//mxd
private static void MergeLines(ICollection <Vertex> selected, Linedef ld1, Linedef ld2, Vertex v)
{
Vertex v1 = (ld1.Start == v) ? ld1.End : ld1.Start;
Vertex v2 = (ld2.Start == v) ? ld2.End : ld2.Start;
if (ld1.Start == v)
{
ld1.SetStartVertex(v2);
}
else
{
ld1.SetEndVertex(v2);
}
ld2.Dispose();
bool redraw = true;
if (!v2.IsDisposed && selected.Contains(v2) && v2.Linedefs.Count == 2)
{
Linedef[] lines = new Linedef[2];
v2.Linedefs.CopyTo(lines, 0);
Linedef other = lines[0] == ld2 ? lines[1] :lines[0];
MergeLines(selected, ld1, other, v2);
v2.Dispose();
redraw = false;
}
if (!v1.IsDisposed && selected.Contains(v1) && v1.Linedefs.Count == 2)
{
Linedef[] lines = new Linedef[2];
v1.Linedefs.CopyTo(lines, 0);
Linedef other = lines[0] == ld1 ? lines[1] : lines[0];
MergeLines(selected, other, ld1, v1);
v1.Dispose();
redraw = false;
}
if (redraw && ld1.Start != null && ld1.End != null)
{
Vector2D start = ld1.Start.Position;
Vector2D end = ld1.End.Position;
ld1.Dispose();
DrawLine(start, end);
}
else
{
ld1.Dispose();
}
}
public void Dispose()
{
// Not already removed automatically?
if (!vertex.IsDisposed)
{
// If the vertex only has 2 linedefs attached, then merge the linedefs
if (vertex.Linedefs.Count == 2)
{
Linedef ld1 = General.GetByIndex(vertex.Linedefs, 0);
Linedef ld2 = General.GetByIndex(vertex.Linedefs, 1);
Vertex v1 = (ld1.Start == vertex) ? ld1.End : ld1.Start;
Vertex v2 = (ld2.Start == vertex) ? ld2.End : ld2.Start;
if (ld1.Start == vertex)
{
ld1.SetStartVertex(v2);
}
else
{
ld1.SetEndVertex(v2);
}
ld2.Dispose();
}
// Trash vertex
vertex.Dispose();
}
}
public void DeleteItem()
{
// Make list of selected vertices
ICollection <Vertex> selected = General.Map.Map.GetSelectedVertices(true);
if ((selected.Count == 0) && (highlighted != null) && !highlighted.IsDisposed)
{
selected.Add(highlighted);
}
// Anything to do?
if (selected.Count > 0)
{
// Make undo
if (selected.Count > 1)
{
General.Map.UndoRedo.CreateUndo("Delete " + selected.Count + " vertices");
General.Interface.DisplayStatus(StatusType.Action, "Deleted " + selected.Count + " vertices.");
}
else
{
General.Map.UndoRedo.CreateUndo("Delete vertex");
General.Interface.DisplayStatus(StatusType.Action, "Deleted a vertex.");
}
// Go for all vertices that need to be removed
foreach (Vertex v in selected)
{
// Not already removed automatically?
if (!v.IsDisposed)
{
// If the vertex only has 2 linedefs attached, then merge the linedefs
if (v.Linedefs.Count == 2)
{
Linedef ld1 = General.GetByIndex(v.Linedefs, 0);
Linedef ld2 = General.GetByIndex(v.Linedefs, 1);
Vertex v1 = (ld1.Start == v) ? ld1.End : ld1.Start;
Vertex v2 = (ld2.Start == v) ? ld2.End : ld2.Start;
if (ld1.Start == v)
{
ld1.SetStartVertex(v2);
}
else
{
ld1.SetEndVertex(v2);
}
//if(ld2.Start == v) ld2.SetStartVertex(v1); else ld2.SetEndVertex(v1);
//ld1.Join(ld2);
ld2.Dispose();
}
// Trash vertex
v.Dispose();
}
}
// Update cache values
General.Map.IsChanged = true;
General.Map.Map.Update();
// Invoke a new mousemove so that the highlighted item updates
MouseEventArgs e = new MouseEventArgs(MouseButtons.None, 0, (int)mousepos.x, (int)mousepos.y, 0);
OnMouseMove(e);
// Redraw screen
General.Interface.RedrawDisplay();
}
}