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Sejak rilis 24.2, pustaka Aspose.PDF for .NET memungkinkan ekstraksi data vektor dari file PDF. Potongan kode berikut membuat objek Document baru menggunakan beberapa data input, menginisialisasi ‘GraphicsAbsorber’ (GraphicsAbsorber mengembalikan data vektor) untuk menangani elemen grafis, dan kemudian mengunjungi halaman kedua dari dokumen untuk mengekstrak dan menganalisis elemen-elemen ini. Ini mengambil berbagai properti dari elemen grafis kedua, seperti operator terkait, persegi panjang, dan posisi.
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ProcessGraphicsInPDF()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "input.pdf"))
{
// Instantiate a new GraphicsAbsorber object to process graphic elements
using (var grAbsorber = new Aspose.Pdf.Vector.GraphicsAbsorber())
{
// Visit the second page of the document to extract graphic elements
grAbsorber.Visit(document.Pages[1]);
// Retrieve the list of graphic elements from the GraphicsAbsorber
var elements = grAbsorber.Elements;
// Access the operators associated with the second graphic element
var operations = elements[1].Operators;
// Retrieve the rectangle associated with the second graphic element
var rectangle = elements[1].Rectangle;
// Get the position of the second graphic element
var position = elements[1].Position;
}
}
}
Untuk ekstraksi Data Vektor dari PDF, kita dapat menggunakan ekstraktor SVG:
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void SaveVectorGraphicsFromPage()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "VectorGraphics.pdf"))
{
// Save vector graphics from the first page to an SVG file
document.Pages[1].TrySaveVectorGraphics(dataDir + "VectorGraphics_out.svg");
}
}
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExtractAllSubpathsToImagesSeparately()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
// Path to the directory where SVGs will be saved
var svgDirPath = dataDir + "SvgOutput/";
// Create extraction options
var options = new Aspose.Pdf.Vector.SvgExtractionOptions
{
ExtractEverySubPathToSvg = true
};
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "VectorGraphics.pdf"))
{
// Get the first page of the document
var page = document.Pages[1];
// Create SVG extractor
var extractor = new Aspose.Pdf.Vector.SvgExtractor(options);
// Extract SVGs from the page
extractor.Extract(page, svgDirPath);
}
}
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExtractListOfElementsToSingleImage()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
// Initialize the list of graphic elements
var elements = new List<Aspose.Pdf.Vector.GraphicElement>();
// Example: Fill elements list with needed graphic elements (implement your logic here)
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "VectorGraphics.pdf"))
{
// Get the first page of the document
var page = document.Pages[1];
// Use SvgExtractor to extract SVGs
var svgExtractor = new Aspose.Pdf.Vector.SvgExtractor();
// Extract SVGs from graphic elements on the page
svgExtractor.Extract(elements, page, Path.Combine(dataDir, "SvgOutput", "VectorGraphics_out.svg"));
}
}
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExtractSingleElement()
{
// The path to the documents directory
var dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();
// Open PDF document
using (var document = new Aspose.Pdf.Document(dataDir + "VectorGraphics.pdf"))
{
// Create a GraphicsAbsorber object to extract graphic elements
var graphicsAbsorber = new Aspose.Pdf.Vector.GraphicsAbsorber();
// Get the first page of the document
var page = document.Pages[1];
// Process the page to extract graphic elements
graphicsAbsorber.Visit(page);
// Extract the graphic element (XFormPlacement) and save it as SVG
var xFormPlacement = graphicsAbsorber.Elements[1] as Aspose.Pdf.Vector.XFormPlacement;
xFormPlacement.Elements[2].SaveToSvg(Path.Combine(dataDir, "SvgOutput", "VectorGraphics_out.svg"));
}
}
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