import * as React from 'react' ; type Geometry = { ref : { current ? : any ; } ; width : { current ? : number ; } ; height : { current ? : number ; } ; minX : { current ? : number ; } ; midX : { current ? : number ; } ; maxX : { current ? : number ; } ; minY : { current ? : number ; } ; midY : { current ? : number ; } ; maxY : { current ? : number ; } ; } ; export function useGeometry ( ref ? ) { const localRef = React . useRef ( ) ; const width = React . useRef ( 0 ) ; const height = React . useRef ( 0 ) ; const minX = React . useRef ( 0 ) ; const midX = React . useRef ( 0 ) ; const maxX = React . useRef ( 0 ) ; const minY = React . useRef ( 0 ) ; const midY = React . useRef ( 0 ) ; const maxY = React . useRef ( 0 ) ; React . useLayoutEffect ( ( ) => { const bounds = ( ref || localRef ) . current . getBoundingClientRect ( ) ; width . current = bounds . width ; height . current = bounds . height ; minX . current = bounds . left ; midX . current = bounds . left + bounds . width / 2 ; maxX . current = bounds . right ; minY . current = bounds . top ; midY . current = bounds . top + bounds . height / 2 ; maxY . current = bounds . bottom ; } ) ; return { ref : ref || localRef , width , height , minX , midX , maxX , minY , midY , maxY , } ; }