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lwoPolygons.h
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file lwoPolygons.h
10 * @author drose
11 * @date 2001-04-24
12 */
13
14#ifndef LWOPOLYGONS_H
15#define LWOPOLYGONS_H
16
17#include "pandatoolbase.h"
18
19#include "lwoChunk.h"
20
21#include "luse.h"
22#include "vector_int.h"
23#include "referenceCount.h"
24#include "pointerTo.h"
25
26/**
27 * An array of polygons that will be referenced by later chunks.
28 */
29class LwoPolygons : public LwoChunk {
30public:
31 enum PolygonFlags {
32 PF_continuity_1 = 0x0400,
33 PF_continuity_2 = 0x0800,
34 PF_numverts_mask = 0x03f,
35
36 // This "flag" is stored artificially when reading 5.x LWOB files, and
37 // indicates that the polygon is a decal of a preceding polygon.
38 PF_decal = 0x0001
39 };
40
41 class Polygon : public ReferenceCount {
42 public:
43 int _flags;
44 vector_int _vertices;
45
46 // This value is only filled in when reading 5.x LWOB files, and indicates
47 // the surface index of the polygon within a preceding SRFS (LwoTags)
48 // chunk. For 6.x and later files, this will be set to -1.
49 int _surface_index;
50 };
51
52 int get_num_polygons() const;
53 Polygon *get_polygon(int n) const;
54
55 IffId _polygon_type;
56
57public:
58 virtual bool read_iff(IffInputFile *in, size_t stop_at);
59 virtual void write(std::ostream &out, int indent_level = 0) const;
60
61private:
62 typedef pvector< PT(Polygon) > Polygons;
63 Polygons _polygons;
64
65public:
66 virtual TypeHandle get_type() const {
67 return get_class_type();
68 }
69 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
70 static TypeHandle get_class_type() {
71 return _type_handle;
72 }
73 static void init_type() {
74 LwoChunk::init_type();
75 register_type(_type_handle, "LwoPolygons",
76 LwoChunk::get_class_type());
77 }
78
79private:
80 static TypeHandle _type_handle;
81};
82
83#endif
A four-byte chunk ID appearing in an "IFF" file.
Definition iffId.h:26
A wrapper around an istream used for reading an IFF file.
A specialization of IffChunk for Lightwave Object files.
Definition lwoChunk.h:26
An array of polygons that will be referenced by later chunks.
Definition lwoPolygons.h:29
Polygon * get_polygon(int n) const
Returns the nth polygon of this group.
int get_num_polygons() const
Returns the number of polygons of this group.
virtual bool read_iff(IffInputFile *in, size_t stop_at)
Reads the data of the chunk in from the given input file, if possible.
A base class for all things that want to be reference-counted.
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
This is our own Panda specialization on the default STL vector.
Definition pvector.h:42
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.