using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Threading;
using RealTimeGraphEx.Models;
using RealTimeGraphEx.DataSeries;
using RealTimeGraphEx.Controllers;
using System.Runtime.ExceptionServices;
using RealTimeGraphEx.DX2D;
using RealTimeGraphEx.FastGraphs;
using System.Windows.Controls;
namespace RealTimeGraphEx.DirectXGraphs
{
/// <summary>
/// Represents a real-time graph with a single scrollable line.
/// </summary>
public class RealTimeGraphExDirectXLineErase : RealTimeGraphExDirectXLineScroll
{
#region Cross Thread Fields
protected Brush _markerBrush;
protected bool _showMarker;
protected double _markerStrokeWidth;
protected int _currentReplaceIndex;
#endregion
#region Properties
public Brush MarkerBrush
{
get { return (Brush)GetValue(MarkerBrushProperty); }
set { SetValue(MarkerBrushProperty, value); }
}
public static readonly DependencyProperty MarkerBrushProperty =
DependencyProperty.Register("MarkerBrush", typeof(Brush), typeof(RealTimeGraphExDirectXLineErase), new PropertyMetadata(Brushes.Red, new PropertyChangedCallback(CrossModelChanged)));
public bool ShowMarker
{
get { return (bool)GetValue(ShowMarkerProperty); }
set { SetValue(ShowMarkerProperty, value); }
}
public static readonly DependencyProperty ShowMarkerProperty =
DependencyProperty.Register("ShowMarker", typeof(bool), typeof(RealTimeGraphExDirectXLineErase), new PropertyMetadata(true, new PropertyChangedCallback(CrossModelChanged)));
public double MarkerStrokeWidth
{
get { return (double)GetValue(MarkerStrokeWidthProperty); }
set { SetValue(MarkerStrokeWidthProperty, value); }
}
public static readonly DependencyProperty MarkerStrokeWidthProperty =
DependencyProperty.Register("MarkerStrokeWidth", typeof(double), typeof(RealTimeGraphExDirectXLineErase), new PropertyMetadata(1.0, new PropertyChangedCallback(CrossModelChanged)));
#endregion
#region Constructor
public RealTimeGraphExDirectXLineErase()
: base()
{
}
#endregion
#region Override Methods
protected override void Initialize()
{
base.Initialize();
dxGraph = new DXGraphSurfaceSingleErase() { HorizontalAlignment = System.Windows.HorizontalAlignment.Left, VerticalAlignment = System.Windows.VerticalAlignment.Stretch };
gridMain.Children.Remove(img);
if (!gridMain.Children.Contains(dxGraph))
{
gridMain.Children.Add(dxGraph);
}
dxGraph.IsHitTestVisible = false;
Grid.SetColumnSpan(dxGraph, 3);
}
protected override void OnSetCrossThreadFields()
{
base.OnSetCrossThreadFields();
this.Dispatcher.Invoke(() =>
{
_markerBrush = MarkerBrush;
_markerStrokeWidth = MarkerStrokeWidth;
_showMarker = ShowMarker;
}, DispatcherPriority.Send);
}
protected override void OnClearGraph()
{
base.OnClearGraph();
_currentReplaceIndex = 0;
}
protected internal override void OnRenderGraph()
{
if (_graphController.dataSeries != null && _graphController.dataSeries.Points != null && _graphController.dataSeries.Points.Count > 0 && _width > 1 && _height > 1)
{
var points = _graphController.dataSeries.Points.GetAndClearAllPoints();
if (!_isPaused)
{
for (int i = 0; i < points.Count; i++)
{
double value = points[i];
NormalizeValue(ref value);
if (graphPolygon.Count > _maxPoints)
{
graphPolygon.Replace(value, _currentReplaceIndex++);
}
else
{
graphPolygon.Add(value);
}
if (_currentReplaceIndex > graphPolygon.Count - 1)
{
_currentReplaceIndex = 0;
}
}
}
}
updateCounter++;
if (updateCounter >= 1)
{
updateCounter = 0;
if (!_disableRendering)
{
OnDrawVisuals();
}
}
}
protected override void OnDrawVisuals()
{
if (graphPolygon.Count > 0)
{
double markerPosition = 0;
if (_currentReplaceIndex > 0)
{
markerPosition = (((_currentReplaceIndex - 1) * GetPolygonScaleFactor()) + _offSetX);
}
Brush stroke = _graphController.dataSeries.stroke != null ? _graphController.dataSeries.stroke : _stroke;
Brush fill = _graphController.dataSeries.fill != null ? _graphController.dataSeries.fill : _fill;
(dxGraph as DXGraphSurfaceSingleErase).SetProperties(
graphPolygon.ToDXPolygonPoints(_offSetX, _offSetY, GetPolygonScaleFactor(), ConvertYToImageYFliped),
_fillGraph ? graphPolygon.ToDXPolygonPointsFill(_offSetX, _offSetY, _mainWidth, _mainHeight, GetPolygonScaleFactor(),
ConvertYToImageYFliped) : null,
stroke,
_strokeWidth,
_fillGraph,
fill,
_antialiased,
_markerBrush,
markerPosition,
_showMarker,
_markerStrokeWidth);
dxGraph.EnableRendering();
}
}
#endregion
}
}
