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<h1 class="title">La Noche Estrellada - Van Gogh</h1>
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<section id="simulación-de-la-noche-estrellada-de-van-gogh" class="level2">
<h2 class="anchored" data-anchor-id="simulación-de-la-noche-estrellada-de-van-gogh">Simulación de “La Noche Estrellada” de Van Gogh</h2>
<p>Esta visualización recrea el estilo de la famosa pintura de Van Gogh usando vectores, con animación de las estrellas y el cielo.</p>
<div id="dd22f916" class="cell" data-execution_count="1">
<details class="code-fold">
<summary>Mostrar código</summary>
<div class="code-copy-outer-scaffold"><div class="sourceCode cell-code" id="cb1"><pre class="sourceCode python code-with-copy"><code class="sourceCode python"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> numpy <span class="im">as</span> np</span>
<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a><span class="im">import</span> matplotlib.pyplot <span class="im">as</span> plt</span>
<span id="cb1-3"><a href="#cb1-3" aria-hidden="true" tabindex="-1"></a><span class="im">from</span> matplotlib.patches <span class="im">import</span> Circle, Rectangle</span>
<span id="cb1-4"><a href="#cb1-4" aria-hidden="true" tabindex="-1"></a><span class="im">from</span> matplotlib.collections <span class="im">import</span> LineCollection</span>
<span id="cb1-5"><a href="#cb1-5" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-6"><a href="#cb1-6" aria-hidden="true" tabindex="-1"></a><span class="co"># Configurar la figura</span></span>
<span id="cb1-7"><a href="#cb1-7" aria-hidden="true" tabindex="-1"></a>fig, ax <span class="op">=</span> plt.subplots(figsize<span class="op">=</span>(<span class="dv">12</span>, <span class="dv">8</span>), facecolor<span class="op">=</span><span class="st">'#0a1929'</span>)</span>
<span id="cb1-8"><a href="#cb1-8" aria-hidden="true" tabindex="-1"></a>ax.set_xlim(<span class="op">-</span><span class="dv">2</span>, <span class="dv">102</span>)</span>
<span id="cb1-9"><a href="#cb1-9" aria-hidden="true" tabindex="-1"></a>ax.set_ylim(<span class="op">-</span><span class="dv">2</span>, <span class="dv">102</span>)</span>
<span id="cb1-10"><a href="#cb1-10" aria-hidden="true" tabindex="-1"></a>ax.set_aspect(<span class="st">'equal'</span>)</span>
<span id="cb1-11"><a href="#cb1-11" aria-hidden="true" tabindex="-1"></a>ax.axis(<span class="st">'off'</span>)</span>
<span id="cb1-12"><a href="#cb1-12" aria-hidden="true" tabindex="-1"></a>fig.patch.set_facecolor(<span class="st">'#0a1929'</span>)</span>
<span id="cb1-13"><a href="#cb1-13" aria-hidden="true" tabindex="-1"></a>plt.subplots_adjust(left<span class="op">=</span><span class="dv">0</span>, right<span class="op">=</span><span class="dv">1</span>, top<span class="op">=</span><span class="dv">1</span>, bottom<span class="op">=</span><span class="dv">0</span>)</span>
<span id="cb1-14"><a href="#cb1-14" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-15"><a href="#cb1-15" aria-hidden="true" tabindex="-1"></a><span class="co"># Colores inspirados en Van Gogh</span></span>
<span id="cb1-16"><a href="#cb1-16" aria-hidden="true" tabindex="-1"></a>color_cielo_oscuro <span class="op">=</span> <span class="st">'#1a3a52'</span></span>
<span id="cb1-17"><a href="#cb1-17" aria-hidden="true" tabindex="-1"></a>color_cielo_medio <span class="op">=</span> <span class="st">'#2d5a7b'</span></span>
<span id="cb1-18"><a href="#cb1-18" aria-hidden="true" tabindex="-1"></a>color_cielo_claro <span class="op">=</span> <span class="st">'#4a7ba7'</span></span>
<span id="cb1-19"><a href="#cb1-19" aria-hidden="true" tabindex="-1"></a>color_estrella <span class="op">=</span> <span class="st">'#ffeb3b'</span></span>
<span id="cb1-20"><a href="#cb1-20" aria-hidden="true" tabindex="-1"></a>color_luna <span class="op">=</span> <span class="st">'#ffd700'</span></span>
<span id="cb1-21"><a href="#cb1-21" aria-hidden="true" tabindex="-1"></a>color_montanas <span class="op">=</span> <span class="st">'#2c3e50'</span></span>
<span id="cb1-22"><a href="#cb1-22" aria-hidden="true" tabindex="-1"></a>color_pueblo <span class="op">=</span> <span class="st">'#34495e'</span></span>
<span id="cb1-23"><a href="#cb1-23" aria-hidden="true" tabindex="-1"></a>color_cipres <span class="op">=</span> <span class="st">'#1e3a2e'</span></span>
<span id="cb1-24"><a href="#cb1-24" aria-hidden="true" tabindex="-1"></a>color_ventanas <span class="op">=</span> <span class="st">'#f39c12'</span></span>
<span id="cb1-25"><a href="#cb1-25" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-26"><a href="#cb1-26" aria-hidden="true" tabindex="-1"></a><span class="co"># Fondo del cielo con gradiente</span></span>
