365 lines
14 KiB
Python
365 lines
14 KiB
Python
#!/usr/bin/env python3
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# coding=utf-8
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"""
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Genere le schema explicatif des parametres de l'extension.
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python docs/schema_parametres.py # les deux versions
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python docs/schema_parametres.py fr # docs/parametres.svg + .png (README)
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python docs/schema_parametres.py en # docs/parameters_en.svg
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# + images/parameters_en.png (onglet
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# « Help » de la boite de dialogue)
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Les formes sont calculees par voronoi_core (memes fonctions que l'extension),
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le schema reste donc fidele au resultat reel. L'export PNG passe par
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inkscape.com, qui attend la fin de l'export (contrairement au raccourci
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Chocolatey « inkscape »).
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"""
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import math
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import os
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import subprocess
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import sys
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HERE = os.path.dirname(os.path.abspath(__file__))
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ROOT = os.path.dirname(HERE)
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sys.path.insert(0, ROOT)
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import voronoi_core # noqa: E402
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W, H = 1400, 1280 # 4 panneaux de 700 x 640
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INK = "#343a40" # element principal
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GHOST = "#dde1e5" # elements secondaires / voisins
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DIM = "#d9480f" # cotes
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DIM2 = "#1971c2" # cotes secondaires
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EDGE = "#212529" # contour des formes
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FONT = "font-family:Arial,Helvetica,sans-serif"
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INKSCAPE = [r"C:\Program Files\Inkscape\bin\inkscape.com", "/usr/bin/inkscape",
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"/Applications/Inkscape.app/Contents/MacOS/inkscape"]
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# Version par langue : textes, fichiers produits, largeur du PNG et agrandissement
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# des textes (la version anglaise est affichee reduite dans la boite de dialogue :
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# 900 px de large, textes x 1.25 pour rester lisibles).
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VERSIONS = {
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"fr": {
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"svg": os.path.join(HERE, "parametres.svg"),
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"png": os.path.join(HERE, "parametres.png"),
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"png_width": 1400,
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"font_scale": 1.0,
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"text": {
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"title1": "Taille des cellules",
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"size": "taille",
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"note1": ["Distance moyenne entre deux germes voisins ; chaque cellule",
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"regroupe les points plus proches de son germe que des autres."],
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"title2": "Largeur du filet",
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"width": "largeur",
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"note2": ["Écart constant entre deux cellules voisines. Le filet",
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"produit est la forme percée par les cellules."],
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"title3": "Filet sur le contour",
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"with": "coché",
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"without": "décoché",
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"frame": "largeur",
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"note3": ["Coché : un cadre de la largeur du filet borde la forme.",
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"Décoché : les cellules touchent le bord."],
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"title4": "Disposition et arrondi",
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"poisson": ["Aléatoire", "homogène"],
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"random": ["Aléatoire", "pur"],
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"hexagonal": ["Hexagonale", "irrégularité 0 %"],
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"rounded": ["Arrondi", "60 %"],
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"note4": ["La graine aléatoire donne un autre motif",
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"avec les mêmes réglages."],
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},
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},
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"en": {
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"svg": os.path.join(HERE, "parameters_en.svg"),
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"png": os.path.join(ROOT, "images", "parameters_en.png"),
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"png_width": 900,
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"font_scale": 1.25,
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"text": {
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"title1": "Cell size",
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"size": "size",
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"note1": ["Average distance between neighbouring seeds;",
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"a cell holds the points closest to its seed."],
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"title2": "Net width",
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"width": "width",
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"note2": ["Constant gap between neighbouring cells.",
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"The net is the shape pierced by the cells."],
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"title3": "Net along the outline",
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"with": "checked",
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"without": "unchecked",
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"frame": "width",
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"note3": ["Checked: a frame as wide as the net.",
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"Unchecked: cells touch the edge."],
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"title4": "Layout and roundness",
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"poisson": ["Even", "random"],
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"random": ["Pure", "random"],
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"hexagonal": ["Hexagonal", "0 %"],
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"rounded": ["Roundness", "60 %"],
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"note4": ["The random seed gives another",
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"pattern with the same settings."],
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},
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},
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}
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def _unit(angle):
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"""Vecteur unitaire, angle en degres, sens anti-horaire a l'ecran (y vers le bas)."""
