Aspose.CAD for .NET 1.1.0 Release notes

Aspose.CAD for .Net has been updated to version 1.1.0 and we are pleased to announce it. The following is a list of changes in this version of Aspose.CAD.

Features and Improvements

Key	Summary	Category
CADNET-112	Find or search text in the DWG file	New Feature
CADNET-111	Support to retrieve block attribute values from within a dwg and its external references	New Feature
CADNET-16	Support for DGN file format for possible conversion to PDF & raster image formats	New Feature
CADNET-118	Msi misses End User Agreement link	Enhancement
CADNET-109	Cad export to Bmp fails with out of memory exception	Enhancement
CADNET-88	Unable to access Face3D Objects in DXF file	Enhancement

Usage Examples

CADNET-112 Find or search text in the DWG file

 using (CadImage cadImage = (CadImage)Image.Load(fileName))

{

    // search for text in the file

    foreach (CadBaseEntity entity in cadImage.Entities)

    {

        // please, note: we iterate through CadText entities here, but some other entities

        // may contain text also, e.g. CadMText and others

        if (entity.GetType() == typeof(CadText))

        {

            CadText text = (CadText)entity;

            System.Console.WriteLine(text.DefaultValue);

        }

    }

    // search for text on specific layout - DWG case

    // get all layout names and link each layout with corresponding block with entities

    CadLayoutDictionary layouts = cadImage.Layouts;

    string[] layoutNames = new string[layouts.Count];

    int i = 0;

    foreach (CadLayout layout in layouts.Values)

    {

        layoutNames[i++] = layout.LayoutName;

        System.Console.WriteLine("Layout " + layout.LayoutName + " is found");

        // find block, applicable for DWG only

        CadBlockTableObject blockTableObjectReference = null;

        foreach (CadBlockTableObject tableObject in cadImage.BlocksTables)

        {

            if (string.Equals(tableObject.HardPointerToLayout, layout.ObjectHandle))

            {

                blockTableObjectReference = tableObject;

                break;

            }

        }

        // Collection cadBlockEntity.Entities contains information about all entities on specific layout

        // if this collection has no elements it means layout is a copy of Model layout and contains the same entities

        CadBlockEntity cadBlockEntity = cadImage.BlockEntities[blockTableObjectReference.BlockName];

    }


    // search for text on specific layout - DXF case

    //// get all layout names and separate entities between layouts by their soft owners

    //CadLayoutDictionary layouts = cadImage.Layouts;

    //string[] layoutNames = new string[layouts.Count];

    //int i = 0;

    //Dictionary<string, List<CadBaseEntity>> entitiesOnLayouts = new Dictionary<string, List<CadBaseEntity>>();

    //foreach (CadLayout layout in layouts.Values)

    //{

    //    layoutNames[i++] = layout.LayoutName;

    //    System.Console.WriteLine("Layout " + layout.LayoutName + " is found");

    //    entitiesOnLayouts.Add(layout.BlockTableRecordHandle, new List<CadBaseEntity>());

    //}

    //foreach (CadBaseEntity entity in cadImage.Entities)

    //{

    //    entitiesOnLayouts[entity.SoftOwner].Add(entity);

    //}

    // export to pdf

    CadRasterizationOptions rasterizationOptions = new CadRasterizationOptions();

    rasterizationOptions.PageWidth = 1600;

    rasterizationOptions.PageHeight = 1600;

    rasterizationOptions.AutomaticLayoutsScaling = true;

    rasterizationOptions.CenterDrawing = true;

    // please, note: if cadBlockEntity collection mentioned above (for dwg) for selected layout or

    // entitiesOnLayouts collection by layout's BlockTableRecordHandle (for dxf) is empty

    // - export result file will be empty and you should draw Model layout instead

    rasterizationOptions.Layouts = new[] { "Layout1" };

    PdfOptions pdfOptions = new PdfOptions();

    pdfOptions.VectorRasterizationOptions = rasterizationOptions;

    cadImage.Save(outPath, pdfOptions);

}

CADNET-111 Support to retrieve block attribute values from within a dwg and its external references

 string fileName = "BlockRef.dwg";

using (CadImage image = (CadImage)Image.Load(fileName))

{

    bool isExternalReferenceFoundCorrectly = image.BlockEntities["Drawing1"].XRefPathName == @".\Drawing1.dwg";

}