File:Animated construction of butterfly curve.gif
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Animated_construction_of_butterfly_curve.gif (500 × 500 pixels, file size: 3.33 MB, MIME type: image/gif, looped, 202 frames)
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[edit]DescriptionAnimated construction of butterfly curve.gif |
English: Animated construction of the mathematical function, butterfly curve
I made this with SAGE, an open-source math package, for entertainment, as an exercise. Permalink here; original source code (not this version) follows: #***************************************************************************** # Copyright (C) 2008 Dean Moore # # # Distributed under the terms of the GNU General Public License (GPL) # http://www.gnu.org/licenses/ #***************************************************************************** # Animates the construction of the Butterfly Curve. # Written by Dean Moore, March 30 -- April 01, 2008 def animate_curve((g,f), a, b, step, x_min, x_max, y_min, y_max, fig_size = 5): v = [] def c(i): # For output return ((i-a)/(b-a), 0, 1-(i-a)/(b-a)) # colors. for i in srange(a, b + step, step): if i >= b: curve_color=(0,0,1) # Final image is blue. else: curve_color = c(i) p = parametric_plot((g,f), 0, i, rgbcolor=curve_color, plot_points=50*(i-a+1)/step, thickness = 0.25) if i < b: p = p + points((g(i),f(i)),rgbcolor=(0,0,0), pointsize=10) # Terminal point on all but last image. v.append(p) a = animate(v, xmin=x_min, xmax = x_max, ymin = y_min, ymax = y_max, figsize=[fig_size,fig_size]) return a figure_size = 4 x_min = -4;x_max = 4;y_min = -2; y_max = 5 number_of_images_in_final_frozen_image = 12 delay_between_images = 0 def g(x): return sin(x)*(e^(cos(x)) - 2*cos(4*x) - (sin(x/12))^5) # Parametric def f(x): # equations of the return cos(x)*(e^(cos(x)) - 2*cos(4*x) - (sin(x/12))^5) # Butterfly Curve. step = 0.5 b = animate_curve((g,f),0, 24*pi, step, x_min, x_max, y_min, y_max, figure_size) d = animate([b[-1] for i in srange(0, number_of_images_in_final_frozen_image)], # Last image xmin=x_min, ymin=y_min, # is "held" a xmax=x_max, ymax=y_max, # time. figsize=[figure_size,figure_size])(b*d).show(delay = delay_between_images) |
Date | |
Source | Own work (Original text: self-made) |
Author | dino (talk) |
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[edit]The original description page was here. All following user names refer to en.wikipedia.
Date/Time | Dimensions | User | Comment |
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2008-04-04 00:30 | 500×500× (3487267 bytes) | Dino | better version. Source code [https://www.sagenb.org/home/pub/1767/ here]. |
2008-04-02 02:10 | 400×400× (2216154 bytes) | Dino |
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 04:11, 8 August 2017 | ![]() | 500 × 500 (3.33 MB) | BD2412 (talk | contribs) | Transferred from en.wikipedia |
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