/// <summary> /// Defines the three parallel lines of a Triple bond. /// </summary> /// <param name="standardBondLength">Standard bond length as defined by the model</param> /// <param name="standoff">Boundary width between atom label and bond terminus</param> /// <param name="descriptor.StartAtomHull">AtomVisual defining the starting atom</param> /// <param name="descriptor.EndAtomHull">AtomVisual defining the end atom</param> /// <returns></returns> public static void GetTripleBondGeometry(TripleBondLayout descriptor, double standardBondLength, double standoff) { //start by getting the six points that define a standard triple bond GetTripleBondPoints(descriptor, standardBondLength, standoff); //and draw it var sg = new StreamGeometry(); using (var sgc = sg.Open()) { sgc.BeginFigure(descriptor.Start, false, false); sgc.LineTo(descriptor.Start, true, false); sgc.BeginFigure(descriptor.SecondaryStart, false, false); sgc.LineTo(descriptor.SecondaryEnd, true, false); sgc.BeginFigure(descriptor.TertiaryStart, false, false); sgc.LineTo(descriptor.TertiaryEnd, true, false); sgc.Close(); } sg.Freeze(); descriptor.DefiningGeometry = sg; }
/// <summary> /// 'Draws' the triple bond /// </summary>StartAtomVisual /// <param name="descriptor">TripleBondDescriptor which is populated</param> /// <param name="standardBondLength">Standard bond length as defined by the model</param> /// <param name="standoff">Boundary width between atom label and bond terminus</param> public static void GetTripleBondPoints(TripleBondLayout descriptor, double standardBondLength, double standoff) { //get a standard perpendicular vector var v = descriptor.PrincipleVector; var normal = v.Perpendicular(); normal.Normalize(); //offset the secondaries var distance = standardBondLength * Globals.BondOffsetPercentage; descriptor.SecondaryStart = descriptor.Start + normal * distance; descriptor.SecondaryEnd = descriptor.SecondaryStart + v; descriptor.TertiaryStart = descriptor.Start - normal * distance; descriptor.TertiaryEnd = descriptor.TertiaryStart + v; //adjust the line ends if (descriptor.StartAtomHull != null) { AdjustTerminus(ref descriptor.Start, descriptor.End, descriptor.StartAtomHull, standoff); AdjustTerminus(ref descriptor.SecondaryStart, descriptor.SecondaryEnd, descriptor.StartAtomHull, standoff); AdjustTerminus(ref descriptor.TertiaryStart, descriptor.TertiaryEnd, descriptor.StartAtomHull, standoff); } if (descriptor.EndAtomHull != null) { AdjustTerminus(ref descriptor.End, descriptor.Start, descriptor.EndAtomHull, standoff); AdjustTerminus(ref descriptor.SecondaryEnd, descriptor.SecondaryStart, descriptor.EndAtomHull, standoff); AdjustTerminus(ref descriptor.TertiaryEnd, descriptor.TertiaryStart, descriptor.EndAtomHull, standoff); } //and define the boundary for hit testing descriptor.Boundary.Clear(); descriptor.Boundary.AddRange(new[] { descriptor.SecondaryStart, descriptor.SecondaryEnd, descriptor.TertiaryEnd, descriptor.TertiaryStart }); }
