I am using iText7 (C#) to create the pdf. I need to add a u3d picture to the exising pdf. I can find the example (http://developers.itextpdf.com/examples/itext-action-second-edition/chapter-16#619-pdf3d.java) but it is java one. Can anyone help to give me an example on .net C#?
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5 回答
3
链接示例适用于 iText5，而不是 iText7。在 iText7 这个例子看起来像这样
public static final String DEST = "./target/test/resources/book/part4/chapter16/Listing_16_16_Pdf3D.pdf";
public static String RESOURCE = "./src/test/resources/img/teapot.u3d";
public static void main(String args[]) throws Exception {
new Listing_16_16_Pdf3D().manipulatePdf(DEST);
}
public void manipulatePdf(String dest) throws Exception {
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
Document doc = new Document(pdfDoc);
Rectangle rect = new Rectangle(100, 400, 400, 400);
PdfStream stream3D = new PdfStream(pdfDoc, new FileInputStream(RESOURCE));
stream3D.put(PdfName.Type, new PdfName("3D"));
stream3D.put(PdfName.Subtype, new PdfName("U3D"));
stream3D.setCompressionLevel(CompressionConstants.DEFAULT_COMPRESSION);
stream3D.flush();
PdfDictionary dict3D = new PdfDictionary();
dict3D.put(PdfName.Type, new PdfName("3DView"));
dict3D.put(new PdfName("XN"), new PdfString("Default"));
dict3D.put(new PdfName("IN"), new PdfString("Unnamed"));
dict3D.put(new PdfName("MS"), PdfName.M);
dict3D.put(new PdfName("C2W"),
new PdfArray(new float[]{1, 0, 0, 0, 0, -1, 0, 1, 0, 3, -235, 28}));
dict3D.put(PdfName.CO, new PdfNumber(235));
Pdf3DAnnotation annot = new Pdf3DAnnotation(rect, stream3D);
annot.setContents(new PdfString("3D Model"));
annot.setDefaultInitialView(dict3D);
pdfDoc.addNewPage().addAnnotation(annot);
doc.close();
}
或者，如果你想在 C# 中使用它（没有在本地运行它，但 Visual Studio 没有抱怨语法）
public void manipulatePdf(String dest) {
PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
Document doc = new Document(pdfDoc);
Rectangle rect = new Rectangle(100, 400, 400, 400);
PdfStream stream3D = new PdfStream(pdfDoc, new FileInputStream(RESOURCE));
stream3D.Put(PdfName.Type, new PdfName("3D"));
stream3D.Put(PdfName.Subtype, new PdfName("U3D"));
stream3D.SetCompressionLevel(CompressionConstants.DEFAULT_COMPRESSION);
stream3D.Flush();
PdfDictionary dict3D = new PdfDictionary();
dict3D.Put(PdfName.Type, new PdfName("3DView"));
dict3D.Put(new PdfName("XN"), new PdfString("Default"));
dict3D.Put(new PdfName("IN"), new PdfString("Unnamed"));
dict3D.Put(new PdfName("MS"), PdfName.M);
dict3D.Put(new PdfName("C2W"),
new PdfArray(new float[] { 1, 0, 0, 0, 0, -1, 0, 1, 0, 3, -235, 28 }));
dict3D.Put(PdfName.CO, new PdfNumber(235));
Pdf3DAnnotation annot = new Pdf3DAnnotation(rect, stream3D);
annot.SetContents(new PdfString("3D Model"));
annot.SetDefaultInitialView(dict3D);
pdfDoc.AddNewPage().AddAnnotation(annot);
doc.Close();
}
于 2017-07-12T15:07:00.783 回答
0
The iText codebase for .net was designed to be an (almost) exact mirror of the java one.
Apart from code conventions (such as method names starting with an uppercase), you should be able to use java code in .net.
This also explains why we typically do not post the code for .net. I suggest you simply copy/paste the java code, change the method names to account for code-convention, and attempt to compile it.
