From 9eb3012ecc9daa877d9303746d6af8ac7edc6ded Mon Sep 17 00:00:00 2001
From: Uwe <donovaly@users.noreply.github.com>
Date: Fri, 7 Jan 2022 21:55:48 +0100
Subject: [PATCH] [Gui] use predefined M_PI

---
 src/Gui/SoTouchEvents.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/Gui/SoTouchEvents.cpp b/src/Gui/SoTouchEvents.cpp
index 4a34583d35..1cc73540f0 100644
--- a/src/Gui/SoTouchEvents.cpp
+++ b/src/Gui/SoTouchEvents.cpp
@@ -108,8 +108,7 @@ SbBool SoGesturePinchEvent::isSoGesturePinchEvent(const SoEvent *ev) const
  */
 double SoGesturePinchEvent::unbranchAngle(double ang)
 {
-    const double Pi = 3.14159265358979323846;
-    return ang - 2.0*Pi*floor((ang+Pi)/(2.0*Pi));
+    return ang - 2.0 * M_PI * floor((ang + M_PI) / (2.0 * M_PI));
 }