using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;

namespace StgSharp_Geometry
{
    internal class PointOnLine : Point
    {
        private Point _beginPoint;

        public Point BeginPoint
        {
            get { return _beginPoint; }
            set { _beginPoint = value; }
        }

        private Point _endPoint;

        public Point EndPoint
        {
            get { return _endPoint; }
            set { _endPoint = value; }
        }

        private float _angle;

        public float Angle
        {
            get { return _angle; }
            set { _angle = value; }
        }

        

        private float rate;

        public PointOnLine(Point beginPoint,Point endPoint,float rate,int number)
        {
            _beginPoint = beginPoint;
            _endPoint = endPoint;

            _angle = (float)(Math.Atan2(endPoint.Y-beginPoint.Y,endPoint.X-beginPoint.Y));

            rate = rate * number;
            this.Y = beginPoint.Y + rate * (endPoint.Y - beginPoint.Y);
            this.X = beginPoint.X + rate * (endPoint.X - beginPoint.X);
        }

        public override void OnRender()
        {
            _angle = (float)(Math.Atan2(_endPoint.Y - _beginPoint.Y, _endPoint.X - _beginPoint.Y));

            this.Y = _beginPoint.Y + rate * (_endPoint.Y - _beginPoint.Y);
            this.X = _beginPoint.X + rate * (_endPoint.X - _beginPoint.X);
        }
    }
}