private int GetRingSizeFromEdge(BondVisual start, Point currentPoint)
{
var bond = start.ParentBond;
var midPoint = bond.MidPoint;
var uncrowdedSideVector = bond.GetUncrowdedSideVector();
if (uncrowdedSideVector != null)
{
Vector perp = GetProjection(uncrowdedSideVector.Value, midPoint,
currentPoint);
var distance = Math.Abs((currentPoint - midPoint).Length);
return GetRingSize(Math.Abs(bond.BondVector.Length), distance);
}
return 3;
}
private void RedrawBond(Bond bond)
{
int refCount = 1;
BondVisual bv = null;
if (chemicalVisuals.ContainsKey(bond))
{
bv = (BondVisual)chemicalVisuals[bond];
refCount = bv.RefCount;
BondRemoved(bond);
}
BondAdded(bond);
bv = (BondVisual)chemicalVisuals[bond];
bv.RefCount = refCount;
}
private void BondAdded(Bond bond)
{
if (!chemicalVisuals.ContainsKey(bond)) //it's already in the list
{
chemicalVisuals[bond] = new BondVisual(bond);
}
BondVisual bv = (BondVisual)chemicalVisuals[bond];
if (bv.RefCount == 0) // it hasn't been added before
{
bv.ChemicalVisuals = chemicalVisuals;
bv.BondThickness = Globals.BondThickness;
bv.Render();
AddVisual(bv);
}
bv.RefCount++;
}
protected override void OnRender(DrawingContext drawingContext)
{
_ghostBrush = (SolidColorBrush)FindResource(Globals.GhostBrush);
_ghostPen = new Pen(_ghostBrush, Globals.BondThickness);
HashSet <Bond> bondSet = new HashSet <Bond>();
Dictionary <Atom, Point> transformedPositions = new Dictionary <Atom, Point>();
//compile a set of all the neighbours of the selected atoms
foreach (Atom atom in _atomList)
{
foreach (Atom neighbour in atom.Neighbours)
{
//add in all the existing position for neigbours not in selected atoms
if (!_atomList.Contains(neighbour))
{
//neighbourSet.Add(neighbour); //don't worry about adding them twice
transformedPositions[neighbour] = neighbour.Position;
}
}
//add in the bonds
foreach (Bond bond in atom.Bonds)
{
bondSet.Add(bond); //don't worry about adding them twice
}
//if we're just getting an overlay then don't bother transforming
if (_shear != null)
{
transformedPositions[atom] = _shear.Transform(atom.Position);
}
else
{
transformedPositions[atom] = atom.Position;
}
}
var modelXamlBondLength = CurrentViewModel.Model.XamlBondLength;
double atomRadius = modelXamlBondLength / 7.50;
foreach (Bond bond in bondSet)
{
List <Point> throwaway = new List <Point>();
var startAtomPosition = transformedPositions[bond.StartAtom];
var endAtomPosition = transformedPositions[bond.EndAtom];
if (bond.OrderValue != 1.0 ||
!(bond.Stereo == Globals.BondStereo.Hatch | bond.Stereo == Globals.BondStereo.Wedge))
{
var descriptor = BondVisual.GetBondDescriptor(CurrentEditor.GetAtomVisual(bond.StartAtom),
CurrentEditor.GetAtomVisual(bond.EndAtom),
modelXamlBondLength,
bond.Stereo, startAtomPosition, endAtomPosition,
bond.OrderValue,
bond.Placement, bond.Centroid,
bond.SubsidiaryRing?.Centroid);
descriptor.Start = startAtomPosition;
descriptor.End = endAtomPosition;
var bondgeom = descriptor.DefiningGeometry;
drawingContext.DrawGeometry(_ghostBrush, _ghostPen, bondgeom);
}
else
{
drawingContext.DrawLine(_ghostPen, startAtomPosition, endAtomPosition);
}
}
foreach (Atom atom in transformedPositions.Keys)
{
var newPosition = transformedPositions[atom];
if (atom.SymbolText != "")
{
drawingContext.DrawEllipse(SystemColors.WindowBrush, _ghostPen, newPosition, atomRadius, atomRadius);
}
}
}
public BondHoverAdorner(UIElement adornedElement, BondVisual targetedVisual) : this(adornedElement)
{
_targetedVisual = targetedVisual;
_targetedBond = _targetedVisual.ParentBond;
}
