/// <summary>
/// New page
/// </summary>
public PageBoundary()
{
/// Text message to indicate current status
textMessage.TextColor = Color.White;
textMessage.Text = "[Boundary]";
/// Content view of this page
Content = new StackLayout()
{
VerticalOptions = LayoutOptions.Center,
Children =
{
textMessage,
}
};
try
{
if (isBound != true)
{
if (serviceState == ServiceState.Enabled)
{
/// Set initial position
Coordinate center;
center.Latitude = 10.1234;
center.Longitude = 20.1234;
/// Set radius value to detect out of boundary
double radius = 50.0;
/// Create circle boundary
/// <param name="center">The coordinates which constitute the center of the circular boundary.</param>
/// <param name="radius">The radius value of the circular boundary.</param>
circle = new CircleBoundary(center, radius);
/// Add circle boundary to detect zone changed
locator.AddBoundary(circle);
/// Add ZoneChanged event
locator.ZoneChanged += LocatorZoneChanged;
isBound = true;
}
else
{
textMessage.Text = "[Boundary]\nService temporarily unavailable.\nPlease retry after service enabled";
}
}
}
catch (Exception ex)
{
/// Exception handling
textMessage.Text = "[Boundary] Exception \n" + ex.Message;
}
}
/// <summary>
/// Button event to set location boundary
/// </summary>
/// <param name="sender">object</param>
/// <param name="e">EventArgs</param>
private void ButtonBoundaryClicked(object sender, EventArgs e)
{
/// Set initial position
Coordinate center;
center.Latitude = 10.1234;
center.Longitude = 20.1234;
/// Set radius value to detect out of boundary
double radius = 50.0;
try
{
if (isBound == true)
{
/// Cancel boundary
CancelBoundary();
textMessage.Text = "";
}
else
{
buttonBoundary.Text = "Cancel location boundary";
isBound = true;
/// Create circle boundary
/// <param name="center">The coordinates which constitute the center of the circular boundary.</param>
/// <param name="radius">The radius value of the circular boundary.</param>
circle = new CircleBoundary(center, radius);
/// Add circle boundary to detect zone changed
locator.AddBoundary(circle);
/// Add ZoneChanged event
locator.ZoneChanged += Locator_ZoneChanged;
}
}
catch (Exception ex)
{
/// Exception handling
textMessage.Text = "[Boundary]\n Exception : " + ex.Message;
}
}
public void RunQuery()
{
// ��ȡ��ͼӦ�ó��������̶���
MapApplication mapApi = HostMapApplicationServices.Application;
ProjectModel proj = mapApi.ActiveProject;
DrawingSet drawingSet = proj.DrawingSet;
//������ͼ�μ��߽�
proj.DrawingSet.ZoomExtents();
//ʹ��LocationCondition������һ����ѯ����
LocationCondition qryCondition = new LocationCondition ();
qryCondition.LocationType = LocationType.LocationInside ;
qryCondition.JoinOperator = JoinOperator .OperatorAnd ;
// ����Բ�߽�
CircleBoundary boundary = null;
PromptPointResult pointRes = Utility.AcadEditor.GetPoint("\nѡ��ԭ��: ");
if (pointRes.Status == PromptStatus.OK)
{
Point3d point = pointRes.Value;
PromptDistanceOptions distOptions = new PromptDistanceOptions("\nѡ��뾶: ");
distOptions.BasePoint = point;
distOptions.UseBasePoint = true;
distOptions.DefaultValue = 0.0;
PromptDoubleResult doubleRes = Utility.AcadEditor.GetDistance(distOptions);
if (doubleRes.Status == PromptStatus.OK)
{
double rad = doubleRes.Value;
boundary = new CircleBoundary(new Point3d(point.X, point.Y, 0.0), rad);
}
}
//
qryCondition.Boundary = boundary;
//����һ��������֧
QueryBranch qryBranch = QueryBranch.Create ();
qryBranch.JoinOperator = JoinOperator.OperatorAnd;
qryBranch.AppendOperand(qryCondition);
////ʹ��PropertyCondition������һ�����Բ�ѯ����(LWPOLYLINE)
PropertyCondition propCondition= new PropertyCondition();
//JoinOperator.OperatorAnd, PropertyType.EntityType, ConditionOperator.ConditionEqual, "LWPOLYLINE";
propCondition.JoinOperator = JoinOperator.OperatorAnd ;
propCondition.PropertyType = PropertyType.EntityType ;
propCondition.ConditionOperator = ConditionOperator.ConditionEqual ;
propCondition.Value = "LWPOLYLINE";
// ͨ��QueryBranch�Ĺ��캯��������һ��������ѯ��֧��
QueryBranch subBranch = new QueryBranch(JoinOperator.OperatorAnd);
// ����һ�����в�ѯ�����ͷ�֧�IJ�ѯ����
subBranch.AppendOperand(propCondition);
qryBranch.AppendOperand(subBranch);
// ����һ����ѯ��
QueryModel qryModel = proj.CreateQuery (true);
// ��ɲ�ѯ�Ķ��塣
qryModel.Define (qryBranch);
//���û���ģʽ
qryModel.Mode = QueryType.QueryDraw;
//�����ѯ
qryModel.Define(qryBranch);
//ִ�в�ѯ��
qryModel.Run();
Utility.AcadEditor.WriteMessage("\n ��ɲ�ѯ ��");
}
