/// <summary>
/// Creates Levels within the supplied Envelope, starting at Envelope.Elevation and proceeding upward at equal intervals until placing the last Level at Envelope.Elevation + Envelope.Height.
/// </summary>
/// <param name="envelope">Envelope that will encompass the new Levels.</param>
/// <param name="interval">Desired vertical distance between Levels.</param>
/// <returns>A List of Levels ordered from lowest Elevation to highest.</returns>
public void MakeLevels(Envelope envelope, double interval, bool first = true, bool last = true)
{
var perimeter = envelope.Profile.Perimeter;
if (perimeter.IsClockWise())
{
perimeter = perimeter.Reversed();
}
if (first)
{
Levels.Add(new Level(envelope.Elevation, Guid.NewGuid(), ""));
LevelPerimeters.Add(new LevelPerimeter(perimeter.Area(), envelope.Elevation, perimeter, Guid.NewGuid(), ""));
}
;
var openHeight = envelope.Height;
var stdHeight = Math.Abs(openHeight / Math.Floor(openHeight / interval));
var atHeight = envelope.Elevation + stdHeight;
while (openHeight >= stdHeight * 2)
{
Levels.Add(new Level(atHeight, Guid.NewGuid(), ""));
LevelPerimeters.Add(new LevelPerimeter(perimeter.Area(), atHeight, perimeter, Guid.NewGuid(), ""));
openHeight -= stdHeight;
atHeight += stdHeight;
}
if (last)
{
Levels.Add(new Level(envelope.Elevation + envelope.Height, Guid.NewGuid(), ""));
LevelPerimeters.Add(new LevelPerimeter(perimeter.Area(), envelope.Elevation + envelope.Height, perimeter, Guid.NewGuid(), ""));
}
}
/// <summary>
/// Creates a Level at the specified height if it falls within the vertical volume of the supplied Envelope.
/// </summary>
/// <param name="envelope">Envelope from which to derive the Level perimeter.</param>
/// <param name="elevation">Elevation of the proposed Level.</param>
/// <returns>A Level or null if no eligible envelope is found.</returns>
public bool MakeLevel(Envelope envelope, double elevation)
{
var perimeter = envelope.Profile.Perimeter;
if (perimeter.IsClockWise())
{
perimeter = perimeter.Reversed();
}
if (elevation < envelope.Elevation || elevation > envelope.Elevation + envelope.Height)
{
return(false);
}
Levels.Add(new Level(elevation, Guid.NewGuid(), ""));
LevelPerimeters.Add(new LevelPerimeter(perimeter.Area(), elevation, perimeter, Guid.NewGuid(), ""));
Levels = Levels.OrderBy(l => l.Elevation).ToList();
LevelPerimeters = LevelPerimeters.OrderBy(l => l.Elevation).ToList();
return(true);
}