From 3dcbe4a0ebfb52cf263c7c4dc981f88ea1f0db89 Mon Sep 17 00:00:00 2001
From: Zhuangkh <einsam0413@gmail.com>
Date: Fri, 12 May 2023 15:37:43 +0800
Subject: [PATCH] add default rendermode & light

---
 PDFGenerator/Program.cs | 46 ++++++++++++++++++++++++++---------------
 1 file changed, 29 insertions(+), 17 deletions(-)

diff --git a/PDFGenerator/Program.cs b/PDFGenerator/Program.cs
index 47d3718..8fbbde5 100644
--- a/PDFGenerator/Program.cs
+++ b/PDFGenerator/Program.cs
@@ -6,6 +6,7 @@ using iText.Kernel.Pdf.Canvas;
 using iText.Layout;
 using iText.Layout.Element;
 using Newtonsoft.Json;
+using Org.BouncyCastle.Utilities.IO;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -36,19 +37,15 @@ public class Program
 
     public static void GeneratePDF(string idtf, string view, string pdf)
     {
-        var u3d = System.IO.Path.GetTempFileName();
+        var u3d = System.IO.Path.GetRandomFileName();
         GenerateU3D(idtf, u3d);
 
         var writer = new PdfWriter(pdf);
         PdfDocument pdfDoc = new PdfDocument(writer);
         var size = PageSize.A4;
-
         Document doc = new Document(pdfDoc);
-        Rectangle rect = new Rectangle(50, 50, size.GetWidth() - 100, size.GetHeight() - 100);
-
 
         var views = Generate3DView(view);
-
         PdfStream stream3D = new PdfStream(pdfDoc, new FileStream(u3d, FileMode.Open));
         stream3D.Put(PdfName.Type, new PdfName("3D"));
         stream3D.Put(PdfName.Subtype, new PdfName("U3D"));
@@ -56,15 +53,14 @@ public class Program
         stream3D.SetCompressionLevel(CompressionConstants.DEFAULT_COMPRESSION);
         stream3D.Flush();
 
-
-
+        Rectangle rect = new Rectangle(50, 50, size.GetWidth() - 100, size.GetHeight() - 100);
         Pdf3DAnnotation annot = new Pdf3DAnnotation(rect, stream3D);
         annot.SetContents(new PdfString("3D Model"));
-        annot.SetDefaultInitialView(views.First());
+        annot.Put(PdfName._3DV, PdfName.L);//default view
         var page = pdfDoc.AddNewPage(size).SetRotation(90);
         page.AddAnnotation(annot);
-       // PdfCanvas canvas = new PdfCanvas(page);
 
+        //logo
         ImageData imageData = ImageDataFactory.Create(System.IO.Directory.GetParent(Assembly.GetExecutingAssembly().Location) + "\\logo.png");
         Image image = new Image(imageData);
         image.SetHeight(25);
@@ -91,24 +87,40 @@ public class Program
                 PdfDictionary dict3D = new PdfDictionary();
                 dict3D.Put(PdfName.Type, new PdfName("3DView"));
                 dict3D.Put(new PdfName("XN"), new PdfString(item.Name));
-
-                //dict3D.Put(new PdfName("IN"), new PdfString("Unnamed"));
+                dict3D.Put(new PdfName("IN"), new PdfString(item.Name));
+                dict3D.Put(new PdfName("RM"), RenderMode());
+                dict3D.Put(new PdfName("LS"), RenderLight());
                 dict3D.Put(new PdfName("MS"), PdfName.M);
-                //dict3D.Put(new PdfName("C2W"),
-                //        new PdfArray(new double[] { item.Parents[0].Transform.c0r0, item.Parents[0].Transform.c0r1, item.Parents[0].Transform.c0r2,
-                //                                    item.Parents[0].Transform.c1r0, item.Parents[0].Transform.c1r1, item.Parents[0].Transform.c1r2,
-                //                                    item.Parents[0].Transform.c2r0, item.Parents[0].Transform.c2r1, item.Parents[0].Transform.c2r2,
-                //                                    item.Parents[0].Transform.c3r0, item.Parents[0].Transform.c3r1, item.Parents[0].Transform.c3r2 }));  
+                dict3D.Put(new PdfName("C2W"),
+                        new PdfArray(new double[] { item.Parents[0].Transform.c0r0, item.Parents[0].Transform.c0r1, item.Parents[0].Transform.c0r2,
+                                                    item.Parents[0].Transform.c1r0, item.Parents[0].Transform.c1r1, item.Parents[0].Transform.c1r2,
+                                                    item.Parents[0].Transform.c2r0, item.Parents[0].Transform.c2r1, item.Parents[0].Transform.c2r2,
+                                                    item.Parents[0].Transform.c3r0, item.Parents[0].Transform.c3r1, item.Parents[0].Transform.c3r2 }));
                 dict3D.Put(new PdfName("C2W"),
                         new PdfArray(new double[] { item.Parents[0].Transform.c0r0, item.Parents[0].Transform.c1r0, item.Parents[0].Transform.c2r0,
                                                     item.Parents[0].Transform.c0r1, item.Parents[0].Transform.c1r1, item.Parents[0].Transform.c2r1,
                                                     item.Parents[0].Transform.c0r2, item.Parents[0].Transform.c1r2, item.Parents[0].Transform.c2r2,
                                                     item.Parents[0].Transform.c3r0, item.Parents[0].Transform.c3r1, item.Parents[0].Transform.c3r2 }));
-                //dict3D.Put(PdfName.CO, new PdfNumber(235));
+                dict3D.Flush();
                 list.Add(dict3D);
             }
         }
 
         return list;
     }
+
+    private static PdfDictionary RenderMode()
+    {
+        PdfDictionary dict3D = new PdfDictionary();
+        dict3D.Put(PdfName.Type, new PdfName("3DRenderMode"));
+        dict3D.Put(PdfName.Subtype, new PdfName("SolidOutline"));
+        return dict3D;
+    }
+    private static PdfDictionary RenderLight()
+    {
+        PdfDictionary dict3D = new PdfDictionary();
+        dict3D.Put(PdfName.Type, new PdfName("3DLightingScheme"));
+        dict3D.Put(PdfName.Subtype, new PdfName("Day"));
+        return dict3D;
+    }
 }