/// <summary>
/// Get Envelope in external coordinates.
/// </summary>
/// <param name="precisionModel"></param>
/// <param name="envelope"></param>
/// <returns></returns>
public static IEnvelope GetEnvelopeExternal(PrecisionModel precisionModel, IEnvelope envelope)
{
// get envelose in external coordinates
Coordinate min = new Coordinate(envelope.Minimum.X, envelope.Minimum.Y);
Coordinate max = new Coordinate(envelope.Maximum.X, envelope.Maximum.Y);
// min = precisionModel.ToExternal(min);
// max = precisionModel.ToExternal(max);
Envelope bounds = new Envelope(min.X, max.X, min.Y, max.Y);
return bounds;
}
/// <summary>
///
/// </summary>
/// <param name="querySeg"></param>
/// <returns></returns>
public virtual IList Query(LineSegment querySeg)
{
Envelope env = new Envelope(querySeg.P0, querySeg.P1);
LineSegmentVisitor visitor = new LineSegmentVisitor(querySeg);
index.Query(env, visitor);
IList itemsFound = visitor.Items;
return itemsFound;
}
/// <summary>
///
/// </summary>
/// <param name="node"></param>
/// <param name="addEnv"></param>
/// <returns></returns>
public static Node CreateExpanded(Node node, IEnvelope addEnv)
{
Envelope expandEnv = new Envelope(addEnv);
if (node != null)
expandEnv.ExpandToInclude(node.env);
Node largerNode = CreateNode(expandEnv);
if (node != null)
largerNode.InsertNode(node);
return largerNode;
}
/// <summary>
/// Overrides the OnMouseUp event to handle the situation where we are tyring to
/// identify the vector features in the specified area.
/// </summary>
/// <param name="e"></param>
protected override void OnMouseUp(GeoMouseArgs e)
{
Coordinate c1 = e.Map.PixelToProj(new System.Drawing.Point(e.X - 8, e.Y - 8));
Coordinate c2 = e.Map.PixelToProj(new System.Drawing.Point(e.X + 8, e.Y + 8));
Coordinate s1 = e.Map.PixelToProj(new System.Drawing.Point(e.X - 1, e.Y - 1));
Coordinate s2 = e.Map.PixelToProj(new System.Drawing.Point(e.X + 1, e.Y + 1));
Coordinate center = e.Map.PixelToProj(new System.Drawing.Point(e.X, e.Y));
IEnvelope tolerant = new Envelope(c1, c2);
IEnvelope strict = new Envelope(s1, s2);
if (frmFeatureIdentifier == null)
{
frmFeatureIdentifier = new FeatureIdentifier();
}
frmFeatureIdentifier.SuspendLayout();
frmFeatureIdentifier.Clear();
Identify(e.Map.MapFrame.GetLayers(), strict, tolerant);
frmFeatureIdentifier.ReSelect();
frmFeatureIdentifier.ResumeLayout();
frmFeatureIdentifier.Show();
base.OnMouseUp(e);
}
/// <summary>
/// returns only the features that have envelopes that
/// intersect with the specified envelope. If in indexMode, this uses the ShapeIndices to create
/// features on demand, rather than loading all the features. It is much faster to use selectIndices
/// when in index mode.
/// </summary>
/// <param name="region">The specified region to test for intersect with</param>
/// <param name="affectedRegion">This returns the geographic extents that contains the modified contents.</param>
/// <returns>A List of the IFeature elements that are contained in this region</returns>
public virtual List<IFeature> Select(IEnvelope region, out IEnvelope affectedRegion)
{
List<IFeature> result = new List<IFeature>();
if(IndexMode)
{
ShapeRange aoi = new ShapeRange(new Extent(region));
IEnvelope env = region.Copy();
Extent affected = new Extent();
List<ShapeRange> shapes = ShapeIndices;
if(shapes != null)
{
for(int shp = 0; shp < shapes.Count; shp++)
{
if (!shapes[shp].Intersects(aoi)) continue;
IFeature f = GetFeature(shp);
affected.ExpandToInclude(shapes[shp].Extent);
result.Add(f);
}
}
affectedRegion = affected.ToEnvelope();
return result;
}
affectedRegion = new Envelope();
foreach (IFeature feature in Features)
{
if (!feature.Envelope.Intersects(region)) continue;
result.Add(feature);
affectedRegion.ExpandToInclude(feature.Envelope);
}
return result;
}
/// <summary>
/// Handles the Mouse Up situation
/// </summary>
/// <param name="e"></param>
protected override void OnMouseUp(GeoMouseArgs e)
{
Stopwatch sw = new Stopwatch();
sw.Start();
if (_isDragging == false) return;
_currentPoint = e.Location;
_isDragging = false;
//Map.Invalidate(); // Get rid of the selection box
//Application.DoEvents();
IEnvelope env = new Envelope(_geoStartPoint.X, e.GeographicLocation.X, _geoStartPoint.Y, e.GeographicLocation.Y);
IEnvelope tolerant = env;
if(_startPoint.X == e.X && _startPoint.Y == e.Y)
{
// click selection doesn't work quite right without some tiny tolerance.
