topic Re: The MinPoint of Extents returned from leader.Geometric is 0 ！ in .NET Forum

The MinPoint of Extents returned from leader.Geometric is 0 ！

Anonymous — Wed, 17 May 2017 09:41:43 GMT

When I try to get extents of a leader ,i would use leader.GeometricExtents to obtain the extents ,but i find the extents returned is wrong!

The Extents 's Minpoint is usually 0,,why will be that?Is this a bug of .net api of cad?

Does anyone help me?I'm in hurry.Thanks a lot.

Re: The MinPoint of Extents returned from leader.Geometric is 0 ！

BKSpurgeon — Thu, 18 May 2017 02:27:37 GMT

The min points looks to be zero there (0,0,0)? am i missing something here?

Re: The MinPoint of Extents returned from leader.Geometric is 0 ！

Anonymous — Thu, 18 May 2017 06:15:17 GMT

It can be sure that the Extents's Minpoint is not (0,0,0).You can have a try .Draw a Leader with three verteices which locates at northeast to the basepoint.And use leader.GeometricExtents to get the Extents .I can sure you will find the Extents's MinPoint must be (0,0,0).In addition,i use the AutoCAD2007 to develop.Thanks for your apply.

Re: The MinPoint of Extents returned from leader.Geometric is 0 ！

BKSpurgeon — Thu, 18 May 2017 11:54:24 GMT

Hi there

can you attach the relevant drawing and the relevant bit in your code (please cut out all the irrelevant stuff) and we can see whether we can crack this puzzle?

rgds

Ben

Re: The MinPoint of Extents returned from leader.Geometric is 0 ！

Anonymous — Fri, 19 May 2017 06:06:55 GMT

        [CommandMethod("boundblock")]
        public void boundblock()
        {
            Editor ed = Application.DocumentManager.MdiActiveDocument.Editor;
            Database db = HostApplicationServices.WorkingDatabase;
            PromptEntityResult per = ed.GetEntity("\nselect a leader:");
            if (per.Status == PromptStatus.OK)
            {
                using (Transaction tran = db.TransactionManager.StartTransaction())
                {
                    Entity ent = per.ObjectId.GetObject(OpenMode.ForWrite) as Entity;
                    Extents3d ext1 = ent.GeometricExtents;
                    ext1.TransformBy(ed.CurrentUserCoordinateSystem.Inverse());
                    tran.Commit();
                }
            }
        }

Here is my code.And I attach the test dwg below.Thanks for your kind!

Re: The MinPoint of Extents returned from leader.Geometric is 0 ！

_gile — Fri, 19 May 2017 07:39:05 GMT

Hi,

I cannot reproduce what you describe, I got:

ext1 {((614.254836018791,306.800513620825,0), (1935.xxx-xxxxxxxx,896.604705878846,0))}

Which AutoCAD version are you using?

Re: The MinPoint of Extents returned from leader.Geometric is 0 ！

Anonymous — Fri, 19 May 2017 07:50:51 GMT

I use the AutoCAD 2007 .Net api to develp,thanks a lot.

Re: The MinPoint of Extents returned from leader.Geometric is 0 ！

BKSpurgeon — Sat, 20 May 2017 01:29:45 GMT

I got exactly the same:

Re: The MinPoint of Extents returned from leader.Geometric is 0 ！

_gile — Sat, 20 May 2017 14:07:07 GMT

Hi,

I confirm the problem on AutoCAD 2007, it's probably an API youth bug.

Re: The MinPoint of Extents returned from leader.Geometric is 0 ！

Anonymous — Sat, 20 May 2017 15:07:51 GMT

Ok，thanks a lot for your help.Now I plan to write a special function to get a leader's extents.

In addition,is this function(leader.GeometrcExtents) still a bug in objectarx(vc++)?