public MgdLayer CreateBufferLayer(MgResourceService resourceService, MgResourceIdentifier bufferFeatureResId, String sessionId)
{
// Load the layer definition template into
// a XmlDocument object, find the "ResourceId" element, and
// modify its content to reference the temporary
// feature source.
XmlDocument doc = new XmlDocument();
doc.LoadXml(Layers.BufferLayerDefinition);
XmlNode featureSourceNode = doc.GetElementsByTagName("ResourceId")[0];
featureSourceNode.InnerText = bufferFeatureResId.ToString();
// Get the updated layer definition from the XmlDocument
// and save it to the session repository using the
// ResourceService object.
MgByteSource byteSource = null;
using (MemoryStream ms = new MemoryStream())
{
doc.Save(ms);
ms.Position = 0L;
//Note we do this to ensure our XML content is free of any BOM characters
byte[] layerDefinition = ms.ToArray();
Encoding utf8 = Encoding.UTF8;
String layerDefStr = new String(utf8.GetChars(layerDefinition));
layerDefinition = new byte[layerDefStr.Length - 1];
int byteCount = utf8.GetBytes(layerDefStr, 1, layerDefStr.Length - 1, layerDefinition, 0);
byteSource = new MgByteSource(layerDefinition, layerDefinition.Length);
byteSource.SetMimeType(MgMimeType.Xml);
}
MgResourceIdentifier tempLayerResId = new MgResourceIdentifier("Session:" + sessionId + "//Buffer.LayerDefinition");
resourceService.SetResource(tempLayerResId, byteSource.GetReader(), null);
// Create an MgLayer object based on the new layer definition
// and return it to the caller.
MgdLayer bufferLayer = new MgdLayer(tempLayerResId, resourceService);
bufferLayer.SetName("Buffer");
bufferLayer.SetLegendLabel("Buffer");
bufferLayer.SetDisplayInLegend(true);
bufferLayer.SetSelectable(false);
return(bufferLayer);
}
public MgdLayer CreateBufferLayer(MgResourceService resourceService, MgResourceIdentifier bufferFeatureResId, String sessionId)
{
// Load the layer definition template into
// a XmlDocument object, find the "ResourceId" element, and
// modify its content to reference the temporary
// feature source.
XmlDocument doc = new XmlDocument();
doc.LoadXml(Layers.BufferLayerDefinition);
XmlNode featureSourceNode = doc.GetElementsByTagName("ResourceId")[0];
featureSourceNode.InnerText = bufferFeatureResId.ToString();
// Get the updated layer definition from the XmlDocument
// and save it to the session repository using the
// ResourceService object.
MgByteSource byteSource = null;
using (MemoryStream ms = new MemoryStream())
{
doc.Save(ms);
ms.Position = 0L;
//Note we do this to ensure our XML content is free of any BOM characters
byte[] layerDefinition = ms.ToArray();
Encoding utf8 = Encoding.UTF8;
String layerDefStr = new String(utf8.GetChars(layerDefinition));
layerDefinition = new byte[layerDefStr.Length - 1];
int byteCount = utf8.GetBytes(layerDefStr, 1, layerDefStr.Length - 1, layerDefinition, 0);
byteSource = new MgByteSource(layerDefinition, layerDefinition.Length);
byteSource.SetMimeType(MgMimeType.Xml);
}
MgResourceIdentifier tempLayerResId = new MgResourceIdentifier("Session:" + sessionId + "//Buffer.LayerDefinition");
resourceService.SetResource(tempLayerResId, byteSource.GetReader(), null);
// Create an MgLayer object based on the new layer definition
// and return it to the caller.
MgdLayer bufferLayer = new MgdLayer(tempLayerResId, resourceService);
bufferLayer.SetName("Buffer");
bufferLayer.SetLegendLabel("Buffer");
bufferLayer.SetDisplayInLegend(true);
bufferLayer.SetSelectable(false);
return bufferLayer;
}
public DigitizingAndRedlining(IMapViewer viewer)
{
InitializeComponent();
_viewer = viewer;
_geomFact = new MgGeometryFactory();
_wktRW = new MgWktReaderWriter();
_agfRW = new MgAgfReaderWriter();
this.Title = "Digitizing and Redlining";
_viewer.PropertyChanged += OnViewerPropertyChanged;
MgMapBase map = _viewer.GetMap();
MgLayerCollection layers = map.GetLayers();
if (layers.IndexOf("Redline") >= 0)
{
_redlineLayer = (MgdLayer)layers.GetItem("Redline");
}
CheckDigitizingState();
}
public DigitizingAndRedlining(IMapViewer viewer)
{
InitializeComponent();
_viewer = viewer;
_geomFact = new MgGeometryFactory();
_wktRW = new MgWktReaderWriter();
_agfRW = new MgAgfReaderWriter();
this.Title = "Digitizing and Redlining";
_viewer.PropertyChanged += OnViewerPropertyChanged;
MgMapBase map = _viewer.GetMap();
MgLayerCollection layers = map.GetLayers();
if (layers.IndexOf("Redline") >= 0)
{
_redlineLayer = (MgdLayer)layers.GetItem("Redline");
}
CheckDigitizingState();
}
private void btnCreateBuffer_Click(object sender, EventArgs e)
{
MgSelectionBase selection = _viewer.GetSelection();
MgReadOnlyLayerCollection layers = selection.GetLayers();
if (layers == null)
{
MessageBox.Show("Select a parcel");
return;
}
MgLayerBase parcels = null;
for (int i = 0; i < layers.GetCount(); i++)
{
MgLayerBase layer = layers.GetItem(i);
if (layer.Name == "Parcels")
{
parcels = layer;
break;
}
}
if (parcels == null)
{
MessageBox.Show("Select a parcel");
return;
}
int bufferRingSize = 100; // measured in metres
int bufferRingCount = 5;
// Set up some objects for coordinate conversion
MgMapBase map = _viewer.GetMap();
MgLayerCollection mapLayers = map.GetLayers();
MgMapViewerProvider provider = _viewer.GetProvider();
MgResourceService resourceService = (MgResourceService)provider.CreateService(MgServiceType.ResourceService);
//Casting to MgdFeatureService because we want to use convenience APIs
MgFeatureService featureService = (MgdFeatureService)provider.CreateService(MgServiceType.FeatureService);
String mapWktSrs = map.GetMapSRS();
MgAgfReaderWriter agfReaderWriter = new MgAgfReaderWriter();
MgWktReaderWriter wktReaderWriter = new MgWktReaderWriter();
MgCoordinateSystemFactory coordinateSystemFactory = new MgCoordinateSystemFactory();
MgCoordinateSystem srs = coordinateSystemFactory.Create(mapWktSrs);
MgMeasure srsMeasure = srs.GetMeasure();
string sessionId = Guid.NewGuid().ToString();
BufferHelper helper = new BufferHelper();
// Check for a buffer layer. If it exists, delete
// the current features.
// If it does not exist, create a feature source and
// a layer to hold the buffer.
MgdLayer bufferLayer = null;
int layerIndex = mapLayers.IndexOf("Buffer");
if (layerIndex < 0)
{
// The layer does not exist and must be created.
MgResourceIdentifier bufferFeatureResId = new MgResourceIdentifier("Session:" + sessionId + "//Buffer.FeatureSource");
helper.CreateBufferFeatureSource(featureService, mapWktSrs, bufferFeatureResId);
bufferLayer = helper.CreateBufferLayer(resourceService, bufferFeatureResId, sessionId);
mapLayers.Insert(0, bufferLayer);
}
else
{
bufferLayer = (MgdLayer)map.GetLayers().GetItem(layerIndex);
bufferLayer.DeleteFeatures("ID like '%'");
}
// Get the selected features from the MgSelection object
MgFeatureReader featureReader = selection.GetSelectedFeatures(parcels, parcels.GetFeatureClassName(), false);
// Process each item in the MgFeatureReader. Get the
// geometries from all the selected features and
// merge them into a single geometry.