double tol = Map.MapFrame.Extents.Width/10000;
env.ExpandBy(tol);
}
if (Math.Abs(_startPoint.X - e.X) < 8 && Math.Abs(_startPoint.Y - e.Y) < 8)
{
Coordinate c1 = e.Map.PixelToProj(new System.Drawing.Point(e.X - 4, e.Y - 4));
Coordinate c2 = e.Map.PixelToProj(new System.Drawing.Point(e.X + 4, e.Y + 4));
tolerant = new Envelope(c1, c2);
}
Map.MapFrame.SuspendEvents();
HandleSelection(tolerant, env);
Map.MapFrame.ResumeEvents();
// Force an invalidate to clear the dotted lines, even if we haven't changed anything.
e.Map.Invalidate();
//e.Map.MapFrame.Initialize();
sw.Stop();
Debug.WriteLine("Initialize: " + sw.ElapsedMilliseconds);
base.OnMouseUp(e);
}
/// <summary>
/// Test whether a point lies in the envelopes of both input segments.
/// A correctly computed intersection point should return <c>true</c>
/// for this test.
/// Since this test is for debugging purposes only, no attempt is
/// made to optimize the envelope test.
/// </summary>
/// <param name="intPt"></param>
/// <returns><c>true</c> if the input point lies within both input segment envelopes.</returns>
private bool IsInSegmentEnvelopes(Coordinate intPt)
{
Envelope env0 = new Envelope(InputLines[0, 0], InputLines[0, 1]);
Envelope env1 = new Envelope(InputLines[1, 0], InputLines[1, 1]);
return env0.Contains(intPt) && env1.Contains(intPt);
}
/// <summary>
/// This uses extent checking (rather than full polygon intersection checking). It will add
/// any members that are either contained by or intersect with the specified region
/// depending on the SelectionMode property. The order of operation is the region
/// acting on the feature, so Contains, for instance, would work with points.
/// </summary>
/// <param name="region"></param>
/// <param name="affectedArea">The affected area of this addition</param>
/// <returns>True if any item was actually added to the collection</returns>
public bool AddRegion(IEnvelope region, out IEnvelope affectedArea)
{
bool added = false;
SuspendChanges();
affectedArea = new Envelope();
Stopwatch sw = new Stopwatch();
Stopwatch total = new Stopwatch();
total.Start();
foreach (IFeature f in FeatureList)
{
bool doAdd = false;
if (_selectionMode == SelectionModes.IntersectsExtent)
{
if (region.Intersects(f.Envelope))
{
Add(f);
affectedArea.ExpandToInclude(f.Envelope);
added = true;
}
}
else if (_selectionMode == SelectionModes.ContainsExtent)
{
if (region.Contains(f.Envelope))
{
Add(f);
affectedArea.ExpandToInclude(f.Envelope);
added = true;
}
}
IGeometry reg;
if(region.Width == 0 && region.Height == 0)
{
reg = new Point(region.X, region.Y);
}
else if (region.Height == 0 || region.Width == 0)
{
Coordinate[] coords = new Coordinate[2];
coords[0] = new Coordinate(region.X, region.Y);
coords[1] = new Coordinate(region.Bottom(), region.Right());
reg = new LineString(coords);
}
else
{
reg = region.ToPolygon();
}
IGeometry geom = Geometry.FromBasicGeometry(f.BasicGeometry);
switch (_selectionMode)
{
case SelectionModes.Contains:
if(region.Contains(f.Envelope))
{
doAdd = true;
}
else if (region.Intersects(f.Envelope))
{
if (reg.Contains(geom)) doAdd = true;
}
break;
case SelectionModes.CoveredBy:
if (reg.CoveredBy(geom)) doAdd = true;
break;
case SelectionModes.Covers:
if (reg.Covers(geom)) doAdd = true;
break;
case SelectionModes.Disjoint:
if (reg.Disjoint(geom)) doAdd = true;
break;
case SelectionModes.Intersects:
if (region.Contains(f.Envelope))
{
doAdd = true;
}
else if (region.Intersects(f.Envelope))
{
if (reg.Intersects(geom)) doAdd = true;
}
break;
case SelectionModes.Overlaps:
if (reg.Overlaps(geom)) doAdd = true;
break;
case SelectionModes.Touches:
if (reg.Touches(geom)) doAdd = true;
break;
case SelectionModes.Within:
if (reg.Within(geom)) doAdd = true;
break;
}
if (doAdd)
{
Add(f);
affectedArea.ExpandToInclude(f.Envelope);
added = true;
}
}
sw.Start();
ResumeChanges();
sw.Stop();
total.Stop();
Debug.WriteLine("Geometry Intersection Time: " + sw.ElapsedMilliseconds);
Debug.WriteLine("Total Intersection Time: " + total.ElapsedMilliseconds);
return added;
}
private IEnvelope GetEnvelope()
{
IEnvelope env = new Envelope();
foreach (IFeature f in this)
{
env.ExpandToInclude(f.Envelope);
}
return env;
}
/// <summary>
/// Un-highlights or returns the features from the specified region. The specified selectionMode
/// will be used to determine how to choose features.