如果有的话，它会给你一个代码示例，你可以在这里发布，让你发布更明智。
于 2017-07-12T14:28:54.737 回答
0
这是使用 c# 将 u3d 文件打印成 pdf 的工作代码
FileStream stream = new FileStream("E:\\Testingfolder\\u3dpdf\\DoctoPdf.pdf", FileMode.Open, FileAccess.Read);
String RESOURCE;
RESOURCE = "E:\\Testingfolder\\u3dpdf\\Testu3d.u3d";
iTextSharp.text.Rectangle rect;
using (iTextSharp.text.Document document = new iTextSharp.text.Document())
{
PdfWriter pdfwriter = PdfWriter.GetInstance(document, stream);
// step 3
document.Open();
// step 4
rect = new iTextSharp.text.Rectangle(100, 400, 500, 800);
rect.Border = iTextSharp.text.Rectangle.BOX;
rect.BorderWidth = 0.5f;
rect.BorderColor = new BaseColor(0xFF, 0x00, 0x00);
document.Add(rect);
document.SetMargins(129,259,647,1416);
PdfIndirectObject streamObject = null;
using (FileStream fs =
new FileStream(RESOURCE, FileMode.Open, FileAccess.Read))
{
PdfStream stream3D = new PdfStream(fs, pdfwriter);
stream3D.Put(PdfName.TYPE, new PdfName("3D"));
stream3D.Put(PdfName.SUBTYPE, new PdfName("U3D"));
stream3D.FlateCompress();
streamObject = pdfwriter.AddToBody(stream3D);
stream3D.WriteLength();
}
PdfDictionary dict3D = new PdfDictionary();
dict3D.Put(PdfName.TYPE, new PdfName("3DView"));
dict3D.Put(new PdfName("XN"), new PdfString("Default"));
dict3D.Put(new PdfName("IN"), new PdfString("Unnamed"));
dict3D.Put(new PdfName("MS"), PdfName.M);
dict3D.Put(new PdfName("C2W"),
new PdfArray(new float[] { 1, 0, 0, 0, 0, -1, 0, 1, 0, 3, -235, 28 }));
dict3D.Put(PdfName.CO, new PdfNumber(235));
PdfIndirectObject dictObject = pdfwriter.AddToBody(dict3D);
PdfAnnotation annot = new PdfAnnotation(pdfwriter, rect);
annot.Put(PdfName.CONTENTS, new PdfString("3D Model"));
annot.Put(PdfName.SUBTYPE, new PdfName("3D"));
annot.Put(PdfName.TYPE, PdfName.ANNOT);
annot.Put(new PdfName("3DD"), streamObject.IndirectReference);
annot.Put(new PdfName("3DV"), dictObject.IndirectReference);
PdfAppearance ap = pdfwriter.DirectContent.CreateAppearance(
rect.Width, rect.Height
);
annot.SetAppearance(PdfAnnotation.APPEARANCE_NORMAL, ap);
annot.SetPage();
pdfwriter.AddAnnotation(annot);
}
于 2019-05-22T06:58:56.317 回答
0
您也可以在使用 spirepdf 的 c# 中尝试以下代码
//第一步：初始化一个新的PdfDocuemnt对象，给PDF文档添加一个空白页。
PdfDocument doc = new PdfDocument();
PdfPageBase page = doc.Pages.Add();
//Step 2: Draw a rectangle on the page to define the canvas area for the 3D file.
Rectangle rt = new Rectangle(0, 80, 200, 200);
//Step 3: Initialize a new object of Pdf3DAnnotation, load the.u3d file as 3D annotation.
Pdf3DAnnotation annotation = new Pdf3DAnnotation(rt, "E:\\Testingfolder\\u3dpdf\\BRO_JR_6910K Femur - Bone Model.stl");
annotation.Activation = new Pdf3DActivation();
annotation.Activation.ActivationMode = Pdf3DActivationMode.PageOpen;
//Step 4: Define a 3D view mode.
Pdf3DView View = new Pdf3DView();
View.Background = new Pdf3DBackground(new PdfRGBColor());
View.ViewNodeName = "test";
View.RenderMode = new Pdf3DRendermode(Pdf3DRenderStyle.Solid);
View.InternalName = "test";
View.LightingScheme = new Pdf3DLighting();
View.LightingScheme.Style = Pdf3DLightingStyle.Day;
//Step 5: Set the 3D view mode for the annotation.
annotation.Views.Add(View);
//Step 6: Add the annotation to PDF.
page.AnnotationsWidget.Add(annotation);
//Step 7: Save the file.
doc.SaveToFile("E:\\Testingfolder\\u3dpdf\\Create3DPdf.pdf", FileFormat.PDF);
于 2019-05-22T07:02:32.893 回答
-2
你的问题解决了吗？如果没有，您可能也对这个替代解决方案感兴趣 - 使用 C# 中的 Spire.PDF 将 3D 交互式图形嵌入 PDF 文档。
PdfDocument doc = new PdfDocument();
PdfPageBase page = doc.Pages.Add();
Rectangle rt = new Rectangle(0, 80, 200, 200);
Pdf3DAnnotation annotation = new Pdf3DAnnotation(rt, "teapot.u3d");
annotation.Activation = new Pdf3DActivation();
annotation.Activation.ActivationMode = Pdf3DActivationMode.PageOpen;
Pdf3DView View= new Pdf3DView();
View.Background = new Pdf3DBackground(new PdfRGBColor(Color.Purple));
View.ViewNodeName = "test";
View.RenderMode = new Pdf3DRendermode(Pdf3DRenderStyle.Solid);
View.InternalName = "test";
View.LightingScheme = new Pdf3DLighting();
View.LightingScheme.Style = Pdf3DLightingStyle.Day;
annotation.Views.Add(View);
page.AnnotationsWidget.Add(annotation);
doc.SaveToFile("Create3DPdf.pdf", FileFormat.PDF);
于 2017-07-13T02:54:25.937 回答