public void TrackCars(AxMap axMap1, string dataPath)
{
if (!InitMap(axMap1, dataPath))
{
return;
}
string filename = dataPath + "path.shp";
if (!File.Exists(filename))
{
MessageBox.Show("Path.shp wasn't found: " + dataPath);
return;
}
int handle = axMap1.AddLayerFromFilename(filename, tkFileOpenStrategy.fosAutoDetect, false);
var sf = axMap1.get_Shapefile(handle);
var service = new CarService(axMap1.Extents as Extents, sf, 20);
_carShapefile = CreateCarShapefile(service);
_carShapefile.Volatile = true;
_carShapefile.CollisionMode = tkCollisionMode.AllowCollisions;
axMap1.AddLayer(_carShapefile, true);
axMap1.ZoomToLayer(handle);
service.StateChanged += ServiceStateChanged;
}
// <summary>
// Creates a shapefile holding polygons with holes
// </summary>
public void PolygonsWithHoles(AxMap axMap1)
{
axMap1.Projection = tkMapProjection.PROJECTION_NONE;
var sf = new Shapefile();
bool result = sf.CreateNewWithShapeID("", ShpfileType.SHP_POLYGON);
if (!result)
{
MessageBox.Show(sf.ErrorMsg[sf.LastErrorCode]);
}
else
{
double xMin = 0.0;
double yMin = 0.0;
double xMax = 1000.0;
double yMax = 1000.0;
Random rnd = new Random(DateTime.Now.Millisecond);
// builds 10 polygons
for (int i = 0; i < 40; i++)
{
double xCenter = xMin + (xMax - xMin) * rnd.NextDouble();
double yCenter = yMin + (yMax - yMin) * rnd.NextDouble();
// random radius from 10 to 100
double radius = 10 + rnd.NextDouble() * 90;
var shp = new Shape();
shp.Create(ShpfileType.SHP_POLYGON);
// polygon must have clockwise order of points (first argument - true)
this.AddRing(true, xCenter, yCenter, radius, ref shp);
// holes must have counter-clockwise order of points (fale for the last argument)
this.AddRing(false, xCenter + radius / 2.0, yCenter, radius / 4.0, ref shp);
this.AddRing(false, xCenter - radius / 2.0, yCenter, radius / 4.0, ref shp);
this.AddRing(false, xCenter, yCenter + radius / 2.0, radius / 4.0, ref shp);
this.AddRing(false, xCenter, yCenter - radius / 2.0, radius / 4.0, ref shp);
for (int j = 0; j < shp.NumParts; j++)
{
Debug.Print("Part is clocwise: " + shp.PartIsClockWise[j]);
}
Debug.Print("Shape is valid: " + shp.IsValid);
if (!shp.IsValid)
{
Debug.Print("Reason: " + shp.IsValidReason);
}
sf.EditInsertShape(shp, ref i);
}
axMap1.AddLayer(sf, true);
axMap1.ZoomToLayer(0);
sf.SaveAs(@"c:\polygons.shp", null);
}
}
public bool ZoomToLayer(string name)
{
ILayer zoomToLayer = MapControlTools.Layers.Where(m => m.Name == name).FirstOrDefault();
if (zoomToLayer == null)
{
return(false);
}
if (zoomToLayer.GetType() == typeof(ResTBDamagePotentialLayer))
{
AxMap.ZoomToLayer(((ResTBDamagePotentialLayer)zoomToLayer).PointHandle);
}
else if (zoomToLayer.GetType() == typeof(ResTBRiskMapLayer))
{
AxMap.ZoomToLayer(((ResTBRiskMapLayer)zoomToLayer).PointHandle);
}
else
{
AxMap.ZoomToLayer(zoomToLayer.Handle);
}
return(true);
}
public void ZoomToLayer(int layerHandle)
{
_axmap.ZoomToLayer(layerHandle);
}
public static void ZoomToLayer(AxMap map, int layerHandle)
{
map.ZoomToLayer(layerHandle);
}
/// <summary>
/// Creates a polygon shapefile by placing 100 circles randomly.
/// </summary>
public void CreatePolygonShapefile(AxMap axMap1)
{
axMap1.Projection = tkMapProjection.PROJECTION_NONE;
var sf = new Shapefile();
bool result = sf.CreateNewWithShapeID("", ShpfileType.SHP_POLYGON);
if (!result)
{
MessageBox.Show(sf.ErrorMsg[sf.LastErrorCode]);
}
else
{
double xMin = 0.0;
double yMin = 0.0;
double xMax = 1000.0;
double yMax = 1000.0;
var rnd = new Random(DateTime.Now.Millisecond);
int fldX = sf.EditAddField("x", FieldType.DOUBLE_FIELD, 9, 12);
int fldY = sf.EditAddField("y", FieldType.DOUBLE_FIELD, 9, 12);
int fldArea = sf.EditAddField("area", FieldType.DOUBLE_FIELD, 9, 12);
// In a loop we are creating 100 different points using the box established above.
for (int i = 0; i < 100; i++)
{
double xCenter = xMin + (xMax - xMin) * rnd.NextDouble();
double yCenter = yMin + (yMax - yMin) * rnd.NextDouble();
// random radius from 10 to 100
double radius = 10 + rnd.NextDouble() * 90;
// polygons must be clockwise
Shape shp = new Shape();
shp.Create(ShpfileType.SHP_POLYGON);
for (int j = 0; j < 37; j++)
{
Point pnt = new Point();
pnt.x = xCenter + radius * Math.Cos(j * Math.PI / 18);
pnt.y = yCenter - radius * Math.Sin(j * Math.PI / 18);
shp.InsertPoint(pnt, ref j);
}
Debug.Print(shp.Extents.ToDebugString());
sf.EditInsertShape(shp, ref i);
sf.EditCellValue(fldX, i, xCenter.ToString());
sf.EditCellValue(fldY, i, yCenter.ToString());
sf.EditCellValue(fldArea, i, Math.PI * radius * radius);
}
int handle = axMap1.AddLayer(sf, true);
string extents = sf.Extents.ToDebugString();
axMap1.ZoomToLayer(handle);
sf.Categories.Generate(fldArea, tkClassificationType.ctNaturalBreaks, 7);
ColorScheme scheme = new ColorScheme();
scheme.SetColors2(tkMapColor.Wheat, tkMapColor.Salmon);
sf.Categories.ApplyColorScheme(tkColorSchemeType.ctSchemeGraduated, scheme);
axMap1.Redraw();
// save if needed
//sf.SaveAs(@"c:\polygons.shp", null);
}
}
