public void ChangeVertices(int n)
{
baseVertices = n;
if (_vertices.Count > 6)
{
_vertices.RemoveRange(6, _vertices.Count - 6);
}
if (_edges.Count > 9)
{
_edges.RemoveRange(9, _edges.Count - 9);
}
if (Faces.Count > 5)
{
Faces.RemoveRange(5, Faces.Count - 5);
}
if (n == 0)
{
InitializeBasicObject();
return;
}
var newv = new List <Vertex>();
var newe = new List <Edge>();
var newf = new List <Face>();
for (var i = 0; i < n; i++)
{
newf.Add(new Face());
}
for (var i = 0; i < n * 2; i++)
{
newv.Add(new Vertex {
X = 50, Y = i % 2 == 0 ? -25 : 25
});
}
for (var i = 0; i < n * 3; i++)
{
var e = new Edge {
Left = newf[i / 3]
};
switch (i % 3)
{
case 0:
e.Left = Faces[0];
e.Init = newv[i / 3 * 2];
e.End = i == 0 ? _vertices[0] : newv[(i - 1) / 3 * 2];
e.Right = newf[i / 3];
e.Right.Edge = e;
break;
case 1:
e.Right = i == n * 3 - 2 ? Faces[3] : newf[i / 3 + 1];
e.Init = newv[i / 3 * 2];
e.End = newv[i / 3 * 2 + 1];
break;
case 2:
e.Right = Faces[4];
e.End = i == 2 ? _vertices[3] : newv[(i - 3) / 3 * 2 + 1];
e.Init = newv[i / 3 * 2 + 1];
break;
}
e.Init.Edge = e;
e.End.Edge = e;
newe.Add(e);
}
for (var i = 0; i < n * 3; i++)
{
switch (i % 3)
{
case 0:
if (i == 0)
{
newe[i].UpperRight = _edges[3];
newe[i].UpperLeft = _edges[0];
_edges[0].LowerLeft = newe[i];
_edges[3].LowerRight = newe[i];
}
else
{
newe[i].UpperRight = newe[i - 2];
newe[i].UpperLeft = newe[i - 3];
}
if (i == (n - 1) * 3)
{
newe[i].LowerLeft = _edges[2];
_edges[2].UpperLeft = newe[i];
}
else
{
newe[i].LowerLeft = newe[i + 3];
}
newe[i].LowerRight = newe[i + 1];
break;
case 1:
newe[i].UpperLeft = newe[i + 1];
newe[i].LowerLeft = newe[i - 1];
if (i == n * 3 - 2)
{
newe[i].LowerRight = _edges[2];
newe[i].UpperRight = _edges[8];
_edges[2].UpperRight = newe[i];
_edges[8].UpperLeft = newe[i];
}
else
{
newe[i].LowerRight = newe[i + 2];
newe[i].UpperRight = newe[i + 4];
}
break;
case 2:
if (i == 2)
{
newe[i].UpperLeft = _edges[3];
newe[i].UpperRight = _edges[6];
_edges[3].UpperRight = newe[i];
_edges[6].LowerRight = newe[i];
}
else
{
newe[i].UpperLeft = newe[i - 4];
newe[i].UpperRight = newe[i - 3];
}
newe[i].LowerLeft = newe[i - 1];
newe[i].LowerRight = i == n * 3 - 1 ? _edges[8] : newe[i + 3];
break;
}
}
_edges[8].UpperRight = newe[n * 3 - 1];
_edges[8].End = newv[n * 2 - 1];
_edges[2].End = newv[(n - 1) * 2];
_edges[3].Right = n == 0 ? Faces[3] : newf[0];
var angle = 360.0 / (n + 3);
var total = n * 2 - 2;
for (var i = 0; i < newv.Count; i += 2)
{
var m = Matrix.YRotationMatrix(-angle * ((total - i) / 2 + 3));
var p1 = m * (Point)newv[i];
newv[i].X = p1.X;
newv[i + 1].X = p1.X;
newv[i].Z = p1.Z;
newv[i + 1].Z = p1.Z;
}
_vertices[1].X = _vertices[4].X = _vertices[2].X = _vertices[5].X = _vertices[0].X;
_vertices[1].Z = _vertices[4].Z = _vertices[2].Z = _vertices[5].Z = _vertices[0].Z;
for (var i = 1; i < 3; i++)
{
var m = Matrix.YRotationMatrix(-angle * i);
var p1 = m * (Point)_vertices[i];
_vertices[i].X = p1.X;
_vertices[i + 3].X = p1.X;
_vertices[i].Z = p1.Z;
_vertices[i + 3].Z = p1.Z;
}
_vertices.AddRange(newv);
_edges.AddRange(newe);
Faces.AddRange(newf);
}