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API > API/Runtime > API/Runtime/GeometryCore > API/Runtime/GeometryCore/TPolyBezierSpline
Description
Returns the length of the parameter range of the closing segment. The returned value is unset if the spline is open.
| Name | GetLoopKnotDelta |
| Type | function |
| Header File | /Engine/Source/Runtime/GeometryCore/Public/Splines/PolyBezierSpline.h |
| Include Path | #include "Splines/PolyBezierSpline.h" |
TOptional < float > GetLoopKnotDelta() const