I have a SketchSpline3D and projects to a workplane to get a ProjectToSurfaceCurve which also is a 3D sketch object，then I want to get the CurveEvaluator(a B-Rep object) of these two 3D sketchs，I can do this as flows:
- Make a LoftFeature，get a Face of this LoftFeature;
- Then the SketchSpline3D and ProjectToSurfaceCurve became Edges on the Face, then I can use the Edge.Evaluator to get a CurveEvaluator (a B-Rep object), and with the Edge.Gormetry, the Edge can also be casted into a BSplineCurve(TransientGeometry object) )
Q1: So is there a more direct way to get the geometry of a 3D Sketch like SketchSpline3D and ProjectToSurfaceCurve? Or I must to turn the 3D Sketch into an edge on the face first? To me the 3D Sketch and the Edge are the same thing, they are there but I can’t get it.
Q2: Is someone can explain the relationship between Edge (B-Rep object), BSplineCurve(TransientGeometry object) and SketchSpline3D(3D Sketch object)? Are the BSplineCurve and SketchSpline3D complete different thing mathematically and can not turn to each other?
