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On 2/14/14 4:13 PM, Benjamin Root wrote:
> I rolled a 20 today for necromancer, so I am going to do a thread
> resurrection. Given recent improvements in matplotlib, we should
> definitely make this web-enabled. That way, we can share our nerdiness
> with our non-nerdy significant others.
Here's one try, with the experimental CommFigure IPython comm-based 
matplotlib backend I tweaked a few months ago:
http://sagecell.sagemath.org/?q=vcycko
(it responds to mouse motion, so move your mouse around. Change the 
duration line at the top to change how fast the heart beats.)
Thanks,
Jason

Amazing...
Great work!
2014年02月15日 0:13 GMT+02:00 Benjamin Root <ben...@ou...>:
> I rolled a 20 today for necromancer, so I am going to do a thread
> resurrection. Given recent improvements in matplotlib, we should
> definitely make this web-enabled. That way, we can share our nerdiness with
> our non-nerdy significant others.
>
> Happy Valentine's day!
> Ben
>
> On Mon, Feb 14, 2011 at 8:25 PM, Paul Ivanov <piv...@gm...> wrote:
>
>> jules hummon, on 2011年02月14日 07:23, wrote:
>> > Feel free to 'save and run', pass along, or ignore.
>> > This was my valentine's day present today.
>>
>> Thank you for sharing! I took the liberty of livening it up for
>> my sweetheart.
>>
>> #---------------------------------------------------
>> # hohumheartbeat.py - a more lively hohumheart.py ;)
>>
>> import numpy as np
>> import matplotlib as mpl
>> import matplotlib.pyplot as plt
>> from matplotlib.patches import Polygon
>>
>> # force square figure and square axes looks better for polar, IMO
>> width, height = mpl.rcParams['figure.figsize']
>> size = min(width, height)
>> # make a square figure
>> fig = plt.figure(figsize=(size, size))
>> ax = fig.add_axes([0.1, 0.1, 0.8, 0.8], polar=True, axisbg='#ffffff')
>> ax2 = fig.add_axes([0.45, .9, 0.1, 0.1], polar=True, axisbg='#ffffff')
>>
>> ax.set_rmax(2.0)
>> ax2.set_rmax(4.0)
>> ax2.spines['polar'].set_visible(False)
>> ax2.patch.set_alpha(.3)
>> for a in ax,ax2:
>> a.set_xticks([])
>> a.set_yticks([])
>> ax.grid(False)
>>
>> theta = np.linspace(0,1,100)*np.pi*2
>> r = 1*(1-np.cos(theta))
>>
>> ncards = 5
>> step = 2*np.pi/ncards
>> pdict = dict(fc='r',ec='k', alpha=.5)
>> for ii in range(ncards):
>> tr = np.column_stack((theta+ii*step, r))
>> ax.add_patch(Polygon(tr, **pdict))
>>
>> # from WolframMath "Heart Curve"
>> r2 = 2 - 2*np.sin(theta)
>> r2 += np.sin(theta) * np.sqrt(np.abs(np.cos(theta))) / (np.sin(theta)+1.4)
>>
>> tr2 = np.column_stack((theta, r2))
>> ax2.add_patch(Polygon(tr2,**pdict)) # heart
>>
>> kwargs = dict(transform=ax2.transAxes, va='center', fontsize=20)
>> ax2.text(0,.45,"I",ha='right',**kwargs)
>> ax2.text(1,.4,"you",ha='left',**kwargs)
>>
>> beat = np.tan(np.linspace(0, np.pi*2, 100))
>> beat[0:20] = beat[60:80]
>> beat[-20:] = beat[20:40]
>> beat -= beat.min()
>> beat /= beat.max()
>>
>> i=0; beatlen = len(beat)-1;
>> def heartbeat(e):
>> global i;
>> i = (i+1) % (beatlen)
>> y = beat[i]
>> ax2.set_rmax(y*4. + 4.)
>> ax2.draw(ax.figure.canvas.get_renderer())
>> ax2.figure.canvas.blit(ax2.bbox)
>> #plt.draw() #use if the last two lines cause trouble
>>
>> # even your mouse movements make my heart skip a bit!
>> cid = ax.figure.canvas.mpl_connect('idle_event', heartbeat)
>>
>> print "ax.figure.canvas.mpl_disconnect(%d)" %cid
>> print "#run the line above to 'flatline' (stop heartbeat)"
>> plt.show()
>>
>> best,
>> --
>> Paul Ivanov
>> 314 address only used for lists, off-list direct email at:
>> http://pirsquared.org | GPG/PGP key id: 0x0F3E28F7
>>
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>>
>>
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