@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.
22 lines (21 loc) • 741 B
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.reflect4D = void 0;
const dot_4d_js_1 = require("./dot-4d.js");
/**
* Reflects a 4D vector across a normal vector.
* The normal vector should be normalized (unit length).
* @param {ArrayVector4D} xyzw - Vector as `[x, y, z, w]`
* @param {ArrayVector4D} normal - Normal vector (must be normalized)
* @returns {ArrayVector4D} The reflected vector
*/
const reflect4D = (xyzw, normal) => {
const dot = (0, dot_4d_js_1.dot4D)(xyzw, normal);
return [
xyzw[0] - 2 * dot * normal[0],
xyzw[1] - 2 * dot * normal[1],
xyzw[2] - 2 * dot * normal[2],
xyzw[3] - 2 * dot * normal[3],
];
};
exports.reflect4D = reflect4D;