using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public abstract class OpticalSurface2D : MonoBehaviour
{
    [Serializable]
    public struct Line {
        public Vector2 P1;
        public Vector2 P2;
    }

    public Line[] Shape;



    public abstract bool Raycast(Ray2D ray, ref RaycastMath.RaycastResult2D result);

    public static Line[] PointsToLines(Vector2[] points, bool closed) {
        Line[] result = new Line[points.Length - (closed ? 0 : 1)];

        for (int i = 0; i < points.Length - 1; i++) {
            result[i] = new Line() { P1 = points[i], P2 = points[i + 1] };
        }

        if (closed) {
            result[result.Length - 1] = new Line() { P1 = result[result.Length - 2].P2, P2 = result[0].P1 };
        }

        return result;
    }


    private void OnDrawGizmos() {
        if (Shape == null) return;
        if (Shape.Length < 1) return;

        Gizmos.matrix = transform.localToWorldMatrix;
        for (int i = 0; i < Shape.Length; i++) {

            Gizmos.DrawLine(Shape[i].P1, Shape[i].P2);
        }
        Gizmos.matrix = Matrix4x4.identity;
    }
}