# Genera sites/<web>/img/eje-*.svg: un símbolo por eje pintado con spray (relleno en zigzag,
# trazos con pulso y chorreones), en el color de cada eje (los mismos que los regueros del dibujo).
import sys, random, math, os
OUT = sys.argv[1]
EJES = {"hogar": "#f04e23", "clima": "#14965a", "fronteras": "#f2b705", "pueblos": "#3b5bdb", "igualdad": "#8e44c9"}
DEFS = ('<defs><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="1.6" result="d"/><feGaussianBlur in="d" stdDeviation=".4" result="b"/>'
        '<feGaussianBlur in="SourceGraphic" stdDeviation="2.5" result="n"/><feComponentTransfer in="n" result="n2"><feFuncA type="linear" slope=".3"/></feComponentTransfer>'
        '<feMerge><feMergeNode in="n2"/><feMergeNode in="b"/></feMerge></filter></defs>')

def monigote(o, x, y, h, col, brazo=False, paso=False):
    sw = max(1.4, h * .016)
    pts, yy, i, top = [], y - h, 0, y - h
    while yy <= y:
        t = (yy - top) / h
        cx = x
        if t < .13:
            w = h * .055 * math.sin(math.pi * t / .13) ** .6 + sw * .3
        elif t < .16:
            w = h * .01
        else:
            u = (t - .16) / .84
            w = h * (.07 * (1 - u) ** .8 + .016)
            if paso and u > .5:
                cx += (-1 if (i // 2) % 2 else 1) * h * .04 * (u - .5) / .5
                w *= .6
        pts.append((cx + (-1 if i % 2 else 1) * w * random.uniform(.75, 1.25), yy))
        yy += sw * 2.1 * random.uniform(.85, 1.15) * (.55 if t < .13 else 1)
        i += 1
    d = "M" + " L".join(f"{px:.1f},{py:.1f}" for px, py in pts)
    o.append(f'<path d="{d}" fill="none" stroke="{col}" stroke-width="{sw:.1f}" stroke-linejoin="round" stroke-linecap="round" filter="url(#spray)"/>')
    if brazo:
        bx, by = x + h * .06, top + h * .2
        p = [(bx + j / 9 * h * .06 + (-1 if j % 2 else 1) * h * .014, by - j / 9 * h * .3) for j in range(10)]
        o.append(f'<path d="M' + " L".join(f"{px:.1f},{py:.1f}" for px, py in p) + f'" fill="none" stroke="{col}" stroke-width="{sw:.1f}" stroke-linecap="round" filter="url(#spray)"/>')

def j(v, a):
    return v + random.uniform(-a, a)

def relleno(o, poly, col, paso=2.6, sw=3.6):
    # Zigzag horizontal que rellena un polígono convexo, como una pasada de spray.
    ys = [y for _, y in poly]
    pts, y, i = [], min(ys) + sw * .4, 0
    while y <= max(ys) - sw * .4:
        xs = []
        for (x1, y1), (x2, y2) in zip(poly, poly[1:] + poly[:1]):
            if (y1 <= y < y2) or (y2 <= y < y1):
                xs.append(x1 + (y - y1) * (x2 - x1) / (y2 - y1))
        if len(xs) >= 2:
            a, b = min(xs), max(xs)
            pts.append((j(a if i % 2 else b, 1.2), y))
            i += 1
        y += paso * random.uniform(.85, 1.15)
    o.append(f'<path d="M{" L".join(f"{x:.1f},{y:.1f}" for x, y in pts)}" fill="none" stroke="{col}" stroke-width="{sw:.1f}" stroke-linejoin="round" stroke-linecap="round" filter="url(#spray)"/>')

def linea(o, pts, col, sw=5):
    # Trazo con pulso: dos pasadas ligeramente desplazadas.
    for k in range(2):
        d = "M" + " L".join(f"{j(x, 1.1):.1f},{j(y, 1.1):.1f}" for x, y in pts)
        o.append(f'<path d="{d}" fill="none" stroke="{col}" stroke-width="{sw * (1 if k == 0 else .6):.1f}" stroke-linejoin="round" stroke-linecap="round" opacity="{1 if k == 0 else .7}" filter="url(#spray)"/>')

def chorreon(o, x, y, largo, col):
    y -= 6
    o.append(f'<path d="M{x:.1f},{y:.1f} L{j(x, .6):.1f},{y + largo:.1f}" stroke="{col}" stroke-width="2.4" stroke-linecap="round" filter="url(#spray)"/>')
    o.append(f'<circle cx="{x:.1f}" cy="{y + largo:.1f}" r="2.2" fill="{col}" filter="url(#spray)"/>')

