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

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

        public GridSnap()
        {
            Precision = 1;
        }

        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 position = inVal;
            Vector3 offset = position - Center;
            Vector3 dp = GemetryHelper.Vector3Mod(offset, Precision);

            Vector3 df =  position - dp;
            df.x = Mathf.Abs(df.x);
            df.y = Mathf.Abs(df.y);
            df.z = Mathf.Abs(df.z);

            float max = Mathf.Max(df.x, df.y, df.z);

            if (force || max <= mTolerance)
            {
                outVal = dp;

                return true;
            }
            else
            {
                return false;
            }
        }
    }
}