Add json to obj conversion script

pybits/json_to_obj.py

@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+
+import argparse
+import json
+import numpy as np 
+import sys
+
+
+def read(path):
+    with open(path) as f:
+        return np.array(json.load(f)["triangles"])
+
+
+def program(args):
+    triangles = read(args.path)
+    vertices = triangles.reshape(len(triangles) * 3, 3)
+    print('usemtl todo')
+    for vertex in vertices:
+        print(f'v {vertex[0]} {vertex[1]} {vertex[2]}')
+    for index in range(1, len(vertices), 3):
+        print(f'f {index}// {index + 1}// {index + 2}//')
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Convert JSON to OBJ",
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter,
+    )
+    parser.add_argument("path")
+    args = parser.parse_args()
+    sys.exit(program(args))
+
+
+main()