percentdim

percentDim calculates the percentage volume difference between two N-dimensional arrays by comparing their total product (i.e., volume). It’s atomic, pure, and performant.

Details

• Works with any number of dimensions – 2D, 3D, 4D, and beyond.
• Computes relative percentage – How much dimsA is of dimsB in a 0-100% scale.
• Pure & atomic function – Ideal for composable utility pipelines.
• No dependencies – Lightweight and efficient.

Install

npm install percentdim

Usage

import percentDim from 'percentdim';

const dimsA = [1920, 1080];
const dimsB = [3840, 2160];

// ✅ Compute how much dimsA is of dimsB
console.log(percentDim(dimsA, dimsB));
// 25 (i.e., dimsA is 25% of dimsB)

// ✅ 3D Example
console.log(percentDim([100, 100, 100], [200, 200, 200]));
// 12.5 (i.e., first box is 12.5% of the second)

🔧 API

percentDim(dimsA: number[], dimsB: number[]): number

Calculates the percentage of dimsA relative to dimsB.

• dimsA – The first set of dimensions.
• dimsB – The second set of dimensions (must have the same length).
• Returns – A percentage value (0-100).

⚠️ Errors

Throws an error if:

• The two arrays don’t have the same length.

Cheatsheet Patterns

Convert Percentage to Decimal

const percent = percentDim([1920, 1080], [3840, 2160]); // 25
const decimal = percent / 100;
console.log(decimal); // 0.25

Related Packages

• https://github.com/alexstevovich/capdim – Caps total volume while keeping proportions.
• https://github.com/alexstevovich/fitdim – Scales an axis to a fixed value while preserving proportions.
• https://github.com/alexstevovich/normalizedim – Normalizes one axis while keeping proportions.

These links might be suffixed with "-node" in the future if conflicts arise.

Links

Development Homepage

https://github.com/alexstevovich/percentdim

This link might be suffixed with "-node" in the future if conflicts arise.

License

Licensed under the Apache License 2.0.