using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnityEngine;
using Wing.Utils;

namespace Wing.Gizmos
{
    public class AngleSnap : SnapBase
    {
        public Vector3 Center = Vector3.zero;

        private float mAngle = 0;
        public float CurrentAngle
        {
            get
            {
                return mAngle;
            }
        }
        public AngleSnap()
        {
            Precision = 15;
        }

        protected override void CalcTolerance()
        {
            mTolerance = 0.2f * Precision;
        }

        public override bool Snap(Vector3 inVal, ref Vector3 outVal, bool force = false)
        {
            if (!Enable)
            {
                return false;
            }

            Vector3 dir = inVal.normalized;
            float angle = GemetryHelper.VectorAngle(Vector3.right, dir);

            mAngle = GemetryHelper.ValueMod(angle, Precision);

            if (force || Mathf.Abs(angle - mAngle) <= Precision)
            {
                outVal = Quaternion.Euler(0, mAngle, 0) * Vector3.right;
                return true;
            }
            else
            {
                return false;
            }
        }
    }
}