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geomVertexRewriter.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 geomVertexRewriter.h
10 * @author drose
11 * @date 2005-03-28
12 */
13
14#ifndef GEOMVERTEXREWRITER_H
15#define GEOMVERTEXREWRITER_H
16
17#include "pandabase.h"
18#include "geomVertexReader.h"
19#include "geomVertexWriter.h"
20
21/**
22 * This object provides the functionality of both a GeomVertexReader and a
23 * GeomVertexWriter, combined together into one convenient package. It is
24 * designed for making a single pass over a GeomVertexData object, modifying
25 * rows as it goes.
26 *
27 * Although it doesn't provide any real performance benefit over using a
28 * separate reader and writer on the same data, it should probably be used in
29 * preference to a separate reader and writer, because it makes an effort to
30 * manage the reference counts properly between the reader and the writer to
31 * avoid accidentally dereferencing either array while recopying.
32 */
33class EXPCL_PANDA_GOBJ GeomVertexRewriter : public GeomVertexWriter, public GeomVertexReader {
34PUBLISHED:
35 INLINE GeomVertexRewriter(Thread *current_thread = Thread::get_current_thread());
36 INLINE GeomVertexRewriter(GeomVertexData *vertex_data, Thread *current_thread = Thread::get_current_thread());
37 INLINE GeomVertexRewriter(GeomVertexData *vertex_data,
39 Thread *current_thread = Thread::get_current_thread());
40 INLINE GeomVertexRewriter(GeomVertexArrayData *array_data, Thread *current_thread = Thread::get_current_thread());
41 INLINE GeomVertexRewriter(GeomVertexArrayData *array_data,
42 int column, Thread *current_thread = Thread::get_current_thread());
43 INLINE GeomVertexRewriter(const GeomVertexRewriter &copy);
44 INLINE void operator = (const GeomVertexRewriter &copy);
45 INLINE ~GeomVertexRewriter();
46
47 INLINE GeomVertexData *get_vertex_data() const;
48 INLINE GeomVertexArrayData *get_array_data() const;
50 INLINE size_t get_stride() const;
51 INLINE Thread *get_current_thread() const;
52
53 INLINE bool set_column(int column);
54 INLINE bool set_column(CPT_InternalName name);
55 INLINE bool set_column(int array, const GeomVertexColumn *column);
56
57 INLINE void clear();
58 INLINE bool has_column() const;
59 INLINE int get_array() const;
60 INLINE const GeomVertexColumn *get_column() const;
61
62 INLINE void set_row_unsafe(int row);
63 INLINE void set_row(int row);
64
65 INLINE int get_start_row() const;
66 INLINE bool is_at_end() const;
67
68 void output(std::ostream &out) const;
69};
70
71INLINE std::ostream &
72operator << (std::ostream &out, const GeomVertexRewriter &rewriter) {
73 rewriter.output(out);
74 return out;
75}
76
77#include "geomVertexRewriter.I"
78
79#endif
This is a const pointer to an InternalName, and should be used in lieu of a CPT(InternalName) in func...
This data object is returned by GeomVertexArrayData::get_handle() or modify_handle().
This is the data for one array of a GeomVertexData structure.
This defines how a single column is interleaved within a vertex array stored within a Geom.
This defines the actual numeric vertex data stored in a Geom, in the structure defined by a particula...
This object provides a high-level interface for quickly reading a sequence of numeric values from a v...
This object provides the functionality of both a GeomVertexReader and a GeomVertexWriter,...
This object provides a high-level interface for quickly writing a sequence of numeric values from a v...
Thread * get_current_thread() const
Returns the Thread pointer of the currently-executing thread, as passed to the constructor of this ob...
size_t get_stride() const
Returns the per-row stride (bytes between consecutive rows) of the underlying vertex array.
bool set_column(int column)
Sets up the writer to use the nth data type of the GeomVertexFormat, numbering from 0.
void clear()
Resets the GeomVertexWriter to the initial state.
void set_row_unsafe(int row)
Sets the start row to the indicated value, without internal checks.
bool is_at_end() const
Returns true if the writer is currently at the end of the list of vertices, false otherwise.
GeomVertexArrayDataHandle * get_array_handle() const
Returns the write handle to the array object that the writer is currently processing.
void set_row(int row)
Sets the start row to the indicated value.
bool has_column() const
Returns true if a valid data type has been successfully set, or false if the data type does not exist...
int get_array() const
Returns the array index containing the data type that the writer is working on.
GeomVertexArrayData * get_array_data() const
Returns the particular array object that the writer is currently processing.
int get_start_row() const
Returns the row index at which the writer started.
const GeomVertexColumn * get_column() const
Returns the description of the data type that the writer is working on.
GeomVertexData * get_vertex_data() const
Returns the vertex data object that the writer is processing.
A thread; that is, a lightweight process.
Definition thread.h:46
get_current_thread
Returns a pointer to the currently-executing Thread object.
Definition thread.h:109
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.