.. _showcase-firefox:

showcase example code: firefox.py
=================================



.. plot:: /home/tcaswell/src/p/matplotlib/doc/mpl_examples/showcase/firefox.py

::

    """
    =======
    Firefox
    =======
    
    This example shows how to create the Firefox logo with path and patches.
    """
    
    import re
    import numpy as np
    import matplotlib.pyplot as plt
    from matplotlib.path import Path
    import matplotlib.patches as patches
    
    # From: http://raphaeljs.com/icons/#firefox
    firefox = "M28.4,22.469c0.479-0.964,0.851-1.991,1.095-3.066c0.953-3.661,0.666-6.854,0.666-6.854l-0.327,2.104c0,0-0.469-3.896-1.044-5.353c-0.881-2.231-1.273-2.214-1.274-2.21c0.542,1.379,0.494,2.169,0.483,2.288c-0.01-0.016-0.019-0.032-0.027-0.047c-0.131-0.324-0.797-1.819-2.225-2.878c-2.502-2.481-5.943-4.014-9.745-4.015c-4.056,0-7.705,1.745-10.238,4.525C5.444,6.5,5.183,5.938,5.159,5.317c0,0-0.002,0.002-0.006,0.005c0-0.011-0.003-0.021-0.003-0.031c0,0-1.61,1.247-1.436,4.612c-0.299,0.574-0.56,1.172-0.777,1.791c-0.375,0.817-0.75,2.004-1.059,3.746c0,0,0.133-0.422,0.399-0.988c-0.064,0.482-0.103,0.971-0.116,1.467c-0.09,0.845-0.118,1.865-0.039,3.088c0,0,0.032-0.406,0.136-1.021c0.834,6.854,6.667,12.165,13.743,12.165l0,0c1.86,0,3.636-0.37,5.256-1.036C24.938,27.771,27.116,25.196,28.4,22.469zM16.002,3.356c2.446,0,4.73,0.68,6.68,1.86c-2.274-0.528-3.433-0.261-3.423-0.248c0.013,0.015,3.384,0.589,3.981,1.411c0,0-1.431,0-2.856,0.41c-0.065,0.019,5.242,0.663,6.327,5.966c0,0-0.582-1.213-1.301-1.42c0.473,1.439,0.351,4.17-0.1,5.528c-0.058,0.174-0.118-0.755-1.004-1.155c0.284,2.037-0.018,5.268-1.432,6.158c-0.109,0.07,0.887-3.189,0.201-1.93c-4.093,6.276-8.959,2.539-10.934,1.208c1.585,0.388,3.267,0.108,4.242-0.559c0.982-0.672,1.564-1.162,2.087-1.047c0.522,0.117,0.87-0.407,0.464-0.872c-0.405-0.466-1.392-1.105-2.725-0.757c-0.94,0.247-2.107,1.287-3.886,0.233c-1.518-0.899-1.507-1.63-1.507-2.095c0-0.366,0.257-0.88,0.734-1.028c0.58,0.062,1.044,0.214,1.537,0.466c0.005-0.135,0.006-0.315-0.001-0.519c0.039-0.077,0.015-0.311-0.047-0.596c-0.036-0.287-0.097-0.582-0.19-0.851c0.01-0.002,0.017-0.007,0.021-0.021c0.076-0.344,2.147-1.544,2.299-1.659c0.153-0.114,0.55-0.378,0.506-1.183c-0.015-0.265-0.058-0.294-2.232-0.286c-0.917,0.003-1.425-0.894-1.589-1.245c0.222-1.231,0.863-2.11,1.919-2.704c0.02-0.011,0.015-0.021-0.008-0.027c0.219-0.127-2.524-0.006-3.76,1.604C9.674,8.045,9.219,7.95,8.71,7.95c-0.638,0-1.139,0.07-1.603,0.187c-0.05,0.013-0.122,0.011-0.208-0.001C6.769,8.04,6.575,7.88,6.365,7.672c0.161-0.18,0.324-0.356,0.495-0.526C9.201,4.804,12.43,3.357,16.002,3.356z"
    
    
    def svg_parse(path):
        commands = {'M': (Path.MOVETO,),
                    'L': (Path.LINETO,),
                    'Q': (Path.CURVE3,)*2,
                    'C': (Path.CURVE4,)*3,
                    'Z': (Path.CLOSEPOLY,)}
        path_re = re.compile(r'([MLHVCSQTAZ])([^MLHVCSQTAZ]+)', re.IGNORECASE)
        float_re = re.compile(r'(?:[\s,]*)([+-]?\d+(?:\.\d+)?)')
        vertices = []
        codes = []
        last = (0, 0)
        for cmd, values in path_re.findall(path):
            points = [float(v) for v in float_re.findall(values)]
            points = np.array(points).reshape((len(points)//2, 2))
            if cmd.islower():
                points += last
            cmd = cmd.capitalize()
            last = points[-1]
            codes.extend(commands[cmd])
            vertices.extend(points.tolist())
        return codes, vertices
    
    # SVG to matplotlib
    codes, verts = svg_parse(firefox)
    verts = np.array(verts)
    path = Path(verts, codes)
    
    # Make upside down
    verts[:, 1] *= -1
    xmin, xmax = verts[:, 0].min()-1, verts[:, 0].max()+1
    ymin, ymax = verts[:, 1].min()-1, verts[:, 1].max()+1
    
    fig = plt.figure(figsize=(5, 5))
    ax = fig.add_axes([0.0, 0.0, 1.0, 1.0], frameon=False, aspect=1)
    
    # White outline (width = 6)
    patch = patches.PathPatch(path, facecolor='None', edgecolor='w', lw=6)
    ax.add_patch(patch)
    
    # Actual shape with black outline
    patch = patches.PathPatch(path, facecolor='orange', edgecolor='k', lw=2)
    ax.add_patch(patch)
    
    # Centering
    ax.set_xlim(xmin, xmax)
    ax.set_ylim(ymin, ymax)
    
    # No ticks
    ax.set_xticks([])
    ax.set_yticks([])
    
    # Display
    plt.show()
    

Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)