Рисуване на DGN формат като част от DWG
Aspose.CAD за Java позволява на разработчиците да експортират DWG файл с вграден DGN подложен файл. По-долу е показан код, който демонстрира как да се достъпи DGN подложен файл в DWG файл по време на експорта на DWG файла.
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| // Input and Output file paths | |
| String dataDir = Utils.getDataDir(ExportDGNAsPartofDWG.class) + "ExportingDGN/"; | |
| // Input and Output file paths | |
| String fileName = dataDir + "BlockRefDgn.dwg"; | |
| String outPath = dataDir +"BlockRefDgn.dwg.pdf"; | |
| // Create an instance of PdfOptions class as we are exporting the DWG file to PDF format | |
| com.aspose.cad.imageoptions.PdfOptions exportOptions = new com.aspose.cad.imageoptions.PdfOptions(); | |
| // Load any existing DWG file as image and convert it to CadImage type | |
| com.aspose.cad.fileformats.cad.CadImage cadImage = (com.aspose.cad.fileformats.cad.CadImage) com.aspose.cad.Image.load(fileName); | |
| // Go through each entity inside the DWG file | |
| for (com.aspose.cad.fileformats.cad.cadobjects.CadBaseEntity baseEntity : cadImage.getEntities()) | |
| { | |
| // Check if entity is an image definition | |
| if (baseEntity.getTypeName() == com.aspose.cad.fileformats.cad.cadconsts.CadEntityTypeName.DGNUNDERLAY) | |
| { | |
| com.aspose.cad.fileformats.cad.cadobjects.CadDgnUnderlay dgnFile = (com.aspose.cad.fileformats.cad.cadobjects.CadDgnUnderlay)baseEntity; | |
| // Get external reference to object | |
| System.out.println(dgnFile.getUnderlayPath()); | |
| } | |
| } | |
| // Define settings for CadRasterizationOptions object | |
| com.aspose.cad.imageoptions.CadRasterizationOptions vectorRasterizationOptions = new com.aspose.cad.imageoptions.CadRasterizationOptions(); | |
| vectorRasterizationOptions.setPageWidth(1600); | |
| vectorRasterizationOptions.setPageHeight(1600); | |
| vectorRasterizationOptions.setLayouts(new String[] { "Model" }); | |
| vectorRasterizationOptions.setAutomaticLayoutsScaling(false); | |
| vectorRasterizationOptions.setNoScaling(true); | |
| vectorRasterizationOptions.setBackgroundColor(com.aspose.cad.Color.getBlack()); | |
| vectorRasterizationOptions.setDrawType(com.aspose.cad.fileformats.cad.CadDrawTypeMode.UseObjectColor); | |
| // Set Vector Rasterization Options | |
| exportOptions.setVectorRasterizationOptions(vectorRasterizationOptions); | |
| // Export the DWG to PDF by calling Save method | |
| cadImage.save(outPath, exportOptions); | |
Поддръжка на 3D същества за DGN v7
Aspose.CAD за Java API въведе функционалност за зареждане на DGN AutoCAD файл и поддръжка на 3D същества за DGN v7. Класът CadImage служи за целта. Всеки DGN образ поддържа 9 предварително дефинирани изгледи. Те са пронумерирани от 1 до 9. Ако изгледът не е дефиниран при експортиране, за форматите с множество страници (като PDF) всички изгледи ще бъдат експортирани, всеки на отделна страница. 3D съществата се поддържат върху формата на файл DGN, както и 2D. VectorRasterizationOptions.TypeOfEntities вече не се използва за формата DGN (и двете - 2D и 3D се поддържат едновременно).
Примерен код за разглеждане на поддържаните DGN елементи.
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| String fileName = dataDir + "Nikon_D90_Camera.dgn"; | |
| String outFile = dataDir + "Nikon_D90_Camera.dgn"; | |
| DgnImage objImage = (DgnImage)com.aspose.cad.Image.load(fileName); | |
| PdfOptions options = new PdfOptions(); | |
| CadRasterizationOptions vectorOptions = new CadRasterizationOptions(); | |
| vectorOptions.setPageWidth(1500); | |
| vectorOptions.setPageHeight(1500); | |
| vectorOptions.setAutomaticLayoutsScaling(true); | |
| vectorOptions.setBackgroundColor(Color.getBlack()); | |
| vectorOptions.setLayouts(new String[] { "1", "2", "3", "9" });//only export 4 (1,2,3 and 9) views | |
| options.setVectorRasterizationOptions(vectorOptions); | |
| objImage.save(outFile, options); | |
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| // Input and Output file paths | |
| String fileName = "BlockRefDgn.dwg"; | |
| String outPath = "BlockRefDgn.dwg.pdf"; | |
| DgnImage dgnImage = (DgnImage)Image.load(dataDir); | |
| { | |
| for (DgnDrawingElementBase element : dgnImage.getElements()) | |
| { | |
| switch (element.getMetadata().getType()) | |
| { | |
| case DgnElementType.Line: | |
| case DgnElementType.Ellipse: | |
| case DgnElementType.Curve: | |
| case DgnElementType.BSplineCurveHeader: | |
| case DgnElementType.Arc: | |
| case DgnElementType.Shape: | |
| case DgnElementType.PolyLine: | |
| case DgnElementType.TextNode: | |
| case DgnElementType.Text: | |
| case DgnElementType.ComplexShapeHeader: | |
| case DgnElementType.ComplexChainHeader: | |
| { | |
| //previously supported entities, now supported also for 3D | |
| break; | |
| } | |
| case DgnElementType.SolidHeader3D: | |
| case DgnElementType.Cone: | |
| case DgnElementType.CellHeader: | |
| { | |
| //supported 3D entities | |
| break; | |
| } | |
| } |