From f767dd6287b8dbb0ef7ef4219ebed7483bef9d3d Mon Sep 17 00:00:00 2001
From: Nat Wilson <natw@fortyninemaps.com>
Date: Sat, 21 Oct 2017 15:43:54 -0700
Subject: [PATCH] handle possibillity that bbox may be a 6-tuple

coordstring v0.2.0 now returns a 6-tuple when coordinates are 3D, so
check for this case
---
 karta/vector/quadtree.pyx | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/karta/vector/quadtree.pyx b/karta/vector/quadtree.pyx
index 624c23a..7769fd8 100644
--- a/karta/vector/quadtree.pyx
+++ b/karta/vector/quadtree.pyx
@@ -68,8 +68,14 @@ cdef class QuadTree:
         cdef int i = 0
         cdef int idup = 0
         cdef dict duplicates = {}
+        cdef tuple _bb
+
+        _bb = points.bbox()
+        if len(_bb) == 4:
+            xmin, ymin, xmax, ymax = _bb
+        else:
+            xmin, ymin, _,  xmax, ymax, _ = _bb
 
-        xmin, ymin, xmax, ymax = points.bbox()
         bbox = qt_new_bbox(xmin, ymin, xmax, ymax)
         self.root.leafnode = qt_new_leaf(leaf_capacity, bbox)