<span id="cb1-27"><a href="#cb1-27" aria-hidden="true" tabindex="-1"></a>gradient_colors <span class="op">=</span> [color_cielo_oscuro, color_cielo_medio, color_cielo_claro]</span>
<span id="cb1-28"><a href="#cb1-28" aria-hidden="true" tabindex="-1"></a><span class="cf">for</span> i <span class="kw">in</span> <span class="bu">range</span>(<span class="dv">100</span>):</span>
<span id="cb1-29"><a href="#cb1-29" aria-hidden="true" tabindex="-1"></a> y_pos <span class="op">=</span> i</span>
<span id="cb1-30"><a href="#cb1-30" aria-hidden="true" tabindex="-1"></a> color_index <span class="op">=</span> <span class="bu">int</span>(i <span class="op">/</span> <span class="dv">33</span>)</span>
<span id="cb1-31"><a href="#cb1-31" aria-hidden="true" tabindex="-1"></a> <span class="cf">if</span> color_index <span class="op">>=</span> <span class="bu">len</span>(gradient_colors):</span>
<span id="cb1-32"><a href="#cb1-32" aria-hidden="true" tabindex="-1"></a> color_index <span class="op">=</span> <span class="bu">len</span>(gradient_colors) <span class="op">-</span> <span class="dv">1</span></span>
<span id="cb1-33"><a href="#cb1-33" aria-hidden="true" tabindex="-1"></a> ax.add_patch(Rectangle((<span class="dv">0</span>, y_pos), <span class="dv">100</span>, <span class="dv">1</span>, </span>
<span id="cb1-34"><a href="#cb1-34" aria-hidden="true" tabindex="-1"></a> color<span class="op">=</span>gradient_colors[color_index], </span>
<span id="cb1-35"><a href="#cb1-35" aria-hidden="true" tabindex="-1"></a> alpha<span class="op">=</span><span class="fl">0.3</span>))</span>
<span id="cb1-36"><a href="#cb1-36" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-37"><a href="#cb1-37" aria-hidden="true" tabindex="-1"></a><span class="co"># Función para crear espirales (remolinos de Van Gogh)</span></span>
<span id="cb1-38"><a href="#cb1-38" aria-hidden="true" tabindex="-1"></a><span class="kw">def</span> crear_espiral(cx, cy, radio, n_puntos<span class="op">=</span><span class="dv">100</span>, vueltas<span class="op">=</span><span class="dv">3</span>):</span>
<span id="cb1-39"><a href="#cb1-39" aria-hidden="true" tabindex="-1"></a> theta <span class="op">=</span> np.linspace(<span class="dv">0</span>, vueltas <span class="op">*</span> <span class="dv">2</span> <span class="op">*</span> np.pi, n_puntos)</span>
<span id="cb1-40"><a href="#cb1-40" aria-hidden="true" tabindex="-1"></a> r <span class="op">=</span> np.linspace(<span class="dv">0</span>, radio, n_puntos)</span>
<span id="cb1-41"><a href="#cb1-41" aria-hidden="true" tabindex="-1"></a> x <span class="op">=</span> cx <span class="op">+</span> r <span class="op">*</span> np.cos(theta)</span>
<span id="cb1-42"><a href="#cb1-42" aria-hidden="true" tabindex="-1"></a> y <span class="op">=</span> cy <span class="op">+</span> r <span class="op">*</span> np.sin(theta)</span>
<span id="cb1-43"><a href="#cb1-43" aria-hidden="true" tabindex="-1"></a> <span class="cf">return</span> x, y</span>
<span id="cb1-44"><a href="#cb1-44" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-45"><a href="#cb1-45" aria-hidden="true" tabindex="-1"></a><span class="co"># Crear múltiples espirales en el cielo con diferentes intensidades</span></span>
<span id="cb1-46"><a href="#cb1-46" aria-hidden="true" tabindex="-1"></a>posiciones_espirales <span class="op">=</span> [</span>
<span id="cb1-47"><a href="#cb1-47" aria-hidden="true" tabindex="-1"></a> (<span class="dv">20</span>, <span class="dv">80</span>, <span class="dv">8</span>, <span class="st">'#4a7ba7'</span>, <span class="fl">0.7</span>),</span>
<span id="cb1-48"><a href="#cb1-48" aria-hidden="true" tabindex="-1"></a> (<span class="dv">50</span>, <span class="dv">85</span>, <span class="dv">10</span>, <span class="st">'#5a8bb7'</span>, <span class="fl">0.8</span>),</span>
<span id="cb1-49"><a href="#cb1-49" aria-hidden="true" tabindex="-1"></a> (<span class="dv">75</span>, <span class="dv">75</span>, <span class="dv">7</span>, <span class="st">'#4a7ba7'</span>, <span class="fl">0.6</span>),</span>
<span id="cb1-50"><a href="#cb1-50" aria-hidden="true" tabindex="-1"></a> (<span class="dv">35</span>, <span class="dv">70</span>, <span class="dv">6</span>, <span class="st">'#5a8bb7'</span>, <span class="fl">0.65</span>),</span>
<span id="cb1-51"><a href="#cb1-51" aria-hidden="true" tabindex="-1"></a> (<span class="dv">65</span>, <span class="dv">90</span>, <span class="dv">9</span>, <span class="st">'#6a9bc7'</span>, <span class="fl">0.75</span>),</span>
<span id="cb1-52"><a href="#cb1-52" aria-hidden="true" tabindex="-1"></a>]</span>
