AutoCAD DevBlog

Set origin while creating a hatch using .NET

By Deepak Nadig

We had an issue raised by a customer regarding setting origin(image) during hatch creation.

It was found that origin of hatch has to be set in a transaction other than the one in which it is created for it to work correctly.
Below code can be used for testing : 

[CommandMethod("setOrginHatch")]
public void setOriginHatch()
{
    Document doc = Application.DocumentManager.MdiActiveDocument;
    Database db = doc.Database;
    Editor ed = doc.Editor;

    ObjectId mHatchId;
    Hatch mHatch = new Hatch();
    using (Transaction tr1 = db.TransactionManager.StartTransaction())
    {
        BlockTable bt = (BlockTable)tr1.GetObject(doc.Database.BlockTableId, OpenMode.ForRead);
        BlockTableRecord btr = (BlockTableRecord)tr1.GetObject(db.CurrentSpaceId, OpenMode.ForWrite);

        Point2d pt = new Point2d(0, 0);
        Polyline mPolyline = new Polyline(4);
        mPolyline.AddVertexAt(0, pt, 0.0, -1.0, -1.0);
        mPolyline.Normal = Vector3d.ZAxis;
        mPolyline.AddVertexAt(1, new Point2d(pt.X + 10, pt.Y), 0.0, -1.0, -1.0);
        mPolyline.AddVertexAt(2, new Point2d(pt.X + 10, pt.Y + 5), 0.0, -1.0, -1.0);
        mPolyline.AddVertexAt(3, new Point2d(pt.X, pt.Y + 5), 0.0, -1.0, -1.0);
        mPolyline.Closed = true;

        ObjectId mPlineId;
        mPlineId = btr.AppendEntity(mPolyline);
        tr1.AddNewlyCreatedDBObject(mPolyline, true);

        ObjectIdCollection ObjIds = new ObjectIdCollection();
        ObjIds.Add(mPlineId);

        Vector3d normal = new Vector3d(0.0, 0.0, 1.0);
        mHatch.Normal = normal;
        mHatch.Elevation = 0.0;
        mHatch.PatternScale = 2.0;
        mHatch.SetHatchPattern(HatchPatternType.PreDefined, "NET");
        mHatch.ColorIndex = 1;
        mHatch.PatternAngle = 2;

        //trying to set origin here does not work 
        //Point2d setOrigin = new Point2d(6.698, 2.78);
        //mHatch.Origin = setOrigin;

        btr.AppendEntity(mHatch);
        tr1.AddNewlyCreatedDBObject(mHatch, true);

        mHatch.Associative = true;
        mHatch.AppendLoop(HatchLoopTypes.Outermost, ObjIds);
        mHatch.EvaluateHatch(true);

        //get the ObjectId of hatch 
        mHatchId = mHatch.ObjectId;

        tr1.Commit();
    }
    //to set the origin use another transaction 
    using (Transaction tr2 = doc.TransactionManager.StartTransaction())
    {
        Entity ent = (Entity)tr2.GetObject(mHatchId, OpenMode.ForWrite);
        if (ent != null)
        {
            Hatch nHatch = ent as Hatch;
            String hatchName = nHatch.PatternName;
            Point2d setOrigin = new Point2d(6.698, 2.78);
            nHatch.Origin = setOrigin;
            nHatch.SetHatchPattern(HatchPatternType.PreDefined, hatchName);
            nHatch.EvaluateHatch(true);
            nHatch.Draw();
        }
        tr2.Commit();
    }
}

Running OEMMAKEWIZARD from Command Line

By Madhukar Moogala

This is small batch script may be useful for OEM Developers.

Once you have created your project, you can run the AutoCAD OEM Make Wizard from the command line to automate building your product. In this mode, you can use any of the build options available on the Build Your Product page of the AutoCAD OEM Make Wizard. Enter the following command to display a Help screen describing the command-line options for the AutoCAD OEM Make Wizard:

oemmakewizard /? 

Build Options:

Path Options  
   /PA:  Specifies the path for AutoCAD OEM location  
   /PB:  Specifies the path for bitmap location  
Import Options  
   /IC:  Specifies a file for enabling\disabling AutoCAD commands  
   /IAS:  Specifies a file for adding your commands  
   /IRS:  Specifies a file that allows you to remove user specified commands or setvars  
Build Options  
   /BALL  Builds all (does not include the files executed by /BT command)  
   /BA  Binds ObjectARX/Core ObjectARX applications  
   /BB  Binds managed applications  
   /BBA  Binds managed ObjectARX applications  
   /BL  Binds AutoLISP applications  
   /BD  Binds DLL modules  
   /BV  Bind DVB macros  
   /BC  Copies files  
   /BT  Builds type libraries and registry files  
   /BT+  Registers associated registry files  
   /BI  Change icons  
   /BR  Rebuilds resources  
   /BR+  Rebuilds resources and uses settings with AutoCAD OEM  
   /BR-  Rebuilds resources, but does not bind the DLLs  
   /STOP  Interrupts batch mode when errors are encountered  
   /?  Displays the Help screen for all command options