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sphereLight.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 sphereLight.cxx
10 * @author rdb
11 * @date 2016-04-15
12 */
13
14#include "sphereLight.h"
16#include "bamWriter.h"
17#include "bamReader.h"
18#include "datagram.h"
19#include "datagramIterator.h"
20
21TypeHandle SphereLight::_type_handle;
22
23/**
24 *
25 */
26CycleData *SphereLight::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 SphereLight::CData::
36write_datagram(BamWriter *manager, Datagram &dg) const {
37 dg.add_stdfloat(_radius);
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 SphereLight::CData::
45fillin(DatagramIterator &scan, BamReader *manager) {
46 _radius = scan.get_stdfloat();
47}
48
49/**
50 *
51 */
52SphereLight::
53SphereLight(const std::string &name) :
54 PointLight(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 */
62SphereLight::
63SphereLight(const SphereLight &copy) :
64 PointLight(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 SphereLight(*this);
77}
78
79/**
80 * Transforms the contents of this PandaNode by the indicated matrix, if it
81 * means anything to do so. For most kinds of PandaNodes, this does nothing.
82 */
84xform(const LMatrix4 &mat) {
86 CDWriter cdata(_cycler);
87 cdata->_radius = mat.xform_vec(LVector3(0, 0, cdata->_radius)).length();
88 mark_viz_stale();
89}
90
91/**
92 *
93 */
94void SphereLight::
95write(std::ostream &out, int indent_level) const {
96 PointLight::write(out, indent_level);
97 indent(out, indent_level) << *this << ":\n";
98 indent(out, indent_level + 2)
99 << "radius " << get_radius() << "\n";
100}
101
102/**
103 * Tells the BamReader how to create objects of type SphereLight.
104 */
107 BamReader::get_factory()->register_factory(get_class_type(), make_from_bam);
108}
109
110/**
111 * Writes the contents of this object to the datagram for shipping out to a
112 * Bam file.
113 */
115write_datagram(BamWriter *manager, Datagram &dg) {
116 PointLight::write_datagram(manager, dg);
117 manager->write_cdata(dg, _cycler);
118}
119
120/**
121 * This function is called by the BamReader's factory when a new object of
122 * type SphereLight is encountered in the Bam file. It should create the
123 * SphereLight and extract its information from the file.
124 */
125TypedWritable *SphereLight::
126make_from_bam(const FactoryParams &params) {
127 SphereLight *node = new SphereLight("");
128 DatagramIterator scan;
129 BamReader *manager;
130
131 parse_params(params, scan, manager);
132 node->fillin(scan, manager);
133
134 return node;
135}
136
137/**
138 * This internal function is called by make_from_bam to read in all of the
139 * relevant data from the BamFile for the new SphereLight.
140 */
141void SphereLight::
142fillin(DatagramIterator &scan, BamReader *manager) {
143 PointLight::fillin(scan, manager);
144
145 manager->read_cdata(scan, _cycler);
146}
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.
This template class calls PipelineCycler::write() in the constructor and PipelineCycler::release_writ...
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
A basic node of the scene graph or data graph.
Definition pandaNode.h:65
A light originating from a single point in space, and shining in all directions.
Definition pointLight.h:25
virtual void xform(const LMatrix4 &mat)
Transforms the contents of this PandaNode by the indicated matrix, if it means anything to do so.
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
A sphere light is like a point light, except that it represents a sphere with a radius,...
Definition sphereLight.h:28
static void register_with_read_factory()
Tells the BamReader how to create objects of type SphereLight.
get_radius
Returns the radius of the sphere.
Definition sphereLight.h:43
virtual void xform(const LMatrix4 &mat)
Transforms the contents of this PandaNode by the indicated matrix, if it means anything to do so.
virtual PandaNode * make_copy() const
Returns a newly-allocated PandaNode that is a shallow copy of this one.
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
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.