// Define the model.
private void DefineModel(Model3DGroup group)
{
// Show the axes.
MeshExtensions.AddAxes(group);
MeshGeometry3D mesh1 = new MeshGeometry3D();
double dx = 3 / Math.Sqrt(3);
mesh1.AddBox(new Point3D(-dx, -dx, -dx),
D3.XVector(2 * dx), D3.YVector(2 * dx), D3.ZVector(2 * dx));
group.Children.Add(mesh1.MakeModel(new SolidColorBrush(Colors.LightBlue)));
const int numTheta = 60;
const int numPhi = 30;
MeshGeometry3D mesh2 = new MeshGeometry3D();
Point3D center = new Point3D(0, 0, 0);
mesh2.AddSphere(center, 3, numTheta, numPhi, true);
MaterialGroup material = new MaterialGroup();
Color color = Color.FromArgb(64, 128, 128, 128);
material.Children.Add(new DiffuseMaterial(new SolidColorBrush(color)));
material.Children.Add(new SpecularMaterial(Brushes.White, 100));
group.Children.Add(mesh2.MakeModel(material));
}
public static void AddZAxis(Model3DGroup group,
double length = 4, double thickness = 0.1)
{
MeshGeometry3D mesh = new MeshGeometry3D();
Point3D origin = D3.Origin -
D3.XVector(thickness / 2) -
D3.YVector(thickness / 2) -
D3.ZVector(thickness / 2);
mesh.AddBox(origin,
D3.XVector(thickness), D3.YVector(thickness), D3.ZVector(length));
group.Children.Add(mesh.MakeModel(Brushes.Blue));
}
// Make a cube at the origin.
public static void AddOrigin(Model3DGroup group,
double cubeThickness = 0.102)
{
MeshGeometry3D mesh = new MeshGeometry3D();
Point3D origin = D3.Origin -
D3.XVector(cubeThickness / 2) -
D3.YVector(cubeThickness / 2) -
D3.ZVector(cubeThickness / 2);
mesh.AddBox(origin,
D3.XVector(cubeThickness),
D3.YVector(cubeThickness),
D3.ZVector(cubeThickness));
group.Children.Add(mesh.MakeModel(Brushes.Black));
}