/// <summary>
/// 基于文件路径的构造函数
/// </summary>
internal MyLayer(string layerpath)
{
if (Path.GetExtension(layerpath) == ".shp")
{
Shapefile shp = new Shapefile(layerpath);
layerName = shp.Name;
dataType = shp.DataType;
spaceData = new MySpaceData(shp);
renderer = new SimpleRenderer(dataType);
rendertype = RendererType.SimpleRenderer;
hastext = false;
Visible = true;
filepath = shp.FilePath;
}
else
{
CosmosGisVector cgv = new CosmosGisVector(layerpath);
layerName = cgv.Name;
dataType = cgv.SpaceDataType;
spaceData = new MySpaceData(cgv);
renderer = new SimpleRenderer(dataType);
rendertype = RendererType.SimpleRenderer;
hastext = false;
Visible = true;
filepath = cgv.FilePath;
}
/*///TODO
* spaceData = new MySpaceData("");
* layerName = Path.GetFileNameWithoutExtension(fileName);
* dataType = spaceData.DataType;
* this.Visible = true;*/
}
/// <summary>
/// 基于Shapefile的构造函数
/// </summary>
/// <param name="shp"></param>
internal MySpaceData(Shapefile shp)
{
filePath = shp.AttrFilePath;
dataName = shp.Name;
dataType = shp.DataType;
geoFeature = shp.GetGeometryFeature();
property = new MyProperty(shp.AttrFilePath);
}
internal MyLayer(MyGrid grid)
{
layerName = grid.Name;
dataType = MySpaceDataType.MyGrid;
spaceData = new MySpaceData(grid);
Visible = true;
filepath = grid.FilePath;
}
/// <summary>
/// 基于CosmosGisVector的构造函数
/// </summary>
/// <param name="cgv"></param>
internal MySpaceData(CosmosGisVector cgv)
{
filePath = cgv.AttrFilePath;
dataName = cgv.Name;
dataType = cgv.SpaceDataType;
geoFeature = cgv.GetGeometryFeature();
property = new MyProperty(cgv.AttrFilePath);
}
/// <summary>
/// 构造函数，参数不能修改
/// </summary>
/// <param name="datatype_value">要素的类型</param>
/// <param name="newfieldname">渲染字段名称</param>
/// <param name="newvalues">所有该字段的值</param>
public UniqueValueRenderer(MySpaceDataType datatype_value, string newfieldname, List <string> newvalues)
{
newvalues = newvalues.Distinct().ToList();
datatype = datatype_value;
field = newfieldname;
values = newvalues;
symbolstyles = new List <Symbol>();
RandonSymbol();
SymbolCount = symbolstyles.Count;
}
/// <summary>
/// 基于CosmosGisVector的构造函数
/// </summary>
/// <param name="cgv">CosmosGisVector</param>
internal MyLayer(CosmosGisVector cgv)
{
layerName = cgv.Name;
dataType = cgv.SpaceDataType;
spaceData = new MySpaceData(cgv);
renderer = new SimpleRenderer(dataType);
rendertype = RendererType.SimpleRenderer;
hastext = false;
Visible = true;
filepath = cgv.FilePath;
}
/// <summary>
/// 基于Shapefile的构造函数
/// </summary>
/// <param name="shp">Shapefile</param>
internal MyLayer(Shapefile shp)
{
layerName = shp.Name;
dataType = shp.DataType;
spaceData = new MySpaceData(shp);
renderer = new SimpleRenderer(dataType);
rendertype = RendererType.SimpleRenderer;
hastext = false;
Visible = true;
filepath = shp.FilePath;
}
/// <summary>
/// 自定义分级层数的颜色分级构造函数
/// </summary>
/// <param name="datatype_value"></param>
/// <param name="newfieldname"></param>
/// <param name="newvalues"></param>
/// <param name="breakcount"></param>
public ClassBreakRenderer(MySpaceDataType datatype_value, int breakcount, string newfieldname, List <double> newvalues)
{
datatype = datatype_value;
field = newfieldname;
values = newvalues;
values.Sort();
BreakEqualByValue(breakcount);
symbolmode = 1;
symbolstyles = new List <Symbol>();
AutoSetColor(Color.Red, Color.Green);
SymbolCount = symbolstyles.Count;
}
/// <summary>
/// //选择空间数据类型
/// </summary>
private void comboBoxType_SelectedIndexChanged(object sender, EventArgs e)
{
switch (comboBoxType.SelectedIndex)
{
case 0:
spaceDataType = MySpaceDataType.MyPoint;
break;
case 1:
spaceDataType = MySpaceDataType.MyPolyLine;
break;
case 2:
spaceDataType = MySpaceDataType.MyPolygon;
break;
}
}
/// <summary>
/// 自定义分级级数的分级方法，可选分级模式
/// </summary>
/// <param name="datatype_value"></param>
/// <param name="newfieldname"></param>
/// <param name="newvalues"></param>
/// <param name="breakcount"></param>
/// <param name="newmode"></param>
public ClassBreakRenderer(MySpaceDataType datatype_value, int breakcount, string newfieldname, List <double> newvalues, int newmode)
{
datatype = datatype_value;
field = newfieldname;
values = newvalues;
values.Sort();
BreakEqualByValue(breakcount);
symbolmode = newmode;
symbolstyles = new List <Symbol>();
if (newmode == 1)