/// </summary>
/// <param name="tolerant">The geographic envelope in cases like cliking near points where tolerance is allowed</param>
/// <param name="strict">The geographic region when working with absolutes, without a tolerance</param>
/// <param name="affectedArea">The geographic envelope that will be visibly impacted by the change</param>
/// <param name="selectionMode">The selection mode that controls how to choose members relative to the region </param>
/// <returns>Boolean, true if members were removed from the selection.</returns>
public override bool UnSelect(IEnvelope tolerant, IEnvelope strict, SelectionModes selectionMode, out IEnvelope affectedArea)
{
if (!_drawnStatesNeeded && !_editMode) AssignFastDrawnStates();
IEnvelope region = tolerant;
if (DataSet.FeatureType == FeatureTypes.Polygon) region = strict;
affectedArea = new Envelope();
bool changed = false;
if (IsWithinLegendSelection() || _scheme.IsWithinLegendSelection())
{
if (_editMode)
{
_selection.SelectionMode = selectionMode;
changed = _selection.RemoveRegion(region, out affectedArea);
}
else
{
_selection.SelectionMode = selectionMode;
changed = _selection.RemoveRegion(region, out affectedArea);
}
}
else
{
SuspendChangeEvent();
_selection.SuspendChanges();
List<IFeatureCategory> categories = _scheme.GetCategories().ToList();
foreach (IFeatureCategory category in categories)
{
if (!category.IsSelected) continue;
_selection.RegionCategory = category;
_selection.RemoveRegion(region, out affectedArea);
_selection.RegionCategory = null;
}
_selection.ResumeChanges();
ResumeChangeEvent();
}
return changed;
}
/// <summary>
/// Performs an intersection of this line segment with the specified envelope
/// </summary>
/// <param name="inEnvelope">The envelope to compare against</param>
/// <returns>An ILineSegment, or null if there is no intersection.</returns>
public ILineSegment Intersection(Envelope inEnvelope)
{
return inEnvelope.Intersection(this);
}
/// <summary>
/// Executes the Erase Opaeration tool programaticaly
/// </summary>
/// <param name="input1">The input raster</param>
/// <param name="input2">The input raster</param>
/// <param name="output">The output raster</param>
/// <param name="cancelProgressHandler">The progress handler</param>
/// <returns></returns>
public bool Execute(IRaster input1, IRaster input2, IRaster output, MapWindow.Tools.ICancelProgressHandler cancelProgressHandler)
{
//Validates the input and output data
if (input1 == null || input2 == null || output == null)
{
return false;
}
IEnvelope envelope = new Envelope() as IEnvelope;
envelope = UnionEnvelope(input1, input2);
int noOfCol;
int noOfRow;
//Figures out which raster has smaller cells
IRaster smallestCellRaster;
if (input1.CellWidth < input2.CellWidth) smallestCellRaster = input1;
else smallestCellRaster = input2;
//Given the envelope of the two rasters we calculate the number of columns / rows
noOfCol = Convert.ToInt32(Math.Abs(envelope.Width / smallestCellRaster.CellWidth));
noOfRow = Convert.ToInt32(Math.Abs(envelope.Height / smallestCellRaster.CellHeight));
//Create the new raster with the appropriate dimensions
Raster Temp = new Raster();
//Temp.CreateNew(output.Filename, noOfRow, noOfCol, input1.DataType);
Temp.CreateNew(output.Filename, "", noOfCol, noOfRow, 1, input1.DataType, new string[] { "" });
Temp.CellWidth = smallestCellRaster.CellWidth;
Temp.CellHeight = smallestCellRaster.CellHeight;
Temp.Xllcenter = envelope.Minimum.X + (Temp.CellWidth / 2);
Temp.Yllcenter = envelope.Minimum.Y + (Temp.CellHeight / 2);
MapWindow.Geometries.ICoordinate I1 = new MapWindow.Geometries.Coordinate() as MapWindow.Geometries.ICoordinate;
RcIndex v1 = new RcIndex();
RcIndex v2 = new RcIndex();
double val1;
double val2;
int previous=0;
int current=0;
int max = (Temp.Bounds.NumRows + 1);
for (int i = 0; i < Temp.Bounds.NumRows; i++)
{
for (int j = 0; j < Temp.Bounds.NumColumns; j++)
