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@fimbul-works/vec

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A comprehensive TypeScript vector math library providing 2D, 3D, and 4D vector operations with a focus on performance and type safety.

github.com/fimbul-works/vec

fimbul-works/vec

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import { magnitude4D } from "./magnitude-4d.js"; /** * Makes a 4D vector point towards another vector. * @param {ArrayVector4D} xyzw1 - First vector as `[x, y, z, w]` * @param {ArrayVector4D} xyzw2 - Second vector as `[x, y, z, w]` (target to look at) * @param {number} [m1] - Optional current magnitude of the first vector (default: `magnitude4D(xyzw1)`) * @param {number} [m2] - Optional current magnitude of the second vector (default: `magnitude4D(xyzw2)`) * @returns {number} Vector pointing at the target with the magnitude of xyzw1 */ export const lookAt4D = (xyzw1, xyzw2, m1 = magnitude4D(xyzw1), m2 = magnitude4D(xyzw2)) => [(xyzw2[0] / m2) * m1, (xyzw2[1] / m2) * m1, (xyzw2[2] / m2) * m1, (xyzw2[3] / m2) * m1];