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rectangleLight.cxx
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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 rectangleLight.cxx
10 * @author rdb
11 * @date 2016-12-19
12 */
13
14#include "rectangleLight.h"
16#include "bamWriter.h"
17#include "bamReader.h"
18#include "datagram.h"
19#include "datagramIterator.h"
20
21TypeHandle RectangleLight::_type_handle;
22
23/**
24 *
25 */
26CycleData *RectangleLight::CData::
27make_copy() const {
28 return new CData(*this);
29}
30
31/**
32 * Writes the contents of this object to the datagram for shipping out to a
33 * Bam file.
34 */
35void RectangleLight::CData::
36write_datagram(BamWriter *manager, Datagram &dg) const {
37 dg.add_stdfloat(_max_distance);
38}
39
40/**
41 * This internal function is called by make_from_bam to read in all of the
42 * relevant data from the BamFile for the new Light.
43 */
44void RectangleLight::CData::
45fillin(DatagramIterator &scan, BamReader *manager) {
46 _max_distance = scan.get_stdfloat();
47}
48
49/**
50 *
51 */
52RectangleLight::
53RectangleLight(const std::string &name) :
54 LightLensNode(name)
55{
56}
57
58/**
59 * Do not call the copy constructor directly; instead, use make_copy() or
60 * copy_subgraph() to make a copy of a node.
61 */
62RectangleLight::
63RectangleLight(const RectangleLight &copy) :
64 LightLensNode(copy),
65 _cycler(copy._cycler)
66{
67}
68
69/**
70 * Returns a newly-allocated PandaNode that is a shallow copy of this one. It
71 * will be a different pointer, but its internal data may or may not be shared
72 * with that of the original PandaNode. No children will be copied.
73 */
75make_copy() const {
76 return new RectangleLight(*this);
77}
78
79/**
80 *
81 */
82void RectangleLight::
83write(std::ostream &out, int indent_level) const {
84 LightLensNode::write(out, indent_level);
85 indent(out, indent_level) << *this << "\n";
86}
87
88/**
89 * Returns the relative priority associated with all lights of this class.
90 * This priority is used to order lights whose instance priority
91 * (get_priority()) is the same--the idea is that other things being equal,
92 * AmbientLights (for instance) are less important than DirectionalLights.
93 */
95get_class_priority() const {
96 return (int)CP_area_priority;
97}
98
99/**
100 *
101 */
102void RectangleLight::
103bind(GraphicsStateGuardianBase *gsg, const NodePath &light, int light_id) {
104}
105
106/**
107 * Tells the BamReader how to create objects of type RectangleLight.
108 */
111 BamReader::get_factory()->register_factory(get_class_type(), make_from_bam);
112}
113
114/**
115 * Writes the contents of this object to the datagram for shipping out to a
116 * Bam file.
117 */
119write_datagram(BamWriter *manager, Datagram &dg) {
121 manager->write_cdata(dg, _cycler);
122}
123
124/**
125 * This function is called by the BamReader's factory when a new object of
126 * type RectangleLight is encountered in the Bam file. It should create the
127 * RectangleLight and extract its information from the file.
128 */
129TypedWritable *RectangleLight::
130make_from_bam(const FactoryParams &params) {
131 RectangleLight *node = new RectangleLight("");
132 DatagramIterator scan;
133 BamReader *manager;
134
135 parse_params(params, scan, manager);
136 node->fillin(scan, manager);
137
138 return node;
139}
140
141/**
142 * This internal function is called by make_from_bam to read in all of the
143 * relevant data from the BamFile for the new RectangleLight.
144 */
145void RectangleLight::
146fillin(DatagramIterator &scan, BamReader *manager) {
147 LightLensNode::fillin(scan, manager);
148
149 manager->read_cdata(scan, _cycler);
150}
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
void parse_params(const FactoryParams &params, DatagramIterator &scan, BamReader *&manager)
Takes in a FactoryParams, passed from a WritableFactory into any TypedWritable's make function,...
Definition bamReader.I:275
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
Definition bamReader.h:110
void read_cdata(DatagramIterator &scan, PipelineCyclerBase &cycler)
Reads in the indicated CycleData object.
static WritableFactory * get_factory()
Returns the global WritableFactory for generating TypedWritable objects.
Definition bamReader.I:177
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
Definition bamWriter.h:63
void write_cdata(Datagram &packet, const PipelineCyclerBase &cycler)
Writes out the indicated CycleData object.
A single page of data maintained by a PipelineCycler.
Definition cycleData.h:50
A class to retrieve the individual data elements previously stored in a Datagram.
PN_stdfloat get_stdfloat()
Extracts either a 32-bit or a 64-bit floating-point number, according to Datagram::set_stdfloat_doubl...
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
Definition datagram.h:38
void add_stdfloat(PN_stdfloat value)
Adds either a 32-bit or a 64-bit floating-point number, according to set_stdfloat_double().
Definition datagram.I:133
An instance of this class is passed to the Factory when requesting it to do its business and construc...
void register_factory(TypeHandle handle, CreateFunc *func, void *user_data=nullptr)
Registers a new kind of thing the Factory will be able to create.
Definition factory.I:73
This is a base class for the GraphicsStateGuardian class, which is itself a base class for the variou...
A derivative of Light and of Camera.
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
NodePath is the fundamental system for disambiguating instances, and also provides a higher-level int...
Definition nodePath.h:159
A basic node of the scene graph or data graph.
Definition pandaNode.h:65
This is a type of area light that is an axis aligned rectangle, pointing along the Y axis in the posi...
virtual int get_class_priority() const
Returns the relative priority associated with all lights of this class.
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
virtual PandaNode * make_copy() const
Returns a newly-allocated PandaNode that is a shallow copy of this one.
static void register_with_read_factory()
Tells the BamReader how to create objects of type RectangleLight.
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.
std::ostream & indent(std::ostream &out, int indent_level)
A handy function for doing text formatting.
Definition indent.cxx:20
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.