internal static double AreaQuality(Triangle2D triangle)
{
double Area = triangle.A.X * triangle.B.Y + triangle.B.X * triangle.C.Y + triangle.C.X * triangle.A.Y - triangle.A.Y * triangle.B.X - triangle.B.Y * triangle.C.X - triangle.C.Y * triangle.A.X;
Area /= 2;
return 1 / Math.Abs(Area);
}
public void Union(Triangle2DCollection triangle2DCollection)
{
Capacity += triangle2DCollection.Capacity;
Triangle2D[] triangles = new Triangle2D[Capacity];
this.Triangles.CopyTo(triangles, 0);
triangle2DCollection.Triangles.CopyTo(triangles, this.Count);
this.Triangles = triangles;
CurrentCount += triangle2DCollection.Count;
}
internal static double ShapeQuality(Triangle2D triangle)
{
//double angle = TriangleQuality(triangle);
//double Area = triangle.A.X * triangle.B.Y + triangle.B.X * triangle.C.Y + triangle.C.X * triangle.A.Y - triangle.A.Y * triangle.B.X - triangle.B.Y * triangle.C.X - triangle.C.Y * triangle.A.X;
//Area /= 2;
//return Math.Exp(2*(angle - Math.PI / 3)) / Math.Abs(Area);
double val = 0.05 / Math.Max(triangle.AB.Length, Math.Max(triangle.AC.Length, triangle.BC.Length));
return val;
}
public Triangle2DCollection(Triangle2D[] triangles, int capacity)
{
Capacity = capacity;
CurrentCount = triangles.Length;
if (Capacity < CurrentCount)
{
throw (new CollectionCapacityException());
}
Triangles = triangles;
}
public static Position GetPosition(Triangle2D a, Triangle2D b)
{
int ret = 0;
if (a.A == b.A || a.A == b.B || a.A == b.C)
{
ret++;
}
if (a.B == b.A || a.B == b.B || a.B == b.C)
{
ret++;
}
if (a.C == b.A || a.C == b.B || a.C == b.C)
{
ret++;
}
return (Position)ret;
}
public void Add(Triangle2D triangle)
{
try
{
base.Add();
}
catch (CollectionCapacityException e)
{
string emsg = e.Message;
this.Capacity *= 2;
Triangle2D[] triangles = new Triangle2D[Capacity];
this.Triangles.CopyTo(triangles, 0);
this.Triangles = triangles;
base.Add();
}
Triangles[CurrentCount - 1] = triangle;
}
public static double TriangleQuality(Triangle2D triangle)
{
return Math.Min(triangle.a, Math.Min(triangle.b, triangle.c));
}
private void Triangulation(int a, int b, int c)
{
Debug.Assert(a != b && b != c && c != a);
Triangle2D triangle = new Triangle2D(this.polygon.GetPoint(a), this.polygon.GetPoint(b), this.polygon.GetPoint(c));
GhostTriangle2D ghost = new GhostTriangle2D(a, b, c);
this.triangles.Add(triangle);
this.ghostTriangles.Add(ghost);
if (lineSegments.Count < polygon.VertexCount - 3)
{
Vector2D internalSegment = new Vector2D(a, c);
LineSegment2D lineSegment = new LineSegment2D(this.polygon.GetPoint(a), this.polygon.GetPoint(c));
this.lineSegments.Add(lineSegment);
this.internalSegments.Add(internalSegment);
}
}
public void Add(Triangle2D triangle)
{
try
{
base.Add();
}
catch (CollectionCapacityException e)
{
string emsg = e.Message;
this.Capacity *= 2;
Triangle2D[] triangles = new Triangle2D[Capacity];
this.Triangles.CopyTo(triangles, 0);
this.Triangles = triangles;
base.Add();
}
Triangles[CurrentCount - 1] = triangle;
}
public Triangle2DCollection(Triangle2D[] triangles)
{
Capacity = triangles.Length;
Triangles = triangles;
CurrentCount = Capacity;
}
public void Union(Triangle2DCollection triangle2DCollection)
{
Capacity += triangle2DCollection.Capacity;
Triangle2D[] triangles = new Triangle2D[Capacity];
this.Triangles.CopyTo(triangles, 0);
triangle2DCollection.Triangles.CopyTo(triangles, this.Count);
this.Triangles = triangles;
CurrentCount += triangle2DCollection.Count;
}
