efedefe535
docs/bocetos/boceto-1..5.svg y su generador tools/bocetos.py: contenedor, la piña sale a la calle, el portal, calle en diagonal y ausencias.
136 lines
7.5 KiB
Python
136 lines
7.5 KiB
Python
# Genera docs/bocetos/boceto-1..5.svg. Monigotes de un solo trazo de spray en zigzag,
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# altos y juntos, en piña: el centro en colores de fuego y alrededor fríos
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# (a la manera del contenedor y las «Ausencias» de Suso33).
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import sys, random, math, os
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OUT = sys.argv[1]
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W, H = 1600, 700
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FUEGO = ["#fffbe6", "#ffe066", "#ffb627", "#ff7b1c", "#f04e23", "#c8102e"] # del centro hacia fuera
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FRIO = ["#5b2a86", "#8e44c9", "#3b5bdb", "#6c7ae0", "#e9e6f5", "#111", "#b07cd8"]
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DEFS = '''<defs>
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<filter id="spray" x="-30%" y="-10%" width="160%" height="120%"><feTurbulence type="fractalNoise" baseFrequency="0.8" numOctaves="2" seed="3" result="t"/><feDisplacementMap in="SourceGraphic" in2="t" scale="2" result="d"/><feGaussianBlur in="d" stdDeviation=".7" result="b"/><feGaussianBlur in="SourceGraphic" stdDeviation="4" result="n"/><feComponentTransfer in="n" result="n2"><feFuncA type="linear" slope=".35"/></feComponentTransfer><feMerge><feMergeNode in="n2"/><feMergeNode in="b"/></feMerge></filter>
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<filter id="brocha" x="-10%" y="-10%" width="120%" height="120%"><feTurbulence type="fractalNoise" baseFrequency="0.02 0.15" numOctaves="3" seed="4" result="t"/><feDisplacementMap in="SourceGraphic" in2="t" scale="6"/></filter>
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<filter id="halo" x="-50%" y="-50%" width="200%" height="200%"><feGaussianBlur stdDeviation="40"/></filter>
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<filter id="sombra"><feGaussianBlur stdDeviation="3"/></filter>
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</defs>'''
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def fuego(d): # d = 0 en el centro de la piña, 1 en el borde
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i = min(len(FUEGO) - 1, int(max(0, d + random.uniform(-.12, .12)) * len(FUEGO)))
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return FUEGO[i]
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def monigote(o, x, y, h, col, lean=0.0, paso=False, brazo=False, sombra=False):
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"""Un trazo: cabeza en zigzag apretado y cuerpo en zigzag alto. (x, y) = pies."""
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sw = max(1.1, h * .011)
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dy = sw * 2.0 # renglones del zigzag
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if sombra:
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o.append(f'<path d="M{x-h*.05:.1f},{y:.1f} L{x+h*.6:.1f},{y+h*.14:.1f} L{x+h*.64:.1f},{y+h*.11:.1f} L{x+h*.05:.1f},{y-2:.1f}Z" fill="#111" opacity=".14" filter="url(#sombra)"/>')
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top = y - h
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pts = []
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yy = top
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i = 0
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while yy <= y:
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t = (yy - top) / h
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cx = x + lean * h * (1 - t)
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if t < .13: # cabeza
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w = h * .05 * math.sin(math.pi * t / .13) ** .6 + sw * .3
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elif t < .16: # cuello
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w = h * .008
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else: # cuerpo: hombros y se afila hacia los pies
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u = (t - .16) / .84
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w = h * (.062 * (1 - u) ** .8 + .014)
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if paso and u > .5: # zancada: el zigzag se abre en dos
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k = (u - .5) / .5
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cx += (-1 if (i // 2) % 2 else 1) * h * .035 * k
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w *= .6
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s = -1 if i % 2 else 1
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pts.append((cx + s * w + random.uniform(-.3, .3) * sw, yy))
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yy += dy * random.uniform(.85, 1.15) * (.55 if t < .13 else 1)
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i += 1
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d = "M" + " L".join(f"{px:.1f},{py:.1f}" for px, py in pts)
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o.append(f'<path d="{d}" fill="none" stroke="{col}" stroke-width="{sw:.1f}" stroke-linejoin="round" stroke-linecap="round" filter="url(#spray)"/>')
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if brazo: # brazo en alto
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bx, by = x + lean * h * .84 + h * .05, top + h * .2
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p, n = [], 10
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for j in range(n):
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t = j / (n - 1)
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p.append((bx + t * h * .06 + (-1 if j % 2 else 1) * h * .012, by - t * h * .30))
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d = "M" + " L".join(f"{px:.1f},{py:.1f}" for px, py in p)
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o.append(f'<path d="{d}" fill="none" stroke="{col}" stroke-width="{sw:.1f}" stroke-linecap="round" filter="url(#spray)"/>')
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def portal(o, x, y, w, h, fondo="#111"):
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o.append(f'<g filter="url(#brocha)"><rect x="{x}" y="{y-h}" width="{w}" height="{h}" fill="{fondo}" opacity=".9"/>'
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f'<path d="M{x-8},{y} L{x-8},{y-h-8} L{x+w+8},{y-h-8} L{x+w+8},{y}" fill="none" stroke="#111" stroke-width="7" stroke-linecap="round"/></g>')
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def svg(cuerpo, fondo="#fff"):
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return (f'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 {W} {H}" width="{W}" height="{H}">{DEFS}'
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f'<rect width="{W}" height="{H}" fill="{fondo}"/>' + "".join(cuerpo) + "</svg>\n")
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def fila(o, xs, y0, h0, centro, radio, frio=FRIO, lean=0.0, jit=12, hvar=.15, paso=.2, brazo=.08):
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"""Una piña: monigotes muy juntos; los cercanos al centro, en fuego."""