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a = math.radians(angle)
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return math.cos(a), -math.sin(a)
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out = []
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T = {}
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FS = 1.0
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def fmt(v):
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return "{:.2f}".format(v).rstrip("0").rstrip(".")
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def pts(polyline):
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return " ".join("{},{}".format(fmt(x), fmt(y)) for x, y in polyline)
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def polyline(points, color, width, extra=""):
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out.append('<polyline points="{}" fill="none" stroke="{}" stroke-width="{}" '
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'stroke-linejoin="miter" {}/>'.format(pts(points), color, fmt(width), extra))
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def motif(polylines, color, width):
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for pl in polylines:
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polyline(pl, color, width)
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def text(x, y, s, size=17, color=INK, anchor="start", weight="normal", halo=True):
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style = "{};font-size:{}px;font-weight:{};fill:{}".format(
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FONT, fmt(size * FS), weight, color)
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if halo:
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style += ";paint-order:stroke;stroke:#ffffff;stroke-width:5px;stroke-linejoin:round"
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out.append('<text x="{}" y="{}" text-anchor="{}" style="{}">{}</text>'.format(
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fmt(x), fmt(y), anchor, style, s))
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def note(x, y, lines):
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"""Legende de bas de panneau, derniere ligne sur la ligne de base `y`."""
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step = 22 * FS
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for k, line in enumerate(lines):
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text(x, y - (len(lines) - 1 - k) * step, line, size=16, halo=False)
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def arrow_head(tip, direction, color, size=9):
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ux, uy = direction
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nx, ny = -uy, ux
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base = (tip[0] - size * ux, tip[1] - size * uy)
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out.append('<polygon points="{}" fill="{}"/>'.format(pts([
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tip, (base[0] + 0.45 * size * nx, base[1] + 0.45 * size * ny),
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(base[0] - 0.45 * size * nx, base[1] - 0.45 * size * ny)]), color))
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def dimension(p, q, offset, label, color=DIM, label_pos=0.5, label_shift=18, size=17):
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"""Cote entre p et q, decalee de `offset` perpendiculairement."""
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dx, dy = q[0] - p[0], q[1] - p[1]
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length = math.hypot(dx, dy)
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ux, uy = dx / length, dy / length
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nx, ny = -uy, ux
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a = (p[0] + offset * nx, p[1] + offset * ny)
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b = (q[0] + offset * nx, q[1] + offset * ny)
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sign = 1 if offset >= 0 else -1
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for base, end in ((p, a), (q, b)):
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polyline([(base[0] + sign * 4 * nx, base[1] + sign * 4 * ny),
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(end[0] + sign * 6 * nx, end[1] + sign * 6 * ny)], color, 1,
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'stroke-dasharray="3,3"')
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polyline([a, b], color, 1.6)
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arrow_head(a, (-ux, -uy), color)
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arrow_head(b, (ux, uy), color)
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lx = a[0] + label_pos * (b[0] - a[0]) + sign * label_shift * FS * nx
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ly = a[1] + label_pos * (b[1] - a[1]) + sign * label_shift * FS * ny + 6 * FS
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text(lx, ly, label, size=size, color=color, anchor="middle", weight="bold")
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def arc(center, radius, a0, a1, color, label=None, label_radius=None, size=16):
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"""Arc de a0 a a1 degres (sens anti-horaire a l'ecran), fleche au bout."""