MgGeometryCollection inputGeometries = new MgGeometryCollection();
while (featureReader.ReadNext())
{
MgByteReader featureGeometryData = featureReader.GetGeometry(parcels.GetFeatureGeometryName());
MgGeometry featureGeometry = agfReaderWriter.Read(featureGeometryData);
inputGeometries.Add(featureGeometry);
}
MgGeometryFactory geometryFactory = new MgGeometryFactory();
MgGeometry mergedGeometries = geometryFactory.CreateMultiGeometry(inputGeometries);
// Add buffer features to the temporary feature source.
// Create multiple concentric buffers to show area.
// If the stylization for the layer draws the features
// partially transparent, the concentric rings will be
// progressively darker towards the center.
// The stylization is set in the layer template file, which
// is used in function CreateBufferLayer().
for (int bufferRing = 0; bufferRing < bufferRingCount; bufferRing++)
{
double bufferDist = srs.ConvertMetersToCoordinateSystemUnits(bufferRingSize * (bufferRing + 1));
MgGeometry bufferGeometry = mergedGeometries.Buffer(bufferDist, srsMeasure);
MgPropertyCollection properties = new MgPropertyCollection();
properties.Add(new MgGeometryProperty("BufferGeometry", agfReaderWriter.Write(bufferGeometry)));
MgFeatureReader fr = bufferLayer.InsertFeatures(properties);
fr.Close();
}
bufferLayer.SetVisible(true);
bufferLayer.ForceRefresh();
bufferLayer.SetDisplayInLegend(true);
MessageBox.Show("Buffer created");
_viewer.RefreshMap();
IMapLegend legend = Shell.Instance.Legend;
if (legend != null)
{
legend.RefreshLegend();
}
}
private void CreateRedlineLayer()
{
MgMapBase map = mgMapViewer1.GetMap();
MgdServiceFactory fact = new MgdServiceFactory();
MgdFeatureService featSvc = (MgdFeatureService)fact.CreateService(MgServiceType.FeatureService);
MgResourceService resSvc = (MgResourceService)fact.CreateService(MgServiceType.ResourceService);
//Note that mg-desktop does not have a concept of sessions like the
//official MapGuide API, but it *does* allow session-based resources
//as a way of having temporary resources. Such resources will reside
//in a special directory for session resources (specified in Platform.ini)
//
//You can plug whatever string as the session id, but the resource identifier
//must satisfy the session id pattern:
//
// Session:<session id string>//Path/To/Your.ResourceType
//
//These files are removed with MgPlatform.Terminate(), which is called in this
//application as part of the exiting process.
string sessionId = Guid.NewGuid().ToString();
MgResourceIdentifier fsId = new MgResourceIdentifier("Session:" + sessionId + "//Redline.FeatureSource");
MgResourceIdentifier ldfId = new MgResourceIdentifier("Session:" + sessionId + "//Redline.LayerDefinition");
//Create our point redline schema. It looks like this:
//
// Default
// Redline
// ID (int32, autogenerated)
// Geometry (coordinate system same as map
string featureClass = "Default:Redline";
string geometry = "Geometry";
MgFeatureSchema schema = new MgFeatureSchema("Default", "Redline schema");
MgClassDefinition cls = new MgClassDefinition();
cls.Name = "Redline";
MgDataPropertyDefinition id = new MgDataPropertyDefinition("ID");
id.DataType = MgPropertyType.Int32;
id.SetAutoGeneration(true);
MgGeometricPropertyDefinition geom = new MgGeometricPropertyDefinition(geometry);
geom.SpatialContextAssociation = "Default";
geom.GeometryTypes = MgFeatureGeometricType.Curve | MgFeatureGeometricType.Point | MgFeatureGeometricType.Solid | MgFeatureGeometricType.Surface;
MgPropertyDefinitionCollection clsProps = cls.GetProperties();
clsProps.Add(id);
clsProps.Add(geom);
MgPropertyDefinitionCollection idProps = cls.GetIdentityProperties();
idProps.Add(id);
cls.DefaultGeometryPropertyName = geometry;
MgClassDefinitionCollection classes = schema.GetClasses();
classes.Add(cls);
//Create the feature source with this schema. We use the map's
//coordinate system for the feature source to ensure features
//that we create, will line up with the map
MgFileFeatureSourceParams create = new MgFileFeatureSourceParams("OSGeo.SDF", "Default", map.GetMapSRS(), schema);
featSvc.CreateFeatureSource(fsId, create);
//Then create the layer definition. RedlineLayer.xml contains the template
string xml = string.Format(File.ReadAllText("RedlineLayer.xml"), fsId.ToString(), featureClass, geometry);
var bytes = Encoding.UTF8.GetBytes(xml);
MgByteSource source = new MgByteSource(bytes, bytes.Length);
resSvc.SetResource(ldfId, source.GetReader(), null);
//Now create the runtime layer and add to map
_pointLayer = new MgdLayer(ldfId, resSvc);
_pointLayer.LegendLabel = "Redlining";
_pointLayer.Name = "Redline";
_pointLayer.Visible = true;
_pointLayer.Selectable = true;
_pointLayer.DisplayInLegend = true;
var layers = map.GetLayers();
layers.Insert(0, _pointLayer);
}
private void btnFindFeaturesInBuffer_Click(object sender, EventArgs e)
{
MgSelectionBase selection = _viewer.GetSelection();
MgReadOnlyLayerCollection selectedLayers = selection.GetLayers();
if (selectedLayers == null)
{
MessageBox.Show("Select a parcel");
return;
}
MgLayerBase parcels = null;
for (int i = 0; i < selectedLayers.GetCount(); i++)
{
MgLayerBase layer = selectedLayers.GetItem(i);
if (layer.Name == "Parcels")
{
parcels = layer;
break;
}
}
if (parcels == null)
{
MessageBox.Show("Select a parcel");
return;
}
int bufferRingSize = 500; // measured in metres
// Set up some objects for coordinate conversion
MgMapBase map = _viewer.GetMap();
MgLayerCollection mapLayers = map.GetLayers();
MgMapViewerProvider provider = _viewer.GetProvider();
MgResourceService resourceService = (MgResourceService)provider.CreateService(MgServiceType.ResourceService);
//Casting to MgdFeatureService because we want to use convenience APIs
MgFeatureService featureService = (MgdFeatureService)provider.CreateService(MgServiceType.FeatureService);
string sessionId = Guid.NewGuid().ToString();
String mapWktSrs = map.GetMapSRS();
MgAgfReaderWriter agfReaderWriter = new MgAgfReaderWriter();
MgWktReaderWriter wktReaderWriter = new MgWktReaderWriter();
MgCoordinateSystemFactory coordinateSystemFactory = new MgCoordinateSystemFactory();
MgCoordinateSystem srs = coordinateSystemFactory.Create(mapWktSrs);
MgMeasure srsMeasure = srs.GetMeasure();
// Check for a buffer layer. If it exists, delete
// the current features.
// If it does not exist, create a feature source and
// a layer to hold the buffer.
BufferHelper helper = new BufferHelper();
MgdLayer bufferLayer = null;
int layerIndex = map.GetLayers().IndexOf("Buffer");
if (layerIndex < 0)
{
// The layer does not exist and must be created.
MgResourceIdentifier bufferFeatureResId = new MgResourceIdentifier("Session:" + sessionId + "//Buffer.FeatureSource");
helper.CreateBufferFeatureSource(featureService, mapWktSrs, bufferFeatureResId);
bufferLayer = helper.CreateBufferLayer(resourceService, bufferFeatureResId, sessionId);
map.GetLayers().Insert(0, bufferLayer);
}
else
{
bufferLayer = (MgdLayer)map.GetLayers().GetItem(layerIndex);
bufferLayer.DeleteFeatures("ID like '%'");
}
// Check for a parcel marker layer. If it exists, delete
// the current features.
// If it does not exist, create a feature source and
// a layer to hold the parcel markers.
