using System;

namespace Syntriax.Engine.Physics2D.Primitives;

public record Vector2D(float X, float Y)
{
    public static Vector2D operator +(Vector2D left, Vector2D right) => new(left.X + right.X, left.Y + right.Y);
    public static Vector2D operator -(Vector2D left, Vector2D right) => new(left.X - right.X, left.Y - right.Y);
    public static Vector2D operator *(Vector2D point, float value) => new(point.X * value, point.Y * value);
    public static Vector2D operator /(Vector2D point, float value) => new(point.X / value, point.Y / value);

    public static float Length(Vector2D point) => MathF.Sqrt(LengthSqr(point));
    public static float LengthSqr(Vector2D point) => point.X * point.X + point.Y * point.Y;

    public static Vector2D Normalize(Vector2D point) => point / Length(point);
    public static Vector2D FromTo(Vector2D from, Vector2D to) => to - from;

    public static float Cross(Vector2D left, Vector2D right) => left.X * right.Y - left.Y * right.X;
    public static float Angle(Vector2D left, Vector2D right) => MathF.Acos(Dot(left, right) / (Length(left) * Length(right)));
    public static float Dot(Vector2D left, Vector2D right) => left.X * right.X + left.Y * right.Y;
}