chart

DoctorApp/Models/Chart.cs

@@ -0,0 +1,127 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Diagnostics;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+using LiveCharts;
+using LiveCharts.Configurations;
+using Util;
+
+namespace DoctorApp.Models
+{
+    class Chart : ObservableObject,INotifyPropertyChanged
+    {
+
+        private double _axisMax;
+        private double _axisMin;
+        private double _trend;
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        public ChartValues<MeasureModel> ChartValues { get; set; }
+        public Func<double, string> DateTimeFormatter { get; set; }
+
+        public PatientInfo PatientInfo { get; set; }
+        public double AxisStep { get; set; }
+        public double AxisUnit { get; set; }
+
+        public double AxisMax
+        {
+            get { return _axisMax; }
+            set
+            {
+                _axisMax = value;
+                OnPropertyChanged("AxisMax");
+            }
+        }
+
+        public double AxisMin
+        {
+            get { return _axisMin; }
+            set
+            {
+                _axisMin = value;
+                OnPropertyChanged("AxisMin");
+            }
+        }
+
+        public bool IsReading { get; set; }
+
+
+
+
+        public Chart(PatientInfo patientInfo)
+        {
+            var mapper = Mappers.Xy<MeasureModel>()
+            .X(model => model.DateTime.Ticks)
+            .Y(model => model.Value);
+
+            Charting.For<MeasureModel>(mapper);
+
+            ChartValues = new ChartValues<MeasureModel>();
+
+            DateTimeFormatter = value => new DateTime((long)value).ToString("mm:ss");
+
+            AxisStep = TimeSpan.FromSeconds(1).Ticks;
+
+            AxisUnit = TimeSpan.TicksPerSecond;
+
+            SetAxisLimits(DateTime.Now);
+
+            IsReading = true;
+
+            ChartValues.Add(new MeasureModel
+            {
+                DateTime = DateTime.Now,
+                Value = 8
+            });
+
+        }
+
+        private void SetAxisLimits(DateTime now)
+        {
+            AxisMax = now.Ticks + TimeSpan.FromSeconds(1).Ticks; // lets force the axis to be 1 second ahead
+            AxisMin = now.Ticks - TimeSpan.FromSeconds(8).Ticks; // and 8 seconds behind
+        }
+
+        protected virtual void OnPropertyChanged(string propertyName = null)
+        {
+            if (PropertyChanged != null)
+                PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+        
+        public void NewValue(double value)
+        {
+            var now = DateTime.Now;
+            _trend = value;
+            ChartValues.Add(new MeasureModel
+            {
+                DateTime = now,
+                Value = _trend
+            });
+
+            SetAxisLimits(now);
+
+            if (ChartValues.Count > 150) ChartValues.RemoveAt(0);
+        }
+
+        public void Clear()
+        {
+            Debug.WriteLine("clear");
+            ChartValues.Clear();
+        }
+
+
+
+    }
+
+    public class MeasureModel
+    {
+        public DateTime DateTime { get; set; }
+        public double Value { get; set; }
+    }
+}

DoctorApp/Models/PatientInfo.cs

@@ -10,11 +10,11 @@ namespace DoctorApp.Models
 
         public string Status { get; set; }
 
-        public int Speed { get; set; }
+        public double Speed { get; set; }
 
         public int BPM { get; set; }
 
-        public int Resistance { get; set; }
+        public float Resistance { get; set; }
         public int Acc_Power { get; set; }
 
         public int Curr_Power { get; set; }