public bool IsEqual(IClone other)
{
//1. make sure that the 'other' object is pointing to a valid object
if (null == other)
{
throw new COMException("Invalid object.");
}
//2. verify the type of 'other'
if (!(other is TriangleElementClass))
{
throw new COMException("Bad object type.");
}
TriangleElementClass otherTriangle = (TriangleElementClass)other;
//test that all of the object's properties are the same.
//please note the usage of IsEqual when using ArcObjects components that
//supports cloning
if (otherTriangle.Name == m_elementName &&
otherTriangle.Type == m_elementType &&
otherTriangle.AutoTransform == m_autoTrans &&
otherTriangle.ReferenceScale == m_scaleRef &&
otherTriangle.Angle == m_rotation &&
otherTriangle.Size == m_size &&
otherTriangle.AnchorPoint == m_anchorPointType &&
((IClone)otherTriangle.Geometry).IsEqual((IClone)m_triangle) &&
((IClone)otherTriangle.FillSymbol).IsEqual((IClone)m_fillSymbol) &&
((IClone)otherTriangle.SpatialReference).IsEqual((IClone)m_nativeSR))
{
return(true);
}
return(false);
}
public IClone Clone()
{
TriangleElementClass triangle = new TriangleElementClass();
triangle.Assign((IClone)this);
return((IClone)triangle);
}
public override void OnMouseDown(int Button, int Shift, int X, int Y)
{
//set the color for the symbol's outline
IColor color = (IColor)ESRI.ArcGIS.ADF.Connection.Local.Converter.ToRGBColor(Color.Black);
//create the triangle outline symbol
ISimpleLineSymbol lineSymbol = new SimpleLineSymbolClass();
lineSymbol.Color = color;
lineSymbol.Style = esriSimpleLineStyle.esriSLSSolid;
lineSymbol.Width = 2.0;
//create the triangle's fill symbol
color = (IColor)Converter.ToRGBColor(Color.Gold);
color.Transparency = 50;
ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbolClass();
simpleFillSymbol.Color = color;
simpleFillSymbol.Outline = (ILineSymbol)lineSymbol;
simpleFillSymbol.Style = esriSimpleFillStyle.esriSFSDiagonalCross;
//create a new triangle element
ITriangleElement triangleElement = new TriangleElementClass();
triangleElement.Angle = 40.0;
triangleElement.Size = 25;
triangleElement.FillSymbol = simpleFillSymbol;
//set the geometry of the element
IPoint point = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
IElement element = (IElement)triangleElement;
element.Geometry = (IGeometry)point;
//add the graphics element to the map
IGraphicsContainer graphicsContainer = (IGraphicsContainer)m_hookHelper.FocusMap;
graphicsContainer.AddElement(element, 0);
m_hookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
}
public void Assign(IClone src)
{
//1. make sure that src is pointing to a valid object
if (null == src)
{
throw new COMException("Invalid object.");
}
//2. make sure that the type of src is of type 'TriangleElementClass'
if (!(src is TriangleElementClass))
{
throw new COMException("Bad object type.");
}
//3. assign the properties of src to the current instance
TriangleElementClass srcTriangle = (TriangleElementClass)src;
m_elementName = srcTriangle.Name;
m_elementType = srcTriangle.Type;
m_autoTrans = srcTriangle.AutoTransform;
m_scaleRef = srcTriangle.ReferenceScale;
m_rotation = srcTriangle.Angle;
m_size = srcTriangle.Size;
m_anchorPointType = srcTriangle.AnchorPoint;
IObjectCopy objCopy = new ObjectCopyClass();
//take care of the custom property
if (null != srcTriangle.CustomProperty)
{
if (srcTriangle.CustomProperty is IClone)
{
m_customProperty = (object)((IClone)srcTriangle.CustomProperty).Clone();
}
else if (srcTriangle.CustomProperty is IPersistStream)
{
m_customProperty = objCopy.Copy((object)srcTriangle.CustomProperty);
}
else if (srcTriangle.CustomProperty.GetType().IsSerializable)
{
//serialize to a memory stream
MemoryStream memoryStream = new MemoryStream();
BinaryFormatter binaryFormatter = new BinaryFormatter();
binaryFormatter.Serialize(memoryStream, srcTriangle.CustomProperty);
byte[] bytes = memoryStream.ToArray();
memoryStream = new MemoryStream(bytes);
m_customProperty = binaryFormatter.Deserialize(memoryStream);
}
}
if (null != srcTriangle.SpatialReference)
{
m_nativeSR = objCopy.Copy(srcTriangle.SpatialReference) as ISpatialReference;
}
else
{
m_nativeSR = null;
}
if (null != srcTriangle.FillSymbol)
{
m_fillSymbol = objCopy.Copy(srcTriangle.FillSymbol) as ISimpleFillSymbol;
}
else
{
m_fillSymbol = null;
}
if (null != srcTriangle.Geometry)
{
m_triangle = objCopy.Copy(srcTriangle.Geometry) as IPolygon;
m_pointGeometry = objCopy.Copy(((IArea)m_triangle).Centroid) as IPoint;
}
else
{
m_triangle = null;
m_pointGeometry = null;
}
}
public IClone Clone()
{
TriangleElementClass triangle = new TriangleElementClass();
triangle.Assign((IClone)this);
return (IClone)triangle;
}
public override void OnMouseDown(int Button, int Shift, int X, int Y)
{
//set the color for the symbol's outline
IColor color = (IColor)ESRI.ArcGIS.ADF.Connection.Local.Converter.ToRGBColor(Color.Black);
//create the triangle outline symbol
ISimpleLineSymbol lineSymbol = new SimpleLineSymbolClass();
lineSymbol.Color = color;
lineSymbol.Style = esriSimpleLineStyle.esriSLSSolid;
lineSymbol.Width = 2.0;
//create the triangle's fill symbol
color = (IColor)Converter.ToRGBColor(Color.Gold);
color.Transparency = 50;
ISimpleFillSymbol simpleFillSymbol = new SimpleFillSymbolClass();
simpleFillSymbol.Color = color;
simpleFillSymbol.Outline = (ILineSymbol)lineSymbol;
simpleFillSymbol.Style = esriSimpleFillStyle.esriSFSDiagonalCross;
//create a new triangle element
ITriangleElement triangleElement = new TriangleElementClass();
triangleElement.Angle = 40.0;
triangleElement.Size = 25;
triangleElement.FillSymbol = simpleFillSymbol;
//set the geometry of the element
IPoint point = m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
IElement element = (IElement)triangleElement;
element.Geometry = (IGeometry)point;
//add the graphics element to the map
IGraphicsContainer graphicsContainer = (IGraphicsContainer)m_hookHelper.FocusMap;
graphicsContainer.AddElement(element, 0);
m_hookHelper.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
}