{
I1 = Temp.CellToProj(i, j);
v1 = input1.ProjToCell(I1);
if (v1.Row <= input1.EndRow && v1.Column <= input1.EndColumn && v1.Row > -1 && v1.Column > -1)
val1 = input1.Value[v1.Row, v1.Column];
else
val1 = input1.NoDataValue;
v2 = input2.ProjToCell(I1);
if (v2.Row <= input2.EndRow && v2.Column <= input2.EndColumn && v2.Row > -1 && v2.Column > -1)
val2 = input2.Value[v2.Row, v2.Column];
else
val2 = input2.NoDataValue;
if (val1 == input1.NoDataValue && val2 == input2.NoDataValue)
{
Temp.Value[i, j] = Temp.NoDataValue;
}
else if (val1 != input1.NoDataValue && val2 == input2.NoDataValue)
{
Temp.Value[i, j] = val1;
}
else if (val1 == input1.NoDataValue && val2 != input2.NoDataValue)
{
Temp.Value[i, j] = val2;
}
else
{
Temp.Value[i, j] = val1;
}
if (cancelProgressHandler.Cancel == true)
return false;
}
current = Convert.ToInt32(Math.Round(i * 100D / max));
//only update when increment in persentage
if(current>previous)
cancelProgressHandler.Progress("", current, current.ToString() + "% progress completed");
previous = current;
}
output = Temp;
output.Save();
return true;
}
/// <summary>
/// This method inverts the selection for the specified region. Members already a part of the selection
/// will be removed from the selection, while members that are not a part of the selection will be added
/// to the selection.
/// </summary>
/// <param name="tolerant">The region specifying where featuers should be added or removed from the selection</param>
/// <param name="strict">With polygon selection it is better not to allow any tolerance since the polygons already contain it</param>
/// <param name="affectedArea">The geographic region that will be impacted by the changes</param>
/// <param name="selectionMode">The SelectionModes enumeration that clarifies how the features should interact with the region</param>
public override bool InvertSelection(IEnvelope tolerant, IEnvelope strict, SelectionModes selectionMode, out IEnvelope affectedArea)
{
if (!_drawnStatesNeeded && !_editMode) AssignFastDrawnStates();
IEnvelope region = tolerant;
bool changed = false;
affectedArea = new Envelope();
if (DataSet.FeatureType == FeatureTypes.Polygon)
{
region = strict;
}
_selection.SelectionMode = selectionMode;
if (IsWithinLegendSelection() || _scheme.IsWithinLegendSelection())
{
changed = _selection.InvertSelection(region, out affectedArea);
}
else
{
List<IFeatureCategory> categories = _scheme.GetCategories().ToList();
foreach (IFeatureCategory category in categories)
{
if (!category.IsWithinLegendSelection()) continue;
_selection.RegionCategory = category;
if (_selection.AddRegion(region, out affectedArea)) changed = true;
_selection.RegionCategory = null;
}
}
return changed;
}
/// <summary>
/// Execute the union region for output envelope
/// </summary>
/// <param name="input1">input raster</param>
/// <param name="input2">input raster</param>
/// <returns>Envelope</returns>
private IEnvelope UnionEnvelope(IRaster input1, IRaster input2)
{
IEnvelope e1 = new Envelope() as IEnvelope;
IEnvelope e2 = new Envelope() as IEnvelope;
e1 = input1.Bounds.Envelope;
e2 = input2.Bounds.Envelope;
e1.ExpandToInclude(e2);
return (e1);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
protected override IEnvelope ComputeEnvelopeInternal()
{
Envelope envelope = new Envelope();
for (int i = 0; i < _geometries.Length; i++)
envelope.ExpandToInclude(_geometries[i].EnvelopeInternal);
return envelope;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
protected override object ComputeBounds()
{
Envelope bounds = null;
for (IEnumerator i = ChildBoundables.GetEnumerator(); i.MoveNext(); )
{
IBoundable childBoundable = (IBoundable) i.Current;
if (bounds == null)
bounds = new Envelope((Envelope)childBoundable.Bounds);
else bounds.ExpandToInclude((Envelope)childBoundable.Bounds);
}
return bounds;
}
/// <summary>
/// Executes the Erase Opaeration tool programaticaly.