MgdLayer parcelMarkerLayer = null;
layerIndex = map.GetLayers().IndexOf("ParcelMarker");
if (layerIndex < 0)
{
MgResourceIdentifier parcelFeatureResId = new MgResourceIdentifier("Session:" + sessionId + "//ParcelMarker.FeatureSource");
helper.CreateParcelMarkerFeatureSource(featureService, mapWktSrs, parcelFeatureResId);
parcelMarkerLayer = helper.CreateParcelMarkerLayer(resourceService, parcelFeatureResId, sessionId);
map.GetLayers().Insert(0, parcelMarkerLayer);
}
else
{
parcelMarkerLayer = (MgdLayer)map.GetLayers().GetItem(layerIndex);
parcelMarkerLayer.DeleteFeatures("ID like '%'");
}
// Check each layer in the selection.
for (int i = 0; i < selectedLayers.GetCount(); i++)
{
// Only check selected features in the Parcels layer.
MgdLayer layer = (MgdLayer)selectedLayers.GetItem(i);
if (layer.GetName() == "Parcels")
{
string geomName = layer.GetFeatureGeometryName();
System.Diagnostics.Trace.TraceInformation("Marking all parcels inside the buffer that are of type 'MFG'");
MgFeatureReader featureReader = selection.GetSelectedFeatures(layer, layer.GetFeatureClassName(), false);
// Process each item in the MgFeatureReader. Get the
// geometries from all the selected features and
// merge them into a single geometry.
MgGeometryCollection inputGeometries = new MgGeometryCollection();
while (featureReader.ReadNext())
{
MgByteReader featureGeometryData = featureReader.GetGeometry(geomName);
MgGeometry featureGeometry = agfReaderWriter.Read(featureGeometryData);
inputGeometries.Add(featureGeometry);
}
MgGeometryFactory geometryFactory = new MgGeometryFactory();
MgGeometry mergedGeometries = geometryFactory.CreateMultiGeometry(inputGeometries);
// Create a buffer from the merged geometries
double bufferDist = srs.ConvertMetersToCoordinateSystemUnits(bufferRingSize);
MgGeometry bufferGeometry = mergedGeometries.Buffer(bufferDist, srsMeasure);
// Create a filter to select parcels within the buffer. Combine
// a basic filter and a spatial filter to select all parcels
// within the buffer that are of type "MFG".
MgFeatureQueryOptions queryOptions = new MgFeatureQueryOptions();
queryOptions.SetFilter("RTYPE = 'MFG'");
queryOptions.SetSpatialFilter(geomName, bufferGeometry, MgFeatureSpatialOperations.Inside);
featureReader = layer.SelectFeatures(queryOptions);
// Get the features from the feature source,
// determine the centroid of each selected feature, and
// add a point to the ParcelMarker layer to mark the
// centroid.
// Collect all the points into an MgFeatureCommandCollection,
// so they can all be added in one operation.
MgFeatureCommandCollection parcelMarkerCommands = new MgFeatureCommandCollection();
int inserted = 0;
while (featureReader.ReadNext())
{
MgByteReader byteReader = featureReader.GetGeometry(geomName);
MgGeometry geometry = agfReaderWriter.Read(byteReader);
MgPoint point = geometry.GetCentroid();
// Create an insert command for this parcel.
MgPropertyCollection properties = new MgPropertyCollection();
properties.Add(new MgGeometryProperty("ParcelLocation", agfReaderWriter.Write(point)));
//parcelMarkerCommands.Add(new MgInsertFeatures("ParcelMarkerClass", properties));
MgFeatureReader fr = parcelMarkerLayer.InsertFeatures(properties);
fr.Close();
inserted++;
}
featureReader.Close();
if (inserted == 0)
{
MessageBox.Show("No parcels within the buffer area match.");
return;
}
// Create a feature in the buffer feature source to show the area covered by the buffer.
MgPropertyCollection props = new MgPropertyCollection();
props.Add(new MgGeometryProperty("BufferGeometry", agfReaderWriter.Write(bufferGeometry)));
bufferLayer.InsertFeatures(props);
// Ensure that the buffer layer is visible and in the legend.
bufferLayer.SetVisible(true);
bufferLayer.ForceRefresh();
bufferLayer.SetDisplayInLegend(true);
parcelMarkerLayer.SetVisible(true);
parcelMarkerLayer.ForceRefresh();
MessageBox.Show("Done");
_viewer.RefreshMap();
IMapLegend legend = Shell.Instance.Legend;
if (legend != null)
{
legend.RefreshLegend();
}
}
}
}
public override Mapping.RuntimeMapLayer CreateMapLayer(Mapping.RuntimeMap parent, ObjectModels.LayerDefinition.ILayerDefinition ldf, bool suppressErrors)
{
var impl = parent as LocalRuntimeMap;
if (impl == null)
throw new ArgumentException("Instance is not a LocalRuntimeMap", "map"); //LOCALIZEME
var ldfId = new MgResourceIdentifier(ldf.ResourceID);
var layer = new MgdLayer(ldfId, GetResourceService());
return new LocalRuntimeMapLayer(impl, layer, this, suppressErrors);
}
private void CreateDebugFeatureSource()
{
var id = new MgDataPropertyDefinition("ID"); //NOXLATE
id.DataType = MgPropertyType.Int32;
id.Nullable = false;
id.SetAutoGeneration(true);
var geom = new MgGeometricPropertyDefinition("Geometry"); //NOXLATE
geom.GeometryTypes = MgFeatureGeometricType.Point;
geom.SpatialContextAssociation = "MapCs"; //NOXLATE
var cls = new MgClassDefinition();
cls.Name = "Debug"; //NOXLATE
var props = cls.GetProperties();
props.Add(id);
props.Add(geom);
var idProps = cls.GetIdentityProperties();
idProps.Add(id);
cls.DefaultGeometryPropertyName = "Geometry"; //NOXLATE
var schema = new MgFeatureSchema("Default", "Default schema"); //NOXLATE
var classes = schema.GetClasses();
classes.Add(cls);
//We can make anything up here, there's no real concept of sessions
var sessionId = Guid.NewGuid().ToString();
var debugFsId = new MgResourceIdentifier("Session:" + sessionId + "//Debug" + Guid.NewGuid().ToString() + ".FeatureSource"); //NOXLATE
var createSdf = new MgCreateSdfParams("MapCs", _map.GetMapSRS(), schema); //NOXLATE
var featureSvc = (MgdFeatureService)fact.CreateService(MgServiceType.FeatureService);
var resSvc = (MgResourceService)fact.CreateService(MgServiceType.ResourceService);
featureSvc.CreateFeatureSource(debugFsId, createSdf);
byte[] bytes = Encoding.UTF8.GetBytes(string.Format(Debug.DebugLayer, debugFsId.ToString(), "Default:Debug", "Geometry")); //NOXLATE
var source = new MgByteSource(bytes, bytes.Length);
var debugLayerId = new MgResourceIdentifier("Session:" + sessionId + "//" + debugFsId.Name + ".LayerDefinition"); //NOXLATE
var breader = source.GetReader();
resSvc.SetResource(debugLayerId, breader, null);
_debugLayer = new MgdLayer(debugLayerId, resSvc);
_debugLayer.SetLegendLabel("Debug Layer"); //NOXLATE
_debugLayer.SetVisible(true);
_debugLayer.SetDisplayInLegend(true);
var mapLayers = _map.GetLayers();
mapLayers.Insert(0, _debugLayer);
UpdateCenterDebugPoint();
}
private void btnShowBuildings_Click(object sender, EventArgs e)
{
MgMapViewerProvider provider = _viewer.GetProvider();
MgResourceService resourceService = (MgResourceService)provider.CreateService(MgServiceType.ResourceService);
string layerName = "RecentlyBuilt";
string legendLabel = "Built after 1980";
string groupName = "Analysis";
MgMapBase map = _viewer.GetMap();
MgLayerCollection layers = map.GetLayers();
MgLayerGroupCollection groups = map.GetLayerGroups();
if (layers.IndexOf(layerName) >= 0)
{
MessageBox.Show("Layer (" + layerName + ") already created");
return;
}
//NOTE: mg-desktop has no formal concept of a session repository, but we still
//support session-based resources as a form of temporary resource (for the duration
//of the application). Session ids in mg-desktop can be any arbitrary string
string sessionId = Guid.NewGuid().ToString();
XmlDocument domDocument = new XmlDocument();
domDocument.LoadXml(Layers.RecentlyBuilt);
// Get a list of all the <AreaRule><Filter> elements in
// the XML.
