Function scaleValue

Multiplies each step by the start value.

Useful when using array steps with custom percentages.

For example:

const spacingControl = new ControlVar(Unit.rem, 1)
const spacingSteps = [0, 1, 2, 3]
const spacing = new InterpolatedVars("spacing", Unit.rem, [spacingControl], {
steps: spacingSteps,
interpolator: createNumericalInterpolator(scaleValue),
})
// spacing values are now [0rem, 1rem, 2rem, 3rem]
spacingControl.set(2)
// scales to [0rem, 2rem, 4rem, 6rem]