/// </summary>
/// <param name="input1">The input raster.</param>
/// <param name="input2">The input raster.</param>
/// <param name="output">The output raster.</param>
/// <param name="cancelProgressHandler">The progress handler.</param>
/// <returns></returns>
public bool Execute(IRaster input1, IFeatureSet input2, IRaster output, MapWindow.Tools.ICancelProgressHandler cancelProgressHandler)
{
//Validates the input and output data
if (input1 == null || input2 == null || output == null)
{
return false;
}
int noOfCol = input1.NumColumns;
int noOfRow = input1.NumRows;
//Calculate the Intersect Envelope
IEnvelope envelope1 = new Envelope() as IEnvelope;
IEnvelope envelope2 = new Envelope() as IEnvelope;
envelope1 = input1.Bounds.Envelope;
envelope2 = input2.Envelope;
envelope1 = envelope1.Intersection(envelope2);
//Create the new raster with the appropriate dimensions
IRaster Temp = Raster.Create(output.Filename, "", noOfCol, noOfRow, 1, input1.DataType, new string[] { });
//Temp.CreateNew(output.Filename, noOfRow, noOfCol, input1.DataType);
Temp.CellWidth = input1.CellWidth;
Temp.CellHeight = input1.CellHeight;
Temp.Xllcenter = envelope1.Minimum.X + (Temp.CellWidth / 2);
Temp.Yllcenter = envelope1.Minimum.Y + (Temp.CellHeight / 2);
MapWindow.Geometries.ICoordinate I1 = new MapWindow.Geometries.Coordinate() as MapWindow.Geometries.ICoordinate;
RcIndex v1 = new RcIndex();
// MapWindow.Analysis.Topology.Algorithm.PointLocator pointLocator1 = new MapWindow.Analysis.Topology.Algorithm.PointLocator();
double val1;
int previous = 0;
int current = 0;
int max = (Temp.Bounds.NumRows + 1);
for (int i = 0; i < Temp.Bounds.NumRows; i++)
{
for (int j = 0; j < Temp.Bounds.NumColumns; j++)
{
I1 = Temp.CellToProj(i, j);
v1 = input1.ProjToCell(I1);
if (v1.Row <= input1.EndRow && v1.Column <= input1.EndColumn && v1.Row > -1 && v1.Column > -1)
val1 = input1.Value[v1.Row, v1.Column];
else
val1 = Temp.NoDataValue;
//test if the coordinate is inside of the polygon
bool isInside = false;
IFeature pointFeat = new Feature(new Point(I1)) as IFeature;
foreach (IFeature f in input2.Features)
{
if (f.Contains(pointFeat))
{
Temp.Value[i, j] = val1;
isInside = true;
break;
}
}
if (isInside == false)
{
Temp.Value[i, j] = Temp.NoDataValue;
}
if (cancelProgressHandler.Cancel == true)
return false;
}
current = Convert.ToInt32(Math.Round(i * 100D / max));
//only update when increment in percentage
if (current > previous)
cancelProgressHandler.Progress("", current, current.ToString() + "% progress completed");
previous = current;
}
output = Temp;
output.Save();
return true;
}
/// <summary>
/// Determines if any portion of this segment intersects the specified extent.
/// </summary>
/// <param name="inEnvelope">The</param>
/// <returns>Boolean, true if this line segment intersects the specified envelope</returns>
public bool Intersects(Envelope inEnvelope)
{
return inEnvelope.Intersects(this);
}
/// <summary>
///
/// </summary>
/// <param name="env"></param>
/// <param name="action"></param>
public QueryVisitor(Envelope env, HotPixelSnapAction action)
{
this.env = env;
this.action = action;
}
/// <summary>
/// Removes any members from existing in the selected state
/// </summary>
/// <param name="affectedAreas">The region of the selection that was cleared</param>
/// <returns>Boolean, true if any sub-members of the group were changed by the clear method</returns>
public override bool ClearSelection(out IEnvelope affectedAreas)
{
affectedAreas = new Envelope();
bool changed = false;
if (!_selectionEnabled) return false;
MapFrame.SuspendEvents();
foreach (ILayer layer in GetLayers())
{
IEnvelope layerArea;
if(layer.ClearSelection(out layerArea)) changed = true;
affectedAreas.ExpandToInclude(layerArea);
}
MapFrame.ResumeEvents();
OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
return changed;
}
/// <summary>
/// Tests each member currently in the selected features based on
/// the SelectionMode. If it passes, it will remove the feature from
/// the selection.
