compute glyphs in parallel

selectric_generator.py

@@ -1,6 +1,7 @@
 import pymeshlab as ml
 import os
 import subprocess
+import concurrent.futures
 
 from glyph_tables import typeball
 
@@ -23,24 +24,38 @@
     if not os.path.exists("ballparts"):
         os.mkdir("ballparts")
 
+    glyphs = []
     # Process each glyph in sequence
-    for case, hemisphere in enumerate(typeball):
-        for row, line in enumerate(hemisphere):
-            for column, glyph in enumerate(line):
-                # Skip this entry if no glyph is provided; otherwise, make an STL with OpenSCAD
-                if glyph=="": continue
-                filename = f"ballparts/{row}-{column}-{case}.STL"
-                # Generate an extruded letter using OpenSCAD
-                # Pass the glyph's unicode codepoint(s) instead of the glyph itself, which I hope makes this more cross-compatible
-                codepoints = [ord(x) for x in glyph]
-                codepoints = str(codepoints).replace(" ","")
-                cmd = f"\"{PATH_TO_OPENSCAD}\" -o \"{filename}\" -D codepoints={codepoints} -D row={row} -D column={column} -D case={case} oneletter.scad"
-                print(f"Generating glyph {glyph}...")
-                subprocess.run(cmd)
-                mainMeshSet.load_new_mesh(filename)
-                mainMeshSet.generate_by_merging_visible_meshes()
-                mainMeshSet.save_current_mesh("ballparts/textForTypeball.STL")
-                print(f"Glyph {glyph} complete.")
+    with concurrent.futures.ThreadPoolExecutor() as executor:
+        for case, hemisphere in enumerate(typeball):
+            for row, line in enumerate(hemisphere):
+                for column, glyph in enumerate(line):
+                    # Skip this entry if no glyph is provided; otherwise, make an STL with OpenSCAD
+                    if glyph=="": continue
+                    filename = f"ballparts/{row}-{column}-{case}.STL"
+                    # Generate an extruded letter using OpenSCAD
+                    # Pass the glyph's unicode codepoint(s) instead of the glyph itself, which I hope makes this more cross-compatible
+                    codepoints = [ord(x) for x in glyph]
+                    codepoints = str(codepoints).replace(" ","")
+                    cmd = f"\"{PATH_TO_OPENSCAD}\" -o \"{filename}\" -D codepoints={codepoints} -D row={row} -D column={column} -D case={case} oneletter.scad"
+                    print(f"Generating glyph {glyph}...")
+                    future = executor.submit(subprocess.run, cmd, shell=True)
+                    glyphs.append({
+                        "filename": filename,
+                        "task": future,
+                        "glyph": glyph
+                    })
+
+
+    for glyph in glyphs:
+        while not glyph["task"].done():
+            print("waiting...")
+
+        mainMeshSet.load_new_mesh(glyph["filename"])
+        mainMeshSet.generate_by_merging_visible_meshes()
+        mainMeshSet.save_current_mesh("ballparts/textForTypeball.STL")
+        symbol = glyph["glyph"]
+        print(f"Glyph {symbol} complete.")
 
     # Once all glyphs are processed, put them onto the typeball body
     print("Attaching glyphs to typeball body...")