import { Cartesian , Pixels , Ratio } from '../common/geometry' ; internal export type ArrayIndex = number ; internal export interface ScaleCompression { bounds : ArrayIndex [ ] ; scaleMultiplier : Ratio ; } internal export const screenspaceMarkerScaleCompressor = ( domainPositions , itemWidths , outerWidth ) : ScaleCompression => { const result = { bounds : [ ] , scaleMultiplier : Infinity } ; const itemCount = Math . min ( domainPositions . length , itemWidths . length ) ; for ( let left = 0 ; left < itemCount ; left ++ ) { for ( let right = 0 ; right < itemCount ; right ++ ) { if ( domainPositions [ left ] > domainPositions [ right ] ) continue ; const range = outerWidth - itemWidths [ left ] / 2 - itemWidths [ right ] / 2 ; const domain = domainPositions [ right ] - domainPositions [ left ] ; const scaleMultiplier = range / domain ; if ( scaleMultiplier < result . scaleMultiplier || Number . isNaN ( scaleMultiplier ) ) { result . bounds [ 0 ] = left ; result . bounds [ 1 ] = right ; result . scaleMultiplier = scaleMultiplier ; } } } return result ; } ;