### Navigation

- index
- next |
- previous |
- Mayavi v3.3.0 documentation »
- Example gallery »

# Boy example

A script to generate the Mayavi logo: a Boy surface.

The boy surface is a mathematical parametric surface, see http://en.wikipedia.org/wiki/Boy%27s_surface . We display it by sampling the two parameters of the surface on a grid and using the mlab’s mesh function: `enthought.mayavi.mlab.mesh()`.

Source code: boy.py

    # Author: Gael Varoquaux <gael.varoquaux@normalesup.org>
    # Copyright (c) 2007, Enthought, Inc.
    # License: BSD Style.

    from numpy import sin, cos, mgrid, pi, sqrt
    from enthought.mayavi import mlab

    mlab.figure(fgcolor=(0, 0, 0), bgcolor=(1, 1, 1))
    u, v = mgrid[-0.035:pi:0.01, -0.035:pi:0.01]

    X = 2/3.* (cos(u)* cos(2*v)
            + sqrt(2)* sin(u)* cos(v))* cos(u) / (sqrt(2) - sin(2*u)* sin(3*v))
    Y = 2/3.* (cos(u)* sin(2*v) - sqrt(2)* sin(u)* sin(v))* cos(u) / (sqrt(2)
            - sin(2*u)* sin(3*v))
    Z = -sqrt(2)* cos(u)* cos(u) / (sqrt(2) - sin(2*u)* sin(3*v))
    S = sin(u)

    mlab.mesh(X, Y, Z, scalars=S, colormap='YlGnBu', )

    # Nice view from the front
    mlab.view(.0, -5.0, 4)
    mlab.show()

### Navigation

- index
- next |
- previous |
- Mayavi v3.3.0 documentation »
- Example gallery »