I tried to get graphics in an ILayar class and implemented ILayerEffects to get semi-transparent in the layer properties but it does not help can you help me? I am attaching the class file.
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geometry;
namespace FirstAddin{
[Guid("0428816a-083f-47a1-9385-8e85b11032f4")]
[ClassInterface(ClassInterfaceType.None)]
[ProgId("FirstAddin.MyGraphicsLayer")]
public class MyGraphicsLayer : ESRI.ArcGIS.Carto.ILayer ,
IPersistVariant,
IGeoDataset,
ILayerEffects
{
private IGeometry mextgom;
private ISpatialReference mLayersSpatialReference;
private ISpatialReference mSpatialReference;
private IPolygon mpolygon;
private bool mCached;
private bool mVisible;
private string mName;
private bool mValid;
private Double mMaxScale;
private Double mMinScale;
private short mtransp;
public MyGraphicsLayer(ISpatialReference sp){
CreatePolygonByPoints();
mSpatialReference = sp;
mValid = true;
mtransp = 0;
mName ="MyGraphicsLayer";
}
#region "ILayer Implementations"
public ESRI.ArcGIS.Geometry.IEnvelope AreaOfInterest
{
get
{
// TODO: Add MyGraphicsLayer.AreaOfInterest getter implementation
return Extent;
}
}
public bool Cached
{
get
{
// TODO: Add MyGraphicsLayer.Cached getter implementation
return mCached;
}
set
{
mCached = value;
// TODO: Add MyGraphicsLayer.Cached setter implementation
}
}
public void Draw(ESRI.ArcGIS.esriSystem.esriDrawPhase DrawPhase, ESRI.ArcGIS.Display.IDisplay Display, ESRI.ArcGIS.esriSystem.ITrackCancel TrackCancel)
{
// TODO: Add MyGraphicsLayer.Draw implementation
if (Display == null)
{
return;
}
ESRI.ArcGIS.Display.IScreenDisplay screenDisplay =(ESRI.ArcGIS.Display.IScreenDisplay) Display;
// Constant.
ESRI.ArcGIS.Display.IRgbColor rgbColor = new
ESRI.ArcGIS.Display.RgbColorClass();
rgbColor.Red = 255;
ESRI.ArcGIS.Display.IColor color = rgbColor; // Implicit cast.
ESRI.ArcGIS.Display.ISimpleFillSymbol simpleFillSymbol = new
ESRI.ArcGIS.Display.SimpleFillSymbolClass();
simpleFillSymbol.Color.NullColor = true;
simpleFillSymbol.Color = color;
ESRI.ArcGIS.Display.ISymbol symbol = simpleFillSymbol as
ESRI.ArcGIS.Display.ISymbol; // Dynamic cast.
//ESRI.ArcGIS.Display.IRubberBand rubberBand = new
// ESRI.ArcGIS.Display.RubberPolygonClass();
//ESRI.ArcGIS.Geometry.IGeometry geometry = rubberBand.TrackNew(screenDisplay,
// symbol);
ESRI.ArcGIS.Geometry.IGeometry geometry = (IGeometry)mpolygon;
Display.SetSymbol(symbol);
Display.DrawPolygon(geometry);
}
public double MaximumScale
{
get
{
// TODO: Add MyGraphicsLayer.MaximumScale getter implementation
return mMaxScale;
}
set
{
// TODO: Add MyGraphicsLayer.MaximumScale setter implementation
mMaxScale = value;
}
}
public double MinimumScale
{
get
{
// TODO: Add MyGraphicsLayer.MinimumScale getter implementation
return mMinScale;
}
set
{
// TODO: Add MyGraphicsLayer.MinimumScale setter implementation
mMinScale = value;
}
}
public string Name
{
get
{
// TODO: Add MyGraphicsLayer.Name getter implementation
return mName;
}
set
{
// TODO: Add MyGraphicsLayer.Name setter implementation
mName = value;
}
}
public bool ShowTips
{
get
{
// TODO: Add MyGraphicsLayer.ShowTips getter implementation
return false;
}
set
{
// TODO: Add MyGraphicsLayer.ShowTips setter implementation
}
}
public ESRI.ArcGIS.Geometry.ISpatialReference SpatialReference
{
set
{
// TODO: Add MyGraphicsLayer.SpatialReference setter implementation
mLayersSpatialReference = value;
}
}
public int SupportedDrawPhases
