From 6ce832e439c8646d9fcd65b72bd6b788e52f9f88 Mon Sep 17 00:00:00 2001
From: bubnikv <bubnikv@gmail.com>
Date: Thu, 8 Jun 2017 20:50:24 +0200
Subject: [PATCH] The OpenGL Z-bufer has low precision, therefore a bounding
 box test had to be relaxed.

---
 lib/Slic3r/GUI/3DScene.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Slic3r/GUI/3DScene.pm b/lib/Slic3r/GUI/3DScene.pm
index a97c9dafa..8ecf10de7 100644
--- a/lib/Slic3r/GUI/3DScene.pm
+++ b/lib/Slic3r/GUI/3DScene.pm
@@ -396,7 +396,7 @@ sub mouse_event {
                     my $pos3d = $self->mouse_to_3d(@$pos);
                     # Only accept the initial position, if it is inside the volume bounding box.
                     my $volume_bbox = $self->volumes->[$volume_idx]->transformed_bounding_box;
-                    $volume_bbox->offset(0.01);
+                    $volume_bbox->offset(1.);
                     if ($volume_bbox->contains_point($pos3d)) {
                         # The dragging operation is initiated.
                         $self->_drag_volume_idx($volume_idx);