{
AutoSetColor(Color.Red, Color.Green);
}
else if (newmode == 2)
{
AutoSetSize(0.5, (0.5 + BreakCount * 0.5));
}
SymbolCount = symbolstyles.Count;
}
static private int GetSpaceDataTypeID(MySpaceDataType spaceDataType)
{
int id = -1;
switch (spaceDataType)
{
case MySpaceDataType.MyPoint:
id = 0;
break;
case MySpaceDataType.MyPolyLine:
id = 1;
break;
case MySpaceDataType.MyPolygon:
id = 2;
break;
}
return(id);
}
/// <summary>
/// 在指定路径下创建指定类型的空白CGV文件
/// </summary>
/// <param name="path">文件路径</param>
/// <param name="spaceDataType">要素类型</param>
public static void CreateEmptyCgv(string path, MySpaceDataType spaceDataType)
{
using (StreamWriter sw = new StreamWriter(path, false))
{
string title = GetSpaceDataTypeID(spaceDataType).ToString() + " 10000000 -10000000 10000000 -10000000 0"; //文件头
sw.WriteLine(title);
}
string mdbFilePath = Path.GetDirectoryName(path) + "\\" + Path.GetFileNameWithoutExtension(path) + ".mdb";
ADOX.Catalog catalog = new Catalog();
catalog.Create(@"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + mdbFilePath); //此语句在数据库已经存在时会报错，待完善
string connectString = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + mdbFilePath;
OleDbConnection cnn = new OleDbConnection(connectString);
cnn.Open();
OleDbCommand command = new OleDbCommand("Create Table " + Path.GetFileNameWithoutExtension(path) + "(FID integer primary key);", cnn);
command.ExecuteNonQuery();
cnn.Close();
cnn.Dispose();
}
/// <summary>
/// 基于文件路径的构造函数
/// </summary>
/// <param name="path">文件路径</param>
public CosmosGisVector(string path)
{
if (Path.GetExtension(path) != ".cgv")
{
throw new IOException("文件拓展名不正确！");
}
this.filePath = path;
this.Name = Path.GetFileNameWithoutExtension(path);
this.attrFilePath = Path.GetDirectoryName(path) + "\\" + Name + ".mdb";
using (StreamReader sr = new StreamReader(new FileStream(path, FileMode.Open)))
{
string strLine = sr.ReadLine(); //读文件头
string[] data = strLine.Split(' ');
spaceDataTypeID = int.Parse(data[0]);
xmin = Double.Parse(data[1]);
xmax = Double.Parse(data[2]);
ymin = Double.Parse(data[3]);
ymax = Double.Parse(data[4]);
count = int.Parse(data[5]);
switch (spaceDataTypeID)
{
case 0:
spaceDataType = MySpaceDataType.MyPoint;
ReadPointCgv(sr);
break;
case 1:
spaceDataType = MySpaceDataType.MyPolyLine;
ReadMultiPolylineCgv(sr);
break;
case 2:
spaceDataType = MySpaceDataType.MyPolygon;
ReadMultiPolygonCgv(sr);
break;
}
}
}
/// <summary>
/// 基于栅格数据的构造函数
/// </summary>
/// <param name="grid"></param>
internal MySpaceData(MyGrid grid)
{
myGrid = grid;
dataName = grid.Name;
dataType = MySpaceDataType.MyGrid;
}
public Renderer(MySpaceDataType datatype_value)
{
datatype = datatype_value;
}
//public SimpleRenderer() { symbolstyle=new Symbol (); }
public SimpleRenderer(MySpaceDataType datatype_value)
{
SymbolCount = 1;
datatype = datatype_value;
symbolstyle = CreatNewSymbol();
}
public Shapefile(string filePath)
{
this.filePath = filePath;
fileName = Path.GetFileNameWithoutExtension(filePath);
attrFilePath = Path.GetDirectoryName(filePath) + "\\" + fileName + ".mdb";
FileStream fs = new FileStream(filePath, FileMode.Open);
BinaryReader br = new BinaryReader(fs);
//读取文件头
fileCode = ReverseByte(br.ReadInt32());
for (int i = 1; i <= 5; i++)
{
br.ReadInt32();
}
fileLength = ReverseByte(br.ReadInt32()) * 2;
version = br.ReadInt32();
shapeTypeID = br.ReadInt32();
xmin = br.ReadDouble();
ymin = br.ReadDouble();
xmax = br.ReadDouble();
ymax = br.ReadDouble();
zmin = br.ReadDouble();
zmax = br.ReadDouble();
mmin = br.ReadDouble();
mmax = br.ReadDouble();
byteCount += 100;
float xcenter = ((float)xmin + (float)xmax) / 2;
float ycenter = ((float)ymin + (float)ymax) / 2;
centerPos = new PointF(xcenter, ycenter);
switch (shapeTypeID)
{
case 1:
{
shapeType = ShapeType.Point;
ReadPointShp(br);
dataType = MySpaceDataType.MyPoint;
break;
}
case 3:
{
shapeType = ShapeType.Polyline;
ReadPolyLineShp(br);
dataType = MySpaceDataType.MyPolyLine;
break;
}
case 5:
{
shapeType = ShapeType.Polygon;
ReadPolygonShp(br);
dataType = MySpaceDataType.MyPolygon;
break;
}
default:
{
shapeType = ShapeType.NullShape;
break;
}
}
}
/// <summary>
/// 复制渲染方式
/// </summary>
/// <param name="from"></param>
/// <returns></returns>
public virtual void CopyRenderer(Renderer from)
{
this.datatype = from.DataType;
}