/// </summary>
/// <param name="region">The geographic region to remove</param>
/// <param name="affectedArea">A geographic area that was affected by this change.</param>
/// <returns>Boolean, true if the collection was changed</returns>
public bool RemoveRegion(IEnvelope region, out IEnvelope affectedArea)
{
SuspendChanges();
bool removed = false;
affectedArea = new Envelope();
var query = from pair in _filter.DrawnStates
where pair.Value.IsSelected
select pair.Key;
List<IFeature> selectedFeatures = query.ToList();
foreach (IFeature f in selectedFeatures)
{
bool doRemove = false;
if (_selectionMode == SelectionModes.IntersectsExtent)
{
if (region.Intersects(f.Envelope))
{
if (Remove(f))
{
removed = true;
affectedArea.ExpandToInclude(f.Envelope);
}
}
}
else if (_selectionMode == SelectionModes.ContainsExtent)
{
if (region.Contains(f.Envelope))
{
if (Remove(f))
{
removed = true;
affectedArea.ExpandToInclude(f.Envelope);
}
}
}
IPolygon reg = region.ToPolygon();
IGeometry geom = Geometry.FromBasicGeometry(f.BasicGeometry);
switch (_selectionMode)
{
case SelectionModes.Contains:
if (region.Intersects(f.Envelope))
{
if (reg.Contains(geom)) doRemove = true;
}
break;
case SelectionModes.CoveredBy:
if (reg.CoveredBy(geom)) doRemove = true;
break;
case SelectionModes.Covers:
if (reg.Covers(geom)) doRemove = true;
break;
case SelectionModes.Disjoint:
if (reg.Disjoint(geom)) doRemove = true;
break;
case SelectionModes.Intersects:
if(region.Intersects(f.Envelope))
{
if (reg.Intersects(geom)) doRemove = true;
}
break;
case SelectionModes.Overlaps:
if (reg.Overlaps(geom)) doRemove = true;
break;
case SelectionModes.Touches:
if (reg.Touches(geom)) doRemove = true;
break;
case SelectionModes.Within:
if (reg.Within(geom)) doRemove = true;
break;
}
if (doRemove)
{
if (Remove(f))
{
affectedArea.ExpandToInclude(f.Envelope);
removed = true;
}
}
}
ResumeChanges();
return removed;
}
/// <summary>
/// Adds any members found in the specified region to the selected state as long as SelectionEnabled is set to true.
/// </summary>
/// <param name="tolerant">The geographic region where selection occurs in cases like clicking near points where tolerance is allowed</param>
/// <param name="strict">The geographic region in cases like selecting polygons where no tolerance is allowed</param>
/// <param name="mode">The selection mode</param>
/// <param name="affectedArea">The envelope affected area</param>
/// <returns>Boolean, true if any members were added to the selection</returns>
public override bool UnSelect(IEnvelope tolerant, IEnvelope strict, SelectionModes mode, out IEnvelope affectedArea)
{
affectedArea = new Envelope();
if (!_selectionEnabled) return false;
bool somethingChanged = false;
SuspendEvents();
foreach (ILayer s in GetLayers())
{
IEnvelope layerArea;
if (s.UnSelect(tolerant, strict, mode, out layerArea)) somethingChanged = true;
affectedArea.ExpandToInclude(layerArea);
}
ResumeEvents();
OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
return somethingChanged;
}
/// <summary>
/// Inverts the selection based on the current SelectionMode
/// </summary>
/// <param name="region">The geographic region to reverse the selected state</param>
/// <param name="affectedArea">The affected area to invert</param>
public bool InvertSelection(IEnvelope region, out IEnvelope affectedArea)
{
SuspendChanges();
bool flipped = false;
affectedArea = new Envelope();
IDictionary<IFeature, IDrawnState> states = Filter.DrawnStates;
foreach (KeyValuePair<IFeature, IDrawnState> kvp in states)
{
bool doFlip = false;
IFeature f = kvp.Key;
if (SelectionMode == SelectionModes.IntersectsExtent)
{
if (region.Intersects(f.Envelope))
{
kvp.Value.IsSelected = !kvp.Value.IsSelected;
