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