using UnityEngine;

namespace Models
{
    /// <summary>
    /// 捕捉点之间的连接线
    /// </summary>
    public class Bond
    {
        protected readonly GameObject Start;
        protected readonly GameObject End;
        private readonly GameObject _bond;

        public Quaternion Rotation => _bond.transform.rotation;
        
        public Bond(GameObject start,GameObject end,float scale)
        {
            Start = start;
            End = end;
            
            _bond = GameObject.CreatePrimitive(PrimitiveType.Cylinder);
            
            _bond.transform.localScale = new Vector3(scale/2, scale/2, scale/2);

            //这里可以设置材质，具体自己设置
            _bond.GetComponent<Renderer>().material.color = Color.cyan;
        }
        
        
        public void UpdateBond()
        {
            var startPos = Start.transform.position;
            var endPos = End.transform.position;
            var rightPosition = (startPos + endPos) / 2;
            var rightRotation = endPos - startPos;
            var halfLength = Vector3.Distance(startPos, endPos) / 2;
            var thickness = 0.1f;//线的粗细
 
            //创建圆柱体
            //bond.gameObject.transform.parent = transform;
            _bond.transform.position = rightPosition;   
            _bond.transform.rotation = Quaternion.FromToRotation(Vector3.up, rightRotation);
            _bond.transform.localScale = new Vector3(thickness, halfLength, thickness);
        }
    }
}