From b2bca80796792b01474817d1a31fabd86ac4e617 Mon Sep 17 00:00:00 2001
From: Abdullah Tahiri <abdullah.tahiri.yo@gmail.com>
Date: Mon, 19 Dec 2016 23:21:02 +0100
Subject: [PATCH] Sketcher: Parabola box selection sign fix

---
 src/Mod/Sketcher/Gui/ViewProviderSketch.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Mod/Sketcher/Gui/ViewProviderSketch.cpp b/src/Mod/Sketcher/Gui/ViewProviderSketch.cpp
index bd3eb8632..b4f4b151c 100644
--- a/src/Mod/Sketcher/Gui/ViewProviderSketch.cpp
+++ b/src/Mod/Sketcher/Gui/ViewProviderSketch.cpp
@@ -2314,7 +2314,7 @@ void ViewProviderSketch::doBoxSelection(const SbVec2s &startPos, const SbVec2s &
                 pnt0 = aop->getCenter();
                 float angle = float(startangle) + segment/2;
                 for (int i = 0; i < countSegments; ++i, angle += segment) {
-                    pnt = Base::Vector3d(pnt0.x + angle * angle / 4 / focal * cos(phi) + angle * sin(phi),
+                    pnt = Base::Vector3d(pnt0.x + angle * angle / 4 / focal * cos(phi) - angle * sin(phi),
                                          pnt0.y + angle * angle / 4 / focal * sin(phi) + angle * cos(phi),
                                          0.f);