■ ShapeFile 클래스의 GetShapeFileEnumerator 메소드를 사용해 도형 파일 특성 설명을 나열하는 방법을 보여준다.
▶ MainForm.cs
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using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Drawing; using System.Drawing.Imaging; using System.IO; using System.Windows.Forms; using EGIS.ShapeFileLib; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.openMenuItem.Click += openMenuItem_Click; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region Open 메뉴 항목 클릭시 처리하기 - openMenuItem_Click(sender, e) /// <summary> /// Open 메뉴 항목 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void openMenuItem_Click(object sender, EventArgs e) { try { if(this.openFileDialog.ShowDialog(this) == DialogResult.OK) { DateTime startTime = DateTime.Now; ReadShapeFile(this.openFileDialog.FileName); this.richTextBox.AppendText ( string.Format ( "Time to output attributes : {0}s", ((TimeSpan)DateTime.Now.Subtract(startTime)).TotalSeconds ) ); this.richTextBox.ScrollToCaret(); } } catch(Exception exception) { MessageBox.Show(exception.ToString()); } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 레코드 그리드 포인트 리스트 구하기 - GetRecordGridPointList(shapefile, recordIndex, gridCountX, gridCountY) /// <summary> /// 레코드 그리드 포인트 리스트 구하기 /// </summary> /// <param name="shapefile">도형 파일</param> /// <param name="recordIndex">레코드 인덱스</param> /// <param name="gridCountX">그리드 카운트 X</param> /// <param name="gridCountY">그리드 카운트 Y</param> /// <returns>레코드 그리드 포인트 리스트</returns> private List<PointD> GetRecordGridPointList(ShapeFile shapefile, int recordIndex, int gridCountX, int gridCountY) { if(shapefile.ShapeType != ShapeType.Polygon) { throw new Exception("only polygon shapefiles supported"); } List<PointD> gridPointList = new List<PointD>(); ReadOnlyCollection<PointD[]> shapePointArrayCollection = shapefile.GetShapeDataD(recordIndex); foreach(PointD[] shapePointArray in shapePointArrayCollection) { double minimumX = double.PositiveInfinity; double minimumY = double.PositiveInfinity; double maximumX = double.NegativeInfinity; double maximumY = double.NegativeInfinity; for(int i = shapePointArray.Length - 1; i >= 0; --i) { if(minimumX > shapePointArray[i].X) { minimumX = shapePointArray[i].X; } if(minimumY > shapePointArray[i].Y) { minimumY = shapePointArray[i].Y; } if(maximumX < shapePointArray[i].X) { maximumX = shapePointArray[i].X; } if(maximumY < shapePointArray[i].Y) { maximumY = shapePointArray[i].Y; } } double cellWidth = (maximumX - minimumX) / gridCountX; double cellHeight = (maximumY - minimumY) / gridCountY; double x = minimumX; while(x <= maximumX) { double y = minimumY; while(y <= maximumY) { if(GeometryAlgorithms.PointInPolygon(shapePointArray, x, y)) { gridPointList.Add(new PointD(x, y)); } y += cellHeight; } x += cellWidth; } } return gridPointList; } #endregion #region 포인트 그리드 생성하기 - GeneratePointGrid(shapefile) /// <summary> /// 포인트 그리드 생성하기 /// </summary> /// <param name="shapefile">도형 파일</param> private void GeneratePointGrid(ShapeFile shapefile) { for(int n = 0; n < shapefile.RecordCount; n++) { List<PointD> gridPointList = GetRecordGridPointList(shapefile, n, 50, 50); using(Bitmap bitmap = new Bitmap(360, 180)) { using(Graphics graphics = Graphics.FromImage(bitmap)) { for(int i = gridPointList.Count - 1; i >= 0; --i) { float x = (float)gridPointList[i].X; if(x > 180) { x -= 180; } x += 180; float y = 