DiracBelt
vmm3d.surface.parametric

Class DiracBelt

  • All Implemented Interfaces:
    EventListener, ChangeListener, Decorateable, Parameterizable


    public class DiracBeltextends SurfaceParametric
    Defines a Dirac Belt (for the Belt-Trick) with parametric equations ((1/2)*(v - 8*u*cos(t)*(1 + 2*cos(t)^2*cos(v))*sin(t)*sin(v/2)^2 + cos(4*t)*(v - sin(v)) + sin(v)) -2.5, -cos(v)*sin(2*t) + u*cos(t)^2*sin(2*v);, u*(-cos(2*t)*sin(t)^2 + cos(t)^2*(cos(2*t)*cos(2*v) + 4*cos(v)*sin(t)^2)) + (1/2)*sin(4*t)*(-v + sin(v))))
    • Constructor Detail

      • DiracBelt

        public DiracBelt()
    • Method Detail

      • getDefaultView

        public View getDefaultView()
        Description copied from class: Surface
        Returns a default view of this exhibit, a View of type SurfaceView. (Note: If a Surface is displayed in a plain View3D, it will always appear as a wireframe.)
        Overrides:
        getDefaultView in class Surface
      • getCreateAnimation

        public Animation getCreateAnimation(View view)
        Description copied from class: Exhibit
        This method is called to "create" the Exhibit. It should return an animation that will show the process of creating the Exhibit, whatever that means. The animation is run when the Exhibit is first shown on the screen (in the 3dxm shell program) and when the "Create" action command is invoked. If the return value is null, then there is no creation animation for this exhibit. If the return value is non-null, then it can be expected that the animation will be installed in the View's Display.
        Overrides:
        getCreateAnimation in class Exhibit
        Parameters:
        view - A View that is displaying this Exhibit. The animation, if any, that is returned by this method will be installed in the View's display. If the view is null, than a creation animation that can run independently of a view could be returned.
        Returns:
        A creation animation for the given View of this Exhibit. The return value can be null to indicate that no creation animation is to be run.
      • surfacePoint

        public Vector3D surfacePoint(double u,                    double v)
        Description copied from class: SurfaceParametric
        The parametric equations that define the surface, given as a function from the uv-plane into R3. The return value of this function can be null, indicating that the function is undefined for the given u and v.
        Specified by:
        surfacePoint in class SurfaceParametric

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