属于实时性要求比较高的开发案例
//-------------------------------------------------------------------------//// This is part of the STK 8 Object Model Examples// Copyright (C) 2006 Analytical Graphics, Inc.//// This source code is intended as a reference to users of the//STK 8 Object Model.//// File: Form1.cs// GPSDatabaseAccessDemo//// This program demonstrates use of the STK Object Model in conjunction//with two other integrable technologies, an odbc data source in the form//of a microsoft access database, and XML. The example loads a GPS constellation of//satellites from a preexisting database, and does the same of a facility from a//previously defined xml file containing positional data. It then computes and//retreives access data, and writes the output to an XML file. //// The features used are: Basic object manipulation, SGP4 Propagation,//Facility positioning, and Access computation/data providers.////--------------------------------------------------------------------------using System;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.IO;using System.Data;using System.Data.Odbc;using System.Xml;using AGI.STKObjects;namespace OMDemo{/// <summary>/// GPSDatabaseAccessDemo/// </summary>public class Form1 : System.Windows.Forms.Form{private AGI.STKObjects.AgStkObjectRootClass objModelRoot;private AGI.STKObjects.IAgStkObjectElementCollection Satellites = null;private AGI.STKObjects.AgFacilityClass Facility = null;private AGI.STKObjects.IAgStkAccess Access = null;#region FormSetup#region FormControlsprivate System.Windows.Forms.GroupBox groupBox1;private System.Windows.Forms.GroupBox groupBox2;private System.Windows.Forms.GroupBox groupBox3;private System.Windows.Forms.Button ComputeButton;private System.Windows.Forms.Button loadSatButton;private System.Windows.Forms.Button loadFacilityButton;private AxAGI.STKX.AxAgUiAxVOCntrl axAgUiAxVOCntrl1;/// <summary>/// Required designer variable./// </summary>///private System.ComponentModel.Container components = null;#endregionpublic Form1(){//// Required for Windows Form Designer support//InitializeComponent();//// TODO: Add any constructor code after InitializeComponent call//}/// <summary>/// Clean up any resources being used./// </summary>protected override void Dispose( bool disposing ){if( disposing ){if (components != null) {components.Dispose();}}base.Dispose( disposing );}#region Windows Form Designer generated code/// <summary>/// Required method for Designer support - do not modify/// the contents of this method with the code editor./// </summary>private void InitializeComponent(){System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));this.groupBox1 = new System.Windows.Forms.GroupBox();this.loadSatButton = new System.Windows.Forms.Button();this.groupBox2 = new System.Windows.Forms.GroupBox();this.loadFacilityButton = new System.Windows.Forms.Button();this.groupBox3 = new System.Windows.Forms.GroupBox();this.ComputeButton = new System.Windows.Forms.Button();this.axAgUiAxVOCntrl1 = new AxAGI.STKX.AxAgUiAxVOCntrl();this.groupBox1.SuspendLayout();this.groupBox2.SuspendLayout();this.groupBox3.SuspendLayout();((System.ComponentModel.ISupportInitialize)(this.axAgUiAxVOCntrl1)).BeginInit();this.SuspendLayout();// // groupBox1// this.groupBox1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right)));this.groupBox1.Controls.Add(this.loadSatButton);this.groupBox1.Location = new System.Drawing.Point(10, 471);this.groupBox1.Name = "groupBox1";this.groupBox1.Size = new System.Drawing.Size(288, 147);this.groupBox1.TabIndex = 2;this.groupBox1.TabStop = false;this.groupBox1.Text = "Satellite Setup";// // loadSatButton// this.loadSatButton.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left) | System.Windows.Forms.AnchorStyles.Right)));this.loadSatButton.Cursor = System.Windows.Forms.Cursors.Hand;this.loadSatButton.FlatStyle = System.Windows.Forms.FlatStyle.System;this.loadSatButton.Location = new System.Drawing.Point(29, 28);this.loadSatButton.Name = "loadSatButton";this.loadSatButton.Size = new System.Drawing.Size(217, 102);this.loadSatButton.TabIndex = 7;this.loadSatButton.Text = "Load Satellites From Database";this.loadSatButton.Click = new System.EventHandler(this.loadSatButton_Click);// // groupBox2// this.groupBox2.