XmlNodeList nodes = domDocument.SelectNodes("//AreaRule/Filter");
// Find the correct node and change it
foreach (XmlNode node in nodes)
{
if (node.InnerText == "YRBUILT > 1950")
{
node.InnerText = "YRBUILT > 1980";
}
}
// Get a list of all the <LegendLabel> elements in the
// XML.
nodes = domDocument.SelectNodes("//LegendLabel");
// Find the correct node and change it
foreach (XmlNode node in nodes)
{
if (node.InnerText == "Built after 1950")
{
node.InnerText = "Built after 1980";
}
}
//Add the layer to the map
// TODO: Should probably validate this XML content
using (MemoryStream ms = new MemoryStream())
{
domDocument.Save(ms);
ms.Position = 0L;
//Note we do this to ensure our XML content is free of any BOM characters
byte[] layerDefinition = ms.ToArray();
Encoding utf8 = Encoding.UTF8;
String layerDefStr = new String(utf8.GetChars(layerDefinition));
layerDefinition = new byte[layerDefStr.Length - 1];
int byteCount = utf8.GetBytes(layerDefStr, 1, layerDefStr.Length - 1, layerDefinition, 0);
// Save the new layer definition to the session repository
MgByteSource byteSource = new MgByteSource(layerDefinition, layerDefinition.Length);
MgResourceIdentifier resourceID = new MgResourceIdentifier("Session:" + sessionId + "//" + layerName + ".LayerDefinition");
resourceService.SetResource(resourceID, byteSource.GetReader(), null);
//Insert this layer to our map
MgdLayer newLayer = new MgdLayer(resourceID, resourceService);
newLayer.Name = layerName;
newLayer.LegendLabel = legendLabel;
newLayer.DisplayInLegend = true;
newLayer.SetVisible(true);
layers.Insert(0, newLayer);
//Create analysis group if not already created
if (groups.IndexOf(groupName) < 0)
{
MgLayerGroup group = new MgLayerGroup(groupName);
group.LegendLabel = groupName;
group.DisplayInLegend = true;
groups.Add(group);
newLayer.Group = group;
}
//Turn off square footage if it exists
if (layers.IndexOf("SquareFootage") >= 0)
{
MgLayerBase layer = layers.GetItem("SquareFootage");
layer.SetVisible(false);
}
MessageBox.Show("Layer (" + layerName + ") created");
_viewer.RefreshMap();
IMapLegend legend = Shell.Instance.Legend;
if (legend != null)
legend.RefreshLegend();
}
}
private void btnCreatePointsOfInterest_Click(object sender, EventArgs e)
{
string layerName = "Points";
string legendLabel = "Points of Interest";
string groupName = "Analysis";
MgMapViewerProvider provider = _viewer.GetProvider();
MgResourceService resourceService = (MgResourceService)provider.CreateService(MgServiceType.ResourceService);
//We use MgdFeatureService instead of MgFeatureService as this sample demonstrates APIs unique to mg-desktop
MgdFeatureService featureService = (MgdFeatureService)provider.CreateService(MgServiceType.FeatureService);
MgMapBase map = _viewer.GetMap();
MgLayerCollection layers = map.GetLayers();
MgLayerGroupCollection groups = map.GetLayerGroups();
//NOTE: mg-desktop has no formal concept of a session repository, but we still
//support session-based resources as a form of temporary resource (for the duration
//of the application). Session ids in mg-desktop can be any arbitrary string
string sessionId = Guid.NewGuid().ToString();
if (layers.IndexOf(layerName) >= 0)
{
MessageBox.Show("Layer (" + layerName + ") already created");
return;
}
//---------------------------------------------------//
// Create a feature source with point data.
// (The Sheboygan sample data does not contain such data,
// so we"ll create it.)
// Create a feature class definition for the new feature source
MgClassDefinition classDefinition = new MgClassDefinition();
classDefinition.SetName("Points");
classDefinition.SetDescription("Feature class with point data.");
classDefinition.SetDefaultGeometryPropertyName("GEOM");
MgPropertyDefinitionCollection idProps = classDefinition.GetIdentityProperties();
MgPropertyDefinitionCollection clsProps = classDefinition.GetProperties();
// Create an identify property
MgDataPropertyDefinition identityProperty = new MgDataPropertyDefinition("KEY");
identityProperty.SetDataType(MgPropertyType.Int32);
identityProperty.SetAutoGeneration(true);
identityProperty.SetReadOnly(true);
// Add the identity property to the class definition
clsProps.Add(identityProperty);
idProps.Add(identityProperty);
// Create a name property
MgDataPropertyDefinition nameProperty = new MgDataPropertyDefinition("NAME");
nameProperty.SetDataType(MgPropertyType.String);
// Add the name property to the class definition
clsProps.Add(nameProperty);
// Create a geometry property
MgGeometricPropertyDefinition geometryProperty = new MgGeometricPropertyDefinition("GEOM");
geometryProperty.SetGeometryTypes(MgFeatureGeometricType.Point);
// Add the geometry property to the class definition
clsProps.Add(geometryProperty);
// Create a feature schema
MgFeatureSchema featureSchema = new MgFeatureSchema("PointSchema", "Point schema");
MgClassDefinitionCollection classes = featureSchema.GetClasses();
// Add the feature schema to the class definition
classes.Add(classDefinition);
// Create the feature source
String featureSourceName = "Library://Samples/DevGuide/Data/points.FeatureSource";
MgResourceIdentifier resourceIdentifier = new MgResourceIdentifier(featureSourceName);
//wkt = "LOCALCS[\"*XY-MT*\",LOCAL_DATUM[\"*X-Y*\",10000],UNIT[\"Meter\", 1],AXIS[\"X\",EAST],AXIS[\"Y\",NORTH]]";
String wkt = "GEOGCS[\"LL84\",DATUM[\"WGS84\",SPHEROID[\"WGS84\",6378137.000,298.25722293]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.01745329251994]]";
MgCreateSdfParams sdfParams = new MgCreateSdfParams("LatLong", wkt, featureSchema);
featureService.CreateFeatureSource(resourceIdentifier, sdfParams);
// We need to add some data to the sdf before using it. The spatial context
// reader must have an extent.
MgBatchPropertyCollection batchPropertyCollection = new MgBatchPropertyCollection();
MgWktReaderWriter wktReaderWriter = new MgWktReaderWriter();
MgAgfReaderWriter agfReaderWriter = new MgAgfReaderWriter();
MgGeometryFactory geometryFactory = new MgGeometryFactory();
// Make four points
batchPropertyCollection.Add(MakePoint("Point A", -87.727, 43.748, wktReaderWriter, agfReaderWriter));
batchPropertyCollection.Add(MakePoint("Point B", -87.728, 43.730, wktReaderWriter, agfReaderWriter));
batchPropertyCollection.Add(MakePoint("Point C", -87.726, 43.750, wktReaderWriter, agfReaderWriter));
batchPropertyCollection.Add(MakePoint("Point D", -87.728, 43.750, wktReaderWriter, agfReaderWriter));
// Old way commented out
/*
// Add the batch property collection to the feature source
MgInsertFeatures cmd = new MgInsertFeatures("Points", batchPropertyCollection);
MgFeatureCommandCollection featureCommandCollection = new MgFeatureCommandCollection();
featureCommandCollection.Add(cmd);
// Execute the "add" commands
featureService.UpdateFeatures(resourceIdentifier, featureCommandCollection, false);
*/
// Here's the mg-desktop way
MgPropertyCollection insertResult = featureService.InsertFeatures(resourceIdentifier, "Points", batchPropertyCollection);
for (int i = 0; i < insertResult.GetCount(); i++)
{
MgFeatureProperty fp = insertResult.GetItem(i) as MgFeatureProperty;
if (fp != null)
{
MgFeatureReader fr = fp.GetValue();
fr.Close();
}
}
// ...
