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rescaleNormalAttrib.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 rescaleNormalAttrib.h
10 * @author drose
11 * @date 2004-12-30
12 */
13
14#ifndef RESCALENORMALATTRIB_H
15#define RESCALENORMALATTRIB_H
16
17#include "pandabase.h"
18
19#include "renderAttrib.h"
20
21class FactoryParams;
22
23/**
24 * Specifies how polygons are to be drawn.
25 */
26class EXPCL_PANDA_PGRAPH RescaleNormalAttrib : public RenderAttrib {
27PUBLISHED:
28 enum Mode {
29 // No adjustments are made to normals.
30 M_none,
31
32 // Normals are counterscaled by the transform's uniform scale, if
33 // supported by the graphics API.
34 M_rescale,
35
36 // Normals are scaled to unit length; potentially expensive.
37 M_normalize,
38
39 // Normals are counterscaled in the presence of a uniform scale transform,
40 // or normalized in the presence of a non-uniform scale transform.
41 M_auto,
42 };
43
44private:
45 INLINE RescaleNormalAttrib(Mode mode);
46
47PUBLISHED:
48 static CPT(RenderAttrib) make(Mode mode);
49 INLINE static CPT(RenderAttrib) make_default();
50
51 INLINE Mode get_mode() const;
52 MAKE_PROPERTY(mode, get_mode);
53
54public:
55 virtual void output(std::ostream &out) const;
56
57protected:
58 virtual int compare_to_impl(const RenderAttrib *other) const;
59 virtual size_t get_hash_impl() const;
60
61private:
62 Mode _mode;
63
64 // There are so few possible combinations, and it's used fairly often, so we
65 // keep an array of the possible attributes.
66 static CPT(RenderAttrib) _attribs[M_auto + 1];
67
68PUBLISHED:
69 static int get_class_slot() {
70 return _attrib_slot;
71 }
72 virtual int get_slot() const {
73 return get_class_slot();
74 }
75 MAKE_PROPERTY(class_slot, get_class_slot);
76
77public:
78 static void register_with_read_factory();
79 virtual void write_datagram(BamWriter *manager, Datagram &dg);
80
81protected:
82 static TypedWritable *make_from_bam(const FactoryParams &params);
83 void fillin(DatagramIterator &scan, BamReader *manager);
84
85public:
86 static TypeHandle get_class_type() {
87 return _type_handle;
88 }
89 static void init_type();
90 virtual TypeHandle get_type() const {
91 return get_class_type();
92 }
93 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
94
95private:
96 static TypeHandle _type_handle;
97 static int _attrib_slot;
98};
99
100EXPCL_PANDA_PGRAPH std::ostream &operator << (std::ostream &out, RescaleNormalAttrib::Mode mode);
101EXPCL_PANDA_PGRAPH std::istream &operator >> (std::istream &in, RescaleNormalAttrib::Mode &mode);
102
103#include "rescaleNormalAttrib.I"
104
105#endif
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
Definition bamReader.h:110
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
Definition bamWriter.h:63
A class to retrieve the individual data elements previously stored in a Datagram.
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
Definition datagram.h:38
An instance of this class is passed to the Factory when requesting it to do its business and construc...
This is the base class for a number of render attributes (other than transform) that may be set on sc...
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
Specifies how polygons are to be drawn.
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
Base class for objects that can be written to and read from Bam files.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.