Example #1
0
            public Graph FromStructure(Structure.Molecule molecule)
            {
                Structure.Node pivot = molecule.Nodes.First();
                if (pivot == null)
                {
                    return(this);
                }
                Node n = new Node(pivot.Type, new Point(0, 0));

                Nodes.Add(n);
                visited.Add(pivot, n);
                DrawGraph(molecule, null, null, n, pivot);
                return(this);
            }
Example #2
0
            void DrawGraph(Structure.Molecule molecule, Bond lastBond, Structure.Bond lastInfo, Node baseNode, Structure.Node info)
            {
                List <Structure.Bond> connections = molecule.GetOther(info);

                if (connections.Count == 0)
                {
                    return;
                }
                if (connections.Count > Structure.GetBondCount(info.Type))
                {
                    return;
                }

                List <int> availableDirs = new int[] { 1, 3, 4, 2 }.ToList();

                if (lastBond != null)
                {
                    availableDirs.Remove(PointToNum(lastBond.GetOther(baseNode).Location.X - baseNode.Location.X, lastBond.GetOther(baseNode).Location.Y - baseNode.Location.Y));
                    if (connections.Contains(lastInfo))
                    {
                        connections.Remove(lastInfo);
                    }
                }

                if (!randomStruct)
                {
                    List <Structure.Bond> horizontals = connections.Where(p => p.Orientation == Structure.Orientation.Horizontal).ToList();
                    int horizontalCnt = (availableDirs.Contains(1) ? 1 : 0) + (availableDirs.Contains(3) ? 1 : 0);
                    if (horizontals.Count > horizontalCnt)
                    {
                        horizontals = horizontals.Take(horizontalCnt).ToList();
                    }
                    connections = connections.Except(horizontals).ToList();
                    int dir = 1;
                    foreach (Structure.Bond bd in horizontals)
                    {
                        if (!availableDirs.Contains(PointToNum(dir, 0)))
                        {
                            dir *= -1;
                        }
                        Node tmpNd;
                        if (visited.Keys.Contains(bd.GetOther(info)))
                        {
                            tmpNd = visited[bd.GetOther(info)];
                        }
                        else
                        {
                            tmpNd = new Node(bd.GetOther(info).Type, new PointF(baseNode.Location.X + dir, baseNode.Location.Y));
                            Nodes.Add(tmpNd);
                        }
                        availableDirs.Remove(PointToNum(dir, 0));
                        dir *= -1;
                        Bond tmpbd = new Bond(baseNode, tmpNd, bd.Type);
                        Bonds.Add(tmpbd);
                        if (!visited.Keys.Contains(bd.GetOther(info)))
                        {
                            DrawGraph(molecule, tmpbd, bd, tmpNd, bd.GetOther(info));
                            visited.Add(bd.GetOther(info), tmpNd);
                        }
                    }

                    List <Structure.Bond> verticals = connections.Where(p => p.Orientation == Structure.Orientation.Vertical).ToList();
                    int verticalCnt = (availableDirs.Contains(2) ? 1 : 0) + (availableDirs.Contains(4) ? 1 : 0);
                    if (verticals.Count > verticalCnt)
                    {
                        verticals = verticals.Take(verticalCnt).ToList();
                    }
                    connections = connections.Except(verticals).ToList();
                    dir         = -1;
                    foreach (Structure.Bond bd in verticals)
                    {
                        if (!availableDirs.Contains(PointToNum(0, dir)))
                        {
                            dir *= -1;
                        }
                        Node tmpNd;
                        if (visited.Keys.Contains(bd.GetOther(info)))
                        {
                            tmpNd = visited[bd.GetOther(info)];
                        }
                        else
                        {
                            tmpNd = new Node(bd.GetOther(info).Type, new PointF(baseNode.Location.X, baseNode.Location.Y + dir));
                            Nodes.Add(tmpNd);
                        }
                        availableDirs.Remove(PointToNum(0, dir));
                        dir *= -1;
                        Bond tmpbd = new Bond(baseNode, tmpNd, bd.Type);
                        Bonds.Add(tmpbd);
                        if (!visited.Keys.Contains(bd.GetOther(info)))
                        {
                            DrawGraph(molecule, tmpbd, bd, tmpNd, bd.GetOther(info));
                            visited.Add(bd.GetOther(info), tmpNd);
                        }
                    }
                }
                else
                {
                    connections.Shuffle();
                }

                foreach (Structure.Bond bd in connections)
                {
                    PointF offset = NumToPoint(availableDirs[0]);
                    Node   tmpNd;
                    if (visited.Keys.Contains(bd.GetOther(info)))
                    {
                        tmpNd = visited[bd.GetOther(info)];
                    }
                    else
                    {
                        tmpNd = new Node(bd.GetOther(info).Type, new PointF(baseNode.Location.X + offset.X, baseNode.Location.Y + offset.Y));
                        Nodes.Add(tmpNd);
                    }
                    Bond tmpbd = new Bond(baseNode, tmpNd, bd.Type);
                    Bonds.Add(tmpbd);
                    if (!visited.Keys.Contains(bd.GetOther(info)))
                    {
                        DrawGraph(molecule, tmpbd, bd, tmpNd, bd.GetOther(info));
                        visited.Add(bd.GetOther(info), tmpNd);
                    }
                    availableDirs.RemoveAt(0);
                }
            }