//---------------------------------------------------//
// Create a new layer
LayerDefinitionFactory factory = new LayerDefinitionFactory();
// Create a mark symbol
String resourceId = "Library://Samples/Sheboygan/Symbols/BasicSymbols.SymbolLibrary";
String symbolName = "PushPin";
String width = "24"; // unit = points
String height = "24"; // unit = points
String color = "FFFF0000";
String markSymbol = factory.CreateMarkSymbol(resourceId, symbolName, width, height, color);
// Create a text symbol
String text = "ID";
String fontHeight = "12";
String foregroundColor = "FF000000";
String textSymbol = factory.CreateTextSymbol(text, fontHeight, foregroundColor);
// Create a point rule.
String ruleLegendLabel = "trees";
String filter = "";
String pointRule = factory.CreatePointRule(ruleLegendLabel, filter, textSymbol, markSymbol);
// Create a point type style.
String pointTypeStyle = factory.CreatePointTypeStyle(pointRule);
// Create a scale range.
String minScale = "0";
String maxScale = "1000000000000";
String pointScaleRange = factory.CreateScaleRange(minScale, maxScale, pointTypeStyle);
// Create the layer definiton.
String featureName = "PointSchema:Points";
String geometry = "GEOM";
String layerDefinition = factory.CreateLayerDefinition(featureSourceName, featureName, geometry, pointScaleRange);
//---------------------------------------------------//
// ...
XmlDocument domDocument = new XmlDocument();
domDocument.LoadXml(layerDefinition);
//Add the layer to the map
// TODO: Should probably validate this XML content
using (MemoryStream ms = new MemoryStream())
{
domDocument.Save(ms);
ms.Position = 0L;
//Note we do this to ensure our XML content is free of any BOM characters
byte[] ldfBytes = ms.ToArray();
Encoding utf8 = Encoding.UTF8;
String layerDefStr = new String(utf8.GetChars(ldfBytes));
ldfBytes = new byte[layerDefStr.Length - 1];
int byteCount = utf8.GetBytes(layerDefStr, 1, layerDefStr.Length - 1, ldfBytes, 0);
// Save the new layer definition to the session repository
MgByteSource byteSource = new MgByteSource(ldfBytes, ldfBytes.Length);
MgResourceIdentifier resourceID = new MgResourceIdentifier("Session:" + sessionId + "//" + layerName + ".LayerDefinition");
resourceService.SetResource(resourceID, byteSource.GetReader(), null);
//Insert this layer to our map
MgdLayer newLayer = new MgdLayer(resourceID, resourceService);
newLayer.Name = layerName;
newLayer.LegendLabel = legendLabel;
newLayer.DisplayInLegend = true;
newLayer.SetVisible(true);
layers.Insert(0, newLayer);
//Create analysis group if not already created
if (groups.IndexOf(groupName) < 0)
{
MgLayerGroup group = new MgLayerGroup(groupName);
group.LegendLabel = groupName;
group.DisplayInLegend = true;
groups.Add(group);
newLayer.Group = group;
}
MessageBox.Show("Layer (" + layerName + ") created");
_viewer.RefreshMap();
IMapLegend legend = Shell.Instance.Legend;
if (legend != null)
legend.RefreshLegend();
}
}
private void CheckRedlineLayer()
{
if (_redlineLayer == null)
{
MgdMap map = (MgdMap)_viewer.GetMap();
MgMapViewerProvider provider = _viewer.GetProvider();
MgdFeatureService featSvc = (MgdFeatureService)provider.CreateService(MgServiceType.FeatureService);
MgResourceService resSvc = (MgResourceService)provider.CreateService(MgServiceType.ResourceService);
string sessionId = Guid.NewGuid().ToString();
MgResourceIdentifier fsId = new MgResourceIdentifier("Session:" + sessionId + "//Redline.FeatureSource");
MgResourceIdentifier ldfId = new MgResourceIdentifier("Session:" + sessionId + "//Redline.LayerDefinition");
string featureClass = "Default:Redline";
string geometry = "Geometry";
string xml = string.Format(Layers.Redline, fsId.ToString(), featureClass, geometry);
//Construct our schema for the redline data store
MgFeatureSchema schema = new MgFeatureSchema("Default", "Redline schema");
MgClassDefinition cls = new MgClassDefinition();
cls.Name = "Redline";
MgDataPropertyDefinition id = new MgDataPropertyDefinition("ID");
id.DataType = MgPropertyType.Int32;
id.SetAutoGeneration(true);
MgGeometricPropertyDefinition geom = new MgGeometricPropertyDefinition(geometry);
geom.SpatialContextAssociation = "Default";
geom.GeometryTypes = MgFeatureGeometricType.Curve | MgFeatureGeometricType.Point | MgFeatureGeometricType.Solid | MgFeatureGeometricType.Surface;
MgPropertyDefinitionCollection clsProps = cls.GetProperties();
clsProps.Add(id);
clsProps.Add(geom);
MgPropertyDefinitionCollection idProps = cls.GetIdentityProperties();
idProps.Add(id);
cls.DefaultGeometryPropertyName = geometry;
MgClassDefinitionCollection classes = schema.GetClasses();
classes.Add(cls);
//Create the feature source
MgFileFeatureSourceParams create = new MgFileFeatureSourceParams("OSGeo.SDF", "Default", map.GetMapSRS(), schema);
featSvc.CreateFeatureSource(fsId, create);
//Then the layer definition
byte[] bytes = Encoding.UTF8.GetBytes(xml);
MgByteSource source = new MgByteSource(bytes, bytes.Length);
resSvc.SetResource(ldfId, source.GetReader(), null);
//Now create the runtime layer and add to map
_redlineLayer = new MgdLayer(ldfId, resSvc);
_redlineLayer.LegendLabel = "Redlining";
_redlineLayer.Name = "Redline";
_redlineLayer.Visible = true;
_redlineLayer.Selectable = true;
_redlineLayer.DisplayInLegend = true;
MgLayerCollection layers = map.GetLayers();
layers.Insert(0, _redlineLayer);
}
}
private void btnCreateHydroLine_Click(object sender, EventArgs e)
{
string layerName = "Hydro";
string legendLabel = "Hydro";
string groupName = "Analysis";
MgMapViewerProvider provider = _viewer.GetProvider();
MgResourceService resourceService = (MgResourceService)provider.CreateService(MgServiceType.ResourceService);
MgMapBase map = _viewer.GetMap();
MgLayerCollection layers = map.GetLayers();
MgLayerGroupCollection groups = map.GetLayerGroups();
//NOTE: mg-desktop has no formal concept of a session repository, but we still
//support session-based resources as a form of temporary resource (for the duration
//of the application). Session ids in mg-desktop can be any arbitrary string
string sessionId = Guid.NewGuid().ToString();
if (layers.IndexOf(layerName) >= 0)
{
MessageBox.Show("Layer (" + layerName + ") already created");
return;
}
//---------------------------------------------------//
// Create a new layer
LayerDefinitionFactory factory = new LayerDefinitionFactory();
// Create a line rule.
String ruleLegendLabel = "";
String filter = "";
String color = "FF0000FF";
String lineRule = factory.CreateLineRule(ruleLegendLabel, filter, color);
// Create a line type style.
String lineTypeStyle = factory.CreateLineTypeStyle(lineRule);
// Create a scale range.
String minScale = "0";
String maxScale = "1000000000000";
String lineScaleRange = factory.CreateScaleRange(minScale, maxScale, lineTypeStyle);
// Create the layer definiton.
