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

public class FenceInput : MonoBehaviour {

  public GameObject FencePostPrefab;



	// Update is called once per frame
	void Update () {

    Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);

    RaycastHit hit;


    if(Physics.Raycast(ray, out hit))
    {
      FencePostPrefab.transform.position = ConvertWorldToPlanePoint(hit);
    }
	}

  private Vector2 GetPlaneWidthHeight(GameObject plane)
  {
    Mesh planeMesh = plane.GetComponent<MeshFilter>().mesh;

    Bounds bounds = planeMesh.bounds;
    float boundsX = plane.transform.localScale.x * bounds.size.x;
    float boundsZ = plane.transform.localScale.z * bounds.size.z;

    return new Vector2(boundsX, boundsZ);

  }

  private Vector3 ConvertWorldToPlanePoint(RaycastHit hit)
  {
    Vector2 planeSize = GetPlaneWidthHeight(hit.transform.gameObject);

    float width = planeSize.x / 10;
    float height = planeSize.y / 10;

    int x = ((int)(hit.point.x / 10)) * 10;
    int z = ((int)(hit.point.z / 10)) * 10;



    return new Vector3(
      Mathf.Round(hit.point.x * 10)
      ,hit.point.y,
      Mathf.Round(hit.point.z * 10));
  }
}