using FlowChartModule.绘制模块;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Threading;
using Prism.Mvvm;

namespace FlowChartModule.ViewModels
{
    public class BezierCurveViewModel :BindableBase
    {
        private BezierCurveModel _curveModel;
        private Random _random = new Random();
        private DispatcherTimer _timer;

        public BezierCurveModel CurveModel
        {
            get { return _curveModel; }
            set
            {
                if ( _curveModel != value )
                {
                    _curveModel = value;

                    SetProperty(ref _curveModel, value);
                }
            }
        }

        public BezierCurveViewModel()
        {
            InitializeCurveModel();
            InitializeTimer();
        }

        private void InitializeCurveModel()
        {
            CurveModel = new BezierCurveModel
            {
                StartPoint = new Point(50, 100),
                EndPoint = new Point(350, 100),
                ControlPoint1 = new Point(_random.Next(100, 200), _random.Next(50, 200)),
                ControlPoint2 = new Point(_random.Next(200, 300), _random.Next(50, 200))
            };
        }

        private void InitializeTimer()
        {
            //_timer = new DispatcherTimer();
            //_timer.Interval = TimeSpan.FromSeconds(1);
            //_timer.Tick += Timer_Tick;
            //_timer.Start();
        }

        private void Timer_Tick(object sender, EventArgs e)
        {
            UpdateCurveModel();
        }

        private void UpdateCurveModel()
        {
            CurveModel = new BezierCurveModel
            {
                StartPoint = new Point(50, 100),
                EndPoint = new Point(350, 100),
                ControlPoint1 = new Point(_random.Next(100, 200), _random.Next(50, 200)),
                ControlPoint2 = new Point(_random.Next(200, 300), _random.Next(50, 200))
            };
        }

    }
}