Tools for calculating aspect ratios

Calculates the aspect ratio from the provided width and height.

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Automatically adjusts the width or height based on the provided ratio.

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To find the aspect ratio, the key is to find the GCD (Greatest Common Divisor).

This can be done with a simple recursive function:

```
export const calculateGcd = (a: number, b: number): number =>
b === 0 ? a : calculateGcd(b, a % b);
```

Next, the GCD can be used to calculate the ratio:

```
const calculateAspectRatio = (width: number, height: number): string => {
const gcd = calculateGcd(width, height);
const x = width / gcd;
const y = height / gcd;
return `${x}:${y}`;
};
```