Added --boundary config, boundary module (WIP)

opendm/boundary.py

@@ -0,0 +1,22 @@
+import fiona
+import os
+
+def load_boundary(boundary_json, reproject_to_crs=None):
+    if not os.path.isfile(boundary_json):
+        raise IOError("Cannot load boundary file: %s does not exist" % boundary_json)
+    
+    with fiona.open(boundary_json, 'r') as src:
+        if len(src) != 1:
+            raise IOError("Boundary file must have a single polygon (found: %s)" % len(src))
+        
+        geom = src[0]['geometry']
+
+        if geom['type'] != 'Polygon':
+            raise IOError("Boundary file must have a polygon feature (found: %s)" % geom['type'])
+
+        coords = geom['coordinates']
+
+        if reproject_to_crs is not None:
+            pass
+        
+        return coords

opendm/config.py

@@ -303,6 +303,16 @@ def config(argv=None, parser=None):
                           'Use 0 to disable cropping. '
                           'Default: %(default)s'))
 
+    parser.add_argument('--boundary',
+                    default='',
+                    metavar='<json>',
+                    action=StoreValue,
+                    type=path_or_json_string,
+                    help='GeoJSON polygon defining the boundary of the reconstruction. '
+                            'Can be specified either as path to a GeoJSON file or as a '
+                            'JSON string representing the contents of a '
+                            'GeoJSON file. Default: %(default)s')
+
     parser.add_argument('--pc-quality',
                     metavar='<string>',
                     action=StoreValue,