String featureClass = "Library://Samples/Sheboygan/Data/HydrographicLines.FeatureSource";
String featureName = "SHP_Schema:HydrographicLines";
String geometry = "SHPGEOM";
String layerDefinition = factory.CreateLayerDefinition(featureClass, featureName, geometry, lineScaleRange);
//---------------------------------------------------//
// ...
XmlDocument domDocument = new XmlDocument();
domDocument.LoadXml(layerDefinition);
//Add the layer to the map
// TODO: Should probably validate this XML content
using (MemoryStream ms = new MemoryStream())
{
domDocument.Save(ms);
ms.Position = 0L;
//Note we do this to ensure our XML content is free of any BOM characters
byte[] ldfBytes = ms.ToArray();
Encoding utf8 = Encoding.UTF8;
String layerDefStr = new String(utf8.GetChars(ldfBytes));
ldfBytes = new byte[layerDefStr.Length - 1];
int byteCount = utf8.GetBytes(layerDefStr, 1, layerDefStr.Length - 1, ldfBytes, 0);
// Save the new layer definition to the session repository
MgByteSource byteSource = new MgByteSource(ldfBytes, ldfBytes.Length);
MgResourceIdentifier resourceID = new MgResourceIdentifier("Session:" + sessionId + "//" + layerName + ".LayerDefinition");
resourceService.SetResource(resourceID, byteSource.GetReader(), null);
//Insert this layer to our map
MgdLayer newLayer = new MgdLayer(resourceID, resourceService);
newLayer.Name = layerName;
newLayer.LegendLabel = legendLabel;
newLayer.DisplayInLegend = true;
newLayer.SetVisible(true);
layers.Insert(0, newLayer);
//Create analysis group if not already created
if (groups.IndexOf(groupName) < 0)
{
MgLayerGroup group = new MgLayerGroup(groupName);
group.LegendLabel = groupName;
group.DisplayInLegend = true;
groups.Add(group);
newLayer.Group = group;
}
MessageBox.Show("Layer (" + layerName + ") created");
_viewer.RefreshMap();
IMapLegend legend = Shell.Instance.Legend;
if (legend != null)
legend.RefreshLegend();
}
}
private void btnCreatePointsOfInterest_Click(object sender, EventArgs e)
{
string layerName = "Points";
string legendLabel = "Points of Interest";
string groupName = "Analysis";
MgMapViewerProvider provider = _viewer.GetProvider();
MgResourceService resourceService = (MgResourceService)provider.CreateService(MgServiceType.ResourceService);
//We use MgdFeatureService instead of MgFeatureService as this sample demonstrates APIs unique to mg-desktop
MgdFeatureService featureService = (MgdFeatureService)provider.CreateService(MgServiceType.FeatureService);
MgMapBase map = _viewer.GetMap();
MgLayerCollection layers = map.GetLayers();
MgLayerGroupCollection groups = map.GetLayerGroups();
//NOTE: mg-desktop has no formal concept of a session repository, but we still
//support session-based resources as a form of temporary resource (for the duration
//of the application). Session ids in mg-desktop can be any arbitrary string
string sessionId = Guid.NewGuid().ToString();
if (layers.IndexOf(layerName) >= 0)
{
MessageBox.Show("Layer (" + layerName + ") already created");
return;
}
//---------------------------------------------------//
// Create a feature source with point data.
// (The Sheboygan sample data does not contain such data,
// so we"ll create it.)
// Create a feature class definition for the new feature source
MgClassDefinition classDefinition = new MgClassDefinition();
classDefinition.SetName("Points");
classDefinition.SetDescription("Feature class with point data.");
classDefinition.SetDefaultGeometryPropertyName("GEOM");
MgPropertyDefinitionCollection idProps = classDefinition.GetIdentityProperties();
MgPropertyDefinitionCollection clsProps = classDefinition.GetProperties();
// Create an identify property
MgDataPropertyDefinition identityProperty = new MgDataPropertyDefinition("KEY");
identityProperty.SetDataType(MgPropertyType.Int32);
identityProperty.SetAutoGeneration(true);
identityProperty.SetReadOnly(true);
// Add the identity property to the class definition
clsProps.Add(identityProperty);
idProps.Add(identityProperty);
// Create a name property
MgDataPropertyDefinition nameProperty = new MgDataPropertyDefinition("NAME");
nameProperty.SetDataType(MgPropertyType.String);
// Add the name property to the class definition
clsProps.Add(nameProperty);
// Create a geometry property
MgGeometricPropertyDefinition geometryProperty = new MgGeometricPropertyDefinition("GEOM");
geometryProperty.SetGeometryTypes(MgFeatureGeometricType.Point);
// Add the geometry property to the class definition
clsProps.Add(geometryProperty);
// Create a feature schema
MgFeatureSchema featureSchema = new MgFeatureSchema("PointSchema", "Point schema");
MgClassDefinitionCollection classes = featureSchema.GetClasses();
// Add the feature schema to the class definition
classes.Add(classDefinition);
// Create the feature source
String featureSourceName = "Library://Samples/DevGuide/Data/points.FeatureSource";
MgResourceIdentifier resourceIdentifier = new MgResourceIdentifier(featureSourceName);
//wkt = "LOCALCS[\"*XY-MT*\",LOCAL_DATUM[\"*X-Y*\",10000],UNIT[\"Meter\", 1],AXIS[\"X\",EAST],AXIS[\"Y\",NORTH]]";
String wkt = "GEOGCS[\"LL84\",DATUM[\"WGS84\",SPHEROID[\"WGS84\",6378137.000,298.25722293]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.01745329251994]]";
MgFileFeatureSourceParams sdfParams = new MgFileFeatureSourceParams("OSGeo.SDF", "LatLong", wkt, featureSchema);
featureService.CreateFeatureSource(resourceIdentifier, sdfParams);
// We need to add some data to the sdf before using it. The spatial context
// reader must have an extent.
MgBatchPropertyCollection batchPropertyCollection = new MgBatchPropertyCollection();
MgWktReaderWriter wktReaderWriter = new MgWktReaderWriter();
MgAgfReaderWriter agfReaderWriter = new MgAgfReaderWriter();
MgGeometryFactory geometryFactory = new MgGeometryFactory();
// Make four points
batchPropertyCollection.Add(MakePoint("Point A", -87.727, 43.748, wktReaderWriter, agfReaderWriter));
batchPropertyCollection.Add(MakePoint("Point B", -87.728, 43.730, wktReaderWriter, agfReaderWriter));
batchPropertyCollection.Add(MakePoint("Point C", -87.726, 43.750, wktReaderWriter, agfReaderWriter));
batchPropertyCollection.Add(MakePoint("Point D", -87.728, 43.750, wktReaderWriter, agfReaderWriter));
// Old way commented out
/*
* // Add the batch property collection to the feature source
* MgInsertFeatures cmd = new MgInsertFeatures("Points", batchPropertyCollection);
* MgFeatureCommandCollection featureCommandCollection = new MgFeatureCommandCollection();
* featureCommandCollection.Add(cmd);
*
* // Execute the "add" commands
* featureService.UpdateFeatures(resourceIdentifier, featureCommandCollection, false);
*/
// Here's the mg-desktop way
MgFeatureReader insertResult = featureService.InsertFeatures(resourceIdentifier, "Points", batchPropertyCollection);
insertResult.Close();
// ...
//---------------------------------------------------//
// Create a new layer
LayerDefinitionFactory factory = new LayerDefinitionFactory();
// Create a mark symbol
String resourceId = "Library://Samples/Sheboygan/Symbols/BasicSymbols.SymbolLibrary";
String symbolName = "PushPin";
String width = "24"; // unit = points
String height = "24"; // unit = points
String color = "FFFF0000";
String markSymbol = factory.CreateMarkSymbol(resourceId, symbolName, width, height, color);
// Create a text symbol
String text = "ID";
String fontHeight = "12";
String foregroundColor = "FF000000";
String textSymbol = factory.CreateTextSymbol(text, fontHeight, foregroundColor);
// Create a point rule.
