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1<?php
2
3declare(strict_types=1);
4
5namespace Phpdftk\Pdf\Core\ThreeD;
6
7use Phpdftk\Pdf\Core\PdfArray;
8use Phpdftk\Pdf\Core\PdfBoolean;
9use Phpdftk\Pdf\Core\PdfDictionary;
10use Phpdftk\Pdf\Core\PdfName;
11use Phpdftk\Pdf\Core\PdfNumber;
12use Phpdftk\Pdf\Core\PdfObject;
13use Phpdftk\Pdf\Core\PdfReference;
14use Phpdftk\Pdf\Core\PdfString;
15use Phpdftk\Pdf\Core\PdfVersion;
16use Phpdftk\Pdf\Core\RequiresPdfVersion;
17
18/**
19 * 3D view dictionary (/Type /3DView) — ISO 32000-2 §13.6.4.
20 *
21 * Describes a named camera view of a 3D model.
22 */
23#[RequiresPdfVersion(PdfVersion::V1_6)]
24class ThreeDView extends PdfObject
25{
26    public const PDF_TYPE = '3DView';
27
28    public PdfString $xn;                                 // /XN  external name (required)
29    public ?PdfString $in = null;                         // /IN  internal name
30    public ?PdfName $ms = null;                           // /MS  matrix source (M, U3D)
31    public ?PdfArray $c2w = null;                         // /C2W camera-to-world matrix
32    public ?float $co = null;                             // /CO  center-of-orbit distance
33    public ?PdfDictionary $p = null;                      // /P   projection dict
34    public ?PdfArray $o = null;                           // /O   overlay array
35    public ThreeDBackground|PdfReference|null $bg = null; // /BG  background
36    public ThreeDRenderMode|PdfReference|null $rm = null; // /RM  render mode
37    public ThreeDLightingScheme|PdfReference|null $ls = null; // /LS lighting
38    public ?PdfArray $sa = null;                          // /SA  cross sections
39    public ?PdfArray $na = null;                          // /NA  node overrides
40    public ?bool $nr = null;                              // /NR  render rail
41
42    public function __construct(string $externalName)
43    {
44        $this->xn = new PdfString($externalName);
45    }
46
47    public function toPdf(): string
48    {
49        $dict = new PdfDictionary();
50        $dict->set('Type', new PdfName(self::PDF_TYPE));
51        $dict->set('XN', $this->xn);
52        if ($this->in !== null) {
53            $dict->set('IN', $this->in);
54        }
55        if ($this->ms !== null) {
56            $dict->set('MS', $this->ms);
57        }
58        if ($this->c2w !== null) {
59            $dict->set('C2W', $this->c2w);
60        }
61        if ($this->co !== null) {
62            $dict->set('CO', new PdfNumber($this->co));
63        }
64        if ($this->p !== null) {
65            $dict->set('P', $this->p);
66        }
67        if ($this->o !== null) {
68            $dict->set('O', $this->o);
69        }
70        if ($this->bg !== null) {
71            $dict->set('BG', $this->bg);
72        }
73        if ($this->rm !== null) {
74            $dict->set('RM', $this->rm);
75        }
76        if ($this->ls !== null) {
77            $dict->set('LS', $this->ls);
78        }
79        if ($this->sa !== null) {
80            $dict->set('SA', $this->sa);
81        }
82        if ($this->na !== null) {
83            $dict->set('NA', $this->na);
84        }
85        if ($this->nr !== null) {
86            $dict->set('NR', new PdfBoolean($this->nr));
87        }
88        return $dict->toPdf();
89    }
90}