The deprecated version of sp_item_invoke_bbox_full (which still uses NRRects) returns empty rectangles when calculating geometric bboxes of vertical or horizontal lines. A group of those lines will therefore also have an empty geometric bbox, which is wrong. We must use the new version of sp_item_invoke_bbox_full, which uses NR::Maybe<NR::Rects> instead.

(bzr r5204)

1 files changed, 5 insertions, 1 deletions

diff --git a/src/seltrans.cpp b/src/seltrans.cpp
index 490ff4644..5ab99e147 100644
--- a/src/seltrans.cpp
+++ b/src/seltrans.cpp
@@ -278,7 +278,11 @@ void Inkscape::SelTrans::grab(NR::Point const &p, gdouble x, gdouble y, bool sho
     _approximate_bbox = selection->bounds(SPItem::APPROXIMATE_BBOX); // Used for correctly scaling the strokewidth
     _geometric_bbox = selection->bounds(SPItem::GEOMETRIC_BBOX);
     _point = p;
-    _point_geom = _geometric_bbox->min() + _geometric_bbox->dimensions() * NR::scale(x, y);    
+    if (_geometric_bbox) {
+        _point_geom = _geometric_bbox->min() + _geometric_bbox->dimensions() * NR::scale(x, y);
+    } else {
+        _point_geom = p;
+    }    
 
     // Next, get all points to consider for snapping
     SnapManager const &m = _desktop->namedview->snap_manager;