affectedArea.ExpandToInclude(f.Envelope);
}
}
else if (SelectionMode == SelectionModes.ContainsExtent)
{
if (region.Contains(f.Envelope))
{
kvp.Value.IsSelected = !kvp.Value.IsSelected;
affectedArea.ExpandToInclude(f.Envelope);
}
}
IPolygon reg = region.ToPolygon();
IGeometry geom = Geometry.FromBasicGeometry(f.BasicGeometry);
switch (SelectionMode)
{
case SelectionModes.Contains:
if (region.Intersects(f.Envelope))
{
if (reg.Contains(geom)) doFlip = true;
}
break;
case SelectionModes.CoveredBy:
if (reg.CoveredBy(geom)) doFlip = true;
break;
case SelectionModes.Covers:
if (reg.Covers(geom)) doFlip = true;
break;
case SelectionModes.Disjoint:
if (reg.Disjoint(geom)) doFlip = true;
break;
case SelectionModes.Intersects:
if (region.Intersects(f.Envelope))
{
if (reg.Intersects(geom)) doFlip = true;
}
break;
case SelectionModes.Overlaps:
if (reg.Overlaps(geom)) doFlip = true;
break;
case SelectionModes.Touches:
if (reg.Touches(geom)) doFlip = true;
break;
case SelectionModes.Within:
if (reg.Within(geom)) doFlip = true;
break;
}
if (doFlip)
{
flipped = true;
kvp.Value.IsSelected = !kvp.Value.IsSelected;
affectedArea.ExpandToInclude(f.Envelope);
}
}
ResumeChanges();
return flipped;
}
/// <summary>
/// This will draw any features that intersect this region. To specify the features
/// directly, use OnDrawFeatures. This will not clear existing buffer content.
/// For that call Initialize instead.
/// </summary>
/// <param name="args">A GeoArgs clarifying the transformation from geographic to image space</param>
/// <param name="regions">The geographic regions to draw</param>
public void DrawRegions(MapArgs args, List<IEnvelope> regions)
{
if (FeatureSet == null) return;
if(FeatureSet.IndexMode)
{
// First determine the number of features we are talking about based on region.
List<int> drawIndices = new List<int>();
foreach (IEnvelope region in regions)
{
if (region != null)
{
// We need to consider labels that go off the screen. figure a region
// that is larger.
IEnvelope sur = new Envelope(region.Copy());
sur.ExpandBy(region.Width, region.Height);
Extent r = new Extent(sur);
// Use union to prevent duplicates. No sense in drawing more than we have to.
drawIndices = drawIndices.Union(FeatureSet.SelectIndices(r)).ToList();
}
}
List<Rectangle> clips = args.ProjToPixel(regions);
DrawFeatures(args, drawIndices, clips, true);
}
else
{
// First determine the number of features we are talking about based on region.
List<IFeature> drawList = new List<IFeature>();
foreach (IEnvelope region in regions)
{
if (region != null)
{
// We need to consider labels that go off the screen. figure a region
// that is larger.
IEnvelope r = region.Copy();
r.ExpandBy(region.Width, region.Height);
// Use union to prevent duplicates. No sense in drawing more than we have to.
drawList = drawList.Union(FeatureSet.Select(r)).ToList();
}
}
List<Rectangle> clipRects = args.ProjToPixel(regions);
DrawFeatures(args, drawList, clipRects, true);
}
}
public override bool Select(IEnvelope tolerant, IEnvelope strict, SelectionModes mode, out IEnvelope affectedArea)
{
affectedArea = new Envelope();
if (!_selectionEnabled) return false;
bool somethingChanged = false;
MapFrame.SuspendEvents();
foreach (ILayer s in GetLayers())
{
if (s.SelectionEnabled == false) continue;
IEnvelope layerArea;
if(s.Select(tolerant, strict, mode, out layerArea)) somethingChanged = true;
affectedArea.ExpandToInclude(layerArea);
}
Stopwatch sw = new Stopwatch();
sw.Start();
MapFrame.ResumeEvents();
sw.Stop();
Debug.WriteLine("ResumeEvents: " + sw.ElapsedMilliseconds);
OnSelectionChanged(); // fires only AFTER the individual layers have fired their events.
return somethingChanged;
}
/// <summary>
/// Opens a *.mwprj file.
