smart-bow-infrared/Assets/InfraredProject/WebCamera/Script/ZIM/ZIMUnity/ZIMMath.cs

using o0.Geometry2D.Float;
using System;
using UnityEngine;

namespace ZIM.Unity
{
    public static partial class ZIMMath
    {
        // Projects a vector onto another vector.
        public static Vector2 Project(this Vector2 vector, Vector2 onNormal)
        {
            float dotProduct = Vector2.Dot(vector, onNormal);
            float magnitudeSquared = onNormal.sqrMagnitude;
            if (magnitudeSquared < Mathf.Epsilon)
                return Vector2.zero;
            return (dotProduct / magnitudeSquared) * onNormal;
        }

        public static float LengthManhattan(this Vector2 v) => Math.Abs(v.x) + Math.Abs(v.y);
        public static double LengthManhattan(Vector2 v1, Vector2 v2) => (v1 - v2).LengthManhattan();


    }
}