private void menu_Click(object sender, EventArgs e)
{
FormContour Frm = new FormContour();
Frm.layers = App.Map.GetRasterLayers();
if (Frm.layers.GetLength(0) <= 0)
{
MessageBox.Show("No raster layer found!");
return;
}
if (Frm.ShowDialog() == DialogResult.OK)
{
IMapFeatureLayer fl = App.Map.Layers.Add(Frm.Contours);
fl.LegendText = Frm.LayerName + " - Contours";
int numlevs = Frm.lev.GetLength(0);
switch (Frm.contourtype)
{
case (Contour.ContourType.Line):
{
LineScheme ls = new LineScheme();
ls.Categories.Clear();
for (int i = 0; i < Frm.color.GetLength(0); i++)
{
LineCategory lc = new LineCategory(Frm.color[i], 2.0);
lc.FilterExpression = "[Value] = " + Frm.lev[i].ToString();
lc.LegendText = Frm.lev[i].ToString();
ls.AddCategory(lc);
}
fl.Symbology = ls;
}
break;
case (Contour.ContourType.Polygon):
{
PolygonScheme ps = new PolygonScheme();
ps.Categories.Clear();
for (int i = 0; i < Frm.color.GetLength(0); i++)
{
PolygonCategory pc = new PolygonCategory(Frm.color[i], Color.Transparent, 0);
pc.FilterExpression = "[Lev] = " + i.ToString();
pc.LegendText = Frm.lev[i].ToString() + " - " + Frm.lev[i + 1].ToString();
ps.AddCategory(pc);
}
fl.Symbology = ps;
}
break;
}
}
}
/// <summary>
/// Creates a new instance of PointScheme with no categories added to the list yet.
/// </summary>
public LineScheme()
{
Configure();
LineCategory def = new LineCategory();
Categories.Add(def);
}
/// <summary>
/// Uses the settings on this scheme to create a random category.
/// </summary>
/// <returns>A new IFeatureCategory</returns>
public override IFeatureCategory CreateRandomCategory(string filterExpression)
{
LineCategory result = new LineCategory();
Color fillColor = CreateRandomColor();
result.Symbolizer = new LineSymbolizer(fillColor, 2);
result.FilterExpression = filterExpression;
result.LegendText = filterExpression;
return(result);
}
/// <summary>
/// Calculates the unique colors as a scheme
/// </summary>
/// <param name="fs">The featureset with the data Table definition</param>
/// <param name="uniqueField">The unique field</param>
public Hashtable GenerateUniqueColors(IFeatureSet fs, string uniqueField)
{
Hashtable result = new Hashtable(); // a hashtable of colors
DataTable dt = fs.DataTable;
ArrayList vals = new ArrayList();
int i = 0;
foreach (DataRow row in dt.Rows)
{
if (uniqueField != "FID")
{
if (vals.Contains(row[uniqueField]) == false)
{
vals.Add(row[uniqueField]);
}
}
else
{
vals.Add(i);
i++;
}
}
Random rnd = new Random();
foreach (object item in vals)
{
Color c = rnd.NextColor();
while (result.ContainsKey(c))
{
c = rnd.NextColor();
}
LineCategory cat = new LineCategory(c, 1);
string flt = "[" + uniqueField + "] = ";
if (uniqueField == "FID")
{
flt += item;
}
else
{
if (dt.Columns[uniqueField].DataType == typeof(string))
{
flt += "'" + item + "'";
}
else
{
flt += item.ToString();
}
}
cat.FilterExpression = flt;
Categories.Add(cat);
result.Add(c, item);
}
return(result);
}
/// <summary>
/// Creates a new instance of PointScheme with no categories added to the list yet.
/// </summary>
public LineScheme()
{
Configure();
LineCategory def = new LineCategory();
Categories.Add(def);
}
/// <summary>
/// Calculates the unique colors as a scheme
/// </summary>
/// <param name="fs">The featureset with the data Table definition</param>
/// <param name="uniqueField">The unique field</param>
public Hashtable GenerateUniqueColors(IFeatureSet fs, string uniqueField)
{
Hashtable result = new Hashtable(); // a hashtable of colors
DataTable dt = fs.DataTable;
ArrayList vals = new ArrayList();
int i = 0;
foreach (DataRow row in dt.Rows)
{
if (uniqueField != "FID")
{
if (vals.Contains(row[uniqueField]) == false)
{
vals.Add(row[uniqueField]);
}
}
else
{
vals.Add(i);
i++;
}
}
Random rnd = new Random();
foreach (object item in vals)
{
Color c = rnd.NextColor();
while (result.ContainsKey(c))
{
c = rnd.NextColor();
}
LineCategory cat = new LineCategory(c, 1);
string flt = "[" + uniqueField + "] = ";
if (uniqueField == "FID")
{
flt += item;
}
else
{
if (dt.Columns[uniqueField].DataType == typeof(string))
{
flt += "'" + item + "'";
}
else
{
flt += item.ToString();
}
}
cat.FilterExpression = flt;
Categories.Add(cat);
result.Add(c, item);
}
return result;
}
/// <summary>
/// Uses the settings on this scheme to create a random category.
/// </summary>
/// <returns>A new IFeatureCategory</returns>
public override IFeatureCategory CreateRandomCategory(string filterExpression)
{
LineCategory result = new LineCategory();
Color fillColor = CreateRandomColor();
result.Symbolizer = new LineSymbolizer(fillColor, 2);
result.FilterExpression = filterExpression;
result.LegendText = filterExpression;
return result;
}
