public static IBlock Extrude(IPoly polygon, Vector3 direction, float floorDistance, float ceilingDistance, Func <IEnumerable <Vector3>, IPoly> polyConstructor = null, Func <IEnumerable <IPoly>, IBlock> blockConstructor = null)
{
if (polyConstructor == null)
{
polyConstructor = polygon.Clone;
}
IPoly floor = polygon.Clone(polygon.GetPoints().Select(x => x + direction * floorDistance));
IPoly ceiling = polygon.Clone(polygon.GetPoints().Select(x => x + direction * ceilingDistance));
List <IPoly> faces = new List <IPoly>();
for (int i = 0; i < polygon.Resolution; i++)
{
Vector3 lr = floor.GetPoint(i);
Vector3 ll = floor.GetPoint((i + 1) % polygon.Resolution);
Vector3 ul = ceiling.GetPoint((i + 1) % polygon.Resolution);
Vector3 ur = ceiling.GetPoint(i);
faces.Add(polyConstructor(new Vector3[] { lr, ll, ul, ur }));
}
faces.Add(polyConstructor(ceiling.GetPoints()));
faces.Add(polyConstructor(floor.GetPoints().Reverse()));
if (blockConstructor == null)
{
blockConstructor = (x) => new Block(x);
}
return(blockConstructor(faces));
}
/// <summary>
/// Make a concave polygon into a convex one
/// </summary>
/// <param name="poly"></param>
/// <returns></returns>
public static IEnumerable <IPoly> MakeConvex(IPoly poly)
{
List <Vector3> input = poly.GetPoints().ToList();
List <List <Vector3> > output = BayazitDecomposer.ConvexPartition(input);
return(output.Select(x => poly.Clone(x.ToArray())));
}
public Vector3[] GetPoints()
{
return(poly.GetPoints());
}
