public Output Execute(Input input)
{
// Extract location data.
// The GeoJSON may contain a number of features. Here we just
// take the first one assuming it's a Polygon, and we use
// its first point as the origin.
var outline = (Hypar.GeoJSON.Polygon)input.Location[0].Geometry;
var origin = outline.Coordinates[0][0];
var offset = origin.ToVectorMeters();
var plines = outline.ToPolygons();
var pline = plines[0];
var boundary = new Hypar.Geometry.Polygon(pline.Vertices.Select(v => new Vector3(v.X - offset.X, v.Y - offset.Y, v.Z)).ToList());
var mass = new Mass(boundary, 0, input.Height);
// Add your mass element to a new Model.
var model = new Model();
model.AddElement(mass);
// Set the origin of the model to convey to Hypar
// where to position the generated 3D model.
model.Origin = origin;
var output = new Output(model, mass.Profile.Perimeter.Area);
return(output);
}
/// <summary>
/// Convert the coordinate array to a collection of polylines.
/// The last position of the polygon is dropped.
/// </summary>
/// <returns></returns>
public Hypar.Geometry.Polygon[] ToPolygons()
{
var plineArr = new Hypar.Geometry.Polygon[Coordinates.Length];
for (var i = 0; i < plineArr.Length; i++)
{
var coords = this.Coordinates[i];
var verts = new Vector3[coords.Length - 1];
// Drop the last position.
for (var j = 0; j < coords.Length - 1; j++)
{
verts[j] = coords[j].ToVectorMeters();
}
var pline = new Hypar.Geometry.Polygon(verts);
plineArr[i] = pline;
}
return(plineArr);
}
/// <summary>
/// Construct a Profile.
/// </summary>
/// <param name="name">The name of the Profile.</param>
/// <param name="perimeter">The perimeter of the Profile</param>
public Profile(Polygon perimeter, string name = null)
{
this.Id = Guid.NewGuid().ToString();
this.Perimeter = perimeter;
this.Name = name;
}
