Example 146: Scientific Graph showing Real Time with Local Data Circular Buffers

1Pesgo1.PeData.Subsets = 4;
2Pesgo1.PeData.Points = 2000000;
3 
4// MouseWheelZooming shows frozen data, Example 145 MouseWheelZooming shows moving data
5 
6// New v10 feature CircularBuffers //  Only applies to Append type features.
7// Most beneficial with larger data sets and using AppendYData AppendXData
8// combined with ComputerShader construction with StagingBuffers.
9// CircularBuffers avoid having to shift existing data when appending.
10// ComputeShader rendering block copies data so there is no penalty in accessing data
11// to build the chart.
12Pesgo1.PeData.CircularBuffers = true;
13 
14Pesgo1.PeData.DuplicateDataX = DuplicateData.PointIncrement;
15int nX = 1;
16for (int p = 0; p < 2000000; p++)
17{
18    MainWindow.MyXData146[p] = nX;  // MyXData146 is app memory
19    nX++;
20}
21 
22// quickly create 8 million random y data points, sin function is slow
23float[] MySubData0 = new float[8400];
24float[] MySubData1 = new float[8400];
25float[] MySubData2 = new float[8400];
26float[] MySubData3 = new float[8400];
27for (int p = 0; p < 8400; p++)
28{
29    MySubData0[p] = (float)(50 + (Math.Sin(p * 0.00075) * (0 + 1) * 30) + (Rand_Num.NextDouble() * 15));
30    MySubData1[p] = (float)(50 + (Math.Sin(p * 0.00075) * (1 + 1) * 30) + (Rand_Num.NextDouble() * 15));
31    MySubData2[p] = (float)(50 + (Math.Sin(p * 0.00075) * (2 + 1) * 30) + (Rand_Num.NextDouble() * 15));
32    MySubData3[p] = (float)(50 + (Math.Sin(p * 0.00075) * (3 + 1) * 30) + (Rand_Num.NextDouble() * 15));
33}
34 
35// MyYData146 is app memory
36 
37for (int j = 0; j < 1991600; j += 8400)
38    Array.Copy(MySubData0, 0, MainWindow.MyYData146, j, 8400);
39for (int j = 0; j < 1991600; j += 8400)
40    Array.Copy(MySubData1, 0, MainWindow.MyYData146, j + 2000000, 8400);
41for (int j = 0; j < 1991600; j += 8400)
42    Array.Copy(MySubData2, 0, MainWindow.MyYData146, j + 4000000, 8400);
43for (int j = 0; j < 1991600; j += 8400)
44    Array.Copy(MySubData3, 0, MainWindow.MyYData146, j + 6000000, 8400);
45 
46// Provide local pointers to circular buffer data, data is not copied to chart // See example 145 that copies data to chart and circular buffer exists inside chart.
47Pesgo1.PeData.X.UseDataAtLocation(MainWindow.MyXData146, 2000000);
48Pesgo1.PeData.Y.UseDataAtLocation(MainWindow.MyYData146, 8000000);
49// compare speed of example 145 to 146.  146 is faster.  Likely because it's not copying memory but using app local memory.
50 
51// Set Manual Y scale //  Avoiding cpu intensive searching for min max
52Pesgo1.PeGrid.Configure.ManualScaleControlY = ManualScaleControl.MinMax;
53Pesgo1.PeGrid.Configure.ManualMinY = -110;
54Pesgo1.PeGrid.Configure.ManualMaxY = 220;
55 
56// Set Manual X scale // Avoiding cpu intensive searching for min max
57Pesgo1.PeGrid.Configure.ManualScaleControlX = ManualScaleControl.MinMax;
58Pesgo1.PeGrid.Configure.ManualMinX = 0;
59Pesgo1.PeGrid.Configure.ManualMaxX = 2000000;
60 
61// Set Various Other Properties ///
62Pesgo1.PeColor.BitmapGradientMode = false;
63Pesgo1.PeColor.QuickStyle = QuickStyle.DarkNoBorder;
64 
65// Set various properties //
66Pesgo1.PeString.MainTitle = "4 x 2 Million Real-Time Circular Buffer";
67Pesgo1.PeString.SubTitle = "";
68 
69Pesgo1.PeConfigure.PrepareImages = true;
70Pesgo1.PeConfigure.CacheBmp = true;
71Pesgo1.PeFont.Fixed = true;
72 
73Pesgo1.PeColor.SubsetColors[0] = Color.FromArgb(255, 255, 0, 0);
74Pesgo1.PeColor.SubsetColors[1] = Color.FromArgb(255, 0, 255, 0);
75Pesgo1.PeColor.SubsetColors[2] = Color.FromArgb(255, 255, 255, 0);
76Pesgo1.PeColor.SubsetColors[3] = Color.FromArgb(255, 0, 255, 255);
77 
78Pesgo1.PeConfigure.TextShadows = TextShadows.BoldText;
79Pesgo1.PeFont.MainTitle.Bold = true;
80Pesgo1.PeFont.SubTitle.Bold = true;
81Pesgo1.PeFont.Label.Bold = true;
82Pesgo1.PeFont.SizeGlobalCntl = 1.4F;
83 
84Pesgo1.PePlot.SubsetLineTypes[0] = LineType.ThinSolid;
85Pesgo1.PePlot.SubsetLineTypes[1] = LineType.ThinSolid;
86Pesgo1.PePlot.SubsetLineTypes[2] = LineType.ThinSolid;
