react-polyline

Provide a React component to draw a polyline.

Underneath, it's only using classic <div>s that it rotates and positions where they need to be.

Why

Sometimes, you want to draw some shapes in your page, not using fancy stuff. <div>'s are not a fancy stuff but requires some mathematics to handle the lines position and rotation properly from a list of coordinates.

Install

npm install --save react-polyline

Props

You need to provide an array of coordinates. Each coordinate is composed of 2 values x and y. Each pair of coordinates will be linked by a line.

static propTypes = {
  coordinates: React.PropTypes.arrayOf(React.PropTypes.shape({
    x: React.PropTypes.number.isRequired,
    y: React.PropTypes.number.isRequired
  }),
  style: React.PropTypes.string,
  closed: React.PropTypes.bool
};

The coordinates count must be greater than one in order to draw at least one line.

style is optional and is the css style you want to apply on the line. The default is 1px solid black.

closed to close the line linking the last and first points.

Usage

<Polyline
  coordinates={[
    {x: 10, y: 20}
    {x: 10, y: 100},
    {x: 10, y: 200}
  ]},
  style="5px solid orange"
  closed={true}
/>

An octogon :