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lightRampAttrib.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 lightRampAttrib.h
10 * @author drose
11 * @date 2002-03-04
12 */
13
14#ifndef LIGHTRAMPATTRIB_H
15#define LIGHTRAMPATTRIB_H
16
17#include "pandabase.h"
18#include "renderAttrib.h"
19
20class FactoryParams;
21
22/**
23 * A Light Ramp is any unary operator that takes a rendered pixel as input,
24 * and adjusts the brightness of that pixel. For example, gamma correction is
25 * a kind of light ramp. So is HDR tone mapping. So is cartoon shading. See
26 * the constructors for an explanation of each kind of ramp.
27 */
28class EXPCL_PANDA_PGRAPH LightRampAttrib : public RenderAttrib {
29private:
30 INLINE LightRampAttrib();
31
32PUBLISHED:
33 enum LightRampMode {
34 LRT_default,
35 LRT_identity,
36 LRT_single_threshold,
37 LRT_double_threshold,
38 LRT_hdr0,
39 LRT_hdr1,
40 LRT_hdr2,
41 };
42 static CPT(RenderAttrib) make_default();
43 static CPT(RenderAttrib) make_identity();
44 static CPT(RenderAttrib) make_single_threshold(PN_stdfloat thresh0, PN_stdfloat lev0);
45 static CPT(RenderAttrib) make_double_threshold(PN_stdfloat thresh0, PN_stdfloat lev0, PN_stdfloat thresh1, PN_stdfloat lev1);
46 static CPT(RenderAttrib) make_hdr0();
47 static CPT(RenderAttrib) make_hdr1();
48 static CPT(RenderAttrib) make_hdr2();
49
50
51 INLINE LightRampMode get_mode() const;
52 INLINE PN_stdfloat get_level(int n) const;
53 INLINE PN_stdfloat get_threshold(int n) const;
54
55PUBLISHED:
56 MAKE_PROPERTY(mode, get_mode);
57
58public:
59 virtual void output(std::ostream &out) const;
60
61protected:
62 virtual int compare_to_impl(const RenderAttrib *other) const;
63 virtual size_t get_hash_impl() const;
64
65private:
66 LightRampMode _mode;
67 PN_stdfloat _level[2];
68 PN_stdfloat _threshold[2];
69
70 static CPT(RenderAttrib) _default;
71
72PUBLISHED:
73 static int get_class_slot() {
74 return _attrib_slot;
75 }
76 virtual int get_slot() const {
77 return get_class_slot();
78 }
79 MAKE_PROPERTY(class_slot, get_class_slot);
80
81public:
82 static void register_with_read_factory();
83 virtual void write_datagram(BamWriter *manager, Datagram &dg);
84
85protected:
86 static TypedWritable *make_from_bam(const FactoryParams &params);
87 void fillin(DatagramIterator &scan, BamReader *manager);
88
89public:
90 static TypeHandle get_class_type() {
91 return _type_handle;
92 }
93 static void init_type() {
94 RenderAttrib::init_type();
95 register_type(_type_handle, "LightRampAttrib",
96 RenderAttrib::get_class_type());
97 _attrib_slot = register_slot(_type_handle, 100, new LightRampAttrib);
98 }
99 virtual TypeHandle get_type() const {
100 return get_class_type();
101 }
102 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
103
104private:
105 static TypeHandle _type_handle;
106 static int _attrib_slot;
107};
108
109#include "lightRampAttrib.I"
110
111#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...
A Light Ramp is any unary operator that takes a rendered pixel as input, and adjusts the brightness o...
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.
static int register_slot(TypeHandle type_handle, int sort, RenderAttrib *default_attrib)
Adds the indicated TypeHandle to the registry, if it is not there already, and returns a unique slot ...
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.
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.