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));
}
// Define the model.
private void DefineModel(Model3DGroup group)
{
const int numTheta = 30;
const int numPhi = 60;
// Make a smooth torus.
MeshGeometry3D mesh1 = new MeshGeometry3D();
Point3D center = new Point3D(1, 0, 1);
mesh1.AddTorus(center, 1, 0.5, numTheta, numPhi, true);
mesh1.ApplyTransformation(new TranslateTransform3D(0, -1, -1));
group.Children.Add(mesh1.MakeModel(Brushes.Pink));
// Make a smooth torus.
MeshGeometry3D mesh2 = new MeshGeometry3D();
center = new Point3D(0, 0.6, 2.5);
mesh2.AddTorus(center, 1, 0.5, numTheta, numPhi, true);
mesh2.ApplyTransformation(D3.Rotate(D3.ZVector(), center, 40));
mesh2.ApplyTransformation(D3.Rotate(D3.YVector(), center, 90));
mesh2.ApplyTransformation(new TranslateTransform3D(0, -1, -1));
group.Children.Add(mesh2.MakeModel(Brushes.LightGreen));
// Make a smooth torus.
MeshGeometry3D mesh3 = new MeshGeometry3D();
center = new Point3D(-0.75, 1, -0.75);
mesh3.AddTorus(center, 1.1, 0.55, numTheta, numPhi, true);
mesh3.ApplyTransformation(D3.Rotate(D3.XVector(), center, 90));
mesh3.ApplyTransformation(D3.Rotate(D3.YVector(), center, 45));
mesh3.ApplyTransformation(new TranslateTransform3D(0, -1, 0));
group.Children.Add(mesh3.MakeModel(Brushes.LightBlue));
// Show the axes.
MeshExtensions.AddAxes(group);
}
