How to implement a 3D ball with touch screen support in vue

With the continuous popularity of mobile devices, many websites have begun to pay attention to the optimization of gesture operations. Vue.js is a popular JavaScript library that makes it easy to implement responsive UI. In a Vue application, a 3D ball with touch screen support can be implemented using a third-party library. In this article, we will explore how to use this library in a Vue application and explore how to change the direction of the ball's rotation.

Preparation

First, we need to create a new Vue application using the Vue CLI. You can create a new Vue application by following the guidance in the Vue CLI documentation. When creating a project, you can choose to use the default template or configure it manually. If you choose manual configuration, make sure Vue Router and Vuex are installed.

After the project is created, we need to use the following command to install the relevant dependent libraries:

npm install --save gsap vue-touch-3d-ball

Gsap is a JavaScript animation library, Vue Touch 3D Ball is a Vue component library, used in Vue Create 3D balls in the app with touch screen support.

Create Ball

In the entry component of the application, we need to import vue-touch-3d-ball and add it to the component list of this component. Additionally, we will create an object in this component that will control the direction of the ball's rotation.

<template>
  <div class="app">
    <touch-3d-ball
      ref="ball"
      :colors="colors"
      :radius="200"
      :speed="0.008"
      :span="1"
      @dragover="dragover"
    />
  </div>
</template>

<script>
import { Touch3DBall } from 'vue-touch-3d-ball'

export default {
  name: 'App',
  components: {
    Touch3DBall
  },
  data() {
    return {
      direction: {
        x: -1,
        y: -1
      }
    }
  },
}
</script>

In this component, we pass the parameters of the ball to the Touch3DBall component. When dragging on the ball, the component will fire the dragover event. We will use this event to change the direction of the ball's rotation.

Change the direction of rotation

In the dragover event handler, we will check the direction of the underlying movement and change the direction of the ball's rotation. We will use the to method from the TweenMax library to update the ball's props. Here is the code that updates the ball's direction:

<script>
export default {
  name: 'App',
  components: {
    Touch3DBall
  },
  data() {
    return {
      direction: {
        x: -1,
        y: -1
      }
    }
  },
  methods: {
    dragover({ direction }) {
      const { x, y } = direction
      if (x > 0) {
        this.direction.x = 1
      } else if (x < 0) {
        this.direction.x = -1
      }
      if (y > 0) {
        this.direction.y = 1
      } else if (y < 0) {
        this.direction.y = -1
      }

      TweenMax.to(this.$refs.ball, 0.5, {
        direction: this.direction
      })
    }
  }
}
</script>

In the above code, we check the direction in which the underlying layer is moving and change the direction if necessary. We then use the TweenMax.to method to update the value of the ball's direction prop. The TweenMax library makes using TweenMax in Vue applications very convenient. This library can be installed via npm.

Summary

In this article, we learned how to create a 3D ball in a Vue application using the vue-touch-3d-ball library, and learned how to change the rotation direction of the ball . If you want to know more about Vue.js, please refer to its official documentation. If you have any questions or suggestions, please let us know in the comments below.

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