Aspose.CAD 22.2.0

Fetch DWF Page Size Dimension via CAD .NET API

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Aspose.CAD for .NET is a standalone class library to enhance ASP.NET & Windows applications to process & render CAD drawings without requiring AutoCAD or any other rendering workflow. The CAD Class Library allows high-quality conversion of DWG, DWF, DWFX, DWT, DGN, STL, OBJ, STL, CF2, IGES, IFC, PLT, and DXF files, layouts, and layers to PDF & raster image formats.

What is Aspose.CAD for .NET?

Aspose.CAD for .NET is a cross-platform library that seamlessly integrates; rendering, editing, reporting, and conversion capabilities for AutoCAD, and other CAD & BIM drawings into your own .NET Apps, without the need to install any 3rd party software.

It enables your C#, VB.NET, ASP.NET applications to work with plain plots, 3D solids, wired models, basic cube positions, 3D faces, surfaces, and meshes within DWG, DXF, DWF, and DGN file formats. Other supported formats include IFC, IGES, STL, DWT, PLT, DWFx, CFF2, and OBJ which can be exported to a variety of vector formats, such as; SVG, WMF, PDF as well as raster image formats (BMP, JP2, GIF, PSD, JPEG, TIF, PNG, etc.). You can also convert AutoCAD files to high-quality PDF, other vector formats, or raster images while tracking the file conversion process. Aspose.CAD for .NET also allows developers to select and convert specific layouts and layers.

Aspose.CAD for .NET supports Windows, Linux, Android, and iOS operating systems (32-bit and 64-bit). It could be integrated into your .NET infrastructure with .NET Core, Xamarin, Mono, or via classic .NET Framework.

CAD File Processing Features

• Convert CAD to PDF.
• Convert CAD to images.
• Track file processing progress.
• Manipulate drawing entities and blocks.
• Select and convert specific layouts of CAD drawings.
• Select and convert specific layers of CAD drawings.
• Adjust CAD drawing size before rendering.
• Support for BigFont.
• Automatically detect optimal zoom for the CAD drawings.

What's new in v22.2.0

Fetch Page Size & Page Dimensions of DWF

Added the ability to get the page size & page dimensions of DWF file.

// The path to the documents directory.
string MyDir = RunExamples.GetDataDir_DWFDrawings();
string sourceFilePath = MyDir + "blocks_and_tables.dwf";
string extension = Path.GetExtension(sourceFilePath);
using (DwfImage image = (DwfImage)Aspose.CAD.Image.Load(sourceFilePath))
    {
        foreach (var page in image.Pages)
            {
                var layout = page.Name;
                System.Console.WriteLine("Layout= " + layout);
                using (FileStream fs = new FileStream(MyDir + "layout_" + layout + ".jpg", FileMode.Create))
                {
                    JpegOptions jpegOptions = new JpegOptions();
                    CadRasterizationOptions options = new CadRasterizationOptions();
                    options.Layouts = new string[] { layout };

                    double sizeExtX = page.MaxPoint.X - page.MinPoint.X;
                    double sizeExtY = page.MaxPoint.Y - page.MinPoint.Y;

                    if (page.UnitType == UnitType.Inch)
                    {
                        options.PageHeight = CommonHelper.INtoPixels(sizeExtY, CommonHelper.DPI);
                        options.PageWidth = CommonHelper.INtoPixels(sizeExtX, CommonHelper.DPI);
                    }
                    else if (page.UnitType == UnitType.Millimeter)
                    {
                        options.PageHeight = CommonHelper.MMtoPixels(sizeExtY, CommonHelper.DPI);
                        options.PageWidth = CommonHelper.MMtoPixels(sizeExtX, CommonHelper.DPI);
                    }
                    else
                    {
                        options.PageHeight = (float)sizeExtY;
                        options.PageWidth = (float)sizeExtX;
                    }


                    jpegOptions.VectorRasterizationOptions = options;

                    image.Save(fs, jpegOptions);
                }
            }
    }

Default Fallback Font

Added the facility to set the default fallback font.

DXF to PDF Transparency Effect in MTEXT

It was observed that during DXF to PDF conversion the MTEXT (Multiple Text) was losing transparency. This issue has now been resolved.

The following is a simple C# code snippet that converts a specific layer from DXF format into PDF format via API:

string MyDir = RunExamples.GetDataDir_DXFDrawings();
string sourceFilePath = MyDir + "conic_pyramid.dxf";
using (Aspose.CAD.Image image = Aspose.CAD.Image.Load(sourceFilePath))
    {
        //  Create an instance of CadRasterizationOptions and set its various properties
        Aspose.CAD.ImageOptions.CadRasterizationOptions rasterizationOptions = new Aspose.CAD.ImageOptions.CadRasterizationOptions();
        rasterizationOptions.PageWidth = 1600;
        rasterizationOptions.PageHeight = 1600;

        // Add desired layers
        rasterizationOptions.Layers = new string[] { "LayerA" };
        // Create an instance of PdfOptions
        Aspose.CAD.ImageOptions.PdfOptions pdfOptions = new Aspose.CAD.ImageOptions.PdfOptions();
        
        // Set the VectorRasterizationOptions property
        pdfOptions.VectorRasterizationOptions = rasterizationOptions;

        MyDir = MyDir + "conic_pyramid_layer_out.pdf";
        
        //Export the DXF to PDF
        image.Save(MyDir, pdfOptions);                
    }

For a complete list of features, enhancements, and bug fixes in this release please visit, Aspose.CAD for .NET 22.2 - Release Notes.

Supported Read CAD Formats

AutoCAD®: DWG, DGN, DWT, DWF, DWFx
Plotter Configuration: PC3
Data Model: IFC
CAD Data Exchange: IGES
3D Printing: STL
Vector Based Plotter: PLT
3D Package Design CFF2
3D Geometry: OBJ

Supported Read & Write CAD Formats

AutoCAD®: DXF (Write feature is partially supported)

Save CAD As

Fixed Layout: PDF
Raster Image: TIFF, JPEG, PNG, GIF, BMP

Platform Independence

Aspose.CAD for .NET supports .NET framework (ASP.NET applications & Windows applications) as well as .NET Core. It supports any 32-bit or 64-bit operating system where .NET or Mono framework is installed, this includes but is not limited to, Microsoft Windows desktop (XP, Vista, 7, 8, 10), Microsoft Windows Server (2003, 2008, 2012), Microsoft Azure, Linux (Ubuntu, OpenSUSE, CentOS, and others), and Mac OS X.

Get Started

Are you ready to give Aspose.CAD for .NET a try? Simply execute Install-Package Aspose.CAD from Package Manager Console in Visual Studio to fetch the NuGet package. If you already have Aspose.CAD for .NET and want to upgrade the version, please execute Update-Package Aspose.CAD to get the latest version.

Add Watermark to CAD using C# Code

You can execute the below code snippet to see how the API performs in your environment or check the GitHub Repository for other common usage scenarios.

CadText text = new CadText();
text.DefaultValue = "Watermark text";
text.TextHeight = 40;
text.FirstAlignment = new Cad3DPoint(300, 40);

Export DXF to PDF using C# Code

var rasterizationOptions = new CadRasterizationOptions();
rasterizationOptions.PageWidth = 500;
rasterizationOptions.PageHeight = 500;

rasterizationOptions.Layouts = new string[] {
  "Model"
};
var pdfOptions = new PdfOptions();
pdfOptions.VectorRasterizationOptions = rasterizationOptions;
cadImage.Save(dir + "output.pdf", pdfOptions);

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