midpoint

Calculates the midpoint between two pairs of (x,y) points.

Destructure the array to get x1, y1, x2 and y2, calculate the midpoint for each dimension by dividing the sum of the two endpoints by 2.

typescript

type IPoint = [number, number];
const midpoint = ([x1, y1]: IPoint, [x2, y2]: IPoint) => [
  (x1 + x2) / 2,
  (y1 + y2) / 2,
];

typescript

midpoint([2, 2], [4, 4]); // [3, 3]
midpoint([4, 4], [6, 6]); // [5, 5]
midpoint([1, 3], [2, 4]); // [1.5, 3.5]