moeka-project/.agents/skills/vueuse-functions/references/useProjection.md

category, related

category	related
@Math	createGenericProjection

useProjection

Reactive numeric projection from one domain to another.

Usage

import { useProjection } from '@vueuse/math'

const input = ref(0)
const projected = useProjection(input, [0, 10], [0, 100])

input.value = 5 // projected.value === 50
input.value = 10 // projected.value === 100

Type Declarations

/**
 * Reactive numeric projection from one domain to another.
 *
 * @see https://vueuse.org/useProjection
 *
 * @__NO_SIDE_EFFECTS__
 */
export declare function useProjection(
  input: MaybeRefOrGetter<number>,
  fromDomain: MaybeRefOrGetter<readonly [number, number]>,
  toDomain: MaybeRefOrGetter<readonly [number, number]>,
  projector?: ProjectorFunction<number, number>,
): ComputedRef<number>