Example 125: Scientific Graph showing scatter plus data-point dragging

1//! Click and Drag symbols with mouse. //
2 
3// This example builds upon the basic CreateSimpleSGraph '100' example chart //
4CreateSimpleSGraph(Pesgo1);
5 
6// Change the data to that of a scatter plot //
7Pesgo1.PeData.Subsets = 4;
8Pesgo1.PeData.Points = 12;
9 
10int s, p;
11for (s = 0; s <= 3; s++)
12{
13    for (p = 0; p <= 11; p++)
14    {
15        Pesgo1.PeData.X[s, p] = (float)(25 + (Rand_Num.NextDouble() * 25.0F));
16        Pesgo1.PeData.Y[s, p] = (float)(90 + (Rand_Num.NextDouble() * 25.0F));
17    }
18}
19 
20// Set the PlottingMethod to point //
21Pesgo1.PePlot.Method = SGraphPlottingMethod.PointsPlusLine;
22 
23// Enable data hot spots //
24Pesgo1.PeUserInterface.HotSpot.Data = true;
25 
26// Make Data hots spot locations larger //
27Pesgo1.PeUserInterface.HotSpot.Size = HotSpotSize.Large;
28 
29// Disable some types of plotting methods //
30Pesgo1.PePlot.Allow.Spline = false;
31Pesgo1.PePlot.Allow.SplineArea = false;
32Pesgo1.PePlot.Allow.PointsPlusSpline = false;
33Pesgo1.PePlot.Allow.BestFitLine = false;
34Pesgo1.PePlot.Allow.BestFitCurve = false;
35Pesgo1.PePlot.Allow.Area = false;
36 
37Pesgo1.PeColor.BitmapGradientMode = true;
38Pesgo1.PeColor.QuickStyle = QuickStyle.DarkNoBorder;
39 
40// Generally call ReinitializeResetImage at end **'
41Pesgo1.PeFunction.ReinitializeResetImage();
42Pesgo1.Invalidate();
43// Optionally call Pesgo1.Refresh() if you are not seeing changes immediately
44 
45/*///////////////////////////////////////////////
46// Code below is how dragging logic is formed ///
47/////////////////////////////////////////////////
48 
49// In the Forms Class Declarations sections, add some variables //
50Boolean bDragging;
51int nDragIndexS;
52int nDragIndexP;
53 
54//////////////////////////////////////////
55// DataHotSpot event handler //
56///////////////////////////////
57private void Pesgo1_PeDataHotSpot(object sender, Gigasoft.ProEssentials.EventArg.DataHotSpotEventArgs e)
58{
59    bDragging = true;             // Start dragging process, set flag to true
60    nDragIndexS = e.SubsetIndex;  // Store subset index
61    nDragIndexP = e.PointIndex;   // Store point index
62}
63 
64/////////////////////////////////////
65// MouseMove event handler //
66/////////////////////////////
67private void Pesgo1_MouseMove(object sender, System.Windows.Forms.MouseEventArgs e)
68{
69    int nA, nX, nY;
70    double fX = 0, fY = 0;
71 
72    // get last mouse location within control //'
73    System.Drawing.Point pt = Pesgo1.PeUserInterface.Cursor.LastMouseMove;
74 
75    nA = 0;      // Initialize axis if using OverlapMultiAxes, else this function will
76                 // return the axis if MultiAxesSubsets is used without OverlapMultiAxes
77    nX = pt.X;   // Initialize nX and nY with mouse location
78    nY = pt.Y;
79    // This returns mouse coordinates in data units //
80    Pesgo1.PeFunction.ConvPixelToGraph(ref nA,ref nX,ref nY,ref fX,ref fY, false, false, false);
81 
82    // Check move-to location and restrain to the chart's extents.
83    // Note that you can only expect to read valid ManualMinX type
84    // properties after an initial PEactions = 0 or PEactions = 1
85    // has been executed.
86    if(fX <= Pesgo1.PeGrid.Configure.ManualMinX)
87        fX = Pesgo1.PeGrid.Configure.ManualMinX;
88    else if(fX >= Pesgo1.PeGrid.Configure.ManualMaxX)
89        fX = Pesgo1.PeGrid.Configure.ManualMaxX;
90 
91    if(fY <= Pesgo1.PeGrid.Configure.ManualMinY)
92        fY = Pesgo1.PeGrid.Configure.ManualMinY;
93    else if(fY >= Pesgo1.PeGrid.Configure.ManualMaxY)
94        fY = Pesgo1.PeGrid.Configure.ManualMaxY;
95 
96    // Change XData and YData to new location //'
97    Pesgo1.PeData.X[nDragIndexS, nDragIndexP] = (float)(fX);
98    Pesgo1.PeData.Y[nDragIndexS, nDragIndexP] = (float)(fY);
99 
100    // Performs a PartialReinitialize, ResetImage, and Invalidate //'
101    Pesgo1.PeFunction.PartialReinitialize();
102    Pesgo1.PeFunction.ResetImage(0, 0);
103    Pesgo1.Invalidate();
104}
105 
106///////////////////////////////////
107// Example MouseUp event handler //
108///////////////////////////////////
109private void Pesgo1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
110{
111    bDragging = false;
112}
113 
114*/