public AddPointAfterAction(Surface surface, Vertex vertex, double x, double y)
{
Surface = surface;
Vertex = vertex;
X = x;
Y = y;
}
private Surface(
Vertex position,
IReadOnlyCollection<Vertex> points,
bool isSelected,
string name)
{
Points = ImmutableList.CreateRange(points);
Position = position;
IsSelected = isSelected;
Name = name;
}
public MovePointsAction(Surface surface, Vertex vertex, Vector delta)
{
Surface = surface;
Points = new [] { vertex };
Delta = delta;
}
public Surface RemovePoint(Vertex vertex)
{
return Create(Position, Points.Remove(vertex), IsSelected, Name);
}
public Surface AddPoint(Vertex vertex, Vertex previous)
{
return Create(Position, Points.Insert(Points.IndexOf(previous) + 1, vertex), IsSelected, Name);
}
public Surface MovePoint(Vertex vertex, Vector delta)
{
return Create(Position, Points.Replace(vertex, vertex.Move(delta)), IsSelected, Name);
}
public Scene RemovePoint(Surface surface, Vertex vertex)
{
return Create(Surfaces.Replace(surface, surface.RemovePoint(vertex)));
}
public Scene AddPoint(Surface surface, Vertex vertex, Vertex previous)
{
return Create(Surfaces.Replace(surface, surface.AddPoint(vertex, previous)));
}
public Scene MovePoint(Surface surface, Vertex vertex, Vector delta)
{
return Create(Surfaces.Replace(surface, surface.MovePoint(vertex, delta)));
}
public Line(Vertex a, Vertex b)
{
A = a;
B = b;
}
public static Surface Create(
Vertex position,
IReadOnlyCollection<Vertex> points,
bool isSelected,
string name)
{
if (points.Count < 3)
{
throw new InvalidOperationException(nameof(points.Count) + " should be more than 3");
}
return new Surface(position, points, isSelected, name);
}
public RemovePointAction(Surface surface, Vertex vertex)
{
Surface = surface;
Vertex = vertex;
}
public AddSurfaceAction(Vertex position, IReadOnlyCollection<Vertex> points, string name)
{
Position = position;
Points = points;
Name = name;
}