在水印中工作

在 DWG 中添加水印

有时您希望在图纸上添加一些水印，以指示图纸的目的或是谁创建的。Aspose.CAD for .NET 允许您在 DWG 文件中添加水印。这可以通过创建具有特定文本高度、旋转、样式、调整等的 Text 或 MText 实体来完成，以便提供良好的外观。为此，API 提供了 CadMText 和 CadText 类。

示例代码

下面的代码展示了如何使用 Aspose.CAD for .NET 达到相同的目标。

            // The path to the documents directory.
            string MyDir = RunExamples.GetDataDir_DWGDrawings();
            

           using(CadImage cadImage = (CadImage)Image.Load(MyDir + "Drawing11.dwg")) {

                //add new MTEXT
                CadMText watermark = new CadMText();
                watermark.Text = "Watermark message";
                watermark.InitialTextHeight = 40;
                watermark.InsertionPoint = new Cad3DPoint(300, 40);
                watermark.LayerName = "0";
                cadImage.BlockEntities["*Model_Space"].AddEntity(watermark);

                // or add more simple entity like Text
                CadText text = new CadText();
                text.DefaultValue = "Watermark text";
                text.TextHeight = 40;
                text.FirstAlignment = new Cad3DPoint(300, 40);
                text.LayerName = "0";
                cadImage.BlockEntities["*Model_Space"].AddEntity(text);

                // export to pdf
                CadRasterizationOptions rasterizationOptions = new CadRasterizationOptions();
                rasterizationOptions.PageWidth = 1600;
                rasterizationOptions.PageHeight = 1600;
                rasterizationOptions.Layouts = new[] { "Model" };
                PdfOptions pdfOptions = new PdfOptions();
                pdfOptions.VectorRasterizationOptions = rasterizationOptions;
                cadImage.Save(MyDir + "AddWatermark_out.pdf", pdfOptions);

            }