Aspose.CAD for .NET是一个独立的AutoCAD处理API。它提供将DWG，DWF和DXF文件转换为高质量PDF和光栅图像的功能。开发人员可以从AutoCAD文件中选择和转换特定的布局和图层，并轻松跟踪整个文件转换过程。
近期Aspose.CAD for .Net（点击下载）更新至最新版v19.7，新增支持DWG R11，R12格式，增强加载大型CAD文件，支持设置自定义视图以进行渲染，接下来，我们通过示例来了解新增功能！
加载大型DWG文件
Aspose.CAD for .NET提供了使用CadImage类打开非常大的DWG文件的功能。现在，您可以使用下面给出的示例示例轻松打开大文件。
//文档目录的路径.
string MyDir = RunExamples.GetDataDir_DWGDrawings();
string filePathDWG = MyDir + "TestBigFile.dwg";
string filePathFinish = MyDir+ "TestBigFile.dwg.pdf";
Stopwatch stopWatch = new Stopwatch();
try
{
stopWatch.Start();
using (CadImage cadImage = (CadImage)Image.Load(filePathDWG))
{
stopWatch.Stop();
// 将经过的时间作为TimeSpan值获取.
TimeSpan ts = stopWatch.Elapsed;
//格式化并显示TimeSpan值.
string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}",
ts.Hours, ts.Minutes, ts.Seconds,
ts.Milliseconds / 10);
Console.WriteLine("RunTime for loading " + elapsedTime);
CadRasterizationOptions rasterizationOptions = new CadRasterizationOptions();
rasterizationOptions.PageWidth = 1600;
rasterizationOptions.PageHeight = 1600;
PdfOptions pdfOptions = new PdfOptions();
pdfOptions.VectorRasterizationOptions = rasterizationOptions;
stopWatch = new Stopwatch();
stopWatch.Start();
cadImage.Save(filePathFinish, pdfOptions);
stopWatch.Stop();
//将经过的时间作为TimeSpan值获取.
ts = stopWatch.Elapsed;
//格式化并显示TimeSpan值.
elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}",
ts.Hours, ts.Minutes, ts.Seconds,
ts.Milliseconds / 10);
Console.WriteLine("RunTime for converting " + elapsedTime);
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
设置自定义视图以进行渲染
Aspose.CAD允许您为模型布局设置自定义视点。使用VectorRasterizationOptions可以设置自定义视点。以下示例显示如何设置自定义视点。
//文档目录的路径.
string MyDir = RunExamples.GetDataDir_ConvertingCAD();
string sourceFilePath = MyDir + "conic_pyramid.dxf";
var outPath = Path.Combine(MyDir, "FreePointOfView_out.jpg");
using (CadImage cadImage = (CadImage)Image.Load(sourceFilePath))
{
JpegOptions options = new JpegOptions
{
VectorRasterizationOptions = new CadRasterizationOptions
{
PageWidth = 1500, PageHeight = 1500
}
};
float xAngle = 10; //沿X轴的旋转角度
float yAngle = 30; //沿Y轴的旋转角度
float zAngle = 40; //沿Z轴的旋转角度
((CadRasterizationOptions)(options.VectorRasterizationOptions)).ObserverPoint = new ObserverPoint(xAngle, yAngle, zAngle);
cadImage.Save(outPath, options);
}