Created
November 28, 2016 15:59
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| /* @flow */ | |
| import React from 'react'; | |
| import { pure } from 'recompose'; | |
| import styles from './Clock.css'; | |
| type props = { | |
| time: string, | |
| size: number, | |
| }; | |
| function Clock({time, size=17}: props) { | |
| const viewBox = [0, 0, size, size].join(' '); | |
| const [hours, minutes] = time.split(':').map(str => parseInt(str, 10)); | |
| const center = size / 2; | |
| const radius = (size / 2) - 1; | |
| const hourAngle = (hours * 2 * Math.PI / 12); | |
| const minuteAngle = (minutes * 2 * Math.PI / 60); | |
| const x1 = center + (radius / 2) * Math.sin(hourAngle); | |
| const y1 = center - (radius / 2) * Math.cos(hourAngle); | |
| const x2 = center; | |
| const y2 = center; | |
| const x3 = center + (radius - 3) * Math.sin(minuteAngle); | |
| const y3 = center - (radius - 3) * Math.cos(minuteAngle); | |
| const points = `${x1},${y1} ${x2},${y2} ${x3},${y3}`; | |
| return ( | |
| <svg className={styles.root} viewBox={viewBox} width={size} height={size}> | |
| <circle | |
| cx={center} | |
| cy={center} | |
| r={radius} | |
| strokeWidth="1" | |
| fill="none" /> | |
| <polyline | |
| points={points} | |
| fill="none" | |
| strokeLinecap="round" | |
| strokeWidth="1" /> | |
| </svg> | |
| ); | |
| } | |
| export default pure(Clock); |
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