scripting/render.py

+#!/usr/bin/env nix-shell
+#!nix-shell -i python -p openscad "python3.withPackages(ps : with ps; [ pyyaml ])"
+
+
+import yaml
+import shutil
+import subprocess
+
+
+class OpenSCAD:
+
+  def __init__(self):
+    self.__openscad = shutil.which('openscad')
+
+  def __call__(self, *args, outfile=None, csglimit=None, **kwargs):
+    '''args are added at the end, kwargs are used to add variable overrides'''
+
+    cmd = [self.__openscad]
+
+
+    # Can we do better instead of replicating this all over the place???
+
+    if csglimit is not None:
+      cmd += [f'--csglimit={csglimit}']
+
+
+    for k, v in kwargs.items():
+      cmd +=  ['-D', f'{k}="{v}"']
+
+
+    if outfile is not None:
+      cmd += ['-o', outfile]
+
+    cmd += args
+
+    print(f'Running OpenSCAD: {cmd}')  # TODO: remove after debugging?!
+    return subprocess.Popen(cmd).communicate()
+
+
+def main():
+  # TODO: Error check for missing files!
+  with open('parts.yml', 'r') as f:
+    parts = yaml.safe_load(f)
+
+  # print(parts)
+
+  scad = OpenSCAD()
+
+  for part in parts:
+    # TODO: error check for missing attributes!
+
+    name = part['name']
+    file = part['file']
+    outfile = part['outfile']
+
+    del part['name']
+    del part['file']
+    del part['outfile']
+
+    vars = part
+    vars['$part'] = name
+
+    scad(file, outfile=outfile, **vars)
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+if __name__ == '__main__':
+  main()