RhinoCommon API
GeometryBaseMakeDeformable Method | 
            If possible, converts the object into a form that can be accurately modified
            with "squishy" transformations like projections, shears, an non-uniform scaling.
            
Namespace: Rhino.Geometry
Assembly: RhinoCommon (in RhinoCommon.dll)
Return Value
Type: Booleanfalse if object cannot be converted to a deformable object. true if object was already deformable or was converted into a deformable object.