From 87243508e9c2a3ac3b5af7ff7b300a38f62dca1e Mon Sep 17 00:00:00 2001
From: volzhs <volzhs@gmail.com>
Date: Mon, 22 Feb 2016 18:13:27 +0900
Subject: [PATCH] keep previous rotation when using rotate tool. fixes #3788.

---
 tools/editor/plugins/canvas_item_editor_plugin.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/editor/plugins/canvas_item_editor_plugin.cpp b/tools/editor/plugins/canvas_item_editor_plugin.cpp
index f3ff001d842..f8bc97a433d 100644
--- a/tools/editor/plugins/canvas_item_editor_plugin.cpp
+++ b/tools/editor/plugins/canvas_item_editor_plugin.cpp
@@ -1560,7 +1560,7 @@ void CanvasItemEditor::_viewport_input_event(const InputEvent& p_event) {
 					Matrix32 rot;
 					rot.elements[1] = (dfrom - center).normalized();
 					rot.elements[0] = rot.elements[1].tangent();
-					node->set_rot(snap_angle(rot.xform_inv(dto-center).angle(), node->get_rot()));
+					node->set_rot(snap_angle(rot.xform_inv(dto-center).angle() + node->get_rot(), node->get_rot()));
 					display_rotate_to = dto;
 					display_rotate_from = center;
 					viewport->update();