<span id="cb1-53"><a href="#cb1-53" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-54"><a href="#cb1-54" aria-hidden="true" tabindex="-1"></a><span class="cf">for</span> cx, cy, radio, color, alpha <span class="kw">in</span> posiciones_espirales:</span>
<span id="cb1-55"><a href="#cb1-55" aria-hidden="true" tabindex="-1"></a> x, y <span class="op">=</span> crear_espiral(cx, cy, radio)</span>
<span id="cb1-56"><a href="#cb1-56" aria-hidden="true" tabindex="-1"></a> points <span class="op">=</span> np.array([x, y]).T.reshape(<span class="op">-</span><span class="dv">1</span>, <span class="dv">1</span>, <span class="dv">2</span>)</span>
<span id="cb1-57"><a href="#cb1-57" aria-hidden="true" tabindex="-1"></a> segments <span class="op">=</span> np.concatenate([points[:<span class="op">-</span><span class="dv">1</span>], points[<span class="dv">1</span>:]], axis<span class="op">=</span><span class="dv">1</span>)</span>
<span id="cb1-58"><a href="#cb1-58" aria-hidden="true" tabindex="-1"></a> lc <span class="op">=</span> LineCollection(segments, colors<span class="op">=</span>color, linewidths<span class="op">=</span><span class="dv">3</span>, alpha<span class="op">=</span>alpha)</span>
<span id="cb1-59"><a href="#cb1-59" aria-hidden="true" tabindex="-1"></a> ax.add_collection(lc)</span>
<span id="cb1-60"><a href="#cb1-60" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-61"><a href="#cb1-61" aria-hidden="true" tabindex="-1"></a><span class="co"># Montañas onduladas</span></span>
<span id="cb1-62"><a href="#cb1-62" aria-hidden="true" tabindex="-1"></a>x_montana <span class="op">=</span> np.linspace(<span class="dv">0</span>, <span class="dv">100</span>, <span class="dv">200</span>)</span>
<span id="cb1-63"><a href="#cb1-63" aria-hidden="true" tabindex="-1"></a>y_montana <span class="op">=</span> <span class="dv">25</span> <span class="op">+</span> <span class="dv">8</span> <span class="op">*</span> np.sin(x_montana <span class="op">*</span> <span class="fl">0.1</span>) <span class="op">+</span> <span class="dv">3</span> <span class="op">*</span> np.cos(x_montana <span class="op">*</span> <span class="fl">0.15</span>)</span>
<span id="cb1-64"><a href="#cb1-64" aria-hidden="true" tabindex="-1"></a>ax.fill_between(x_montana, <span class="dv">0</span>, y_montana, color<span class="op">=</span>color_montanas, alpha<span class="op">=</span><span class="fl">0.9</span>)</span>
<span id="cb1-65"><a href="#cb1-65" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-66"><a href="#cb1-66" aria-hidden="true" tabindex="-1"></a><span class="co"># Ciprés ondulante (árbol característico)</span></span>
<span id="cb1-67"><a href="#cb1-67" aria-hidden="true" tabindex="-1"></a>cipres_x <span class="op">=</span> np.array([<span class="dv">15</span>, <span class="dv">12</span>, <span class="dv">10</span>, <span class="dv">8</span>, <span class="dv">10</span>, <span class="dv">12</span>, <span class="dv">15</span>, <span class="dv">18</span>, <span class="dv">20</span>, <span class="dv">22</span>, <span class="dv">20</span>, <span class="dv">18</span>])</span>
<span id="cb1-68"><a href="#cb1-68" aria-hidden="true" tabindex="-1"></a>cipres_y <span class="op">=</span> np.array([<span class="dv">0</span>, <span class="dv">15</span>, <span class="dv">30</span>, <span class="dv">45</span>, <span class="dv">60</span>, <span class="dv">70</span>, <span class="dv">85</span>, <span class="dv">70</span>, <span class="dv">60</span>, <span class="dv">45</span>, <span class="dv">30</span>, <span class="dv">15</span>])</span>
<span id="cb1-69"><a href="#cb1-69" aria-hidden="true" tabindex="-1"></a>ax.fill(cipres_x, cipres_y, color<span class="op">=</span>color_cipres, alpha<span class="op">=</span><span class="fl">0.95</span>)</span>
<span id="cb1-70"><a href="#cb1-70" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-71"><a href="#cb1-71" aria-hidden="true" tabindex="-1"></a><span class="co"># Pueblo con casitas</span></span>
<span id="cb1-72"><a href="#cb1-72" aria-hidden="true" tabindex="-1"></a>casas <span class="op">=</span> [</span>
<span id="cb1-73"><a href="#cb1-73" aria-hidden="true" tabindex="-1"></a> (<span class="dv">30</span>, <span class="dv">10</span>, <span class="dv">8</span>, <span class="dv">12</span>),</span>
<span id="cb1-74"><a href="#cb1-74" aria-hidden="true" tabindex="-1"></a> (<span class="dv">40</span>, <span class="dv">10</span>, <span class="dv">7</span>, <span class="dv">10</span>),</span>
<span id="cb1-75"><a href="#cb1-75" aria-hidden="true" tabindex="-1"></a> (<span class="dv">50</span>, <span class="dv">10</span>, <span class="dv">9</span>, <span class="dv">14</span>),</span>
<span id="cb1-76"><a href="#cb1-76" aria-hidden="true" tabindex="-1"></a> (<span class="dv">60</span>, <span class="dv">10</span>, <span class="dv">6</span>, <span class="dv">9</span>),</span>
