Remove custom easing functions. Use ghoul's instead

modules/autonavigation/helperfunctions.cpp

@@ -36,55 +36,6 @@ namespace openspace::autonavigation::helpers {
 
 } // helpers
 
-namespace openspace::autonavigation::easingfunctions {
-
-double linear(double t) { return t; };
-
-double step(double t) { return (t > 0.5); };
-
-double circularEaseOut(double p){
-    return sqrt((2 - p) * p);
-}
-
-double cubicEaseIn(double t) { return (t*t*t); };
-
-double cubicEaseOut(double t) {
-    double p = 1 - t;
-    return (p*p*p);
-}
-
-double cubicEaseInOut(double t) {
-    if (t < 0.5) {
-        return 4 * t * t * t;
-    }
-    else {
-        double f = ((2 * t) - 2);
-        return 0.5 * f * f * f + 1;
-    }
-}
-
-double quadraticEaseInOut(double t) {
-    if (t < 0.5) {
-        return 2 * t * t;
-    }
-    else {
-        return (-2 * t * t) + (4 * t) - 1;
-    }
-}
-
-double exponentialEaseInOut(double t) {
-    if (t == 0.0 || t == 1.0) return t;
-
-    if (t < 0.5) {
-        return 0.5 * glm::pow(2, (20 * t) - 10);
-    }
-    else {
-        return -0.5 * glm::pow(2, (-20 * t) + 10) + 1;
-    }
-}
-
-} // easingfunctions
-
 namespace openspace::autonavigation::interpolation {
    
     // TODO: make all these into template functions

modules/autonavigation/pathsegment.cpp

@@ -32,6 +32,7 @@
 #include <openspace/scene/scenegraphnode.h>
 #include <openspace/util/camera.h>
 #include <ghoul/logging/logmanager.h>
+#include <ghoul/misc/easing.h>
 
 namespace {
     constexpr const char* _loggerCat = "PathSegment";
@@ -70,7 +71,7 @@ const double PathSegment::duration() const { return _duration; }
 const double PathSegment::startTime() const { return _startTime; }
 
 const glm::dvec3 PathSegment::getPositionAt(double t) const {
-    t = easingfunctions::cubicEaseInOut(t);
+    t = ghoul::cubicEaseInOut(t); 
     return _curve->valueAt(t);    
 }
 
@@ -78,10 +79,10 @@ const glm::dquat PathSegment::getRotationAt(double t) const {
     // TODO: improve how rotation is computed
 
     double tSlerp = helpers::shiftAndScale(t, 0.1, 0.9);
-    tSlerp = easingfunctions::cubicEaseInOut(tSlerp);
+    tSlerp = ghoul::cubicEaseInOut(tSlerp);
 
     double tLookAt = helpers::shiftAndScale(t, 0.2, 0.8);
-    tLookAt = easingfunctions::cubicEaseInOut(tLookAt);
+    tLookAt = ghoul::cubicEaseInOut(tLookAt);
 
     switch (_curveType) {
     case CurveType::Linear2: