Penkit

Penkit is a library of utility functions generating pen plots <https://en.wikipedia.org/wiki/Plotter>__ from Python/numpy.

Installation

Requirements: Python 2.7 or 3.x, numpy, scipy. Preview modules require ipython or matplotlib.

# pip install penkit

Documentation

• Download the tutorial notebooks <tutorial>_ or run them on Binder <https://mybinder.org/v2/gh/paulgb/penkit.git/master?filepath=tutorial>_
• Module Documentation <http://penkit.readthedocs.io/en/latest/>_

Examples

Grid Surface Projection

.. code:: python

    from penkit.textures import make_grid_texture
    from penkit.textures.util import rotate_texture
    from penkit.surfaces import make_noise_surface
    from penkit.write import write_plot
    from penkit.projection import project_and_occlude_texture
    
    # create a texture
    grid_density = 68
    texture = make_grid_texture(grid_density, grid_density, 100)
    
    # rotate the texture
    texture = rotate_texture(texture, rotation=65)
    
    # create the surface
    surface = make_noise_surface(blur=28, seed=12345) * 10
    
    # project the texture onto the surface
    proj = project_and_occlude_texture(texture, surface, angle=69)
    
    # plot the result
    write_plot([proj], 'examples/grid_surface.svg')

.. image:: examples/grid_surface.svg
   :width: 400px

Hilbert Curve Surface Projection

.. code:: python

from penkit.fractal import hilbert_curve
from penkit.textures.util import fit_texture, rotate_texture
from penkit.surfaces import make_noise_surface
from penkit.projection import project_and_occlude_texture
from penkit.write import write_plot

# create a texture
texture = hilbert_curve(7)

# rotate the texture
texture = rotate_texture(texture, 30)
texture = fit_texture(texture)

# create the surface
surface = make_noise_surface(blur=30) * 5

# project the texture onto the surface
proj = project_and_occlude_texture(texture, surface, 50)

# plot the result
write_plot([proj], 'examples/hilbert_surface.svg')

.. image:: examples/hilbert_surface.svg :width: 400px

.. image:: https://travis-ci.org/paulgb/penkit.svg?branch=master :target: https://travis-ci.org/paulgb/penkit

.. image:: https://mybinder.org/badge.svg :target: https://mybinder.org/v2/gh/paulgb/penkit.git/master?filepath=tutorial