Repo created

libs/drape_frontend/animation/interpolations.cpp

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+#include "drape_frontend/animation/interpolations.hpp"
+
+#include "geometry/angles.hpp"
+
+namespace df
+{
+
+double InterpolateDouble(double startV, double endV, double t)
+{
+  return startV + (endV - startV) * t;
+}
+
+m2::PointD InterpolatePoint(m2::PointD const & startPt, m2::PointD const & endPt, double t)
+{
+  m2::PointD diff = endPt - startPt;
+  return startPt + diff * t;
+}
+
+double InterpolateAngle(double startAngle, double endAngle, double t)
+{
+  startAngle = ang::AngleIn2PI(startAngle);
+  endAngle = ang::AngleIn2PI(endAngle);
+  return startAngle + ang::GetShortestDistance(startAngle, endAngle) * t;
+}
+
+}  // namespace df