<span id="cb1-77"><a href="#cb1-77" aria-hidden="true" tabindex="-1"></a> (<span class="dv">70</span>, <span class="dv">10</span>, <span class="dv">8</span>, <span class="dv">11</span>),</span>
<span id="cb1-78"><a href="#cb1-78" aria-hidden="true" tabindex="-1"></a>]</span>
<span id="cb1-79"><a href="#cb1-79" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-80"><a href="#cb1-80" aria-hidden="true" tabindex="-1"></a>np.random.seed(<span class="dv">42</span>)</span>
<span id="cb1-81"><a href="#cb1-81" aria-hidden="true" tabindex="-1"></a><span class="cf">for</span> x, y, w, h <span class="kw">in</span> casas:</span>
<span id="cb1-82"><a href="#cb1-82" aria-hidden="true" tabindex="-1"></a> <span class="co"># Casa</span></span>
<span id="cb1-83"><a href="#cb1-83" aria-hidden="true" tabindex="-1"></a> ax.add_patch(Rectangle((x, y), w, h, color<span class="op">=</span>color_pueblo, alpha<span class="op">=</span><span class="fl">0.9</span>))</span>
<span id="cb1-84"><a href="#cb1-84" aria-hidden="true" tabindex="-1"></a> <span class="co"># Techo triangular</span></span>
<span id="cb1-85"><a href="#cb1-85" aria-hidden="true" tabindex="-1"></a> techo_x <span class="op">=</span> [x, x <span class="op">+</span> w<span class="op">/</span><span class="dv">2</span>, x <span class="op">+</span> w]</span>
<span id="cb1-86"><a href="#cb1-86" aria-hidden="true" tabindex="-1"></a> techo_y <span class="op">=</span> [y <span class="op">+</span> h, y <span class="op">+</span> h <span class="op">+</span> <span class="dv">4</span>, y <span class="op">+</span> h]</span>
<span id="cb1-87"><a href="#cb1-87" aria-hidden="true" tabindex="-1"></a> ax.fill(techo_x, techo_y, color<span class="op">=</span>color_montanas, alpha<span class="op">=</span><span class="fl">0.9</span>)</span>
<span id="cb1-88"><a href="#cb1-88" aria-hidden="true" tabindex="-1"></a> <span class="co"># Ventanas iluminadas</span></span>
<span id="cb1-89"><a href="#cb1-89" aria-hidden="true" tabindex="-1"></a> <span class="cf">if</span> np.random.random() <span class="op">></span> <span class="fl">0.3</span>:</span>
<span id="cb1-90"><a href="#cb1-90" aria-hidden="true" tabindex="-1"></a> ax.add_patch(Rectangle((x <span class="op">+</span> w<span class="op">*</span><span class="fl">0.3</span>, y <span class="op">+</span> h<span class="op">*</span><span class="fl">0.4</span>), w<span class="op">*</span><span class="fl">0.3</span>, h<span class="op">*</span><span class="fl">0.25</span>, </span>
<span id="cb1-91"><a href="#cb1-91" aria-hidden="true" tabindex="-1"></a> color<span class="op">=</span>color_ventanas, alpha<span class="op">=</span><span class="fl">0.85</span>))</span>
<span id="cb1-92"><a href="#cb1-92" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-93"><a href="#cb1-93" aria-hidden="true" tabindex="-1"></a><span class="co"># Luna grande con halo</span></span>
<span id="cb1-94"><a href="#cb1-94" aria-hidden="true" tabindex="-1"></a>ax.add_patch(Circle((<span class="dv">85</span>, <span class="dv">85</span>), <span class="dv">9</span>, color<span class="op">=</span>color_luna, alpha<span class="op">=</span><span class="fl">0.3</span>, zorder<span class="op">=</span><span class="dv">9</span>))</span>
<span id="cb1-95"><a href="#cb1-95" aria-hidden="true" tabindex="-1"></a>ax.add_patch(Circle((<span class="dv">85</span>, <span class="dv">85</span>), <span class="dv">6</span>, color<span class="op">=</span>color_luna, alpha<span class="op">=</span><span class="fl">0.95</span>, zorder<span class="op">=</span><span class="dv">10</span>))</span>
<span id="cb1-96"><a href="#cb1-96" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-97"><a href="#cb1-97" aria-hidden="true" tabindex="-1"></a><span class="co"># Estrellas grandes con halos</span></span>
<span id="cb1-98"><a href="#cb1-98" aria-hidden="true" tabindex="-1"></a>posiciones_estrellas <span class="op">=</span> [</span>
<span id="cb1-99"><a href="#cb1-99" aria-hidden="true" tabindex="-1"></a> (<span class="dv">25</span>, <span class="dv">85</span>, <span class="fl">2.5</span>),</span>
<span id="cb1-100"><a href="#cb1-100" aria-hidden="true" tabindex="-1"></a> (<span class="dv">55</span>, <span class="dv">90</span>, <span class="fl">3.2</span>),</span>
<span id="cb1-101"><a href="#cb1-101" aria-hidden="true" tabindex="-1"></a> (<span class="dv">80</span>, <span class="dv">78</span>, <span class="fl">2.8</span>),</span>
<span id="cb1-102"><a href="#cb1-102" aria-hidden="true" tabindex="-1"></a> (<span class="dv">40</span>, <span class="dv">75</span>, <span class="fl">2.3</span>),</span>
<span id="cb1-103"><a href="#cb1-103" aria-hidden="true" tabindex="-1"></a> (<span class="dv">70</span>, <span class="dv">92</span>, <span class="fl">2.6</span>),</span>
<span id="cb1-104"><a href="#cb1-104" aria-hidden="true" tabindex="-1"></a>]</span>
<span id="cb1-105"><a href="#cb1-105" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-106"><a href="#cb1-106" aria-hidden="true" tabindex="-1"></a><span class="cf">for</span> x, y, r <span class="kw">in</span> posiciones_estrellas:</span>
<span id="cb1-107"><a href="#cb1-107" aria-hidden="true" tabindex="-1"></a> <span class="co"># Halo exterior</span></span>
<span id="cb1-108"><a href="#cb1-108" aria-hidden="true" tabindex="-1"></a> ax.add_patch(Circle((x, y), r<span class="op">*</span><span class="fl">2.5</span>, color<span class="op">=</span>color_estrella, alpha<span class="op">=</span><span class="fl">0.2</span>, zorder<span class="op">=</span><span class="dv">5</span>))</span>
<span id="cb1-109"><a href="#cb1-109" aria-hidden="true" tabindex="-1"></a> <span class="co"># Halo medio</span></span>
<span id="cb1-110"><a href="#cb1-110" aria-hidden="true" tabindex="-1"></a> ax.add_patch(Circle((x, y), r<span class="op">*</span><span class="fl">1.8</span>, color<span class="op">=</span>color_estrella, alpha<span class="op">=</span><span class="fl">0.4</span>, zorder<span class="op">=</span><span class="dv">6</span>))</span>
<span id="cb1-111"><a href="#cb1-111" aria-hidden="true" tabindex="-1"></a> <span class="co"># Estrella central</span></span>
<span id="cb1-112"><a href="#cb1-112" aria-hidden="true" tabindex="-1"></a> ax.add_patch(Circle((x, y), r, color<span class="op">=</span>color_estrella, alpha<span class="op">=</span><span class="fl">0.95</span>, zorder<span class="op">=</span><span class="dv">7</span>))</span>
<span id="cb1-113"><a href="#cb1-113" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-114"><a href="#cb1-114" aria-hidden="true" tabindex="-1"></a><span class="co"># Estrellas pequeñas con variación de tamaño y brillo</span></span>
<span id="cb1-115"><a href="#cb1-115" aria-hidden="true" tabindex="-1"></a>np.random.seed(<span class="dv">42</span>)</span>
<span id="cb1-116"><a href="#cb1-116" aria-hidden="true" tabindex="-1"></a><span class="cf">for</span> i <span class="kw">in</span> <span class="bu">range</span>(<span class="dv">50</span>):</span>
<span id="cb1-117"><a href="#cb1-117" aria-hidden="true" tabindex="-1"></a> x <span class="op">=</span> np.random.uniform(<span class="dv">5</span>, <span class="dv">95</span>)</span>
<span id="cb1-118"><a href="#cb1-118" aria-hidden="true" tabindex="-1"></a> y <span class="op">=</span> np.random.uniform(<span class="dv">50</span>, <span class="dv">95</span>)</span>
<span id="cb1-119"><a href="#cb1-119" aria-hidden="true" tabindex="-1"></a> r <span class="op">=</span> np.random.uniform(<span class="fl">0.3</span>, <span class="fl">1.0</span>)</span>
<span id="cb1-120"><a href="#cb1-120" aria-hidden="true" tabindex="-1"></a> alpha <span class="op">=</span> np.random.uniform(<span class="fl">0.5</span>, <span class="fl">0.9</span>)</span>
<span id="cb1-121"><a href="#cb1-121" aria-hidden="true" tabindex="-1"></a> ax.add_patch(Circle((x, y), r, color<span class="op">=</span>color_estrella, alpha<span class="op">=</span>alpha))</span>
<span id="cb1-122"><a href="#cb1-122" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-123"><a href="#cb1-123" aria-hidden="true" tabindex="-1"></a>plt.tight_layout()</span>
<span id="cb1-124"><a href="#cb1-124" aria-hidden="true" tabindex="-1"></a>plt.show()</span></code></pre></div><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></div>
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<div>
<figure class="figure">
<p><img src="index_files/figure-html/cell-2-output-1.png" width="758" height="758" class="figure-img"></p>
</figure>
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</section>
<section id="versión-animada-con-css" class="level2">
<h2 class="anchored" data-anchor-id="versión-animada-con-css">Versión Animada con CSS</h2>
<details class="code-fold">
<summary>Mostrar código</summary>
<div class="code-copy-outer-scaffold"><div class="sourceCode cell-code" id="cb2"><pre class="sourceCode python code-with-copy"><code class="sourceCode python"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="im">from</span> IPython.display <span class="im">import</span> HTML</span>
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a>html_code <span class="op">=</span> <span class="st">"""</span></span>
<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a><span class="st"><style></span></span>
<span id="cb2-5"><a href="#cb2-5" aria-hidden="true" tabindex="-1"></a><span class="st">@keyframes pulse {</span></span>
