dont crash if zero vertices are to build in _build_vertex_values

2018-01-15 19:12:07 +01:00 · 2018-01-15 19:12:07 +01:00 · 9a80c2d38b
commit 9a80c2d38b
parent a66692f771
1 changed files with 2 additions and 0 deletions
--- a/src/c3nav/mapdata/render/geometry/level.py
+++ b/src/c3nav/mapdata/render/geometry/level.py
@ -253,6 +253,8 @@ class LevelGeometries:
        Interpolate vertice with known altitudes to get altitudes for the remaining ones.
        """
        vertex_values = np.empty(self.vertices.shape[:1], dtype=np.int32)
+        if not vertex_values.size:
+            return vertex_values
        vertex_value_mask = np.full(self.vertices.shape[:1], fill_value=False, dtype=np.bool)

        for item in items: