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-rw-r--r--src/box3d.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/box3d.cpp b/src/box3d.cpp
index 44b2c9bbe..fbf7fb15d 100644
--- a/src/box3d.cpp
+++ b/src/box3d.cpp
@@ -42,6 +42,8 @@ static gchar * sp_3dbox_get_perspective_string (SP3DBox *box);
static SPGroupClass *parent_class;
+static gint counter = 0;
+
GType
sp_3dbox_get_type(void)
{
@@ -99,6 +101,8 @@ sp_3dbox_build(SPObject *object, SPDocument *document, Inkscape::XML::Node *repr
SP3DBox *box = SP_3DBOX (object);
+ box->my_counter = counter++;
+
if (repr->attribute ("inkscape:perspective") == NULL) {
// we are creating a new box; link it to the current perspective
Box3D::Perspective3D::current_perspective->add_box (box);