ex-nerd · December 21, 2018 07:14 · Dec 21, 2018 · Dec 21, 2018 · Dec 21, 2018 · Dec 21, 2018
diff --git a/render_puzzle_boxes.py b/render_puzzle_boxes.py
@@ -17,7 +17,7 @@
 diameter = 25
 
 # Number of processor threads to use (probably don't touch this)
-NUM_THREADS = 2
+NUM_THREADS = 3
 
 #################################################################################
 # Don't touch below this line
@@ -55,9 +55,9 @@ def get_and_render(url, fname):
         for chunk in response.iter_content(1024):
             scad.write(chunk)
 
-    scad_file = ""
-    stl_file = ""
-    cmd = [openscad(), "-o", f"{fname}.stl", f"{fname}.scad"]
+    scad_file = f"{fname}.scad"
+    stl_file = f"{fname}.stl"
+    cmd = [openscad(), "-o", stl_file, scad_file]
     # print(cmd)
     subprocess.run(cmd)
     return stl_file

diff --git a/render_puzzle_boxes.py b/render_puzzle_boxes.py
@@ -16,7 +16,7 @@
 # Diameter in mm of inner maze tube
 diameter = 25
 
-# Number of processor threads to use (probably don't touch this
+# Number of processor threads to use (probably don't touch this)
 NUM_THREADS = 2
 
 #################################################################################

diff --git a/render_puzzle_boxes.py b/render_puzzle_boxes.py
@@ -4,6 +4,7 @@
 # https://www.thingiverse.com/thing:2410748
 #
 # This file is licensed under: https://creativecommons.org/licenses/by/3.0/
+# Source for file is at: https://gist.github.com/ex-nerd/2413d8e6f876b3857bde552f61235071
 
 # Number of nested mazes to generate (you will also get
 num_mazes = 3

diff --git a/render_puzzle_boxes.py b/render_puzzle_boxes.py
@@ -0,0 +1,105 @@
+#!/usr/bin/env python3
+#
+# Automatic rendering script for Russian Doll Maze Puzzle Box
+# https://www.thingiverse.com/thing:2410748
+#
+# This file is licensed under: https://creativecommons.org/licenses/by/3.0/
+
+# Number of nested mazes to generate (you will also get
+num_mazes = 3
+
+# Height in mm of inner maze
+height = 75
+# Additional mm spacing above inner maze when it's inserted into the next largest
+padding = 5
+# Diameter in mm of inner maze tube
+diameter = 25
+
+# Number of processor threads to use (probably don't touch this
+NUM_THREADS = 2
+
+#################################################################################
+# Don't touch below this line
+
+import os
+import platform
+import requests
+import subprocess
+from concurrent.futures import ThreadPoolExecutor, as_completed
+
+
+def openscad():
+    try:
+        if OPENSCAD_PATH:
+            return OPENSCAD_PATH
+    except NameError:
+        pass
+    if os.getenv("OPENSCAD_PATH"):
+        return os.getenv("OPENSCAD_PATH")
+    if platform.system() == "Darwin":
+        return "/Applications/OpenSCAD.app/Contents/MacOS/OpenSCAD"
+    if platform.system() == "Windows":
+        # Note: Windows allows forward slashes now
+        return '"C:/Program Files/OpenSCAD/openscad"'
+    # Default to linux-friendly CLI program name
+    return "openscad"
+
+
+def get_and_render(url, fname):
+
+    response = requests.get(url, stream=True)
+    response.raise_for_status()
+
+    with open(f"{fname}.scad", "wb") as scad:
+        for chunk in response.iter_content(1024):
+            scad.write(chunk)
+
+    scad_file = ""
+    stl_file = ""
+    cmd = [openscad(), "-o", f"{fname}.stl", f"{fname}.scad"]
+    # print(cmd)
+    subprocess.run(cmd)
+    return stl_file
+
+
+def generate(num, height, diameter, padding):
+
+    with ThreadPoolExecutor(max_workers=NUM_THREADS) as pool:
+
+        futures = []
+
+        for i in range(1, num + 1):
+            ni = "i" * (i - 1)
+            no = "o" * (num - i)
+
+            # The parts on the end of the URL are firstly whole numbers that are
+            # the inside height, inside diameter, and extra height on the inner
+            # box (in mm).
+
+            # Then letters, where "i" means there is a box inside this one, and
+            # "o" means there is a box outside this one. More "i"s mean mean more
+            # boxes inside and the overall size is increased accordingly.
+
+            # The set of 4 parts is designed around a rolled up £20 note. So
+            # 15mm wide and 75mm high but with 5mm space to allow the £20 to
+            # stick out and be accessible when the boxes are finally open.
+
+            url = f"http://e.gg/puzzlebox.cgi/{height}/{diameter}/{padding}/{ni}{no}"
+            fname = f"nested_labyrinth_{i}-of-{num}_{height}h_{diameter}d_{padding}p_{ni}{no}"
+
+            print(f"Queueing {i} of {num}")
+            futures.append(pool.submit(get_and_render, url, fname))
+            # get_and_render(url, fname)
+
+        print("Rendering...")
+
+        for future in as_completed(futures):
+            stl_file = future.result()
+            print(f"Finished: {stl_file}")
+
+    print("Done.")
+
+
+if __name__ == "__main__":
+
+    generate(num_mazes, height, diameter, padding)