From fd0a9743a2e81348ebfdb8a3156ff0da5f9c096e Mon Sep 17 00:00:00 2001
From: Mikael Pettersson <mikael.pettersson@liu.se>
Date: Tue, 10 Mar 2020 10:25:31 +0100
Subject: [PATCH] Touch: Added a firstInput so that if we ever get more than
 max amount of inputs in our Deque, we will still have our first point stored
 (for pinching around a start-centroid mainly)

---
 include/openspace/util/touch.h | 1 +
 src/util/touch.cpp             | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/openspace/util/touch.h b/include/openspace/util/touch.h
index a7f8500a93..a7e8bc0735 100644
--- a/include/openspace/util/touch.h
+++ b/include/openspace/util/touch.h
@@ -80,6 +80,7 @@ public:
 private:
     //A deque of recorded inputs. Adding newer points to the front of the queue
     std::deque<TouchInput> _inputs;
+    TouchInput _firstInput;
 
     size_t _touchDeviceId;
     size_t _fingerId;
diff --git a/src/util/touch.cpp b/src/util/touch.cpp
index d5381daa01..f08c5cab03 100644
--- a/src/util/touch.cpp
+++ b/src/util/touch.cpp
@@ -73,6 +73,7 @@ float TouchInput::angleToPos(float otherX, float otherY) const {
 
 TouchInputHolder::TouchInputHolder(TouchInput input)
     : _inputs{ input }
+    , _firstInput(input)
     , _touchDeviceId(input.touchDeviceId)
     , _fingerId(input.fingerId)
 {}
@@ -182,7 +183,7 @@ size_t TouchInputHolder::numInputs() const {
 }
 
 const TouchInput& TouchInputHolder::firstInput() const {
-    return _inputs.back();
+    return _firstInput;
 }
 
 const TouchInput& TouchInputHolder::latestInput() const {