/// <summary>
/// Verifica se o poligono foi selecionado, se clicado dentro da bbox e poligono
/// </summary>
/// <param name="polygons"></param>
/// <param name="X"></param>
/// <param name="Y"></param>
/// <returns></returns>
public static Polygon GetSelected(List <Polygon> polygons, double X, double Y)
{
foreach (var polygon in polygons)
{
var bBox = polygon.GetBBox();
if (
X >= bBox.largerDistanceLeft &&
X <= bBox.largerDistanceRight &&
Y >= bBox.largetDistanceBottom &&
Y <= bBox.largerDistanceTop &&
WasClickedInside(polygon.GetTransformedPoints(), X, Y)
)
{
return(polygon);
}
var selectedChild = PolygonSelector.GetSelected(polygon.children, X, Y);
if (selectedChild != null)
{
return(selectedChild);
}
}
return(null);
}
/// <summary>
/// Verifica qual ação deve tomar com base no comando recebido
/// </summary>
/// <param name="command"></param>
/// <param name="mundo"></param>
/// <returns></returns>
public IState Perform(Command command, Mundo mundo)
{
if (command.Equals(Command.ESCAPE))
{
mundo.polygonSelected = null;
}
else if (command.Equals(Command.SELECT_POLYGON))
{
var selectedPolygon = PolygonSelector.GetSelected(mundo.polygons, Mouse.X, Mouse.Y);
if (selectedPolygon != null)
{
mundo.polygonSelected = selectedPolygon;
}
}
else if (command.Equals(Command.MOVE))
{
if (mundo.polygonSelected != null)
{
return(new TranslatePolygonState(mundo));
}
}
else if (command.Equals(Command.SCALE))
{
if (mundo.polygonSelected != null)
{
return(new ScalePolygonState());
}
}
else if (command.Equals(Command.ROTATE))
{
if (mundo.polygonSelected != null)
{
return(new RotatePolygonState(mundo));
}
}
else if (command.Equals(Command.CHILD))
{
if (mundo.polygonSelected != null)
{
return(new ChildState(mundo));
}
}
else if (command.Equals(Command.NEW_POINT))
{
return(new CreatingPolygonState(mundo));
}
else if (command.Equals(Command.SELECT_VERTEX))
{
if (mundo.polygonSelected != null)
{
return(new PointPolygonSelectedState().Perform(command, mundo));
}
}
else if (command.Equals(Command.DELETE))
{
return(new DeletingPolygonState().Perform(command, mundo));
}
else if (command.Equals(Command.CHANGE_PRIMITIVE))
{
return(new PrimitiveState().Perform(command, mundo));
}
else if (
command.Equals(Command.CHANGE_BLUE) ||
command.Equals(Command.CHANGE_COLOR_RED) ||
command.Equals(Command.CHANGE_GREEN)
)
{
return(new ColorState().Perform(command, mundo));
}
return(this);
}