topic Re: How to get surface which is bounded curve from non planar surface? in ObjectARX Forum

How to get surface which is bounded curve from non planar surface?

Anonymous — Fri, 01 Jul 2016 09:13:15 GMT

Hi,

AcDbSurface::createFrom() works with planar curve. Is there a workaround to create a surface by non planar curve? I attached a dwg file with non planar surface and curve onto it. How to get a surface which is bounded by this curve?

Bayar

Re: How to get surface which is bounded curve from non planar surface?

tbrammer — Mon, 04 Jul 2016 09:38:52 GMT

You could try a modification of the solution I posted here.

I tried it with your DWG but got an modelling error.

It might work if you modify the code. Currently it uses only curves, that are projected to the surface and leaves the array toolIds empty.

If you pass your curve in toolIds it might work, because it already lies within the surface. But I haven't tried yet.

Re: How to get surface which is bounded curve from non planar surface?

Anonymous — Mon, 04 Jul 2016 10:07:23 GMT

Hi tbrammer,

This post is also relative with trimming surfaces. 'AcDbSurface::trimSurface(..., const AcGePoint3d& pickPoint, ...)' is good method for my goal. But I have a difficulty with properly programmaticaly defining the 'pickPoint' for outer or inner trimming .

Now I try to find a workaround for trimming surface through 'AcDbSurface::booleanSubtract()' method. So I try to get a surfaces which bounded by curves.

Bayar