180 - ((float)gridPointList[i].Y + 90); graphics.FillEllipse(Brushes.Red, x, y, 2, 2); } } bitmap.Save(string.Format("record_{0}.bmp", n), ImageFormat.Bmp); } } } #endregion #region 도형 파일 읽기 - ReadShapeFile(filePath) /// <summary> /// 도형 파일 읽기 /// </summary> /// <param name="filePath">파일 경로</param> private void ReadShapeFile(string filePath) { ShapeFile.MapFilesInMemory = true; this.richTextBox.Clear(); this.richTextBox.ScrollToCaret(); bool outputPointsChecked = this.outputPointsCheckBox.Checked; bool outputZValuesChecked = this.outputZValuesCheckBox.Checked; bool outputMValuesChecked = this.outputMValuesCheckBox.Checked; ShapeFile shapeFile = new ShapeFile(filePath); try { this.richTextBox.AppendText(string.Format("파일 경로 : {0}\n", shapeFile.FilePath )); this.richTextBox.AppendText(string.Format("범위 : {0}\n", shapeFile.Extent )); this.richTextBox.AppendText(string.Format("도형 수 : {0}\n", shapeFile.RecordCount)); this.richTextBox.AppendText(string.Format("도형 타입 : {0}\n", shapeFile.ShapeType )); shapeFile.RenderSettings = new RenderSettings(filePath, "", Font); DbfReader reader = shapeFile.RenderSettings.DbfReader; this.richTextBox.AppendText("\n--- DBF 필드 설명 ---\n"); foreach(DbfFieldDesc fieldDescription in reader.DbfRecordHeader.GetFieldDescriptions()) { this.richTextBox.AppendText(fieldDescription + "\n"); } if(outputZValuesChecked) { outputZValuesChecked = (shapeFile.ShapeType == ShapeType.PolygonZ || shapeFile.ShapeType == ShapeType.PointZ); } if(outputPointsChecked || outputZValuesChecked || outputMValuesChecked) { this.richTextBox.AppendText("포인트 데이터 출력...\n"); this.richTextBox.Refresh(); this.richTextBox.ScrollToCaret(); using(StreamWriter writer = new StreamWriter("d:\\output.txt")) { ShapeFileEnumerator enumerator = shapeFile.GetShapeFileEnumerator(); int recordIndex = 0; while(enumerator.MoveNext()) { writer.WriteLine(string.Format("레코드 : {0}", recordIndex)); if(outputPointsChecked) { ReadOnlyCollection<PointD[]> pointArrayCollection = enumerator.Current; foreach(PointD[] pointArray in pointArrayCollection) { if(pointArray.Length < 50) { writer.Write(string.Format("[포인트 수 : {0}]", pointArray.Length)); for(int i = 0; i < pointArray.Length; i++) { if(i > 0) { writer.Write(','); } writer.Write(pointArray[i].ToString()); } writer.WriteLine(); } } } if(outputZValuesChecked) { ReadOnlyCollection<double[]> zValueArrayCollection = enumerator.GetCurrentZValues(); if(zValueArrayCollection != null) { writer.Write("Z 값 배열 :"); foreach(double[] zValueArray in zValueArrayCollection) { writer.Write("[높이 수 : {0}]", zValueArray.Length); for(int i = 0; i < zValueArray.Length; i++) { if(i > 0) { writer.Write(','); } writer.Write(zValueArray[i]); } } } writer.WriteLine(); } if(outputMValuesChecked) { ReadOnlyCollection<double[]> mValueArrayCollection = shapeFile.GetShapeMDataD(recordIndex); if(mValueArrayCollection != null) { foreach(double[] mValueArray in mValueArrayCollection) { if(mValueArray.Length < 50) { writer.Write("[측정 수 : {0}]", mValueArray.Length); for(int i = 0; i < mValueArray.Length; i++) { if(i > 0) { writer.Write(", "); } writer.Write(mValueArray[i]); } writer.WriteLine(); } } } writer.WriteLine(); } recordIndex++; } enumerator.Dispose(); } this.richTextBox.AppendText("포인트 데이터 파일 출력\n"); } GeneratePointGrid(shapeFile); } finally { shapeFile.Close(); shapeFile.Dispose(); } } #endregion } } |
