调整 CAD 图纸大小

使用 Aspose.CAD for Java，开发人员可以在转换 CAD 格式时调整图纸的大小。本主题解释了使用 UnitType 枚举的自动调整或手动调整大小的方法，属于 com.aspose.cad.imageoptions 类。

调整 CAD 图纸大小

Aspose.CAD for Java 提供 UnitType 枚举以在转换 CAD 格式时调整图纸的大小。有两种方法可以调整图纸大小。

1. 自动调整大小
2. 使用 UnitType 枚举调整大小，属于 com.aspose.cad.imageoptions 类

对于自动调整大小，开发人员不需要提供 CadRasterizationOptions 类的宽度和高度属性。下面提供的代码片段是自动调整大小的示例。

// For complete examples and data files, please go to https://github.com/aspose-cad/Aspose.CAD-for-Java

// Path to source file
String sourceFilePath = "sample.dwg";

// Load a CAD drawing in an instance of Image
com.aspose.cad.Image objImage = com.aspose.cad.Image.load("sourceFilePath");

// Create an instance of BmpOptions class
com.aspose.cad.imageoptions.BmpOptions bmpOptions = new com.aspose.cad.imageoptions.BmpOptions();

// Create an instance of CadRasterizationOptions and set its various properties
com.aspose.cad.imageoptions.CadRasterizationOptions cadRasterizationOptions = 
        new com.aspose.cad.imageoptions.CadRasterizationOptions();

bmpOptions.setVectorRasterizationOptions(cadRasterizationOptions);
cadRasterizationOptions.setCenterDrawing(true);

// Set the layouts property
cadRasterizationOptions.setLayouts( new String[] { "Model" } );

// Export layout to BMP format
String outPath = sourceFilePath + ".bmp";
objImage.save(outPath, bmpOptions);

UnitType 枚举提供了在未设置宽度和高度属性时调整缩放的能力。下面提供的代码片段演示了如何使用 UnitType。

String dataDir = Utils.getDataDir(AdjustingCADDrawingSizeUsingUnitType.class) + "CADConversion/";
 // Path to source file
 String sourceFilePath = dataDir + "sample.dwg";
     
 // Load a CAD drawing in an instance of Image
Image image = Image.load(sourceFilePath);
		
 
 // Create an instance of BmpOptions class
 com.aspose.cad.imageoptions.BmpOptions bmpOptions = new com.aspose.cad.imageoptions.BmpOptions();

 // Create an instance of CadRasterizationOptions and set its various properties
 com.aspose.cad.imageoptions.CadRasterizationOptions cadRasterizationOptions = 
         new com.aspose.cad.imageoptions.CadRasterizationOptions();
 
 bmpOptions.setVectorRasterizationOptions(cadRasterizationOptions);

 // Set the UnitType property
 cadRasterizationOptions.setUnitType(com.aspose.cad.imageoptions.UnitType.Centimenter);

 // Set the layouts property
 cadRasterizationOptions.setLayouts( new String[] { "Model" } );
         
 // Export layout to BMP format
 String outPath = sourceFilePath + ".bmp";
 image.save(outPath, bmpOptions);