<span id="cb2-6"><a href="#cb2-6" aria-hidden="true" tabindex="-1"></a><span class="st"> 0%, 100% { opacity: 0.8; transform: scale(1); }</span></span>
<span id="cb2-7"><a href="#cb2-7" aria-hidden="true" tabindex="-1"></a><span class="st"> 50% { opacity: 1; transform: scale(1.3); }</span></span>
<span id="cb2-8"><a href="#cb2-8" aria-hidden="true" tabindex="-1"></a><span class="st">}</span></span>
<span id="cb2-9"><a href="#cb2-9" aria-hidden="true" tabindex="-1"></a><span class="st">@keyframes glow {</span></span>
<span id="cb2-10"><a href="#cb2-10" aria-hidden="true" tabindex="-1"></a><span class="st"> 0%, 100% { filter: brightness(1); }</span></span>
<span id="cb2-11"><a href="#cb2-11" aria-hidden="true" tabindex="-1"></a><span class="st"> 50% { filter: brightness(1.5); }</span></span>
<span id="cb2-12"><a href="#cb2-12" aria-hidden="true" tabindex="-1"></a><span class="st">}</span></span>
<span id="cb2-13"><a href="#cb2-13" aria-hidden="true" tabindex="-1"></a><span class="st">@keyframes twinkle {</span></span>
<span id="cb2-14"><a href="#cb2-14" aria-hidden="true" tabindex="-1"></a><span class="st"> 0%, 100% { opacity: 0.6; }</span></span>
<span id="cb2-15"><a href="#cb2-15" aria-hidden="true" tabindex="-1"></a><span class="st"> 50% { opacity: 1; }</span></span>
<span id="cb2-16"><a href="#cb2-16" aria-hidden="true" tabindex="-1"></a><span class="st">}</span></span>
<span id="cb2-17"><a href="#cb2-17" aria-hidden="true" tabindex="-1"></a><span class="st">.star-big {</span></span>
<span id="cb2-18"><a href="#cb2-18" aria-hidden="true" tabindex="-1"></a><span class="st"> animation: pulse 2s ease-in-out infinite;</span></span>
<span id="cb2-19"><a href="#cb2-19" aria-hidden="true" tabindex="-1"></a><span class="st">}</span></span>
<span id="cb2-20"><a href="#cb2-20" aria-hidden="true" tabindex="-1"></a><span class="st">.star-small {</span></span>
<span id="cb2-21"><a href="#cb2-21" aria-hidden="true" tabindex="-1"></a><span class="st"> animation: twinkle 3s ease-in-out infinite;</span></span>
<span id="cb2-22"><a href="#cb2-22" aria-hidden="true" tabindex="-1"></a><span class="st">}</span></span>
<span id="cb2-23"><a href="#cb2-23" aria-hidden="true" tabindex="-1"></a><span class="st">.moon {</span></span>
<span id="cb2-24"><a href="#cb2-24" aria-hidden="true" tabindex="-1"></a><span class="st"> animation: glow 4s ease-in-out infinite;</span></span>
<span id="cb2-25"><a href="#cb2-25" aria-hidden="true" tabindex="-1"></a><span class="st">}</span></span>
<span id="cb2-26"><a href="#cb2-26" aria-hidden="true" tabindex="-1"></a><span class="st"></style></span></span>
<span id="cb2-27"><a href="#cb2-27" aria-hidden="true" tabindex="-1"></a><span class="st"><div style="background: linear-gradient(to top, #1a3a52, #2d5a7b, #4a7ba7); padding: 20px; border-radius: 10px;"></span></span>
<span id="cb2-28"><a href="#cb2-28" aria-hidden="true" tabindex="-1"></a><span class="st"> <svg width="100%" height="500" viewBox="0 0 1000 800"></span></span>
<span id="cb2-29"><a href="#cb2-29" aria-hidden="true" tabindex="-1"></a><span class="st"> <!-- Cielo con espirales --></span></span>
<span id="cb2-30"><a href="#cb2-30" aria-hidden="true" tabindex="-1"></a><span class="st"> <circle cx="200" cy="150" r="80" fill="none" stroke="#4a7ba7" stroke-width="3" opacity="0.6"></span></span>
<span id="cb2-31"><a href="#cb2-31" aria-hidden="true" tabindex="-1"></a><span class="st"> <animateTransform attributeName="transform" type="rotate" from="0 200 150" to="360 200 150" dur="20s" repeatCount="indefinite"/></span></span>
<span id="cb2-32"><a href="#cb2-32" aria-hidden="true" tabindex="-1"></a><span class="st"> </circle></span></span>
<span id="cb2-33"><a href="#cb2-33" aria-hidden="true" tabindex="-1"></a><span class="st"> <circle cx="500" cy="120" r="100" fill="none" stroke="#5a8bb7" stroke-width="3" opacity="0.7"></span></span>
<span id="cb2-34"><a href="#cb2-34" aria-hidden="true" tabindex="-1"></a><span class="st"> <animateTransform attributeName="transform" type="rotate" from="0 500 120" to="360 500 120" dur="25s" repeatCount="indefinite"/></span></span>
<span id="cb2-35"><a href="#cb2-35" aria-hidden="true" tabindex="-1"></a><span class="st"> </circle></span></span>
<span id="cb2-36"><a href="#cb2-36" aria-hidden="true" tabindex="-1"></a><span class="st"> <circle cx="750" cy="180" r="70" fill="none" stroke="#4a7ba7" stroke-width="3" opacity="0.6"></span></span>
<span id="cb2-37"><a href="#cb2-37" aria-hidden="true" tabindex="-1"></a><span class="st"> <animateTransform attributeName="transform" type="rotate" from="0 750 180" to="360 750 180" dur="18s" repeatCount="indefinite"/></span></span>
