U3D

1//---------------------------------------------------------------------------------------
2// Copyright (c) 2001-2024 by Apryse Software Inc. All Rights Reserved.
3// Consult legal.txt regarding legal and license information.
4//---------------------------------------------------------------------------------------
5
6#import <OBJC/PDFNetOBJC.h>
7#import <Foundation/Foundation.h>
8
9void Create3DAnnotation(PTPDFDoc* doc, PTObj* annots)
10{
11    // ---------------------------------------------------------------------------------
12    // Create a 3D annotation based on U3D content. PDF 1.6 introduces the capability 
13    // for collections of three-dimensional objects, such as those used by CAD software, 
14    // to be embedded in PDF files.
15    PTObj * link_3D = [doc CreateIndirectDict];
16    [link_3D PutName: @"Subtype" name: @"3D"];
17
18    // Annotation location on the page
19    PTPDFRect * link_3D_rect = [[PTPDFRect alloc] init];
20    [link_3D_rect Set: 25 y1: 180 x2: 585 y2: 643];
21    [link_3D PutRect: @"Rect" x1: [link_3D_rect GetX1] y1: [link_3D_rect GetY1] x2: [link_3D_rect GetX2] y2: [link_3D_rect GetY2]];
22    [annots PushBack: link_3D];
23
24    // The 3DA entry is an activation dictionary (see Table 9.34 in the PDF Reference Manual) 
25    // that determines how the state of the annotation and its associated artwork can change.
26    PTObj * activation_dict_3D = [link_3D PutDict: @"3DA"];
27
28    // Set the annotation so that it is activated as soon as the page containing the 
29    // annotation is opened. Other options are: PV (page view) and XA (explicit) activation.
30    [activation_dict_3D PutName: @"A" name: @"PO"];  
31
32    // Embed U3D Streams (3D Model/Artwork).
33    {
34        PTMappedFile *u3d_file = [[PTMappedFile alloc] initWithFilename: @"../../TestFiles/dice.u3d"];
35        PTFilterReader *u3d_reader = [[PTFilterReader alloc] initWithFilter: u3d_file];
36
37        // To embed 3D stream without compression, you can omit the second parameter in CreateIndirectStream.
38        PTFilter *f = [[PTFilter alloc] init];
39        PTObj * u3d_data_dict = [doc CreateIndirectStream: u3d_reader filter_chain: [[PTFlateEncode alloc] initWithInput_filter: [[PTFilter alloc] init] compression_level: -1 buf_sz: 256]];
40        [u3d_data_dict PutName: @"Subtype" name: @"U3D"];
41        [link_3D Put: @"3DD" obj: u3d_data_dict];
42    }
43
44    // Set the initial view of the 3D artwork that should be used when the annotation is activated.
45    PTObj * view3D_dict = [link_3D PutDict: @"3DV"];
46    {
47        [view3D_dict PutString: @"IN" value: @"Unnamed"];
48        [view3D_dict PutString: @"XN" value: @"Default"];
49        [view3D_dict PutName: @"MS" name: @"M"];
50        [view3D_dict PutNumber: @"CO" value: 27.5];
51
52        // A 12-element 3D transformation matrix that specifies a position and orientation 
53        // of the camera in world coordinates.
54        PTObj * tr3d = [view3D_dict PutArray: @"C2W"]; 
55        [tr3d PushBackNumber: 1]; [tr3d PushBackNumber: 0]; [tr3d PushBackNumber: 0]; 
56        [tr3d PushBackNumber: 0]; [tr3d PushBackNumber: 0]; [tr3d PushBackNumber: -1];
57        [tr3d PushBackNumber: 0]; [tr3d PushBackNumber: 1]; [tr3d PushBackNumber: 0]; 
58        [tr3d PushBackNumber: 0]; [tr3d PushBackNumber: -27.5]; [tr3d PushBackNumber: 0];
59
60    }
61
62    // Create annotation appearance stream, a thumbnail which is used during printing or
63    // in PDF processors that do not understand 3D data.
64    PTObj * ap_dict = [link_3D PutDict: @"AP"];
65    {
66        PTElementBuilder *builder = [[PTElementBuilder alloc] init];
67        PTElementWriter *writer = [[PTElementWriter alloc] init];
68        [writer WriterBeginWithSDFDoc: [doc GetSDFDoc] compress: true];
69
70        NSString *thumb_pathname = @"../../TestFiles/dice.jpg";
71        PTImage *image = [PTImage CreateWithFile: [doc GetSDFDoc] filename: thumb_pathname encoder_hints: [[PTObj alloc] init]];
72        [writer WritePlacedElement: [builder CreateImageWithCornerAndScale: image x: 0.0 y: 0.0 hscale: [link_3D_rect Width] vscale: [link_3D_rect Height]]];
73
74        PTObj * normal_ap_stream = [writer End];
75        [normal_ap_stream PutName: @"Subtype" name: @"Form"];
76        [normal_ap_stream PutRect: @"BBox" x1: 0 y1: 0 x2: [link_3D_rect Width] y2: [link_3D_rect Height]];
77        [ap_dict Put: @"N" obj: normal_ap_stream];
78    }
79}
80
81int main(int argc, char *argv[])
82{
83    @autoreleasepool {
84        int ret = 0;
85        [PTPDFNet Initialize: 0];
86
87        @try  
88        {     
89            PTPDFDoc *doc = [[PTPDFDoc alloc] init];
90            PTPDFRect * rect = [[PTPDFRect alloc] init]; 
91            [rect Set: 0 y1: 0 x2: 612 y2: 792];
92            PTPage *page = [doc PageCreate: rect];
93            [doc PagePushBack: page];
94            PTObj * annots = [doc CreateIndirectArray];
95            [[page GetSDFObj] Put: @"Annots" obj: annots];
96        
97            Create3DAnnotation(doc, annots);
98            [doc SaveToFile: @"../../TestFiles/Output/dice_u3d.pdf" flags: e_ptlinearized];
99            NSLog(@"Done");
100        }
101        @catch(NSException *e)
102        {
103            NSLog(@"%@", e.reason);
104            ret = 1;
105        }
106        [PTPDFNet Terminate: 0];
107        return ret;
108    }
109}