public static BondLayout GetBondDescriptor(AtomVisual startAtomVisual, AtomVisual endAtomVisual, double modelXamlBondLength, Globals.BondStereo parentStereo, Point startAtomPosition, Point endAtomPosition, double?parentOrderValue, Globals.BondDirection parentPlacement, Point?centroid, Point?secondaryCentroid) { if (parentStereo == Globals.BondStereo.Wedge || parentStereo == Globals.BondStereo.Hatch) { WedgeBondLayout wbd = new WedgeBondLayout() { Start = startAtomPosition, End = endAtomPosition, StartAtomVisual = startAtomVisual, EndAtomVisual = endAtomVisual }; var endAtom = endAtomVisual.ParentAtom; var otherBonds = endAtom.Bonds.Except(new[] { startAtomVisual.ParentAtom.BondBetween(endAtom) }).ToList(); Bond bond = null; if (otherBonds.Any()) { bond = otherBonds.ToArray()[0]; } bool chamferBond = (otherBonds.Any() && (endAtom.Element as Element) == Globals.PeriodicTable.C && endAtom.SymbolText == "" && bond.Order == Globals.OrderSingle); if (!chamferBond) { wbd.CappedOff = false; BondGeometry.GetWedgeBondGeometry(wbd, modelXamlBondLength); } else { var nonHPs = (from b in otherBonds select b.OtherAtom(endAtom).Position).ToList(); if (nonHPs.Any()) { wbd.CappedOff = true; BondGeometry.GetChamferedWedgeGeometry(wbd, modelXamlBondLength, nonHPs); } else { wbd.CappedOff = false; BondGeometry.GetWedgeBondGeometry(wbd, modelXamlBondLength); } } return(wbd); } //wavy bond if (parentStereo == Globals.BondStereo.Indeterminate && parentOrderValue == 1.0) { BondLayout sbd = new BondLayout { Start = startAtomPosition, End = endAtomPosition, StartAtomVisual = startAtomVisual, EndAtomVisual = endAtomVisual }; BondGeometry.GetWavyBondGeometry(sbd, modelXamlBondLength); return(sbd); } switch (parentOrderValue) { //indeterminate double case 2 when parentStereo == Globals.BondStereo.Indeterminate: DoubleBondLayout dbd = new DoubleBondLayout() { StartAtomVisual = startAtomVisual, EndAtomVisual = endAtomVisual, Start = startAtomPosition, End = endAtomPosition }; BondGeometry.GetCrossedDoubleGeometry(dbd, modelXamlBondLength); return(dbd); //partial or undefined bonds case 0: case 0.5: case 1.0: BondLayout sbd = new BondLayout { Start = startAtomPosition, End = endAtomPosition, StartAtomVisual = startAtomVisual, EndAtomVisual = endAtomVisual }; BondGeometry.GetSingleBondGeometry(sbd); return(sbd); //double bond & 1.5 bond case 1.5: case 2: DoubleBondLayout dbd2 = new DoubleBondLayout() { StartAtomVisual = startAtomVisual, EndAtomVisual = endAtomVisual, Start = startAtomPosition, End = endAtomPosition, Placement = parentPlacement, PrimaryCentroid = centroid, SecondaryCentroid = secondaryCentroid }; BondGeometry.GetDoubleBondGeometry(dbd2, modelXamlBondLength); return(dbd2); //triple and 2.5 bond case 2.5: case 3: TripleBondLayout tbd = new TripleBondLayout() { StartAtomVisual = startAtomVisual, EndAtomVisual = endAtomVisual, Start = startAtomPosition, End = endAtomPosition, Placement = parentPlacement, PrimaryCentroid = centroid, SecondaryCentroid = secondaryCentroid }; BondGeometry.GetTripleBondGeometry(tbd, modelXamlBondLength); return(tbd); default: return(null); } }
public static BondLayout GetBondDescriptor(AtomVisual startAtomVisual, AtomVisual endAtomVisual, double modelXamlBondLength, Globals.BondStereo parentStereo, Point startAtomPosition, Point endAtomPosition, double?parentOrderValue, Globals.BondDirection parentPlacement, Point?centroid, Point?secondaryCentroid, double standoff) { List <Point> startAtomHull = new List <Point>(); List <Point> endAtomHull = new List <Point>(); if (startAtomVisual.ParentAtom.SymbolText != "" || startAtomVisual.ShowAllCarbons) { startAtomHull = startAtomVisual.Hull; } if (endAtomVisual.ParentAtom.SymbolText != "" || endAtomVisual.ShowAllCarbons) { endAtomHull = endAtomVisual.Hull; } if ((parentStereo == Globals.BondStereo.Wedge || parentStereo == Globals.BondStereo.Hatch) && parentOrderValue == 1) { WedgeBondLayout wbd = new WedgeBondLayout { Start = startAtomPosition, End = endAtomPosition, StartAtomHull = startAtomHull, EndAtomHull = endAtomHull }; var endAtom = endAtomVisual.ParentAtom; var otherBonds = endAtom.Bonds.Except(new[] { startAtomVisual.ParentAtom.BondBetween(endAtom) }).ToList(); Bond bond = null; bool oblique = true; if (otherBonds.Any()) { bond = otherBonds.ToArray()[0]; Vector wedgevector = wbd.End - wbd.Start; foreach (Bond b in otherBonds) { Atom otherAtom = b.OtherAtom(endAtom); Vector v = wbd.End - otherAtom.Position; double angle = System.Math.Abs(Vector.AngleBetween(wedgevector, v)); if (angle < 109.5 || angle > 130.5) { oblique = false; break; } } } bool chamferBond = otherBonds.Any() && oblique && (endAtom.Element as Element) == Globals.PeriodicTable.C && endAtom.SymbolText == "" && bond.Order == Globals.OrderSingle; if (!chamferBond) { wbd.CappedOff = false; BondGeometry.GetWedgeBondGeometry(wbd, modelXamlBondLength, standoff); } else { var nonHPs = (from b in otherBonds select b.OtherAtom(endAtom).Position).ToList(); if (nonHPs.Any()) { wbd.CappedOff = true; BondGeometry.GetChamferedWedgeGeometry(wbd, modelXamlBondLength, nonHPs, standoff); } else { wbd.CappedOff = false; BondGeometry.GetWedgeBondGeometry(wbd, modelXamlBondLength, standoff); } } return(wbd); } //wavy bond if (parentStereo == Globals.BondStereo.Indeterminate && parentOrderValue == 1.0) { BondLayout sbd = new BondLayout { Start = startAtomPosition, End = endAtomPosition, StartAtomHull = startAtomHull, EndAtomHull = endAtomHull }; BondGeometry.GetWavyBondGeometry(sbd, modelXamlBondLength, standoff); return(sbd); } switch (parentOrderValue) { //indeterminate double case 2 when parentStereo == Globals.BondStereo.Indeterminate: DoubleBondLayout dbd = new DoubleBondLayout() { StartAtomHull = startAtomHull, EndAtomHull = endAtomHull, Start = startAtomPosition, End = endAtomPosition, StartNeigbourPositions = (from Atom a in startAtomVisual.ParentAtom.NeighboursExcept(endAtomVisual.ParentAtom) select a.Position).ToList(), EndNeighbourPositions = (from Atom a in endAtomVisual.ParentAtom.NeighboursExcept(startAtomVisual.ParentAtom) select a.Position).ToList() }; BondGeometry.GetCrossedDoubleGeometry(dbd, modelXamlBondLength, standoff); return(dbd); //partial or undefined bonds case 0: case 0.5: case 1.0: BondLayout sbd = new BondLayout { Start = startAtomPosition, End = endAtomPosition, StartAtomHull = startAtomHull, EndAtomHull = endAtomHull }; BondGeometry.GetSingleBondGeometry(sbd, standoff); return(sbd); //double bond & 1.5 bond case 1.5: case 2: DoubleBondLayout dbd2 = new DoubleBondLayout() { StartAtomHull = startAtomHull, EndAtomHull = endAtomHull, Start = startAtomPosition, End = endAtomPosition, Placement = parentPlacement, PrimaryCentroid = centroid, SecondaryCentroid = secondaryCentroid, StartNeigbourPositions = (from Atom a in startAtomVisual.ParentAtom.NeighboursExcept(endAtomVisual.ParentAtom) select a.Position).ToList(), EndNeighbourPositions = (from Atom a in endAtomVisual.ParentAtom.NeighboursExcept(startAtomVisual.ParentAtom) select a.Position).ToList() }; BondGeometry.GetDoubleBondGeometry(dbd2, modelXamlBondLength, standoff); return(dbd2); //triple and 2.5 bond case 2.5: case 3: TripleBondLayout tbd = new TripleBondLayout() { StartAtomHull = startAtomHull, EndAtomHull = endAtomHull, Start = startAtomPosition, End = endAtomPosition, Placement = parentPlacement, PrimaryCentroid = centroid, SecondaryCentroid = secondaryCentroid }; BondGeometry.GetTripleBondGeometry(tbd, modelXamlBondLength, standoff); return(tbd); default: return(null); } }