feat: load shapes from ply files

.gitignore

@@ -0,0 +1,3 @@
+venv
+*.pyc
+__pycache__

map.py

@@ -6,6 +6,7 @@ import os
 import sys
 
 import numpy as np
+from plyfile import PlyData
 from tqdm import tqdm, trange
 
 
@@ -114,9 +115,11 @@ def map_poly(tri, poly, ref=None):
 
 
 def main(ns):
-    with open(ns.faces, 'r') as f:
-        j = json.load(f)
-        faces = [Face([np.array(v)*ns.scale for v in vs]) for vs in j]
+    with open(ns.faces, 'rb') as f:
+        plydata = PlyData.read(f)
+    vs = plydata['vertex']
+    fs = plydata['face']['vertex_indices']
+    faces = [Face([np.array(vs[vi].tolist())*ns.scale for vi in fvs]) for fvs in fs]
     with open(ns.geojson, 'r') as f:
         geojson = json.load(f)
 
@@ -161,6 +164,6 @@ if __name__ == '__main__':
     ap.add_argument('--geojson', '-g', default='countries.geojson')
     ap.add_argument('--faces', '-f', default='shapes/cube.json')
     ap.add_argument('--out', '-o', default='faces/{faces}/face{face}.svg')
-    ap.add_argument('--scale', '-s', type=int, default=1)
+    ap.add_argument('--scale', '-s', type=float, default=1)
     ns = ap.parse_args()
     main(ns)

requirements.txt

@@ -0,0 +1,3 @@
+numpy==2.2.0
+plyfile==1.1
+tqdm==4.67.1