<span id="cb2-38"><a href="#cb2-38" aria-hidden="true" tabindex="-1"></a><span class="st"> </circle></span></span>
<span id="cb2-39"><a href="#cb2-39" aria-hidden="true" tabindex="-1"></a><span class="st"> </span></span>
<span id="cb2-40"><a href="#cb2-40" aria-hidden="true" tabindex="-1"></a><span class="st"> <!-- Montañas --></span></span>
<span id="cb2-41"><a href="#cb2-41" aria-hidden="true" tabindex="-1"></a><span class="st"> <path d="M 0 600 Q 200 500, 400 550 T 800 520 L 1000 550 L 1000 800 L 0 800 Z" fill="#2c3e50" opacity="0.9"/></span></span>
<span id="cb2-42"><a href="#cb2-42" aria-hidden="true" tabindex="-1"></a><span class="st"> </span></span>
<span id="cb2-43"><a href="#cb2-43" aria-hidden="true" tabindex="-1"></a><span class="st"> <!-- Ciprés --></span></span>
<span id="cb2-44"><a href="#cb2-44" aria-hidden="true" tabindex="-1"></a><span class="st"> <ellipse cx="150" cy="500" rx="40" ry="200" fill="#1e3a2e" opacity="0.95"/></span></span>
<span id="cb2-45"><a href="#cb2-45" aria-hidden="true" tabindex="-1"></a><span class="st"> </span></span>
<span id="cb2-46"><a href="#cb2-46" aria-hidden="true" tabindex="-1"></a><span class="st"> <!-- Pueblo --></span></span>
<span id="cb2-47"><a href="#cb2-47" aria-hidden="true" tabindex="-1"></a><span class="st"> <rect x="300" y="650" width="80" height="120" fill="#34495e"/></span></span>
<span id="cb2-48"><a href="#cb2-48" aria-hidden="true" tabindex="-1"></a><span class="st"> <polygon points="300,650 340,620 380,650" fill="#2c3e50"/></span></span>
<span id="cb2-49"><a href="#cb2-49" aria-hidden="true" tabindex="-1"></a><span class="st"> <rect x="320" y="700" width="30" height="40" fill="#f39c12" opacity="0.8" class="star-small"/></span></span>
<span id="cb2-50"><a href="#cb2-50" aria-hidden="true" tabindex="-1"></a><span class="st"> </span></span>
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<span id="cb2-99"><a href="#cb2-99" aria-hidden="true" tabindex="-1"></a><span class="st">"""</span></span>
<span id="cb2-100"><a href="#cb2-100" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb2-101"><a href="#cb2-101" aria-hidden="true" tabindex="-1"></a>HTML(html_code)</span></code></pre></div><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></div>
</details>
<style>
@keyframes pulse {
0%, 100% { opacity: 0.8; transform: scale(1); }
50% { opacity: 1; transform: scale(1.3); }
}
@keyframes glow {
0%, 100% { filter: brightness(1); }
50% { filter: brightness(1.5); }
}
@keyframes twinkle {
0%, 100% { opacity: 0.6; }
50% { opacity: 1; }
}
.star-big {
animation: pulse 2s ease-in-out infinite;
}
.star-small {
animation: twinkle 3s ease-in-out infinite;
}
.moon {
animation: glow 4s ease-in-out infinite;
}
</style>
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<circle cx="670" cy="360" r="7" fill="#ffeb3b" class="star-small" style="animation-delay: 2.5s;"></circle>
</svg>
</div>
</section>
<section id="descripción" class="level2">
<h2 class="anchored" data-anchor-id="descripción">Descripción</h2>
<p>Esta recreación captura los elementos icónicos de “La noche estrellada”:</p>
<ul>
<li><strong>Cielo arremolinado</strong>: Espirales que simulan los característicos remolinos de Van Gogh con rotación continua</li>
<li><strong>Estrellas pulsantes</strong>: Animación CSS que hace que las estrellas brillen y pulsen</li>
<li><strong>Luna luminosa</strong>: En la esquina superior derecha con efecto de resplandor</li>
<li><strong>Ciprés oscuro</strong>: El árbol vertical característico en primer plano</li>
<li><strong>Pueblo tranquilo</strong>: Casitas con ventanas iluminadas que titilan</li>
<li><strong>Montañas onduladas</strong>: Al fondo del paisaje</li>
</ul>
<p>La animación añade vida a la escena con espirales rotantes, estrellas que pulsan suavemente y ventanas que parpadean como luces en la noche.</p>
</section>
</main>
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const note = htmlDoc.getElementById(id);
if (note !== null) {
const html = processXRef(id, note);
instance.setContent(html);
}
}).finally(() => {
instance.enable();
instance.show();
});
}
} else {
// See if we can fetch a full url (with no hash to target)
// This is a special case and we should probably do some content thinning / targeting
fetch(url)
.then(res => res.text())
.then(html => {
const parser = new DOMParser();
const htmlDoc = parser.parseFromString(html, "text/html");
const note = htmlDoc.querySelector('main.content');
if (note !== null) {
// This should only happen for chapter cross references
// (since there is no id in the URL)
// remove the first header
if (note.children.length > 0 && note.children[0].tagName === "HEADER") {
note.children[0].remove();
}
const html = processXRef(null, note);
