How to replace torus as cylinder in Autocad via .net

[Anonymous]

Hi

I have autocad file with 600 torus solid3d inside and the question is how to replace this torus as cylinders with this same property?

Maybe more specific how to take info from solid3d SolidType = "torus" like TorusRadius ?

It is possible ?

[_gile]

Hi,

Here's an example using the Boudary Representation API (acmgdbrep.dll have to be referenced):

        [CommandMethod("TEST")]
        public void Test()
        {
            var doc = AcAp.DocumentManager.MdiActiveDocument;
            var db = doc.Database;
            var ed = doc.Editor;

            var opts = new PromptEntityOptions("\nSelect a torus: ");
            opts.SetRejectMessage("\nSelected object is not a Solid 3D.");
            opts.AddAllowedClass(typeof(Solid3d), true);
            var res = ed.GetEntity(opts);
            if (res.Status != PromptStatus.OK)
                return;

            using (var tr = db.TransactionManager.StartTransaction())
            {
                var solid = (Solid3d)tr.GetObject(res.ObjectId, OpenMode.ForRead);
                using (var brep = new Autodesk.AutoCAD.BoundaryRepresentation.Brep(solid))
                {
                    if (brep.Faces.Count() != 1)
                    {
                        ed.WriteMessage("\nSelected object is not a torus.");
                        return;
                    }
                    var surf = (ExternalBoundedSurface)brep.Faces.First().Surface;
                    var torus = surf.BaseSurface as Torus;
                    if (torus == null)
                    {
                        ed.WriteMessage("\nSelected object is not a torus.");
                        return;
                    }
                    ed.WriteMessage("\nTorus" +
                        $"\n\tCenter: {torus.Center}" +
                        $"\n\tAxis: {torus.AxisOfSymmetry}" +
                        $"\n\tMajor radius: {torus.MajorRadius}" +
                        $"\n\tMinor radius: {torus.MinorRadius}");
                }
                    tr.Commit();
          

[Anonymous]

Great Thank you !