.container {
display: flex;
justify-content: center;
align -items: center;
height: 100vh;
}
2. Animation production implementation
Animation production allows users to create unique dynamic effects. uniapp provides the Animation component to implement animation. Effect. The following is a sample code for a simple animation application:
- Create a directory named "animation" under the "draw" directory, and create the "animation.vue" file in this directory.
- In the "animation.vue" file, use the Animation component to create an animation effect:
<animation :steps="steps" :style="animationStyle"></animation>
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Hot Topics
How to start preview of uniapp project developed by webstorm
Apr 08, 2024 pm 06:42 PM
Steps to launch UniApp project preview in WebStorm: Install UniApp Development Tools plugin Connect to device settings WebSocket launch preview
Which one is better, uniapp or mui?
Apr 06, 2024 am 05:18 AM
Generally speaking, uni-app is better when complex native functions are needed; MUI is better when simple or highly customized interfaces are needed. In addition, uni-app has: 1. Vue.js/JavaScript support; 2. Rich native components/API; 3. Good ecosystem. The disadvantages are: 1. Performance issues; 2. Difficulty in customizing the interface. MUI has: 1. Material Design support; 2. High flexibility; 3. Extensive component/theme library. The disadvantages are: 1. CSS dependency; 2. Does not provide native components; 3. Small ecosystem.
What are the disadvantages of uniapp
Apr 06, 2024 am 04:06 AM
UniApp has many conveniences as a cross-platform development framework, but its shortcomings are also obvious: performance is limited by the hybrid development mode, resulting in poor opening speed, page rendering, and interactive response. The ecosystem is imperfect and there are few components and libraries in specific fields, which limits creativity and the realization of complex functions. Compatibility issues on different platforms are prone to style differences and inconsistent API support. The security mechanism of WebView is different from native applications, which may reduce application security. Application releases and updates that support multiple platforms at the same time require multiple compilations and packages, increasing development and maintenance costs.
What basics are needed to learn uniapp?
Apr 06, 2024 am 04:45 AM
uniapp development requires the following foundations: front-end technology (HTML, CSS, JavaScript) mobile development knowledge (iOS and Android platforms) Node.js other foundations (version control tools, IDE, mobile development simulator or real machine debugging experience)
What is the difference between uniapp and flutter
Apr 06, 2024 am 04:30 AM
UniApp is based on Vue.js, and Flutter is based on Dart. Both support cross-platform development. UniApp provides rich components and easy development, but its performance is limited by WebView; Flutter uses a native rendering engine, which has excellent performance but is more difficult to develop. UniApp has an active Chinese community, and Flutter has a large and global community. UniApp is suitable for scenarios with rapid development and low performance requirements; Flutter is suitable for complex applications with high customization and high performance.
Which is better, uniapp or native development?
Apr 06, 2024 am 05:06 AM
When choosing between UniApp and native development, you should consider development cost, performance, user experience, and flexibility. The advantages of UniApp are cross-platform development, rapid iteration, easy learning and built-in plug-ins, while native development is superior in performance, stability, native experience and scalability. Weigh the pros and cons based on specific project needs. UniApp is suitable for beginners, and native development is suitable for complex applications that pursue high performance and seamless experience.
What component library does uniapp use to develop small programs?
Apr 06, 2024 am 03:54 AM
Recommended component library for uniapp to develop small programs: uni-ui: Officially produced by uni, it provides basic and business components. vant-weapp: Produced by Bytedance, with a simple and beautiful UI design. taro-ui: produced by JD.com and developed based on the Taro framework. fish-design: Produced by Baidu, using Material Design design style. naive-ui: Produced by Youzan, modern UI design, lightweight and easy to customize.
