private double PointsToMap(ESRI.ArcGIS.Geometry.ITransformation displayTransform, double dPointSize)
{
double tempPointsToMap = 0;
ESRI.ArcGIS.Display.IDisplayTransformation tempTransform = null;
if (displayTransform == null)
tempPointsToMap = dPointSize * m_dDeviceRatio;
else
{
tempTransform = (IDisplayTransformation)displayTransform;
tempPointsToMap = tempTransform.FromPoints(dPointSize);
}
return tempPointsToMap;
}
void ESRI.ArcGIS.Display.ISymbol.QueryBoundary(int hDC, ESRI.ArcGIS.Geometry.ITransformation displayTransform, ESRI.ArcGIS.Geometry.IGeometry Geometry, ESRI.ArcGIS.Geometry.IPolygon Boundary)
{
// Check input parameters. Boundary may be a preexisting Polygon, so
// make sure it's geometry is cleared.
if (Geometry == null | Boundary == null)
return;
if (!(Geometry is ESRI.ArcGIS.Geometry.IPoint))
return;
Boundary.SetEmpty();
IPoint point = (IPoint)Geometry;
IDisplayTransformation displayTransformation = (IDisplayTransformation)displayTransform;
QueryBoundsFromGeom(hDC, ref displayTransformation, ref Boundary, ref point);
}
void ESRI.ArcGIS.Display.ISymbol.SetupDC(int hDC, ESRI.ArcGIS.Geometry.ITransformation Transformation)
{
//// Store the DisplayTransformation and display handle for use by Draw and ResetDC.
//m_trans = Transformation as IDisplayTransformation;
//m_lhDC = hDC;
//// Set up the device ratio for use by Draw and the rest of SetupDC.
//SetupDeviceRatio(m_lhDC, m_trans);
////Calculate the new Radius for the symbol from the Size (width) overall.
////Dim dRadius As Double
////m_dDeviceRadius = m_dSize / 2 ' This is the simplistic method, actually results in symbol slightly wrong size.
////m_dDeviceRadius = m_dSize / ((2 * Cos(45)) - Cos(45) + 1)
//m_dDeviceRadius = (m_dSize / 2) * m_dDeviceRatio;
//m_dDeviceXOffset = m_dXOffset * m_dDeviceRatio;
//m_dDeviceYOffset = m_dYOffset * m_dDeviceRatio;
//// Check if we need to rotate the symbol based on the ISymbolRotation interface.
//if (m_bRotWithTrans)
// m_dMapRotation = m_trans.Rotation;
//else
// m_dMapRotation = 0;
//// Setup the Pen which is used to outline the shapes.
//// multiplying by m_dDeviceRatio allows the pen size to scale
//m_lPen = Utility.CreatePen(0, Convert.ToInt32(1 * m_dDeviceRatio), System.Convert.ToInt32(m_colorBorder.RGB));
//// Set the appropriate raster operation code for this draw, according to the
//// ISymbol interface.
//m_lROP2Old = (esriRasterOpCode)Utility.SetROP2(hDC, System.Convert.ToInt32(m_lROP2));
//// Set up three solid brushes to fill in the shapes with the different color fills.
//m_lBrushTop = Utility.CreateSolidBrush(System.Convert.ToInt32(m_colorTop.RGB));
//m_lBrushLeft = Utility.CreateSolidBrush(System.Convert.ToInt32(m_colorLeft.RGB));
//m_lBrushRight = Utility.CreateSolidBrush(System.Convert.ToInt32(m_colorRight.RGB));
//// Select in the new pen and store the old pen - essential for use during cleanup.
//m_lOldPen = Utility.SelectObject(hDC, m_lPen);
}
void ESRI.ArcGIS.Display.IMarkerMask.QueryMarkerMask(int hDC, ESRI.ArcGIS.Geometry.ITransformation Transform, ESRI.ArcGIS.Geometry.IGeometry Geometry, ESRI.ArcGIS.Geometry.IPolygon Boundary)
{
// Code QueryBoundary using same steps as Draw. But add a step where
// Points are converted to Map units, and then build an appropriate Polygon.
if (Geometry == null | Boundary == null)
return;
if (!(Transform is ESRI.ArcGIS.Display.IDisplayTransformation))
return;
if (!(Geometry is ESRI.ArcGIS.Geometry.IPoint))
return;
Boundary.SetEmpty();
IPoint point = Geometry as IPoint;
IDisplayTransformation displayTrans = (IDisplayTransformation)Transform;
QueryBoundsFromGeom(hDC, ref displayTrans, ref Boundary, ref point);
// Unlike ISymbol.QueryBoundary, QueryMarkerMask requires a Simple geometry.
ITopologicalOperator topo = Boundary as ITopologicalOperator;
if (!topo.IsKnownSimple)
{
if (!topo.IsSimple)
topo.Simplify();
}
}