87Pesgo1.PePlot.SubsetLineTypes[3] = LineType.ThinSolid;
88Pesgo1.PePlot.SubsetLineTypes[4] = LineType.ThinSolid;
89 
90Pesgo1.PePlot.Method = SGraphPlottingMethod.Line;
91Pesgo1.PePlot.DataShadows = DataShadows.None;
92 
93Pesgo1.PeGrid.Configure.AutoMinMaxPaddingX = 0;
94Pesgo1.PeConfigure.ImageAdjustLeft = 50;
95Pesgo1.PeConfigure.ImageAdjustRight = 0;
96 
97Pesgo1.PeLegend.SimpleLine = true;
98Pesgo1.PeFont.FontSize = FontSize.Small;
99 
100Pesgo1.PeUserInterface.Dialog.PlotCustomization = false;
101Pesgo1.PeUserInterface.Dialog.Page2 = false;
102Pesgo1.PeUserInterface.Allow.Popup = true;
103Pesgo1.PeUserInterface.Dialog.Axis = false;
104Pesgo1.PeUserInterface.Dialog.Subsets = true;
105Pesgo1.PeUserInterface.Allow.TextExport = false;
106Pesgo1.PeUserInterface.Dialog.AllowEmfExport = false;
107Pesgo1.PeUserInterface.Dialog.AllowWmfExport = false;
108 
109Pesgo1.PeUserInterface.Menu.DataShadow = MenuControl.Hide;
110Pesgo1.PeUserInterface.Menu.MarkDataPoints = MenuControl.Hide;
111 
112Pesgo1.PeConfigure.AntiAliasText = true;
113Pesgo1.PeConfigure.AntiAliasGraphics = true;
114 
115// Allow MouseWheel Zooming //
116Pesgo1.PeUserInterface.Scrollbar.ScrollingHorzZoom = true;
117Pesgo1.PeUserInterface.Scrollbar.MouseWheelFunction = MouseWheelFunction.HorizontalZoom;
118 
119Pesgo1.PeConfigure.RenderEngine = RenderEngine.Direct3D;
120 
121Pesgo1.PeData.ComputeShader = true;
122Pesgo1.PeData.StagingBufferX = true;
123Pesgo1.PeData.StagingBufferY = true;
124Pesgo1.PeData.Filter2D3D = true;
125 
126Pesgo1.PeSpecial.AutoImageReset = false;
127Pesgo1.PeUserInterface.Cursor.HourGlassThreshold = 99999999;
128 
129Pesgo1.PeFunction.Force3dxVerticeRebuild = true;
130Pesgo1.PeFunction.ReinitializeResetImage();
131 
132// Initialize Counters and Timer //
133MainWindow.m_nRealTimeCounter = 2000000;
134MainWindow.m_nSinCounter = 2000000;
135 
136MainWindow.Timer1.Interval = 15;
137MainWindow.Timer1.Start();
138 
139/*
140/////////////////////////
141// Example Timer Event //
142/////////////////////////
143private void Timer1_Tick(object sender, System.EventArgs e)
144{
145    int nNewSamplesPerSubsetsPerTick = 150;
146 
147    // New y value and x value //  Bock of  memory subset0p0 subset0p1 subset0p2 subset0p3 subset0p4 subset1p0 subset1p0
148    for (int s = 0; s < 4; s++)
149    {
150        for (int p = 0; p < nNewSamplesPerSubsetsPerTick; p++)
151        {
152            pNewY145[(s * nNewSamplesPerSubsetsPerTick) + p] = (float)(50 + (Math.Sin((m_nSinCounter + p) * 0.00075) * (s + 1) * 30) + (Rand_Num.NextDouble() * 15));
153        }
154    }
155    for (int p = 0; p < nNewSamplesPerSubsetsPerTick; p++)
156    {
157        pNewX145[p] = m_nRealTimeCounter + p + 1;
158    }
159 
160    // Append new values  //
161    Pesgo1.PeData.Y.AppendData(pNewY145, nNewSamplesPerSubsetsPerTick);
162    Pesgo1.PeData.X.AppendData(pNewX145, nNewSamplesPerSubsetsPerTick);
163 
164    // Increment counter ///
165    m_nRealTimeCounter = m_nRealTimeCounter + nNewSamplesPerSubsetsPerTick;
166 
167    // We initialized chart with manual Scaling, so we need to manually control x axis range.
168    // For real-time with large data sets, manually scaling axes prevents the chart
169    // from having to search for min-max ranges which is cpu intensive.
170 
171    Pesgo1.PeGrid.Configure.ManualMinX = m_nRealTimeCounter - 2000000;
172    Pesgo1.PeGrid.Configure.ManualMaxX = m_nRealTimeCounter;
173 
174    m_nSinCounter = m_nSinCounter + nNewSamplesPerSubsetsPerTick;
175 
176    //if (Pesgo1.PeGrid.Zoom.Mode == true) // without this, one can zoom and see a stationary view of the data, else the view shifts
177    //{
178    //    Pesgo1.PeGrid.Zoom.MaxX = Pesgo1.PeGrid.Zoom.MaxX + nNewSamplesPerSubsetsPerTick;
179    //    Pesgo1.PeGrid.Zoom.MinX = Pesgo1.PeGrid.Zoom.MinX + nNewSamplesPerSubsetsPerTick;
180    //}
181 
182    Pesgo1.PeFunction.Force3dxVerticeRebuild = true;
183    Pesgo1.PeFunction.ReinitializeResetImage(); // needed to update the x axis to latest extents
184    Pesgo1.Invalidate();
185 
186    if (m_nSinCounter >= 135) { m_nSinCounter = 0; }
187}
188 
189*/