def hogar(o, col):
    # Una casa: tejado, dos muros y el dintel; la puerta queda en blanco.
    relleno(o, [(70, 22), (128, 72), (12, 72)], col)
    relleno(o, [(24, 72), (54, 72), (54, 150), (24, 150)], col)
    relleno(o, [(86, 72), (116, 72), (116, 150), (86, 150)], col)
    relleno(o, [(54, 72), (86, 72), (86, 96), (54, 96)], col)
    linea(o, [(98, 50), (98, 26), (110, 26), (110, 60)], col, 5)
    for x, l in ((30, 22), (47, 14), (92, 28), (110, 16)):
        chorreon(o, x, 150, l, col)

def clima(o, col):
    # El planeta que se derrite: anillo en zigzag, meridianos y chorreones.
    cx, cy, r, pts = 70, 72, 52, []
    for i in range(220):
        a = 2 * math.pi * i / 219
        rr = r - (0 if i % 2 else 11) + random.uniform(-1.5, 1.5)
        pts.append((cx + rr * math.cos(a), cy + rr * math.sin(a)))
    o.append(f'<path d="M{" L".join(f"{x:.1f},{y:.1f}" for x, y in pts)}" fill="none" stroke="{col}" stroke-width="3.2" stroke-linejoin="round" filter="url(#spray)"/>')
    linea(o, [(cx + 44 * math.cos(math.pi * k / 20), cy + 44 * math.sin(math.pi * k / 20) * .32) for k in range(21)], col, 4)
    linea(o, [(cx + 44 * math.cos(math.pi * k / 20) * .38, cy - 44 * math.sin(math.pi * k / 20)) for k in range(-10, 11)], col, 4)
    for x, l in ((40, 26), (55, 40), (72, 30), (88, 44), (102, 20)):
        y0 = cy + math.sqrt(max(0, r * r - (x - cx) ** 2)) - 4
        chorreon(o, x, y0, l, col)

def fronteras(o, col):
    # Una valla rota: barrotes que se abren en el centro y alambre de espino cortado.
    for x in (14, 32, 108, 126):
        linea(o, [(x, 40), (x, 150)], col, 6)
    linea(o, [(50, 150), (52, 100), (40, 56)], col, 6)
    linea(o, [(90, 150), (88, 100), (100, 56)], col, 6)
    linea(o, [(6, 62), (44, 66)], col, 5)
    linea(o, [(96, 66), (134, 62)], col, 5)
    linea(o, [(6, 112), (54, 114)], col, 5)
    linea(o, [(86, 114), (134, 112)], col, 5)
    for x, y in ((22, 64), (116, 64), (22, 113), (118, 113)):
        linea(o, [(x - 4, y - 4), (x + 4, y + 4)], col, 4)
        linea(o, [(x + 4, y - 4), (x - 4, y + 4)], col, 4)

def igualdad(o, col):
    # El signo igual, en dos barras de spray con chorreones.
    relleno(o, [(14, 50), (126, 46), (126, 76), (14, 80)], col)
    relleno(o, [(14, 100), (126, 96), (126, 126), (14, 130)], col)
    for x, y, l in ((30, 79, 14), (100, 75, 10), (46, 129, 22), (112, 126, 14)):
        chorreon(o, x, y, l, col)

def eslabon(o, cx, cy, ang, col, roto=False):
    # Un eslabón: óvalo a pulso; el roto se abre por un extremo.
    ca, sa, pts = math.cos(ang), math.sin(ang), []
    for k in range(29 if roto else 37):
        t = 2 * math.pi * (k / 36 + (.12 if roto else 0))
        x, y = 19 * math.cos(t), 11 * math.sin(t)
        pts.append((cx + x * ca - y * sa, cy + x * sa + y * ca))
    linea(o, pts, col, 7)

def pueblos(o, col):
    # Una cadena rota: dos tramos enlazados que se abren en el centro, con chispas en el corte.
    eslabon(o, 20, 118, -.3, col)
    eslabon(o, 48, 108, -.3, col, roto=True)
    eslabon(o, 92, 108, .3 + math.pi, col, roto=True)
    eslabon(o, 120, 118, .3, col)
    for a in (-2.5, -2.0, -1.57, -1.14, -.64):
        linea(o, [(70 + 16 * math.cos(a), 96 + 16 * math.sin(a)), (70 + 36 * math.cos(a), 96 + 36 * math.sin(a))], col, 5)

os.makedirs(OUT, exist_ok=True)
for n, (nombre, col) in enumerate(EJES.items()):
    random.seed(40 + n)
    o = []
    globals()[nombre](o, col)
    open(f"{OUT}/eje-{nombre}.svg", "w").write(f'<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 140 170" width="140" height="170">{DEFS}' + "".join(o) + "</svg>\n")