[EASYGIS/WINFORM] ShapeFile 클래스 : GetShapeFileEnumerator 메소드를 사용해 도형 파일 특성 설명 나열하기
EasyGIS/WinForm 2020. 5. 16. 00:32728x90
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▶ MainForm.cs
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
}
}728x90
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