public Triangle Other(Triangle t)
{
if (Triangles[0] == t)
return Triangles[1];
else if (Triangles[1] == t)
return Triangles[0];
throw new InvalidOperationException("Triangle does not belong to edge");
}
public Edge(Triangle onlyOne, Vector2I a, Vector2I b)
{
if(!(onlyOne.Points.Contains(a) && onlyOne.Points.Contains(b)))
throw new InvalidOperationException("Points do not belong to the triangle.");
Points[0] = a;
Points[1] = b;
Triangles[0] = null;
Triangles[1] = onlyOne;
}
public void Replace(Triangle oldTriangle, Triangle newTriangle)
{
for (int i = 0; i < 2; i++)
if (Triangles[i] == oldTriangle)
{
Triangles[i] = newTriangle;
if(Triangles[0]==Triangles[1])
throw new InvalidOperationException("An edge can not refer twice to the same triangle.");
return;
}
throw new InvalidOperationException("No matching triangle.");
}
public Edge(Triangle a, Triangle b)
{
Triangles[0] = a;
Triangles[1] = b;
int cursor = 0;
foreach (Vector2I point in a.Points)
{
foreach (Vector2I point2 in b.Points)
{
if (point == point2)
{
if(cursor>=2)
throw new InvalidOperationException("Too much common point between the two triangles used to construct the edge");
Points[cursor] = point;
cursor++;
}
}
}
if (cursor != 2)
throw new InvalidOperationException("Too few common point between the two triangles used to construct the edge");
}
