fix: Speedy predictions

Signed-off-by: Mark Tolmacs <mark@lazycat.hu>
2026-04-03 16:09:31 +00:00
parent a0489c459c
commit 5aa16c3052
10 changed files with 403 additions and 75 deletions
@@ -158,3 +158,14 @@ export const vectorNormalize = (v: Vector): Vector => {
 * Calculate the right-hand normal of the vector.
 */
 export const vectorNormal = (v: Vector): Vector => vector(v[1], -v[0]);
+
+/**
+ * Scalar projection of vector v onto normal.
+ *
+ * @param v
+ * @param normal
+ * @returns
+ */
+export const vectorReflect = (v: Vector, normal: Vector): Vector => {
+  return vectorSubtract(v, vectorScale(normal, 2 * vectorDot(v, normal)));
+};