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steps = 40
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points = []
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for k in range(steps + 1):
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ux, uy = _unit(a0 + (a1 - a0) * k / steps)
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points.append((center[0] + radius * ux, center[1] + radius * uy))
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polyline(points[:-2], color, 1.6)
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last, before = points[-1], points[-3]
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d = math.hypot(last[0] - before[0], last[1] - before[1])
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arrow_head(last, ((last[0] - before[0]) / d, (last[1] - before[1]) / d), color, 8)
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if label:
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ux, uy = _unit((a0 + a1) / 2)
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r = label_radius or radius + 24
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text(center[0] + r * ux, center[1] + r * uy + 6 * FS, label, size=size,
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color=color, anchor="middle", weight="bold")
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def circle_ring(cx, cy, r, n=180):
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return [(cx + r * math.cos(2 * math.pi * k / n), cy + r * math.sin(2 * math.pi * k / n))
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for k in range(n)]
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def panel_title(x, y, number, title):
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text(x, y, "{} {}".format(number, title), size=22, weight="bold", halo=False)
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# --------------------------------------------------------------------------
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# Panneaux : un par parametre (ou groupe de parametres), numerotes 1 a 4.
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# Les cellules sont calculees par voronoi_core, en pixels du schema.
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# --------------------------------------------------------------------------
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NET = "#495057" # filet
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CELL = "#ffffff" # cellules
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def region(rings, fill, stroke="none", width=0):
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out.append('<path d="{}" fill="{}" fill-rule="evenodd" stroke="{}" '
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'stroke-width="{}" stroke-linejoin="round"/>'.format(
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voronoi_core.rings_to_d(rings, 2), fill, stroke, fmt(width)))
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def dot(p, r=4.5, color=INK):
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out.append('<circle cx="{}" cy="{}" r="{}" fill="{}"/>'.format(
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fmt(p[0]), fmt(p[1]), fmt(r), color))
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def filled(shape, cell_size, net_width, **options):
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"""Filet plein + contour de la forme, comme le produit l'extension."""
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cells = voronoi_core.fill_shape(shape, cell_size, net_width, **options)
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region(voronoi_core.net_rings(shape, cells), NET)
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region(shape, "none", EDGE, 1.5)
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return cells
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def nearest_pair(points, center):
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"""Deux germes voisins (les plus proches l'un de l'autre) pres du centre."""
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best = None
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for k, p in enumerate(points):
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if math.hypot(p[0] - center[0], p[1] - center[1]) > 120:
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continue
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for q in points[k + 1:]:
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d = math.hypot(p[0] - q[0], p[1] - q[1])
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if best is None or d < best[0]:
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best = (d, p, q)
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return best[1], best[2]
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def panel_1():
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panel_title(30, 50, 1, T["title1"])
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box = [(60, 90), (640, 90), (640, 520), (60, 520)]
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points = voronoi_core.make_points("poisson", (0, 40, 700, 570), 95, seed=3)
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cells = voronoi_core.voronoi_cells(points, (-100, -60, 800, 670))
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for cell in cells:
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piece = voronoi_core.clip_convex([box], cell)
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if piece:
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region(piece, "none", "#adb5bd", 1.4)
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region([box], "none", EDGE, 1.5)
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for p in points:
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if 60 < p[0] < 640 and 90 < p[1] < 520:
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dot(p)
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p, q = nearest_pair(points, (350, 300))
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dimension(p, q, 0, T["size"], label_shift=20)
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note(30, 610, T["note1"])
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def panel_2():
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panel_title(730, 50, 2, T["title2"])
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box = [(760, 90), (1340, 90), (1340, 520), (760, 520)]
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shape = [box]
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net = 24
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filled(shape, 150, net, distribution="hexagonal", irregularity=45, seed=2)
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# Cote a travers le brin qui separe deux cellules voisines.
