Recent content by WilsonBlr

I am working on an External NX application using C and C++ API with NX 8.5. I am trying to fit curves and surfaces through some point data that I have. I am adding the points to an array and trying to fit a curve through those using StudioSplineBuilder. I need a NURBS curve so I use...

Used NX 8.5 for this. // standard headers #include <iostream> #include <fstream> #include <string> #include <sstream> // #include <time.h> #include <stdio.h> // // #include <uf.h> #include <uf_ui.h> #include <uf_exit.h> #include <uf_defs.h> #include <uf_modl_curves.h> #include <uf_curve.h>...

I am trying to fit a curve using UF_MODL_create_fitted_spline providing end slopes. One end of the created spline shows a loop back due to the slope constraint. I have observed that NX decides the direction of the slope vector automatically. I tried negating the slope vector but still it causes...

I am trying to create a set of 'through curves' surfaces using UF_MODL_create_sew. I have two parallel surfaces and a third adjoining surface which should have a C0 or C1 continuity with the parallel surfaces. I am creating all the three faces using a thru_curves method which accepts set of...

http://files.engineering.com/getfile.aspx?folder=80313ea5-ad12-4cb1-8ca3-7490baa1859b&file=NX-surf.png

Thanks John, How then is it possible to get a surface which has a C0 or C1 continuity with the adjoining surfaces ??

What change does the sewing operation do to a B surface? I am using UF_MODL_create_sew to sew two surfaces. But when I query the target surface for knots and control points using UF_MODL_ask_bsurf before and after the sewing operation I see no difference. So I am not sure if I have the right...

Hey thanks a ton Bleaker. That is what I needed. I was using the pointer without allocating memory. But surprisingly the program executed a few times before and I was able to print the control points, I guess the function UF_MODL_ask_bsurf was also allocating memory internally. Not sure...

Visual Studio 2010 behaves in a weird manner. I have a function to extract control points from a surface in which i use UF_MODL_ask_bsurf(). Sometimes VS executes past the code line and prints the control points on console. Some other times it stops at UF_MODL_ask_bsurf(). I cant figure out...

Cowski, thanks for the reply. I see there is no straight way to create scalar objects as the constructor for those are protected. I saw this function UF_CALL(UF_POINT_create_on_surface(tGeometry, tag_u, tag_v, PtTag)); to which I need to pass tags to scalar objects for u and v. It can be...

I am trying to get control points and other data for a NURBS surface. I am using the UF_MODL_ask_bsurf method. UF_MODL_bsurface_p_t t_struc_info; UF_CALL(UF_MODL_ask_bsurf(SurfId, t_struc_info)); I get the following error without any proper error message or error code...

Hi I am creating a surface using a thru curves option UF_MODL_create_thru_curves. I need to get a point on this surface for a given u and v parameter values. How can this be done ? Thanks for the help. Regards Wilson

Hi, I am trying to create a spline in NXOpen by passing the points on curve and I need to extract the control points for this curve. Which would be the best way to do it? I can use UF_CALL (UF_MODL_create_fitted_spline(&tFitSplineData, &dMaxErr, &nErrorCode, &tGeometry) ); but I dont know...

Is there a way to get the control points of a spline created through UF_CALL (UF_MODL_create_fitted_spline(&tFitSplineData, &dMaxErr, &nErrorCode, &tGeometry) ); I have the tGeometry. Can this be casted to any spline class which can return the control points.

Thanks a ton Cowski and Bleaker. I was missing the initialization, hence the error. Now I see the application running after adding UF_initialize()