private void CreateModel()
{
var points = new Point3DCollection();
var edges = new Int32Collection();
var triangles = new Int32Collection();
switch (CurrentModelType)
{
case ModelTypes.StellatedOctahedron:
case ModelTypes.Tetrahedron:
points.Add(+1, +1, +1);
points.Add(-1, -1, 1);
points.Add(-1, +1, -1);
points.Add(+1, -1, -1);
edges.Add(0, 1, 1, 2, 2, 0, 0, 3, 1, 3, 2, 3);
triangles.Add(0, 1, 2, 0, 3, 1, 1, 3, 2, 2, 3, 0);
break;
}
switch (CurrentModelType)
{
case ModelTypes.StellatedOctahedron:
// http://en.wikipedia.org/wiki/Compound_of_two_tetrahedra
points.Add(-1, +1, +1);
points.Add(1, -1, 1);
points.Add(1, +1, -1);
points.Add(-1, -1, -1);
edges.Add(4, 5, 5, 6, 6, 4, 4, 7, 5, 7, 6, 7);
triangles.Add(4, 5, 6, 4, 7, 5, 5, 7, 6, 6, 7, 4);
break;
}
var m = new Model3DGroup();
// Add the nodes
var gm = new MeshBuilder();
foreach (var p in points)
{
gm.AddSphere(p, 0.1);
}
m.Children.Add(new GeometryModel3D(gm.ToMesh(), Materials.Gold));
// Add the triangles
var tm = new MeshBuilder();
for (int i = 0; i < triangles.Count; i += 3)
{
tm.AddTriangle(points[triangles[i]], points[triangles[i + 1]], points[triangles[i + 2]]);
}
m.Children.Add(new GeometryModel3D(tm.ToMesh(), Materials.Red) { BackMaterial = Materials.Blue });
// Add the edges
var em = new MeshBuilder();
for (int i = 0; i < edges.Count; i += 2)
{
em.AddCylinder(points[edges[i]], points[edges[i + 1]], 0.08, 10);
}
m.Children.Add(new GeometryModel3D(em.ToMesh(), Materials.Gray));
Model = m;
}
