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geomVertexRewriter.h
1 // Filename: geomVertexRewriter.h
2 // Created by: drose (28Mar05)
3 //
4 ////////////////////////////////////////////////////////////////////
5 //
6 // PANDA 3D SOFTWARE
7 // Copyright (c) Carnegie Mellon University. All rights reserved.
8 //
9 // All use of this software is subject to the terms of the revised BSD
10 // license. You should have received a copy of this license along
11 // with this source code in a file named "LICENSE."
12 //
13 ////////////////////////////////////////////////////////////////////
14 
15 #ifndef GEOMVERTEXREWRITER_H
16 #define GEOMVERTEXREWRITER_H
17 
18 #include "pandabase.h"
19 #include "geomVertexReader.h"
20 #include "geomVertexWriter.h"
21 
22 ////////////////////////////////////////////////////////////////////
23 // Class : GeomVertexRewriter
24 // Description : This object provides the functionality of both a
25 // GeomVertexReader and a GeomVertexWriter, combined
26 // together into one convenient package. It is designed
27 // for making a single pass over a GeomVertexData
28 // object, modifying rows as it goes.
29 //
30 // Although it doesn't provide any real performance
31 // benefit over using a separate reader and writer on
32 // the same data, it should probably be used in
33 // preference to a separate reader and writer, because
34 // it makes an effort to manage the reference counts
35 // properly between the reader and the writer to avoid
36 // accidentally dereferencing either array while
37 // recopying.
38 ////////////////////////////////////////////////////////////////////
39 class EXPCL_PANDA_GOBJ GeomVertexRewriter : public GeomVertexWriter, public GeomVertexReader {
40 PUBLISHED:
41  INLINE GeomVertexRewriter(Thread *current_thread = Thread::get_current_thread());
42  INLINE GeomVertexRewriter(GeomVertexData *vertex_data, Thread *current_thread = Thread::get_current_thread());
43  INLINE GeomVertexRewriter(GeomVertexData *vertex_data,
44  CPT_InternalName name,
45  Thread *current_thread = Thread::get_current_thread());
46  INLINE GeomVertexRewriter(GeomVertexArrayData *array_data, Thread *current_thread = Thread::get_current_thread());
47  INLINE GeomVertexRewriter(GeomVertexArrayData *array_data,
48  int column, Thread *current_thread = Thread::get_current_thread());
49  INLINE GeomVertexRewriter(const GeomVertexRewriter &copy);
50  INLINE void operator = (const GeomVertexRewriter &copy);
51  INLINE ~GeomVertexRewriter();
52 
53  INLINE GeomVertexData *get_vertex_data() const;
54  INLINE GeomVertexArrayData *get_array_data() const;
56  INLINE size_t get_stride() const;
57  INLINE Thread *get_current_thread() const;
58 
59  INLINE bool set_column(int column);
60  INLINE bool set_column(CPT_InternalName name);
61  INLINE bool set_column(int array, const GeomVertexColumn *column);
62 
63  INLINE void clear();
64  INLINE bool has_column() const;
65  INLINE int get_array() const;
66  INLINE const GeomVertexColumn *get_column() const;
67 
68  INLINE void set_row_unsafe(int row);
69  INLINE void set_row(int row);
70 
71  INLINE int get_start_row() const;
72  INLINE bool is_at_end() const;
73 
74  void output(ostream &out) const;
75 };
76 
77 INLINE ostream &
78 operator << (ostream &out, const GeomVertexRewriter &rewriter) {
79  rewriter.output(out);
80  return out;
81 }
82 
83 #include "geomVertexRewriter.I"
84 
85 #endif
This object provides a high-level interface for quickly writing a sequence of numeric values from a v...
This is a const pointer to an InternalName, and should be used in lieu of a CPT(InternalName) in func...
Definition: internalName.h:197
int get_array() const
Returns the array index containing the data type that the reader is working on.
bool set_column(int column)
Sets up the reader to use the nth data type of the GeomVertexFormat, numbering from 0...
const GeomVertexArrayData * get_array_data() const
Returns the particular array object that the reader is currently processing.
Thread * get_current_thread() const
Returns the Thread pointer of the currently-executing thread, as passed to the constructor of this ob...
const GeomVertexData * get_vertex_data() const
Returns the vertex data object that the reader is processing.
bool is_at_end() const
Returns true if the reader is currently at the end of the list of vertices, false otherwise...
This data object is returned by GeomVertexArrayData::get_handle() or modify_handle().
This defines how a single column is interleaved within a vertex array stored within a Geom...
static Thread * get_current_thread()
Returns a pointer to the currently-executing Thread object.
Definition: thread.I:145
size_t get_stride() const
Returns the per-row stride (bytes between consecutive rows) of the underlying vertex array...
const GeomVertexColumn * get_column() const
Returns the description of the data type that the reader is working on.
This defines the actual numeric vertex data stored in a Geom, in the structure defined by a particula...
bool has_column() const
Returns true if a valid data type has been successfully set, or false if the data type does not exist...
void set_row(int row)
Sets the start row to the indicated value.
int get_start_row() const
Returns the row index at which the reader started.
A thread; that is, a lightweight process.
Definition: thread.h:51
This object provides a high-level interface for quickly reading a sequence of numeric values from a v...
void set_row_unsafe(int row)
Sets the start row to the indicated value, without internal checks.
const GeomVertexArrayDataHandle * get_array_handle() const
Returns the read handle to the array object that the read is currently processing.
void clear()
Resets the GeomVertexReader to the initial state.
This object provides the functionality of both a GeomVertexReader and a GeomVertexWriter, combined together into one convenient package.
This is the data for one array of a GeomVertexData structure.