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for x in xs:
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d = abs(x - centro) / radio
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col = fuego(d) if d < 1 else random.choice(frio)
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h = h0 * random.uniform(1 - hvar, 1 + hvar) * (1.05 if d < 1 else 1)
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monigote(o, x, y0 + random.uniform(-jit, jit), h, col, lean, random.random() < paso, random.random() < brazo)
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# 1 · Contenedor: piña de fuego en una pared gris, como el contenedor
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def b1():
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random.seed(1); o = []
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o.append('<circle cx="800" cy="400" r="190" fill="#ffb627" opacity=".35" filter="url(#halo)"/>')
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xs = sorted(random.uniform(90, 1510) for _ in range(70))
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fila(o, xs[::2], 610, 470, 800, 260)
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fila(o, xs[1::2], 650, 500, 800, 230)
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return o, "#9aa0a8"
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# 2 · Piña que sale a la calle: en blanco, la masa avanza hacia la derecha
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def b2():
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random.seed(2); o = []
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o.append('<g filter="url(#brocha)"><path d="M40,640 L1560,632" stroke="#111" stroke-width="7" stroke-linecap="round"/></g>')
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xs = sorted(random.gauss(820, 300) for _ in range(55))
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xs = [x for x in xs if 80 < x < 1520]
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fila(o, xs, 630, 400, 1000, 230, lean=.12, paso=.45, brazo=.12)
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return o, "#fff"
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# 3 · El portal: del hueco sale la gente y el fuego va delante
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def b3():
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random.seed(3); o = []
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o.append('<g filter="url(#brocha)"><path d="M40,610 L1560,602" stroke="#111" stroke-width="7" stroke-linecap="round"/></g>')
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portal(o, 150, 610, 190, 380)
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o.append('<circle cx="330" cy="430" r="130" fill="#ffb627" opacity=".35" filter="url(#halo)"/>')
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for i in range(30):
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t = i / 29
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x = 250 + t * 1250 + random.uniform(-25, 25)
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d = abs(t - .32) / .25
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col = fuego(d) if d < 1 else random.choice(FRIO)
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monigote(o, x, 610 + t * 70 + random.uniform(-8, 8), 300 + t * 120, col, .1, random.random() < .45, random.random() < .12)
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return o, "#fff"
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# 4 · Calle en diagonal: la piña baja por la calle hacia quien mira
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def b4():
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random.seed(4); o = []
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o.append('<g filter="url(#brocha)"><path d="M40,690 L1180,300" stroke="#111" stroke-width="9" stroke-linecap="round"/>'
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'<path d="M330,700 L1260,305" stroke="#f04e23" stroke-width="3" stroke-linecap="round" opacity=".9"/></g>')
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ps = []
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for _ in range(1500):
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t = random.random()
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x = 1240 - t * 700 + random.gauss(0, 40 + t * 150)
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y = 300 + t * 390 + random.gauss(0, 10)
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if 290 < y < 695 and all(math.hypot(x - a, (y - b) * 3) > 22 + t * 50 for a, b, _ in ps):
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ps.append((x, y, t))
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for x, y, t in sorted(ps, key=lambda p: p[1]):
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d = math.hypot(x - 820, (y - 520) * 1.5) / 230
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col = fuego(d) if d < 1 else random.choice(FRIO)
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monigote(o, x, y, 60 + t * 230, col, -.1, random.random() < .35, random.random() < .1)
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return o, "#fff"
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# 5 · Ausencias: todos en negro y gris, y solo el corazón de la piña en fuego
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def b5():
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random.seed(5); o = []
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xs = sorted(random.uniform(100, 1500) for _ in range(42))
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fila(o, xs, 650, 430, 900, 120, frio=["#111", "#111", "#333", "#555", "#888"], lean=.06, hvar=.12, paso=.3, brazo=.1)
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return o, "#fff"
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os.makedirs(OUT, exist_ok=True)
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for n, f in enumerate([b1, b2, b3, b4, b5], 1):
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cuerpo, fondo = f()
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open(f"{OUT}/boceto-{n}.svg", "w").write(svg(cuerpo, fondo))
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