All files / lib/util linear-scale.js

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export default class LinearScale {
  constructor(domain, range) {
    this.domain = domain
    this.range = range
  }
 
  compute(val) {
    const { domain: d, range: r } = this
    return ((val - d[0]) / (d[1] - d[0])) * (r[1] - r[0]) + r[0]
  }
 
  invert(val) {
    const { domain: d, range: r } = this
    return ((val - r[0]) / (r[1] - r[0])) * (d[1] - d[0]) + d[0]
  }
}