Lots of work on look-at widgets

Source/Integration/UtilityLibrary.h

@@ -77,6 +77,9 @@ public:
 	// Be aware that (0.0, 0.0) is the upper-left corner of the upper-left pixel,
 	// whereas (0.5, 0.5) is the center of the upper-left pixel.
 	//
+	// The resulting TraceStart and TraceEnd fields of the HitResult will not
+	// contain world positions, instead, they will contain the PixelXY.
+	//
 	UFUNCTION(BlueprintCallable, Category="Collision", meta=(AutoCreateRefTerm="ActorsToIgnore", Keywords="raycast"))
 		static bool LineTraceThroughPixel(const APlayerController* PlayerController, 
 			FVector2D PixelXY, double MaxDistanceFromCamera,