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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 { magnitude2D } from "./magnitude-2d.js"; /** * Calculates the 2D vector angle of a vector pointing at another. * @param {ArrayVector2D} xy1 - First vector as `[x, y]` * @param {ArrayVector2D} xy2 - Second vector as `[x, y]` (target to look at) * @param {number} [m1] - Optional current magnitude of the first vector (default: magnitude2D(xy1)) * @param {number} [m2] - Optional current magnitude of the second vector (default: magnitude2D(xy2)) * @returns {ArrayVector2D} Vector pointing at the target with the magnitude of xy1 */ export const lookAt2D = (xy1, xy2, m1 = magnitude2D(xy1), m2 = magnitude2D(xy2)) => [(xy2[0] / m2) * m1, (xy2[1] / m2) * m1];