/// </summary>
/// <param name="filename">The string filename of the mwprj file to parse.</param>
public virtual void Open(string filename)
{
_doc.Open(filename);
Directory.SetCurrentDirectory(Path.GetDirectoryName(filename));
// Main document Properties
_name = _doc.ReadText("name");
_type = _doc.ReadText("type");
_version = _doc.ReadText("version");
_configPath = _doc.ReadText("ConfigurationPath");
_projection = _doc.ReadText("ProjectProjection");
_mapUnits = _doc.ReadText("MapUnits");
_backColor = _doc.ReadColor("ViewBackColor");
_useDefaultBackColor = _doc.ReadBool("ViewBackColor_UseDefault");
_scaleBar = new ScaleBarInfo();
_scaleBar.Visible = _doc.ReadBool("ShowFloatingScaleBar");
_scaleBar.Position = (ScaleBarPositions)Enum.Parse(typeof(ScaleBarPositions), _doc.ReadText("FloatingScaleBarPosition"));
_scaleBar.Unit = _doc.ReadText("FloatingScaleBarUnit");
_scaleBar.ForeColor = _doc.ReadColor("FloatingScaleBarForecolor");
_scaleBar.BackColor = _doc.ReadColor("FloatingScaleBarBackcolor");
_resizeBehavior = (ResizeBehaviors)_doc.ReadInteger("MapResizeBehavior");
_statusBar.GetFromProjection = _doc.ReadBool("ShowStatusBarCoords_Projected");
_statusBar.Alternate = _doc.ReadText("ShowStatusBarCoords_Alternate");
if (_doc.NavigateToChild("Plugins"))
{
foreach (XmlElement plugin in _doc.CurrentElement.ChildNodes)
{
PluginInfo pi = new PluginInfo(plugin.GetAttribute("SettingsString"), plugin.GetAttribute("Key"));
_plugins.Add(pi);
}
_doc.NavigateToParent();
}
if (_doc.NavigateToChild("ApplicationPlugins"))
{
foreach (XmlElement plugin in _doc.CurrentElement.ChildNodes)
{
PluginInfo pi = new PluginInfo(plugin.GetAttribute("SettingsString"), plugin.GetAttribute("Key"));
_plugins.Add(pi);
}
_doc.NavigateToParent();
}
if (_doc.NavigateToChild("Extents"))
{
double xMin = _doc.ReadDouble("xMin");
double xMax = _doc.ReadDouble("xMax");
double yMin = _doc.ReadDouble("yMin");
double yMax = _doc.ReadDouble("yMax");
_extents = new Envelope(xMin, xMax, yMin, yMax);
}
}
/// <summary>
///
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
private Node CreateSubnode(int index)
{
// create a new subquad in the appropriate quadrant
double minx = 0.0;
double maxx = 0.0;
double miny = 0.0;
double maxy = 0.0;
switch (index)
{
case 0:
minx = env.Minimum.X;
maxx = centre.X;
miny = env.Minimum.Y;
maxy = centre.Y;
break;
case 1:
minx = centre.X;
maxx = env.Maximum.X;
miny = env.Minimum.Y;
maxy = centre.Y;
break;
case 2:
minx = env.Minimum.X;
maxx = centre.X;
miny = centre.Y;
maxy = env.Maximum.Y;
break;
case 3:
minx = centre.X;
maxx = env.Maximum.X;
miny = centre.Y;
maxy = env.Maximum.Y;
break;
default:
break;
}
Envelope sqEnv = new Envelope(minx, maxx, miny, maxy);
Node node = new Node(sqEnv, level - 1);
return node;
}
/// <summary>
/// Removes any members from existing in the selected state
/// </summary>
public bool ClearSelection(out IEnvelope affectedArea)
{
affectedArea = new Envelope();
if (MapFrame == null) return false;
return MapFrame.ClearSelection(out affectedArea);
}
/// <summary>
///
/// </summary>
/// <param name="testExtents"></param>
/// <returns></returns>
public IEnvelope PixelToProj(RectangleF testExtents)
{
Coordinate UL = PixelToProj(new PointF(testExtents.Left, testExtents.Top));
Coordinate LR = PixelToProj(new PointF(testExtents.Right, testExtents.Bottom));
IEnvelope result = new Envelope(UL.X, UL.Y, (LR.X - UL.X), (LR.Y - UL.Y));
return result;
}
/// <summary>
/// Adds any members found in the specified region to the selected state as long as SelectionEnabled is set to true.
/// </summary>
/// <param name="strict">The tight envelope to use for polygons</param>
/// <param name="tolerant">The geographic region where selection occurs that is tolerant for point or linestrings</param>
/// <param name="mode">The selection mode</param>
/// <param name="affectedArea">The envelope affected area</param>
/// <returns>Boolean, true if any members were added to the selection</returns>
public bool UnSelect(IEnvelope tolerant, IEnvelope strict, SelectionModes mode, out IEnvelope affectedArea)
{
affectedArea = new Envelope();
if (MapFrame == null) return false;
return MapFrame.UnSelect(tolerant, strict, mode, out affectedArea);
}
