topic Re: polyline with arc in ObjectARX Forum

polyline with arc

Anonymous — Wed, 16 Nov 2011 09:44:13 GMT

Hello,

Here is one question troubled me for a while.When I use AcGe, I found polyline can only express LineSegs, If I want convert Curves(linesegs and arcs) into polyline, Is there any class can use?

Thank you!

Re: polyline with arc

Alexander.Rivilis — Wed, 16 Nov 2011 22:48:18 GMT

Functions acdbConvertAcDbCurveToGelibCurve() and acdbConvertGelibCurveToAcDbCurve() (begining only with ObjectARX SDK 2012) can help you convert DB-curve to GE-curve and vice versa

Re: polyline with arc

Anonymous — Thu, 17 Nov 2011 02:24:03 GMT

Thanks a lot.

I mean that AcGePolyline3d can only Express Linear Entities, If I want describe both LineSeg and Arc use AcGePolyline3d, how can I do?

Re: polyline with arc

Alexander.Rivilis — Thu, 17 Nov 2011 05:40:51 GMT

From ObjectARX SDK Docs: AcGePolyline3d Represents a piecewise linear spline entity in 3D space.

That is why you have to using AcGeCompositeCurve3d class in order to represent connected end to end linear and arc segments, but can not using AcGePolyline3d

Re: polyline with arc

Anonymous — Thu, 08 Dec 2011 01:34:01 GMT

I used AcGeAugPoyline3d instead, it looks fit my target.

Thanks