Translate code, comments and logs to English; English README; configurable paths and env varsHEADmain

Identifiers, docstrings, comments and console messages are now in English.
Narration, subtitles and on-screen text stay in Spanish (they are the video
content). The Blender <-> Godot physics protocol uses English keys and body
prefixes chosen to keep the original creation order, so cached simulations and
renders stay bit-identical. The old Spanish environment variable names are still
accepted.

1 files changed, 16 insertions, 16 deletions

diff --git a/scripts/build_blender.py b/scripts/build_blender.py
index 41731cf..1a80d97 100644
--- a/scripts/build_blender.py
+++ b/scripts/build_blender.py
@@ -1,10 +1,10 @@
 # -*- coding: utf-8 -*-
-"""Arma el video final de las escenas hechas en Blender.
+"""Builds the final video of the scenes made in Blender.
 
-Compone en una sola pasada de ffmpeg:
-    fondo punteado  +  secuencia PNG con alfa (3D)  +  overlay de Manim  +  audio
-El overlay trae chip, barra de progreso y subtitulos, o sea que el estilo sale
-del mismo codigo que los videos de Manim.
+Composites in a single ffmpeg pass:
+    dotted background  +  PNG sequence with alpha (3D)  +  Manim overlay  +  audio
+The overlay carries the chip, progress bar and subtitles, so the style comes
+from the same code as the Manim videos.
 """
 import glob, os, subprocess, sys
 
@@ -15,23 +15,23 @@ import build_video
 FPS = 30
 
 
-def componer(name, con_musica=True):
-    fondo = os.path.join(ROOT, "media", "images", "overlay", "fondo.png")
-    carpeta = os.path.join(ROOT, "render", name)
-    seq = os.path.join(carpeta, "f%04d.png")
+def compose(name, add_music=True):
+    background = os.path.join(ROOT, "media", "images", "overlay", "fondo.png")
+    folder = os.path.join(ROOT, "render", name)
+    seq = os.path.join(folder, "f%04d.png")
     overlay = os.path.join(ROOT, "media", "videos", "overlay", "1920p30", f"{name}.mov")
-    for p in (fondo, overlay):
+    for p in (background, overlay):
         if not os.path.exists(p):
-            raise SystemExit(f"falta {p}")
-    n = len(glob.glob(os.path.join(carpeta, "f*.png")))
+            raise SystemExit(f"missing {p}")
+    n = len(glob.glob(os.path.join(folder, "f*.png")))
     if n < 30:
-        raise SystemExit(f"[{name}] solo hay {n} frames renderizados")
+        raise SystemExit(f"[{name}] only {n} frames rendered")
 
-    wav = build_video.build_track(name, con_musica)
+    wav = build_video.build_track(name, add_music)
     out = os.path.join(ROOT, "out", f"{name}.mp4")
     cmd = [
         "ffmpeg", "-v", "error", "-y",
-        "-loop", "1", "-framerate", str(FPS), "-i", fondo,
+        "-loop", "1", "-framerate", str(FPS), "-i", background,
         "-framerate", str(FPS), "-start_number", "1", "-i", seq,
         "-i", overlay,
         "-i", wav,
@@ -55,4 +55,4 @@ def componer(name, con_musica=True):
 
 if __name__ == "__main__":
     for n in (sys.argv[1:] or ["bolapeluda", "caos", "diferencial"]):
-        componer(n)
+        compose(n)