#branch UE4
#proj Editor.ComponentVisualizers, Editor.UnrealEd, Runtime.Core, Runtime.Engine
#change FInterpCurve now uses a binary search to obtain the correct key. Removed the optional out-parameter on Eval, EvalDerivative, etc. Removed FORCEINLINEs on large methods.
#change USplineComponent now builds the remap table with points spaced at equal distances, which leads to better results. Added internal methods to obtain the segment length, and the interpolation parameter along the segment at a given distance.
#add Added Duration to USplineComponent.
#add Added a number of different methods for obtaining position, tangent and rotation at a specified distance, or a specified time (optionally at constant velocity).
#add Added methods for building the spline procedurally.
#add Supports right-click context menu on ComponentVisualizers in the standard interface.
#add Key tangents can be manually edited.
#change FLevelEditorViewportClient::ProcessClick now handles right clicks to the Unreal gizmo in the same manner as left clicks, i.e. the method recurses using a version of the hit proxy with the gizmo removed, so we can look at what's underneath. This allows for "genuine" context menus, i.e. depending on what was clicked, instead of using a single default provided by the current level editor.
#reviewedby James.Golding
[CL 2089561 by Richard TalbotWatkin in Main branch]
Remove ComponentInstanceDataCache.h from ActorComponent.h
Remove SplineComponent.h from Engine.h
Change splinecomp funcs to get get location/direction at point on spline to be world space (and normalized direction vector)
Update reparam table when editing spline
#codereview marc.audy
[CL 2077607 by James Golding in Main branch]
Simplified SplineComponent, now a SceneComponent not a PrimitiveComponent
Added support for persisting SplineComp state across CS re-run
SplineComponentVisualizer editing started
[CL 2075479 by James Golding in Main branch]
#proj core
#branch UE4
#summary Removed header groups, removed some redundant includes and replaced with forward declarations. Fixed compilation errors.
[CL 2055361 by Mikolaj Sieluzycki in Main branch]
#proj core
#branch UE4
#summary Removed header groups, removed some redundant includes and replaced with forward declarations. Fixed compilation errors.
[CL 2054304 by Mikolaj Sieluzycki in Main branch]
