向下移动绘图以添加标题

如何向下移动绘图以添加标题

问题： 如何向下移动绘图以添加标题 (CADNET-980)。

提示： 为此，创建一个带有参数的 CadText 对象，将该块添加到绘图中，然后使用 UpdateSize 更新绘图的新尺寸，添加一个多线段作为绘图的框架，将多线段添加到 BlockEntities["*Model_Space"] 并再次使用 UpdateSize 更新。

示例：

using (CadImage cadImage = (CadImage)Image.Load(GetPath(fileName)))
{
    CadText text = new CadText();
    text.DefaultValue = "CAD Drawing";
    text.TextHeight = 5;

    // second alignment point is required in case text is aligned (first alignment point is ignored)
    text.SecondAlignmentPoint = new Cad3DPoint(cadImage.Width / 2, cadImage.Height - text.TextHeight);
    
    text.HorizontalJustification = 1;
    text.ObjectHandle = "bebebebe";//Guid.NewGuid().ToString();
    text.LayerName = "0";
    text.SoftOwner = cadImage.Layouts["Model"].BlockTableRecordHandle;
    cadImage.BlockEntities["*Model_Space"].AddEntity(text);


    // should be called because we need to add one more entity using new size of image
    cadImage.UpdateSize();

    // add polyline that is a border around the drawing
    CadLwPolyline lwPolyline = new CadLwPolyline();
    lwPolyline.Coordinates = new List<Cad2DPoint>();
    lwPolyline.Coordinates.Add(new Cad2DPoint(cadImage.MinPoint.X - 20, cadImage.MinPoint.Y - 20));
    lwPolyline.Coordinates.Add(new Cad2DPoint(cadImage.MinPoint.X - 20, cadImage.MaxPoint.Y + 20));
    lwPolyline.Coordinates.Add(new Cad2DPoint(cadImage.MaxPoint.X + 20, cadImage.MaxPoint.Y + 20));
    lwPolyline.Coordinates.Add(new Cad2DPoint(cadImage.MaxPoint.X + 20, cadImage.MinPoint.Y - 20));


    cadImage.BlockEntities["*Model_Space"].AddEntity(lwPolyline);

    // should be called because adding of new entity may change size of drawing
    cadImage.UpdateSize();

   // remove border polyline after drawing is updated
    cadImage.RemoveEntity(lwPolyline);

    CadRasterizationOptions rasterizationOptions = new CadRasterizationOptions();

    PdfOptions pdfOptions = new PdfOptions();
    pdfOptions.VectorRasterizationOptions = rasterizationOptions;

    cadImage.Save(outPath, pdfOptions);
}