Use richer Sky and Telescope trace for Libra

tools/build_constellations.py

@@ -15,6 +15,10 @@ STELLARIUM_URL = (
     "https://raw.githubusercontent.com/Stellarium/stellarium/master/"
     "skycultures/modern/index.json"
 )
+STELLARIUM_ST_URL = (
+    "https://raw.githubusercontent.com/Stellarium/stellarium/master/"
+    "skycultures/modern_st/index.json"
+)
 D3_BASE = "https://raw.githubusercontent.com/ofrohn/d3-celestial/master/data/"
 OUT = Path(__file__).resolve().parent.parent / "plugin/contents/ui/constellations.js"
 
@@ -33,8 +37,14 @@ ZODIAC = {
     "Psc": "Peixes",
 }
 
-LICENSE = """Constellation lines: Stellarium Modern sky culture, CC BY-SA 4.0.
+# Avaliados signo a signo. S&T costuma usar traçados mais ricos e próximos
+# aos mapas populares, enquanto a arte continua vindo do conjunto Modern.
+LINE_OVERRIDES = {"Lib": "modern_st"}
+
+LICENSE = """Constellation lines: Stellarium Modern and Modern (S&T) sky cultures,
+CC BY-SA 4.0.
 https://github.com/Stellarium/stellarium/tree/master/skycultures/modern
+https://github.com/Stellarium/stellarium/tree/master/skycultures/modern_st
 
 Hipparcos J2000 coordinates: d3-celestial.
 Copyright (c) 2015, Olaf Frohn
@@ -68,6 +78,10 @@ def rounded_point(point: list[float]) -> list[float]:
 
 def main() -> None:
     sky_culture = fetch(STELLARIUM_URL)
+    sky_culture_st = fetch(STELLARIUM_ST_URL)
+    st_constellations = {
+        item["id"].split()[-1]: item for item in sky_culture_st["constellations"]
+    }
     star_data = fetch(D3_BASE + "stars.8.json")["features"]
     name_data = fetch(D3_BASE + "constellations.json")["features"]
     stars = {
@@ -87,8 +101,11 @@ def main() -> None:
         ident = constellation["id"].split()[-1]
         if ident not in ZODIAC:
             continue
+        line_source = (st_constellations[ident]
+                       if LINE_OVERRIDES.get(ident) == "modern_st"
+                       else constellation)
         lines = []
-        for hip_line in constellation.get("lines", []):
+        for hip_line in line_source.get("lines", []):
             missing = [hip for hip in hip_line if hip not in stars]
             if missing:
                 raise RuntimeError(f"{ident}: HIP ausente no catálogo: {missing}")
@@ -123,7 +140,7 @@ def main() -> None:
     )
     OUT.write_text(
         "/* Gerado por tools/build_constellations.py.\n"
-        "   Stellarium Modern constellation lines, coordenadas Hipparcos J2000.\n\n"
+        "   Stellarium Modern/S&T constellation lines, coordenadas Hipparcos J2000.\n\n"
         + "\n".join(("   " + line) if line else "" for line in LICENSE.rstrip().splitlines())
         + " */\nconst CONSTELLATIONS=" + payload + ";\n",
         encoding="utf-8",