String ruleLegendLabel = "trees";
String filter = "";
String pointRule = factory.CreatePointRule(ruleLegendLabel, filter, textSymbol, markSymbol);
// Create a point type style.
String pointTypeStyle = factory.CreatePointTypeStyle(pointRule);
// Create a scale range.
String minScale = "0";
String maxScale = "1000000000000";
String pointScaleRange = factory.CreateScaleRange(minScale, maxScale, pointTypeStyle);
// Create the layer definiton.
String featureName = "PointSchema:Points";
String geometry = "GEOM";
String layerDefinition = factory.CreateLayerDefinition(featureSourceName, featureName, geometry, pointScaleRange);
//---------------------------------------------------//
// ...
XmlDocument domDocument = new XmlDocument();
domDocument.LoadXml(layerDefinition);
//Add the layer to the map
// TODO: Should probably validate this XML content
using (MemoryStream ms = new MemoryStream())
{
domDocument.Save(ms);
ms.Position = 0L;
//Note we do this to ensure our XML content is free of any BOM characters
byte[] ldfBytes = ms.ToArray();
Encoding utf8 = Encoding.UTF8;
String layerDefStr = new String(utf8.GetChars(ldfBytes));
ldfBytes = new byte[layerDefStr.Length - 1];
int byteCount = utf8.GetBytes(layerDefStr, 1, layerDefStr.Length - 1, ldfBytes, 0);
// Save the new layer definition to the session repository
MgByteSource byteSource = new MgByteSource(ldfBytes, ldfBytes.Length);
MgResourceIdentifier resourceID = new MgResourceIdentifier("Session:" + sessionId + "//" + layerName + ".LayerDefinition");
resourceService.SetResource(resourceID, byteSource.GetReader(), null);
//Insert this layer to our map
MgdLayer newLayer = new MgdLayer(resourceID, resourceService);
newLayer.Name = layerName;
newLayer.LegendLabel = legendLabel;
newLayer.DisplayInLegend = true;
newLayer.SetVisible(true);
layers.Insert(0, newLayer);
//Create analysis group if not already created
if (groups.IndexOf(groupName) < 0)
{
MgLayerGroup group = new MgLayerGroup(groupName);
group.LegendLabel = groupName;
group.DisplayInLegend = true;
groups.Add(group);
newLayer.Group = group;
}
MessageBox.Show("Layer (" + layerName + ") created");
_viewer.RefreshMap();
IMapLegend legend = Shell.Instance.Legend;
if (legend != null)
{
legend.RefreshLegend();
}
}
}
private void btnShowBuildings_Click(object sender, EventArgs e)
{
MgMapViewerProvider provider = _viewer.GetProvider();
MgResourceService resourceService = (MgResourceService)provider.CreateService(MgServiceType.ResourceService);
string layerName = "RecentlyBuilt";
string legendLabel = "Built after 1980";
string groupName = "Analysis";
MgMapBase map = _viewer.GetMap();
MgLayerCollection layers = map.GetLayers();
MgLayerGroupCollection groups = map.GetLayerGroups();
if (layers.IndexOf(layerName) >= 0)
{
MessageBox.Show("Layer (" + layerName + ") already created");
return;
}
//NOTE: mg-desktop has no formal concept of a session repository, but we still
//support session-based resources as a form of temporary resource (for the duration
//of the application). Session ids in mg-desktop can be any arbitrary string
string sessionId = Guid.NewGuid().ToString();
XmlDocument domDocument = new XmlDocument();
domDocument.LoadXml(Layers.RecentlyBuilt);
// Get a list of all the <AreaRule><Filter> elements in
// the XML.
XmlNodeList nodes = domDocument.SelectNodes("//AreaRule/Filter");
// Find the correct node and change it
foreach (XmlNode node in nodes)
{
if (node.InnerText == "YRBUILT > 1950")
{
node.InnerText = "YRBUILT > 1980";
}
}
// Get a list of all the <LegendLabel> elements in the
// XML.
nodes = domDocument.SelectNodes("//LegendLabel");
// Find the correct node and change it
foreach (XmlNode node in nodes)
{
if (node.InnerText == "Built after 1950")
{
node.InnerText = "Built after 1980";
}
}
//Add the layer to the map
// TODO: Should probably validate this XML content
using (MemoryStream ms = new MemoryStream())
{
domDocument.Save(ms);
ms.Position = 0L;
//Note we do this to ensure our XML content is free of any BOM characters
byte[] layerDefinition = ms.ToArray();
Encoding utf8 = Encoding.UTF8;
String layerDefStr = new String(utf8.GetChars(layerDefinition));
layerDefinition = new byte[layerDefStr.Length - 1];
int byteCount = utf8.GetBytes(layerDefStr, 1, layerDefStr.Length - 1, layerDefinition, 0);
// Save the new layer definition to the session repository
MgByteSource byteSource = new MgByteSource(layerDefinition, layerDefinition.Length);
MgResourceIdentifier resourceID = new MgResourceIdentifier("Session:" + sessionId + "//" + layerName + ".LayerDefinition");
resourceService.SetResource(resourceID, byteSource.GetReader(), null);
//Insert this layer to our map
MgdLayer newLayer = new MgdLayer(resourceID, resourceService);
newLayer.Name = layerName;
newLayer.LegendLabel = legendLabel;
newLayer.DisplayInLegend = true;
newLayer.SetVisible(true);
layers.Insert(0, newLayer);
//Create analysis group if not already created
if (groups.IndexOf(groupName) < 0)
{
MgLayerGroup group = new MgLayerGroup(groupName);
group.LegendLabel = groupName;
group.DisplayInLegend = true;
groups.Add(group);
newLayer.Group = group;
}
//Turn off square footage if it exists
if (layers.IndexOf("SquareFootage") >= 0)
{
MgLayerBase layer = layers.GetItem("SquareFootage");
layer.SetVisible(false);
}
MessageBox.Show("Layer (" + layerName + ") created");
_viewer.RefreshMap();
IMapLegend legend = Shell.Instance.Legend;
if (legend != null)
{
legend.RefreshLegend();
}
}
}
private void btnCreateHydroLine_Click(object sender, EventArgs e)
{
string layerName = "Hydro";
string legendLabel = "Hydro";
string groupName = "Analysis";
MgMapViewerProvider provider = _viewer.GetProvider();
MgResourceService resourceService = (MgResourceService)provider.CreateService(MgServiceType.ResourceService);
MgMapBase map = _viewer.GetMap();
MgLayerCollection layers = map.GetLayers();
MgLayerGroupCollection groups = map.GetLayerGroups();
//NOTE: mg-desktop has no formal concept of a session repository, but we still
//support session-based resources as a form of temporary resource (for the duration
//of the application). Session ids in mg-desktop can be any arbitrary string
string sessionId = Guid.NewGuid().ToString();
if (layers.IndexOf(layerName) >= 0)
{
MessageBox.Show("Layer (" + layerName + ") already created");
return;
}
//---------------------------------------------------//
// Create a new layer
LayerDefinitionFactory factory = new LayerDefinitionFactory();
// Create a line rule.
String ruleLegendLabel = "";
String filter = "";
String color = "FF0000FF";
String lineRule = factory.CreateLineRule(ruleLegendLabel, filter, color);
// Create a line type style.
String lineTypeStyle = factory.CreateLineTypeStyle(lineRule);
// Create a scale range.
String minScale = "0";
String maxScale = "1000000000000";
String lineScaleRange = factory.CreateScaleRange(minScale, maxScale, lineTypeStyle);
// Create the layer definiton.
String featureClass = "Library://Samples/Sheboygan/Data/HydrographicLines.FeatureSource";
String featureName = "SHP_Schema:HydrographicLines";
String geometry = "SHPGEOM";
String layerDefinition = factory.CreateLayerDefinition(featureClass, featureName, geometry, lineScaleRange);
//---------------------------------------------------//
// ...
