private void Traverse(IRenderingElement newElement)
{
var stack = new Deque <IRenderingElement>();
stack.Push(newElement);
while (stack.Any())
{
var element = stack.Poll();
switch (element)
{
case Bounds e:
Add(e);
break;
case GeneralPath e:
Add(e);
break;
case LineElement lineElem:
var vec = lineElem.SecondPoint - lineElem.FirstPoint;
var ortho = new WPF::Vector(-vec.Y, vec.X);
ortho.Normalize();
vec.Normalize();
ortho *= lineElem.Width / 2; // stroke width
vec *= lineElem.Width / 2; // stroke rounded also makes line longer
Add(lineElem.FirstPoint - vec + ortho);
Add(lineElem.SecondPoint + vec + ortho);
Add(lineElem.FirstPoint - vec - ortho);
Add(lineElem.SecondPoint + vec - ortho);
break;
case OvalElement oval:
Add(new Point(oval.Coord.X - oval.Radius, oval.Coord.Y));
Add(new Point(oval.Coord.X + oval.Radius, oval.Coord.Y));
Add(new Point(oval.Coord.X, oval.Coord.Y - oval.Radius));
Add(new Point(oval.Coord.X, oval.Coord.Y + oval.Radius));
break;
case ElementGroup elementGroup:
stack.AddRange(elementGroup);
break;
case MarkedElement e:
stack.Add(e.Element());
break;
default:
// ignored from bounds calculation, we don't really
// care but log we skipped it
Trace.TraceWarning($"{element.GetType()} not included in bounds calculation");
break;
}
}
}
/// <inheritdoc/>
public IRenderingElement Generate(IAtomContainer container, RendererModel model)
{
ElementGroup group = new ElementGroup();
// TODO : put into RendererModel
const double SCREEN_RADIUS = 1.0;
// separation between centers
const double SCREEN_SEPARATION = 2.5;
Color RADICAL_COLOR = WPF.Media.Colors.Black;
// XXX : is this the best option?
double ATOM_RADIUS = model.GetAtomRadius();
double scale = model.GetScale();
double modelAtomRadius = ATOM_RADIUS / scale;
double modelPointRadius = SCREEN_RADIUS / scale;
double modelSeparation = SCREEN_SEPARATION / scale;
foreach (var lonePair in container.LonePairs)
{
IAtom atom = lonePair.Atom;
Vector2 point = atom.Point2D.Value;
int align = GeometryUtil.GetBestAlignmentForLabelXY(container, atom);
var center = ToPoint(point);
var diff = new WPF::Vector();
if (align == 1)
{
center.X += modelAtomRadius;
diff.Y += modelSeparation;
}
else if (align == -1)
{
center.X -= modelAtomRadius;
diff.Y += modelSeparation;
}
else if (align == 2)
{
center.Y -= modelAtomRadius;
diff.X += modelSeparation;
}
else if (align == -2)
{
center.Y += modelAtomRadius;
diff.X += modelSeparation;
}
group.Add(new OvalElement(center + diff, modelPointRadius, true, RADICAL_COLOR));
group.Add(new OvalElement(center - diff, modelPointRadius, true, RADICAL_COLOR));
}
return(group);
}
/// <summary> /// Convert a WPF point to a <see cref="NCDK.Numerics.Vector2"/>. /// </summary> /// <param name="vector">WPF point</param> /// <returns><see cref="NCDK.Numerics.Vector2"/> point</returns> public static Vector2 ToVector2(WPF::Vector vector) => new Vector2(vector.X, vector.Y);
public static WPF::Vector NewPerpendicularVector(WPF::Vector vector)
{
return(new WPF::Vector(-vector.Y, vector.X));
}