51 lines
1.5 KiB
TypeScript
51 lines
1.5 KiB
TypeScript
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import type { DisplaySeries, DisplayTrack } from './types'
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export type WaveformYDomain = [number, number]
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export function normalizeYDomain(
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domain: readonly [number, number] | undefined,
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): WaveformYDomain | undefined {
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if (
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!domain ||
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!Number.isFinite(domain[0]) ||
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!Number.isFinite(domain[1]) ||
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domain[0] === domain[1]
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) {
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return undefined
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}
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return domain[0] < domain[1] ? [domain[0], domain[1]] : [domain[1], domain[0]]
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}
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export function resolveTrackFixedYDomain(
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track: Pick<DisplayTrack, 'id'>,
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yDomains?: Record<string, WaveformYDomain>,
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): WaveformYDomain | undefined {
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return normalizeYDomain(yDomains?.[track.id])
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}
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export function resolveSeriesFixedYDomain(
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series: Pick<DisplaySeries, 'id'>,
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yDomain?: WaveformYDomain,
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yDomains?: Record<string, WaveformYDomain>,
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): WaveformYDomain | undefined {
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return normalizeYDomain(yDomains?.[series.id]) ?? normalizeYDomain(yDomain)
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}
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export function hasFixedYDomainForTrack(
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track: Pick<DisplayTrack, 'id' | 'visibleSeries'>,
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yDomain?: WaveformYDomain,
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yDomains?: Record<string, WaveformYDomain>,
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): boolean {
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return Boolean(
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resolveTrackFixedYDomain(track, yDomains) ||
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track.visibleSeries.some((series) => resolveSeriesFixedYDomain(series, yDomain, yDomains)),
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)
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}
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export function mergeYDomains(domains: readonly WaveformYDomain[]): WaveformYDomain {
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return [
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Math.min(...domains.map((domain) => domain[0])),
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Math.max(...domains.map((domain) => domain[1])),
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]
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}
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