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points = voronoi_core.make_points("hexagonal", (760 - 150, 90 - 150, 1340 + 150, 520 + 150),
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150, 45, 2)
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p, q = nearest_pair(points, (1050, 300))
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ux, uy = (q[0] - p[0]) / math.hypot(q[0] - p[0], q[1] - p[1]), \
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(q[1] - p[1]) / math.hypot(q[0] - p[0], q[1] - p[1])
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m = ((p[0] + q[0]) / 2, (p[1] + q[1]) / 2)
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a = (m[0] - ux * (net / 2 + 34), m[1] - uy * (net / 2 + 34))
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b = (m[0] - ux * net / 2, m[1] - uy * net / 2)
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c = (m[0] + ux * net / 2, m[1] + uy * net / 2)
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d = (m[0] + ux * (net / 2 + 34), m[1] + uy * (net / 2 + 34))
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polyline([a, b], DIM, 1.8)
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polyline([d, c], DIM, 1.8)
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arrow_head(b, (ux, uy), DIM)
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arrow_head(c, (-ux, -uy), DIM)
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text(d[0] + 12, d[1] + 6, T["width"], size=17, color=DIM, weight="bold")
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note(730, 610, T["note2"])
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def panel_3():
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panel_title(30, 690, 3, T["title3"])
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net = 14
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for cx, border, label in ((180, True, T["with"]), (520, False, T["without"])):
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shape = [circle_ring(cx, 925, 152, 240)]
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filled(shape, 66, net, seed=4, border=border)
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text(cx, 1135, label, size=18, anchor="middle", weight="bold", halo=False)
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# Cote du cadre, sur le cercle de gauche
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dimension((180 + 152 - net, 925), (180 + 152, 925), -167, T["frame"], color=DIM2,
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label_shift=22)
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note(30, 1250, T["note3"])
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def panel_4():
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panel_title(730, 690, 4, T["title4"])
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tiles = (("poisson", 0, T["poisson"]), ("random", 0, T["random"]),
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("hexagonal", 0, T["hexagonal"]), ("poisson", 0.6, T["rounded"]))
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for k, (distribution, roundness, label) in enumerate(tiles):
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x = 745 + k * 160
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box = [(x, 740), (x + 140, 740), (x + 140, 1060), (x, 1060)]
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filled([box], 40, 5, distribution=distribution, irregularity=0, seed=6,
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roundness=roundness)
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for m, line in enumerate(label):
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text(x + 70, 1092 + m * 21 * FS, line, size=15, anchor="middle", halo=False)
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note(730, 1250, T["note4"])
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def export_png(svg_path, png_path, width):
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exe = next((path for path in INKSCAPE if os.path.exists(path)), None)
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if exe is None:
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print("Inkscape introuvable : exporter {} a la main".format(svg_path))
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return
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os.makedirs(os.path.dirname(png_path), exist_ok=True)
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subprocess.run([exe, svg_path, "--export-type=png",
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"--export-width={}".format(width),
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"--export-filename={}".format(png_path)],
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check=True, stderr=subprocess.DEVNULL)
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print(png_path)
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def build(language):
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global FS
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version = VERSIONS[language]
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out.clear()
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T.clear()
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T.update(version["text"])
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FS = version["font_scale"]
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out.append('<rect width="{}" height="{}" fill="#ffffff"/>'.format(W, H))
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for x1, y1, x2, y2 in ((700, 20, 700, H - 20), (20, 640, W - 20, 640)):
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out.append('<line x1="{}" y1="{}" x2="{}" y2="{}" stroke="#dee2e6" '
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'stroke-width="1.5"/>'.format(x1, y1, x2, y2))
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panel_1()
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panel_2()
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panel_3()
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panel_4()
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svg = ('<?xml version="1.0" encoding="UTF-8"?>\n'
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'<svg xmlns="http://www.w3.org/2000/svg" width="{0}" height="{1}" '
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'viewBox="0 0 {0} {1}">\n{2}\n</svg>\n').format(W, H, "\n".join(out))
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with open(version["svg"], "w", encoding="utf-8", newline="\n") as handle:
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handle.write(svg)
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print(version["svg"])
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export_png(version["svg"], version["png"], version["png_width"])
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def main(argv):
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languages = argv or sorted(VERSIONS)
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for language in languages:
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build(language)
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if __name__ == "__main__":
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main(sys.argv[1:])
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