Panda3D
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...
Definition: factoryParams.h:36
This is the base class for a number of render attributes (other than transform) that may be set on sc...
Definition: renderAttrib.h:51
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.
Definition: typedWritable.h:35
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.