instance.setContent(html);
}
}).finally(() => {
instance.enable();
instance.show();
});
}
}, function(instance) {
});
}
let selectedAnnoteEl;
const selectorForAnnotation = ( cell, annotation) => {
let cellAttr = 'data-code-cell="' + cell + '"';
let lineAttr = 'data-code-annotation="' + annotation + '"';
const selector = 'span[' + cellAttr + '][' + lineAttr + ']';
return selector;
}
const selectCodeLines = (annoteEl) => {
const doc = window.document;
const targetCell = annoteEl.getAttribute("data-target-cell");
const targetAnnotation = annoteEl.getAttribute("data-target-annotation");
const annoteSpan = window.document.querySelector(selectorForAnnotation(targetCell, targetAnnotation));
const lines = annoteSpan.getAttribute("data-code-lines").split(",");
const lineIds = lines.map((line) => {
return targetCell + "-" + line;
})
let top = null;
let height = null;
let parent = null;
if (lineIds.length > 0) {
//compute the position of the single el (top and bottom and make a div)
const el = window.document.getElementById(lineIds[0]);
top = el.offsetTop;
height = el.offsetHeight;
parent = el.parentElement.parentElement;
if (lineIds.length > 1) {
const lastEl = window.document.getElementById(lineIds[lineIds.length - 1]);
const bottom = lastEl.offsetTop + lastEl.offsetHeight;
height = bottom - top;
}
if (top !== null && height !== null && parent !== null) {
// cook up a div (if necessary) and position it
let div = window.document.getElementById("code-annotation-line-highlight");
if (div === null) {
div = window.document.createElement("div");
div.setAttribute("id", "code-annotation-line-highlight");
div.style.position = 'absolute';
parent.appendChild(div);
}
div.style.top = top - 2 + "px";
div.style.height = height + 4 + "px";
div.style.left = 0;
let gutterDiv = window.document.getElementById("code-annotation-line-highlight-gutter");
if (gutterDiv === null) {
gutterDiv = window.document.createElement("div");
gutterDiv.setAttribute("id", "code-annotation-line-highlight-gutter");
gutterDiv.style.position = 'absolute';
const codeCell = window.document.getElementById(targetCell);
const gutter = codeCell.querySelector('.code-annotation-gutter');
gutter.appendChild(gutterDiv);
}
gutterDiv.style.top = top - 2 + "px";
gutterDiv.style.height = height + 4 + "px";
}
selectedAnnoteEl = annoteEl;
}
};
const unselectCodeLines = () => {
const elementsIds = ["code-annotation-line-highlight", "code-annotation-line-highlight-gutter"];
elementsIds.forEach((elId) => {
const div = window.document.getElementById(elId);
if (div) {
div.remove();
}
});
selectedAnnoteEl = undefined;
};
// Handle positioning of the toggle
window.addEventListener(
"resize",
throttle(() => {
elRect = undefined;
if (selectedAnnoteEl) {
selectCodeLines(selectedAnnoteEl);
}
}, 10)
);
function throttle(fn, ms) {
let throttle = false;
let timer;
return (...args) => {
if(!throttle) { // first call gets through
fn.apply(this, args);
throttle = true;
} else { // all the others get throttled
if(timer) clearTimeout(timer); // cancel #2
timer = setTimeout(() => {
fn.apply(this, args);
timer = throttle = false;
}, ms);
}
};
}
// Attach click handler to the DT
const annoteDls = window.document.querySelectorAll('dt[data-target-cell]');
for (const annoteDlNode of annoteDls) {
annoteDlNode.addEventListener('click', (event) => {
const clickedEl = event.target;
if (clickedEl !== selectedAnnoteEl) {
unselectCodeLines();
const activeEl = window.document.querySelector('dt[data-target-cell].code-annotation-active');
if (activeEl) {
activeEl.classList.remove('code-annotation-active');
}
selectCodeLines(clickedEl);
clickedEl.classList.add('code-annotation-active');
} else {
// Unselect the line
unselectCodeLines();
clickedEl.classList.remove('code-annotation-active');
}
});
}
const findCites = (el) => {
const parentEl = el.parentElement;
if (parentEl) {
const cites = parentEl.dataset.cites;
if (cites) {
return {
el,
cites: cites.split(' ')
};
} else {
return findCites(el.parentElement)
}
} else {
return undefined;
}
};
var bibliorefs = window.document.querySelectorAll('a[role="doc-biblioref"]');
for (var i=0; i<bibliorefs.length; i++) {
const ref = bibliorefs[i];
const citeInfo = findCites(ref);
if (citeInfo) {
tippyHover(citeInfo.el, function() {
var popup = window.document.createElement('div');
citeInfo.cites.forEach(function(cite) {
var citeDiv = window.document.createElement('div');
citeDiv.classList.add('hanging-indent');
citeDiv.classList.add('csl-entry');
var biblioDiv = window.document.getElementById('ref-' + cite);
if (biblioDiv) {
citeDiv.innerHTML = biblioDiv.innerHTML;
}
popup.appendChild(citeDiv);
});
return popup.innerHTML;
});
}
}
});
</script>
</div> <!-- /content -->
</body></html>