XmlDocument domDocument = new XmlDocument();
domDocument.LoadXml(layerDefinition);
//Add the layer to the map
// TODO: Should probably validate this XML content
using (MemoryStream ms = new MemoryStream())
{
domDocument.Save(ms);
ms.Position = 0L;
//Note we do this to ensure our XML content is free of any BOM characters
byte[] ldfBytes = ms.ToArray();
Encoding utf8 = Encoding.UTF8;
String layerDefStr = new String(utf8.GetChars(ldfBytes));
ldfBytes = new byte[layerDefStr.Length - 1];
int byteCount = utf8.GetBytes(layerDefStr, 1, layerDefStr.Length - 1, ldfBytes, 0);
// Save the new layer definition to the session repository
MgByteSource byteSource = new MgByteSource(ldfBytes, ldfBytes.Length);
MgResourceIdentifier resourceID = new MgResourceIdentifier("Session:" + sessionId + "//" + layerName + ".LayerDefinition");
resourceService.SetResource(resourceID, byteSource.GetReader(), null);
//Insert this layer to our map
MgdLayer newLayer = new MgdLayer(resourceID, resourceService);
newLayer.Name = layerName;
newLayer.LegendLabel = legendLabel;
newLayer.DisplayInLegend = true;
newLayer.SetVisible(true);
layers.Insert(0, newLayer);
//Create analysis group if not already created
if (groups.IndexOf(groupName) < 0)
{
MgLayerGroup group = new MgLayerGroup(groupName);
group.LegendLabel = groupName;
group.DisplayInLegend = true;
groups.Add(group);
newLayer.Group = group;
}
MessageBox.Show("Layer (" + layerName + ") created");
_viewer.RefreshMap();
IMapLegend legend = Shell.Instance.Legend;
if (legend != null)
{
legend.RefreshLegend();
}
}
}
private void CheckRedlineLayer()
{
if (_redlineLayer == null)
{
MgdMap map = (MgdMap)_viewer.GetMap();
MgMapViewerProvider provider = _viewer.GetProvider();
MgdFeatureService featSvc = (MgdFeatureService)provider.CreateService(MgServiceType.FeatureService);
MgResourceService resSvc = (MgResourceService)provider.CreateService(MgServiceType.ResourceService);
string sessionId = Guid.NewGuid().ToString();
MgResourceIdentifier fsId = new MgResourceIdentifier("Session:" + sessionId + "//Redline.FeatureSource");
MgResourceIdentifier ldfId = new MgResourceIdentifier("Session:" + sessionId + "//Redline.LayerDefinition");
string featureClass = "Default:Redline";
string geometry = "Geometry";
string xml = string.Format(Layers.Redline, fsId.ToString(), featureClass, geometry);
//Construct our schema for the redline data store
MgFeatureSchema schema = new MgFeatureSchema("Default", "Redline schema");
MgClassDefinition cls = new MgClassDefinition();
cls.Name = "Redline";
MgDataPropertyDefinition id = new MgDataPropertyDefinition("ID");
id.DataType = MgPropertyType.Int32;
id.SetAutoGeneration(true);
MgGeometricPropertyDefinition geom = new MgGeometricPropertyDefinition(geometry);
geom.SpatialContextAssociation = "Default";
geom.GeometryTypes = MgFeatureGeometricType.Curve | MgFeatureGeometricType.Point | MgFeatureGeometricType.Solid | MgFeatureGeometricType.Surface;
MgPropertyDefinitionCollection clsProps = cls.GetProperties();
clsProps.Add(id);
clsProps.Add(geom);
MgPropertyDefinitionCollection idProps = cls.GetIdentityProperties();
idProps.Add(id);
cls.DefaultGeometryPropertyName = geometry;
MgClassDefinitionCollection classes = schema.GetClasses();
classes.Add(cls);
//Create the feature source
MgCreateSdfParams create = new MgCreateSdfParams("Default", map.GetMapSRS(), schema);
featSvc.CreateFeatureSource(fsId, create);
//Then the layer definition
byte[] bytes = Encoding.UTF8.GetBytes(xml);
MgByteSource source = new MgByteSource(bytes, bytes.Length);
resSvc.SetResource(ldfId, source.GetReader(), null);
//Now create the runtime layer and add to map
_redlineLayer = new MgdLayer(ldfId, resSvc);
_redlineLayer.LegendLabel = "Redlining";
_redlineLayer.Name = "Redline";
_redlineLayer.Visible = true;
_redlineLayer.Selectable = true;
_redlineLayer.DisplayInLegend = true;
MgLayerCollection layers = map.GetLayers();
layers.Insert(0, _redlineLayer);
}
}
private void CreateRedlineLayer()
{
MgMapBase map = mgMapViewer1.GetMap();
MgdServiceFactory fact = new MgdServiceFactory();
MgdFeatureService featSvc = (MgdFeatureService)fact.CreateService(MgServiceType.FeatureService);
MgResourceService resSvc = (MgResourceService)fact.CreateService(MgServiceType.ResourceService);
//Note that mg-desktop does not have a concept of sessions like the
//official MapGuide API, but it *does* allow session-based resources
//as a way of having temporary resources. Such resources will reside
//in a special directory for session resources (specified in Platform.ini)
//
//You can plug whatever string as the session id, but the resource identifier
//must satisfy the session id pattern:
//
// Session:<session id string>//Path/To/Your.ResourceType
//
//These files are removed with MgPlatform.Terminate(), which is called in this
//application as part of the exiting process.
string sessionId = Guid.NewGuid().ToString();
MgResourceIdentifier fsId = new MgResourceIdentifier("Session:" + sessionId + "//Redline.FeatureSource");
MgResourceIdentifier ldfId = new MgResourceIdentifier("Session:" + sessionId + "//Redline.LayerDefinition");
//Create our point redline schema. It looks like this:
//
// Default
// Redline
// ID (int32, autogenerated)
// Geometry (coordinate system same as map
string featureClass = "Default:Redline";
string geometry = "Geometry";
MgFeatureSchema schema = new MgFeatureSchema("Default", "Redline schema");
MgClassDefinition cls = new MgClassDefinition();
cls.Name = "Redline";
MgDataPropertyDefinition id = new MgDataPropertyDefinition("ID");
id.DataType = MgPropertyType.Int32;
id.SetAutoGeneration(true);
MgGeometricPropertyDefinition geom = new MgGeometricPropertyDefinition(geometry);
geom.SpatialContextAssociation = "Default";
geom.GeometryTypes = MgFeatureGeometricType.Curve | MgFeatureGeometricType.Point | MgFeatureGeometricType.Solid | MgFeatureGeometricType.Surface;
MgPropertyDefinitionCollection clsProps = cls.GetProperties();
clsProps.Add(id);
clsProps.Add(geom);
MgPropertyDefinitionCollection idProps = cls.GetIdentityProperties();
idProps.Add(id);
cls.DefaultGeometryPropertyName = geometry;
MgClassDefinitionCollection classes = schema.GetClasses();
classes.Add(cls);
//Create the feature source with this schema. We use the map's
//coordinate system for the feature source to ensure features
//that we create, will line up with the map
MgCreateSdfParams create = new MgCreateSdfParams("Default", map.GetMapSRS(), schema);
featSvc.CreateFeatureSource(fsId, create);
//Then create the layer definition. RedlineLayer.xml contains the template
string xml = string.Format(File.ReadAllText("RedlineLayer.xml"), fsId.ToString(), featureClass, geometry);
var bytes = Encoding.UTF8.GetBytes(xml);
MgByteSource source = new MgByteSource(bytes, bytes.Length);
resSvc.SetResource(ldfId, source.GetReader(), null);
//Now create the runtime layer and add to map
_pointLayer = new MgdLayer(ldfId, resSvc);
_pointLayer.LegendLabel = "Redlining";
_pointLayer.Name = "Redline";
_pointLayer.Visible = true;
_pointLayer.Selectable = true;
_pointLayer.DisplayInLegend = true;
var layers = map.GetLayers();
layers.Insert(0, _pointLayer);
}