public Vertex2D IncludeVertex(Edge2D e)
{
if (e.HasVertex(a))
{
return(a);
}
else
{
return(b);
}
}
/// <summary>
/// 辺と対応する面の接続関係を追加する
/// </summary>
/// <returns>The add.</returns>
/// <param name="face">Face.</param>
/// <param name="edge">Edge.</param>
void Add(Face2D face, Edge2D edge)
{
if (!_connection.ContainsKey(edge))
{
_connection.Add(edge, new List <Face2D>()
{
face
});
}
else
{
_connection[edge].Add(face);
}
}
/// <summary>
/// 入力した面から入力した辺を介する隣接する面を取得する。
/// </summary>
/// <returns><c>true</c>, if get neighbor was tryed, <c>false</c> otherwise.</returns>
/// <param name="edge">Edge.</param>
/// <param name="face">Face.</param>
/// <param name="neighbor">Neighbor.</param>
public bool TryGetNeighbor(Edge2D edge, Face2D face, out Face2D neighbor)
{
List <Face2D> faces;
if (_connection.TryGetValue(edge, out faces))
{
neighbor = faces.Find(f => f != face);
return(neighbor != null);
}
else
{
neighbor = null;
return(false);
}
}
/// <summary>
/// 入力した辺に含まれない頂点を返す
/// </summary>
/// <returns>The vertex.</returns>
/// <param name="e">E.</param>
public Vertex2D ExcludeVertex(Edge2D e)
{
if (!e.HasVertex(a))
{
return(a);
}
else if (!e.HasVertex(b))
{
return(b);
}
else
{
return(c);
}
}
/// <summary>
/// 面情報を作成する。
/// </summary>
/// <returns>The face.</returns>
/// <param name="t">T.</param>
/// <param name="contour">Contour.</param>
/// <param name="vSet">V set.</param>
Face2D MakeFace(Triangle2D t, List <Vector2> contour, VerticesSet2D vSet)
{
var a = vSet.FindNear(t.p0);
var b = vSet.FindNear(t.p1);
var c = vSet.FindNear(t.p2);
var g = vSet.CheckAndAdd((a.p + b.p + c.p) / 3f);
g.isExterior = false;
var face = new Face2D(a, b, c, g);
int externalCount = 0;
bool isExterior = false;
for (int i = 0, j = 2; i < 3; j = i++)
{
isExterior = IsContourEdge(contour, face.vertices[i].p, face.vertices[j].p);
externalCount += isExterior ? 1 : 0;
var mid = vSet.CheckAndAdd((face.vertices[j].p + face.vertices[i].p) * 0.5f);
mid.isExterior = false;
var edge = new Edge2D(face.vertices[j], face.vertices[i], mid, isExterior);
face.edges[j] = edge;
}
switch (externalCount)
{
case 0:
face.category = Face2D.Category.Junction;
break;
case 1:
face.category = Face2D.Category.Sleeve;
break;
case 2:
face.category = Face2D.Category.Terminal;
break;
default:
throw new System.Exception("輪郭情報とマッチしません。");
}
return(face);
}
/// <summary>
/// 指定した内部辺以外の他の内部辺を取得する
/// </summary>
/// <returns><c>true</c>, if get othe interior edge was tryed, <c>false</c> otherwise.</returns>
/// <param name="interiorEdge">Interior edge.</param>
/// <param name="others">Others.</param>
public bool TryGetOtheInteriorEdge(Edge2D interiorEdge, out Edge2D[] others)
{
if (category != Category.Terminal)
{
others = new Edge2D[(int)category];
var count = 0;
for (var i = 0; i < edges.Length; ++i)
{
if (!edges[i].isExterior && !edges[i].Equals(interiorEdge))
{
others[count++] = edges[i];
}
}
return(count == others.Length);
}
else
{
others = null;
return(false);
}
}