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));this.groupBox2.Controls.Add(this.loadFacilityButton);this.groupBox2.Location = new System.Drawing.Point(307, 471);this.groupBox2.Name = "groupBox2";this.groupBox2.Size = new System.Drawing.Size(288, 147);this.groupBox2.TabIndex = 3;this.groupBox2.TabStop = false;this.groupBox2.Text = "Facility Setup";// // loadFacilityButton// this.loadFacilityButton.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));this.loadFacilityButton.Cursor = System.Windows.Forms.Cursors.Hand;this.loadFacilityButton.FlatStyle = System.Windows.Forms.FlatStyle.System;this.loadFacilityButton.Location = new System.Drawing.Point(38, 28);this.loadFacilityButton.Name = "loadFacilityButton";this.loadFacilityButton.Size = new System.Drawing.Size(218, 102);this.loadFacilityButton.TabIndex = 0;this.loadFacilityButton.Text = "Load Facility From XML";this.loadFacilityButton.Click = new System.EventHandler(this.loadFacilityButton_Click);// // groupBox3// this.groupBox3.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));this.groupBox3.Controls.Add(this.ComputeButton);this.groupBox3.Location = new System.Drawing.Point(605, 471);this.groupBox3.Name = "groupBox3";this.groupBox3.Size = new System.Drawing.Size(144, 147);this.groupBox3.TabIndex = 4;this.groupBox3.TabStop = false;this.groupBox3.Text = "Access";// // ComputeButton// this.ComputeButton.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));this.ComputeButton.Enabled = false;this.ComputeButton.Location = new System.Drawing.Point(14, 28);this.ComputeButton.Name = "ComputeButton";this.ComputeButton.Size = new System.Drawing.Size(111, 101);this.ComputeButton.TabIndex = 1;this.ComputeButton.Text = "Compute And Write To XML";this.ComputeButton.Click = new System.EventHandler(this.ComputeButton_Click);// // axAgUiAxVOCntrl1// this.axAgUiAxVOCntrl1.Enabled = true;this.axAgUiAxVOCntrl1.Location = new System.Drawing.Point(0, 0);this.axAgUiAxVOCntrl1.Name = "axAgUiAxVOCntrl1";this.axAgUiAxVOCntrl1.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axAgUiAxVOCntrl1.OcxState")));this.axAgUiAxVOCntrl1.Size = new System.Drawing.Size(760, 464);this.axAgUiAxVOCntrl1.TabIndex = 5;// // Form1// this.AutoScaleBaseSize = new System.Drawing.Size(6, 15);this.ClientSize = new System.Drawing.Size(758, 627);this.Controls.Add(this.axAgUiAxVOCntrl1);this.Controls.Add(this.groupBox1);this.Controls.Add(this.groupBox2);this.Controls.Add(this.groupBox3);this.MinimumSize = new System.Drawing.Size(640, 578);this.Name = "Form1";this.Text = "GPSDemo";this.Load = new System.EventHandler(this.Form1_Load);this.groupBox1.ResumeLayout(false);this.groupBox2.ResumeLayout(false);this.groupBox3.ResumeLayout(false);((System.ComponentModel.ISupportInitialize)(this.axAgUiAxVOCntrl1)).EndInit();this.ResumeLayout(false);}#endregion#endregion/// <summary>/// The main entry point for the application./// </summary>[STAThread]static void Main() {Application.Run(new Form1());}private void Form1_Load(object sender, System.EventArgs e){objModelRoot = new AGI.STKObjects.AgStkObjectRootClass();objModelRoot.NewScenario("ObjectModelGPSDemo");IAgScenario scene = (IAgScenario)objModelRoot.CurrentScenario;scene.StartTime = "1 Jul 2005 12:00:00.000";scene.StopTime = "5 Jul 2005 12:00:00.000";}private void loadSatButton_Click(object sender, System.EventArgs e){loadSatButton.Enabled = false;if (!loadFacilityButton.Enabled) ComputeButton.Enabled = true;ConnectAndLoadGPSDatabase();}private void ConnectAndLoadGPSDatabase(){// Connect to GPS satellite databasestring ConnectionString =@"Driver={Microsoft Access Driver (*.mdb)};DBQ=" Directory.GetCurrentDirectory() @"\..\..\GPS.mdb";OdbcConnection odbcConnection = new OdbcConnection(ConnectionString);OdbcCommand odbcCmd = new OdbcCommand("Select * FROM TLETable");odbcCmd.Connection = odbcConnection;odbcConnection.Open();OdbcDataReader odbcReader = odbcCmd.ExecuteReader();while (odbcReader.Read()){AddGPSSatellite(odbcReader);}Satellites = objModelRoot.CurrentScenario.Children.GetElements(AGI.STKObjects.AgESTKObjectType.eSatellite);objModelRoot.Rewind();odbcReader.Close();odbcConnection.Close();}private void AddGPSSatellite(OdbcDataReader dataSource){// Define GPS satellite from the datasource using the SGP4 propagator// to configure and propagate the satellite.AGI.STKObjects.IAgSatellite Satellite = (AGI.STKObjects.IAgSatellite)objModelRoot.CurrentScenario.Children.New(AGI.STKObjects.AgESTKObjectType.eSatellite, "GPS" dataSource.GetString(0));Satellite.SetPropagatorType(AGI.STKObjects.AgEVePropagatorType.ePropagatorSGP4);AGI.STKObjects.IAgVePropagatorSGP4 