Panda3D

lwoSurfaceBlockOpacity.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 lwoSurfaceBlockOpacity.cxx
10 * @author drose
11 * @date 2001-04-24
12 */
13
14 #include "lwoSurfaceBlockOpacity.h"
15 #include "lwoInputFile.h"
16
17 #include "dcast.h"
18 #include "indent.h"
19
20 TypeHandle LwoSurfaceBlockOpacity::_type_handle;
21
22 /**
23 * Reads the data of the chunk in from the given input file, if possible. The
24 * ID and length of the chunk have already been read. stop_at is the byte
25 * position of the file to stop at (based on the current position at
26 * in->get_bytes_read()). Returns true on success, false otherwise.
27 */
28 bool LwoSurfaceBlockOpacity::
29 read_iff(IffInputFile *in, size_t stop_at) {
30 LwoInputFile *lin = DCAST(LwoInputFile, in);
31
32 _type = (Type)lin->get_be_uint16();
33 _opacity = lin->get_be_float32();
34 _envelope = lin->get_vx();
35
36 return true;
37 }
38
39 /**
40 *
41 */
42 void LwoSurfaceBlockOpacity::
43 write(std::ostream &out, int indent_level) const {
44 indent(out, indent_level)
45 << get_id() << " { type = " << (int)_type
46 << ", opacity = " << _opacity * 100.0 << "%, envelope = " << _envelope
47 << " }\n";
48 }
IffChunk::get_id
IffId get_id() const
Returns the ID associated with this chunk.
Definition: iffChunk.I:25
IffInputFile
A wrapper around an istream used for reading an IFF file.
Definition: iffInputFile.h:30
IffInputFile::get_be_float32
PN_stdfloat get_be_float32()
Extracts a 32-bit big-endian single-precision floating-point number.
Definition: iffInputFile.cxx:165
IffInputFile::get_be_uint16
uint16_t get_be_uint16()
Extracts an unsigned 16-bit big-endian integer.
Definition: iffInputFile.cxx:139
LwoInputFile
A specialization of IffInputFile to handle reading a Lightwave Object file.
Definition: lwoInputFile.h:26
LwoInputFile::get_vx
int get_vx()
Reads a Lightwave variable-length index.
Definition: lwoInputFile.cxx:50
LwoSurfaceBlockOpacity::read_iff
virtual bool read_iff(IffInputFile *in, size_t stop_at)
Reads the data of the chunk in from the given input file, if possible.
Definition: lwoSurfaceBlockOpacity.cxx:29
TypeHandle
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:81
dcast.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
indent
std::ostream & indent(std::ostream &out, int indent_level)
A handy function for doing text formatting.
Definition: indent.cxx:20
indent.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
lwoInputFile.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
lwoSurfaceBlockOpacity.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.