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 # ansys.meshing.prime.BoundaryFittedSplineParams

 Last update: 20.02.2026 

<a id="ansys.meshing.prime.BoundaryFittedSplineParams.refinement_fraction_w"></a>

#### *property* BoundaryFittedSplineParams.refinement\_fraction\_w *: [float](https://docs.python.org/3.11/library/functions.html#float)*

Fraction of input mesh size that sets the control points size in w direction. This is used in program controlled control points selection mode.