Panda3D

geomPatches.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 geomPatches.h
10 * @author drose
11 * @date 2012-04-27
12 */
13
14 #ifndef GEOMPATCHES_H
15 #define GEOMPATCHES_H
16
17 #include "pandabase.h"
18 #include "geomPrimitive.h"
19
20 /**
21 * Defines a series of "patches", fixed-size groupings of vertices that must
22 * be processed by a tessellation shader.
23 */
24 class EXPCL_PANDA_GOBJ GeomPatches : public GeomPrimitive {
25 PUBLISHED:
26 explicit GeomPatches(int num_vertices_per_patch, UsageHint usage_hint);
27 GeomPatches(const GeomPatches &copy);
28 virtual ~GeomPatches();
29 ALLOC_DELETED_CHAIN(GeomPatches);
30
31 public:
32 virtual PT(GeomPrimitive) make_copy() const;
33 virtual PrimitiveType get_primitive_type() const;
34
35 virtual int get_num_vertices_per_primitive() const;
36
37 public:
38 virtual bool draw(GraphicsStateGuardianBase *gsg,
39 const GeomPrimitivePipelineReader *reader,
40 bool force) const;
41
42 private:
43 int _num_vertices_per_patch;
44
45 public:
46 static void register_with_read_factory();
47 virtual void write_datagram(BamWriter *manager, Datagram &dg);
48
49 protected:
50 void fillin(DatagramIterator &scan, BamReader *manager);
51 static TypedWritable *make_from_bam(const FactoryParams &params);
52
53 public:
54 static TypeHandle get_class_type() {
55 return _type_handle;
56 }
57 static void init_type() {
58 GeomPrimitive::init_type();
59 register_type(_type_handle, "GeomPatches",
60 GeomPrimitive::get_class_type());
61 }
62 virtual TypeHandle get_type() const {
63 return get_class_type();
64 }
65 virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
66
67 private:
68 static TypeHandle _type_handle;
69
70 friend class Geom;
71 };
72
73 #endif
BamReader
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
Definition: bamReader.h:110
BamWriter
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
Definition: bamWriter.h:63
DatagramIterator
A class to retrieve the individual data elements previously stored in a Datagram.
Definition: datagramIterator.h:27
Datagram
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
Definition: datagram.h:38
FactoryParams
An instance of this class is passed to the Factory when requesting it to do its business and construc...
Definition: factoryParams.h:36
GeomPatches
Defines a series of "patches", fixed-size groupings of vertices that must be processed by a tessellat...
Definition: geomPatches.h:24
GeomPrimitivePipelineReader
Encapsulates the data from a GeomPrimitive, pre-fetched for one stage of the pipeline.
Definition: geomPrimitive.h:352
GeomPrimitive
This is an abstract base class for a family of classes that represent the fundamental geometry primit...
Definition: geomPrimitive.h:56
GeomPrimitive::write_datagram
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
Definition: geomPrimitive.cxx:2169
GeomPrimitive::get_num_vertices_per_primitive
get_num_vertices_per_primitive
If the primitive type is a simple type in which all primitives have the same number of vertices,...
Definition: geomPrimitive.h:194
Geom
A container for geometry primitives.
Definition: geom.h:54
GraphicsStateGuardianBase
This is a base class for the GraphicsStateGuardian class, which is itself a base class for the variou...
Definition: graphicsStateGuardianBase.h:110
TypeHandle
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:81
TypedWritable
Base class for objects that can be written to and read from Bam files.
Definition: typedWritable.h:35
geomPrimitive.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pandabase.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
register_type
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...
Definition: register_type.I:22