Panda3D
 All Classes Functions Variables Enumerations
lwoGroupChunk.cxx
00001 // Filename: lwoGroupChunk.cxx
00002 // Created by:  drose (24Apr01)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #include "lwoGroupChunk.h"
00016 #include "lwoInputFile.h"
00017 
00018 #include "pnotify.h"
00019 
00020 TypeHandle LwoGroupChunk::_type_handle;
00021 
00022 ////////////////////////////////////////////////////////////////////
00023 //     Function: LwoGroupChunk::get_num_chunks
00024 //       Access: Public
00025 //  Description: Returns the number of child chunks of this group.
00026 ////////////////////////////////////////////////////////////////////
00027 int LwoGroupChunk::
00028 get_num_chunks() const {
00029   return _chunks.size();
00030 }
00031 
00032 ////////////////////////////////////////////////////////////////////
00033 //     Function: LwoGroupChunk::get_chunk
00034 //       Access: Public
00035 //  Description: Returns the nth child chunk of this group.
00036 ////////////////////////////////////////////////////////////////////
00037 IffChunk *LwoGroupChunk::
00038 get_chunk(int n) const {
00039   nassertr(n >= 0 && n < (int)_chunks.size(), (IffChunk *)NULL);
00040   return _chunks[n];
00041 }
00042 
00043 ////////////////////////////////////////////////////////////////////
00044 //     Function: LwoGroupChunk::read_chunks_iff
00045 //       Access: Public
00046 //  Description: Reads a sequence of child chunks, until byte stop_at
00047 //               has been been reached, and stores them as the
00048 //               children.  Returns true if successful (and exactly
00049 //               the correct number of bytes were read), or false
00050 //               otherwise.
00051 ////////////////////////////////////////////////////////////////////
00052 bool LwoGroupChunk::
00053 read_chunks_iff(IffInputFile *in, size_t stop_at) {
00054   while (in->get_bytes_read() < stop_at && !in->is_eof()) {
00055     PT(IffChunk) chunk = in->get_chunk();
00056     if (chunk == (IffChunk *)NULL) {
00057       return false;
00058     }
00059     _chunks.push_back(chunk);
00060   }
00061 
00062   return (in->get_bytes_read() == stop_at);
00063 }
00064 
00065 ////////////////////////////////////////////////////////////////////
00066 //     Function: LwoGroupChunk::read_subchunks_iff
00067 //       Access: Public
00068 //  Description: Similar to read_chunks_iff(), but reads them as
00069 //               subchunks.
00070 ////////////////////////////////////////////////////////////////////
00071 bool LwoGroupChunk::
00072 read_subchunks_iff(IffInputFile *in, size_t stop_at) {
00073   while (in->get_bytes_read() < stop_at && !in->is_eof()) {
00074     PT(IffChunk) chunk = in->get_subchunk(this);
00075     if (chunk == (IffChunk *)NULL) {
00076       return false;
00077     }
00078     _chunks.push_back(chunk);
00079   }
00080 
00081   return (in->get_bytes_read() == stop_at);
00082 }
00083 
00084 ////////////////////////////////////////////////////////////////////
00085 //     Function: LwoGroupChunk::write_chunks
00086 //       Access: Public
00087 //  Description: Formats the list of chunks for output to the user
00088 //               (primarily for debugging), one per line.
00089 ////////////////////////////////////////////////////////////////////
00090 void LwoGroupChunk::
00091 write_chunks(ostream &out, int indent_level) const {
00092   Chunks::const_iterator ci;
00093   for (ci = _chunks.begin(); ci != _chunks.end(); ++ci) {
00094     (*ci)->write(out, indent_level);
00095   }
00096 }
 All Classes Functions Variables Enumerations