React - Mousemove background

index.html

<div id="root"></div>

react-mousemove-background.markdown

React - Mousemove background

A Pen by Chase Harrison on CodePen.

License.

script.js

// Regular Function
function transform(offset) {
  const cos = Math.cos(offset);
  const sin = Math.sin(offset);
  return { transform: `matrix3d(${sin}, ${-cos}, ${sin}, 0, ${-cos}, ${sin}, 0, 0, 0, ${cos}, ${cos}, ${sin}, 0, 0, 0, 1)` };
}


//------------Component------------
class App extends React.Component {
// --State--
  state = {styleOne: {}, styleTwo: {} };
// --Events--
onMouseMove = (e) => {
  this.setState({
    styleOne: transform(-e.clientX / e.clientY),
    styleTwo: transform(e.clientX / e.clientY),
    styleThree: transform(e.clientY / e.clientX+1000),
    styleFour: transform(e.clientY / e.clientX*2)
  })
}

// --Render--
  render(){
    return (
      <div onMouseMove={this.onMouseMove}>
        <div className="panel" style={this.state.styleOne}></div>
        <div className="panel" style={this.state.styleTwo}></div>
        <div className="panel" style={this.state.styleThree}></div>
        <div className="panel" style={this.state.styleFour}></div>
      </div>
    )
  }
}

// React DOM Render Method
ReactDOM.render(
  <App />, document.querySelector("#root")
)

scripts

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.7.0/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.7.0/umd/react-dom.production.min.js"></script>

style.css

body {overflow: hidden;}

div {height: 100vh; width: 100vw;}

.panel {position: absolute; border: 10px dashed #000; background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 80 80" width="80" height="80"%3E%3Cpath fill="%239C92AC" fill-opacity="0.4" d="M14 16H9v-2h5V9.87a4 4 0 1 1 2 0V14h5v2h-5v15.95A10 10 0 0 0 23.66 27l-3.46-2 8.2-2.2-2.9 5a12 12 0 0 1-21 0l-2.89-5 8.2 2.2-3.47 2A10 10 0 0 0 14 31.95V16zm40 40h-5v-2h5v-4.13a4 4 0 1 1 2 0V54h5v2h-5v15.95A10 10 0 0 0 63.66 67l-3.47-2 8.2-2.2-2.88 5a12 12 0 0 1-21.02 0l-2.88-5 8.2 2.2-3.47 2A10 10 0 0 0 54 71.95V56zm-39 6a2 2 0 1 1 0-4 2 2 0 0 1 0 4zm40-40a2 2 0 1 1 0-4 2 2 0 0 1 0 4zM15 8a2 2 0 1 0 0-4 2 2 0 0 0 0 4zm40 40a2 2 0 1 0 0-4 2 2 0 0 0 0 4z"%3E%3C/path%3E%3C/svg%3E');}

.panel:first-of-type {box-shadow: 0 0 200px yellow;}
.panel:nth-of-type(2) {box-shadow: 0 0 200px red;}
.panel:nth-of-type(3) {box-shadow: 0 0 200px green;}
.panel:nth-of-type(4) {box-shadow: 0 0 200px blue;}