SGP4 = (AGI.STKObjects.IAgVePropagatorSGP4)Satellite.Propagator;SGP4.StartTime = "1 Jul 2005 12:00:00.000";SGP4.StopTime = "5 Jul 2005 12:00:00.000";SGP4.Segments.AddSeg();AGI.STKObjects.IAgVeSGP4Segment Segment = (AGI.STKObjects.IAgVeSGP4Segment)SGP4.Segments[0];Segment.SSCNum= dataSource.GetString(0);Segment.Classification= dataSource.GetString(1);Segment.IntlDesignator= dataSource.GetString(2);Segment.Epoch= dataSource.GetDouble(3);Segment.BStar= dataSource.GetDouble(4);Segment.RevNumber= dataSource.GetInt32(5);Segment.Inclination= dataSource.GetDouble(6);Segment.RAAN= dataSource.GetDouble(7);Segment.Eccentricity= dataSource.GetDouble(8);Segment.ArgOfPerigee= dataSource.GetDouble(9);Segment.MeanAnomaly= dataSource.GetDouble(10);Segment.MeanMotion= dataSource.GetDouble(11);SGP4.Propagate();}private void ComputeButton_Click(object sender, System.EventArgs e){ComputeAndWriteAccessXML();}private void ComputeAndWriteAccessXML(){// Compute Access from each GPS satellite to the loaded facility,// and write access data to XML documentXmlTextWriter AccessXML = new XmlTextWriter(Directory.GetCurrentDirectory() @"\..\..\Access.xml", null);AccessXML.Formatting = Formatting.Indented;AccessXML.WriteStartDocument();AccessXML.WriteStartElement("GPS_Satellite_Access");foreach (AGI.STKObjects.IAgStkObject Satellite in Satellites){Access = (AGI.STKObjects.IAgStkAccess)Satellite.GetAccessToObject(Facility);Access.AccessTimePeriod = AGI.STKObjects.AgEAccessTimeType.eScenarioAccessTime;Access.ComputeAccess();// Only report specific data using the data provider's ExecElements functionality// to specify certain elements of the access data setAGI.STKObjects.IAgScenario Scenario = (AGI.STKObjects.IAgScenario)objModelRoot.CurrentScenario;System.Array Elements = new object[] { "Start Time", "Stop Time", "Duration" };AGI.STKObjects.IAgDataProvider DataProvider = (AGI.STKObjects.IAgDataProvider)Access.DataProviders["Access Data"];AGI.STKObjects.IAgDrResult Result = ((AGI.STKObjects.IAgDataPrvInterval)DataProvider).ExecElements(Scenario.StartTime,Scenario.StopTime,ref Elements);WriteAccessElement(Satellite, Result, AccessXML);}AccessXML.WriteEndElement();AccessXML.Flush();AccessXML.WriteEndDocument();AccessXML.Close();}private void WriteAccessElement(IAgStkObject Satellite, IAgDrResult Result, XmlTextWriter AccessXML){// Write access data to XMLAccessXML.WriteStartElement(Satellite.InstanceName "_To_" Facility.InstanceName);foreach (AGI.STKObjects.IAgDrInterval AccessInterval in Result.Intervals){for(int Access = 0; Access < AccessInterval.DataSets[0].Count; Access ){AccessXML.WriteStartElement("Access");AccessXML.WriteStartElement("Start_Time");AccessXML.WriteString(AccessInterval.DataSets[0].GetValues().GetValue(Access).ToString());AccessXML.WriteEndElement();AccessXML.WriteStartElement("Stop_Time");AccessXML.WriteString(AccessInterval.DataSets[1].GetValues().GetValue(Access).ToString());AccessXML.WriteEndElement();AccessXML.WriteStartElement("Duration");AccessXML.WriteString(AccessInterval.DataSets[2].GetValues().GetValue(Access).ToString());AccessXML.WriteEndElement();AccessXML.WriteEndElement();}}AccessXML.WriteEndElement();}private void loadFacilityButton_Click(object sender, System.EventArgs e){loadFacilityButton.Enabled = false;if (!loadSatButton.Enabled) ComputeButton.Enabled = true;LoadFacilityXML();}private void LoadFacilityXML(){// Define a facility from an existing XML file containing structured positional dataAGI.STKObjects.IAgGeodetic FacPosition = null;XmlTextReader FacilityXML = new XmlTextReader (Directory.GetCurrentDirectory() @"\..\..\Facility.xml");while (FacilityXML.Read()){if (FacilityXML.NodeType == XmlNodeType.Element){if (FacilityXML.LocalName.Equals("InstanceName")){Facility = (AGI.STKObjects.AgFacilityClass)objModelRoot.CurrentScenario.Children.New(AGI.STKObjects.AgESTKObjectType.eFacility, FacilityXML.ReadString());FacPosition = (AGI.STKObjects.IAgGeodetic)Facility.Position.ConvertTo(AGI.STKObjects.AgEPositionType.eGeodetic);}if (FacilityXML.LocalName.Equals("Latitude")) FacPosition.Lat = Convert.ToDouble(FacilityXML.ReadString());if (FacilityXML.LocalName.Equals("Longitude")) FacPosition.Lon = Convert.ToDouble(FacilityXML.ReadString());if (FacilityXML.LocalName.Equals("Altitude")) FacPosition.Alt = Convert.ToDouble(FacilityXML.ReadString());}}Facility.Position.Assign(FacPosition);}}}
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