/// <summary>
/// Generate a LineElement or an ElementGroup of LineElements for this bond.
/// This version should be used if you want to override the type - for
/// example, for ring double bonds.
/// </summary>
/// <param name="bond">the bond to generate for</param>
/// <param name="type">the type of the bond - single, double, etc</param>
/// <param name="model">the renderer model</param>
/// <returns>one or more rendering elements</returns>
public virtual IRenderingElement GenerateBondElement(IBond bond, BondOrder type, RendererModel model)
{
// More than 2 atoms per bond not supported by this module
if (bond.Atoms.Count > 2)
{
return(null);
}
// is object right? if not replace with a good one
Vector2 point1 = bond.Begin.Point2D.Value;
Vector2 point2 = bond.End.Point2D.Value;
Color color = this.GetColorForBond(bond, model);
double bondWidth = this.GetWidthForBond(bond, model);
double bondDistance = model.GetBondDistance() / model.GetScale();
if (type == BondOrder.Single)
{
return(new LineElement(ToPoint(point1), ToPoint(point2), bondWidth, color));
}
else
{
ElementGroup group = new ElementGroup();
switch (type)
{
case BondOrder.Double:
CreateLines(point1, point2, bondWidth, bondDistance, color, group);
break;
case BondOrder.Triple:
CreateLines(point1, point2, bondWidth, bondDistance * 2, color, group);
group.Add(new LineElement(ToPoint(point1), ToPoint(point2), bondWidth, color));
break;
case BondOrder.Quadruple:
CreateLines(point1, point2, bondWidth, bondDistance, color, group);
CreateLines(point1, point2, bondWidth, bondDistance * 4, color, group);
break;
default:
break;
}
return(group);
}
}