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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 { magnitude3D } from "./magnitude-3d.js"; /** * Creates a vector pointing from the first vector to the second vector, maintaining the magnitude of the first vector. * @param {ArrayVector3D} xyz1 - First vector as `[x, y, z]` (source direction) * @param {ArrayVector3D} xyz2 - Second vector as `[x, y, z]` (target direction) * @param {number} [m1] - Optional current magnitude of the first vector (default: `magnitude3D(xyz1)`) * @param {number} [m2] - Optional current magnitude of the second vector (default: `magnitude3D(xyz2)`) * @returns {ArrayVector3D} The look-at vector */ export const lookAt3D = (xyz1, xyz2, m1 = magnitude3D(xyz1), m2 = magnitude3D(xyz2)) => [(xyz2[0] / m2) * m1, (xyz2[1] / m2) * m1, (xyz2[2] / m2) * m1];