Panda3D
fltTrackplane.cxx
1 // Filename: fltTrackplane.cxx
2 // Created by: drose (26Aug00)
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 #include "fltTrackplane.h"
16 #include "fltRecordReader.h"
17 #include "fltRecordWriter.h"
18 
19 ////////////////////////////////////////////////////////////////////
20 // Function: FltTrackplane::Constructor
21 // Access: Public
22 // Description:
23 ////////////////////////////////////////////////////////////////////
24 FltTrackplane::
25 FltTrackplane() {
26  _origin.set(0.0, 0.0, 0.0);
27  _alignment.set(0.0, 0.0, 0.0);
28  _plane.set(0.0, 0.0, 1.0);
29  _grid_state = false;
30  _grid_under = false;
31  _grid_angle = 0.0;
32  _grid_spacing_x = 1;
33  _grid_spacing_y = 1;
34  _snap_to_grid = false;
35  _grid_size = 10.0;
36  _grid_spacing_direction = 0;
37  _grid_mask = 0;
38 }
39 
40 ////////////////////////////////////////////////////////////////////
41 // Function: FltTrackplane::extract_record
42 // Access: Public
43 // Description:
44 ////////////////////////////////////////////////////////////////////
45 bool FltTrackplane::
46 extract_record(FltRecordReader &reader) {
47  DatagramIterator &iterator = reader.get_iterator();
48 
49  _origin[0] = iterator.get_be_float64();
50  _origin[1] = iterator.get_be_float64();
51  _origin[2] = iterator.get_be_float64();
52  _alignment[0] = iterator.get_be_float64();
53  _alignment[1] = iterator.get_be_float64();
54  _alignment[0] = iterator.get_be_float64();
55  _plane[0] = iterator.get_be_float64();
56  _plane[1] = iterator.get_be_float64();
57  _plane[2] = iterator.get_be_float64();
58  _grid_state = (iterator.get_be_int32() != 0);
59  _grid_under = (iterator.get_be_int32() != 0);
60  _grid_angle = iterator.get_be_float32();
61  iterator.skip_bytes(4);
62  _grid_spacing_x = iterator.get_be_float64();
63  _grid_spacing_y = iterator.get_be_float64();
64  _snap_to_grid = (iterator.get_be_int32() != 0);
65  _grid_size = iterator.get_be_float64();
66  _grid_spacing_direction = iterator.get_be_int32();
67  _grid_mask = iterator.get_be_int32();
68  iterator.skip_bytes(4);
69 
70  return true;
71 }
72 
73 ////////////////////////////////////////////////////////////////////
74 // Function: FltTrackplane::build_record
75 // Access: Public
76 // Description:
77 ////////////////////////////////////////////////////////////////////
78 bool FltTrackplane::
79 build_record(FltRecordWriter &writer) const {
80  Datagram &datagram = writer.update_datagram();
81 
82  datagram.add_be_float64(_origin[0]);
83  datagram.add_be_float64(_origin[1]);
84  datagram.add_be_float64(_origin[2]);
85  datagram.add_be_float64(_alignment[0]);
86  datagram.add_be_float64(_alignment[1]);
87  datagram.add_be_float64(_alignment[2]);
88  datagram.add_be_float64(_plane[0]);
89  datagram.add_be_float64(_plane[1]);
90  datagram.add_be_float64(_plane[2]);
91  datagram.add_be_int32(_grid_state);
92  datagram.add_be_int32(_grid_under);
93  datagram.add_be_float32(_grid_angle);
94  datagram.pad_bytes(4);
95  datagram.add_be_float64(_grid_spacing_x);
96  datagram.add_be_float64(_grid_spacing_y);
97  datagram.add_be_int32(_snap_to_grid);
98  datagram.add_be_float64(_grid_size);
99  datagram.add_be_int32(_grid_spacing_direction);
100  datagram.add_be_int32(_grid_mask);
101  datagram.pad_bytes(4);
102 
103  return true;
104 }
This class writes a sequence of FltRecords to an ostream, handling opcode and size counts properly...
This class turns an istream into a sequence of FltRecords by reading a sequence of Datagrams and extr...
PN_float64 get_be_float64()
Extracts a 64-bit big-endian floating-point number.
PN_float32 get_be_float32()
Extracts a 32-bit big-endian single-precision floating-point number.
DatagramIterator & get_iterator()
Returns an iterator suitable for extracting data from the current record.
void pad_bytes(size_t size)
Adds the indicated number of zero bytes to the datagram.
Definition: datagram.cxx:111
void add_be_float64(PN_float64 value)
Adds a 64-bit big-endian floating-point number to the datagram.
Definition: datagram.I:339
void add_be_float32(PN_float32 value)
Adds a 32-bit single-precision big-endian floating-point number to the datagram.
Definition: datagram.I:327
void skip_bytes(size_t size)
Skips over the indicated number of bytes in the datagram.
void add_be_int32(PN_int32 value)
Adds a signed 32-bit big-endian integer to the datagram.
Definition: datagram.I:267
A class to retrieve the individual data elements previously stored in a Datagram. ...
Datagram & update_datagram()
Returns a modifiable reference to the datagram associated with the current record.
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
Definition: datagram.h:43
PN_int32 get_be_int32()
Extracts a signed 32-bit big-endian integer.