From 69907fd60c99862f9afd4f1343c95c38cf3b8bcc Mon Sep 17 00:00:00 2001
From: Jonathan Bosson <jonathan.bosson@gmail.com>
Date: Tue, 16 May 2017 18:21:07 -0600
Subject: [PATCH] nullify roll velocity in onlyPan case

---
 modules/touch/src/TouchInteraction.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/touch/src/TouchInteraction.cpp b/modules/touch/src/TouchInteraction.cpp
index 3bd752f3d4..df422c80cb 100644
--- a/modules/touch/src/TouchInteraction.cpp
+++ b/modules/touch/src/TouchInteraction.cpp
@@ -306,6 +306,9 @@ void TouchInteraction::directControl(const std::vector<TuioCursor>& list) {
 			_vel.zoom = par.at(2);
 			_vel.roll = par.at(3);
 			if (nDOF > 4) {
+				if (_onlyPan) {
+					_vel.roll = 0.0;
+				}
 				_vel.pan = glm::dvec2(par.at(4), par.at(5));
 			}
 		}