import { useMemo } from 'react' ; import { useAxisSystemContext } from '../shared/AxisSystemContext' ; const CAMERA_FAR = 1000 ; export function useBufferAttributes ( abscissas , ordinates , data , dataToColorScale ) { const { abscissaScale , ordinateScale } = useAxisSystemContext ( ) ; return useMemo ( ( ) => { const position = new Float32Array ( 3 * data . length ) ; const color = new Uint8Array ( 3 * data . length ) ; data . forEach ( ( val , index ) => { color . set ( dataToColorScale ( val ) , 3 * index ) ; const x = abscissaScale ( abscissas [ index ] ) ; const y = ordinateScale ( ordinates [ index ] ) ; const hasFiniteCoords = Number . isFinite ( x ) && Number . isFinite ( y ) ; position . set ( [ x , y , hasFiniteCoords ? 0 : CAMERA_FAR ] , 3 * index ) ; } ) ; return { position , color } ; } , [ abscissaScale , abscissas , dataToColorScale , data , ordinateScale , ordinates , ] ) ; }