[](https://www.npmjs.com/package/@polymer/paper-ripple) [](https://travis-ci.org/PolymerElements/paper-ripple) [](https://webcomponents.org/element/@polymer/paper-ripple) ## <paper-ripple> `paper-ripple` provides a visual effect that other paper elements can use to simulate a rippling effect emanating from the point of contact. The effect can be visualized as a concentric circle with motion. See: [Documentation](https://www.webcomponents.org/element/@polymer/paper-ripple), [Demo](https://www.webcomponents.org/element/@polymer/paper-ripple/demo/demo/index.html). ## Usage ### Installation ``` npm install --save @polymer/paper-ripple ``` ### In an html file ```html ``` ### In a Polymer 3 element ```js import {PolymerElement, html} from '@polymer/polymer'; import '@polymer/paper-ripple/paper-ripple.js'; class SampleElement extends PolymerElement { static get template() { return html` `; } } customElements.define('sample-element', SampleElement); ``` ## Contributing If you want to send a PR to this element, here are the instructions for running the tests and demo locally: ### Installation ```sh git clone https://github.com/PolymerElements/paper-ripple cd paper-ripple npm install npm install -g polymer-cli ``` ### Running the demo locally ```sh polymer serve --npm open http://127.0.0.1:/demo/ ``` ### Running the tests ```sh polymer test --npm ```