GeometryExtendOptions

By default, extension considers both ends of paths. The old ends remain and new points are added at the extended ends. The new points have attributes that are extrapolated from adjacent existing segments.

Do not extend the 'to' end of any path.

Do not extend the 'from' end of any path.

If an extension is performed at an end, do not extrapolate the end-segment's attributes for the new point. Instead, make its attributes the same as the current end. Incompatible with GeometryExtendOptions.NoEndAttributes.

If an extension is performed at an end, do not extrapolate the end-segment's attributes for the new point. Instead, make its attributes be empty. Incompatible with GeometryExtendOptions.KeepEndAttributes.

If an extension is performed at an end, relocate the end point to the new position instead of leaving the old point and adding a new point at the new position.