protected override void OnRender(DrawingContext drawingContext)
{
if (ParentBond.OrderValue == 1.5)
{
Point point1, point2, point3, point4;
Point?centroid = null;
if (ParentBond.IsCyclic())
{
centroid = ParentBond.PrimaryRing?.Centroid;
}
_enclosingPoly = BondGeometry.GetDoubleBondPoints(StartPoint.Value, EndPoint.Value,
Placement, centroid, out point1,
out point2, out point3, out point4);
Pen solidPen = new Pen(Fill, StrokeThickness);
Pen dashedPen = solidPen.Clone();
dashedPen.DashStyle = DashStyles.Dash;
drawingContext.DrawLine(solidPen, point1, point2);
drawingContext.DrawLine(dashedPen, point3, point4);
//drawingContext.Close();
}
else
{
base.OnRender(drawingContext);
}
}
public System.Windows.Media.Geometry GetBondGeometry(Point?startPoint, Point?endPoint)
{
//Vector startOffset = new Vector();
//Vector endOffset = new Vector();
if (startPoint != null & endPoint != null)
{
//check to see if it's a wedge or a hatch yet
if (ParentBond.Stereo == BondStereo.Wedge | ParentBond.Stereo == BondStereo.Hatch)
{
return(BondGeometry.WedgeBondGeometry(startPoint.Value, endPoint.Value));
}
if (ParentBond.Stereo == BondStereo.Indeterminate && ParentBond.OrderValue == 1.0)
{
return(BondGeometry.WavyBondGeometry(startPoint.Value, endPoint.Value));
}
//single or dotted bond
if (ParentBond.OrderValue <= 1)
{
return(BondGeometry.SingleBondGeometry(startPoint.Value, endPoint.Value));
}
if (ParentBond.OrderValue == 1.5)
{
//it's a resonance bond, so we deal with this in OnRender
//return BondGeometry.SingleBondGeometry(startPoint.Value, endPoint.Value);
return(new StreamGeometry());
}
//double bond
if (ParentBond.OrderValue == 2)
{
if (ParentBond.Stereo == BondStereo.Indeterminate)
{
return(BondGeometry.CrossedDoubleGeometry(startPoint.Value, endPoint.Value, ref _enclosingPoly));
}
Point?centroid = null;
if (ParentBond.IsCyclic())
{
centroid = ParentBond.PrimaryRing?.Centroid;
}
return(BondGeometry.DoubleBondGeometry(startPoint.Value, endPoint.Value, Placement,
ref _enclosingPoly, centroid));
}
//tripe bond
if (ParentBond.OrderValue == 3)
{
return(BondGeometry.TripleBondGeometry(startPoint.Value, endPoint.Value, ref _enclosingPoly));
}
return(null);
}
return(null);
}