{
get
{
// TODO: Add MyGraphicsLayer.SupportedDrawPhases getter implementation
return Convert.ToInt32(esriDrawPhase.esriDPGeography | esriDrawPhase.esriDPSelection);
}
}
public bool Valid
{
get
{
// TODO: Add MyGraphicsLayer.Valid getter implementation
return mValid ;
}
}
public bool Visible
{
get
{
// TODO: Add MyGraphicsLayer.Visible getter implementation
return mVisible;
}
set
{
// TODO: Add MyGraphicsLayer.Visible setter implementation
mVisible = value;
}
}
public string get_TipText(double x, double y, double Tolerance)
{
// TODO: Add MyGraphicsLayer.get_TipText implementation
return default(string);
}
#endregion
#region "IPersistVariant"
public UID ID
{
get {
UID uid = new UIDClass();
uid.Value = "FirstAddin.MyGraphicsLayer";
return uid;
}
}
public void Load(IVariantStream Stream)
{
mName = (string)Stream.Read();
mVisible = (bool)Stream.Read();
mValid = (bool)Stream.Read();
mtransp = (short)Stream.Read();
mCached = (bool)Stream.Read();
mMaxScale = (double)Stream.Read();
mMinScale = (double)Stream.Read();
}
public void Save(IVariantStream Stream)
{
Stream.Write(mName);
Stream.Write( mVisible);
Stream.Write(mValid);
Stream.Write(mtransp);
Stream.Write(mCached);
Stream.Write(mMaxScale);
Stream.Write( mMinScale);
}
#endregion
#region "IGeoDataset"
public ESRI.ArcGIS.Geometry.IEnvelope Extent
{
get { return mpolygon.Envelope; }
}
ESRI.ArcGIS.Geometry.ISpatialReference IGeoDataset.SpatialReference
{
get { return mSpatialReference; }
}
#endregion
#region "ILayerEffects"
public short Brightness
{
get
{
throw new NotImplementedException();
}
set
{
throw new NotImplementedException();
}
}
public short Contrast
{
get
{
throw new NotImplementedException();
}
set
{
throw new NotImplementedException();
}
}
public bool SupportsBrightnessChange
{
get { throw new NotImplementedException(); }
}
public bool SupportsContrastChange
{
get { throw new NotImplementedException(); }
}
public bool SupportsInteractive
{
get
{
throw new NotImplementedException();
}
set
{
throw new NotImplementedException();
}
}
public bool SupportsTransparency
{
get { throw new NotImplementedException(); }
}
public short Transparency
{
get
{
return mtransp;
}
set
{
mtransp =value ;
}
}
#endregion
#region "Private"
public void CreatePolygonByPoints()
{
//Build polygon from a sequence of points.
//At ArcGIS 9.2, the recommended way to add arrays of points to a geometry is to use
//the IGeometryBridge2 interface on the GeometryEnvironment singleton object.
IGeometryBridge2 geometryBridge2 = new GeometryEnvironmentClass();
IPointCollection4 pointCollection4 = new PolygonClass();
//TODO:
//pointCollection4.SpatialReference = 'Define the spatial reference of the new polygon
WKSPoint[] aWKSPointBuffer = null;
long cPoints = 4; //The number of points in the first part
aWKSPointBuffer = new WKSPoint[System.Convert.ToInt32(cPoints - 1) + 1];
aWKSPointBuffer[0].X= 185680.7286;
aWKSPointBuffer[0].Y = 6476124.6791;
aWKSPointBuffer[1].X = 188970.8289;
aWKSPointBuffer[1].Y = 6476124.6791;
aWKSPointBuffer[2].X = 188970.8289;
aWKSPointBuffer[2].Y = 6478712.3093;
aWKSPointBuffer[3].X = 185680.7286;
aWKSPointBuffer[3].Y = 6478712.3093;
//TODO:
//aWKSPointBuffer = 'Read cPoints into the point buffer
geometryBridge2.SetWKSPoints(pointCollection4, ref aWKSPointBuffer);
mpolygon = (IPolygon)pointCollection4;
mpolygon.SpatialReference = mSpatialReference;
//pointCollection4 has now been defined
}
#endregion
}
}
