Panda3D
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lwoSurfaceBlockOpacity.cxx
00001 // Filename: lwoSurfaceBlockOpacity.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 "lwoSurfaceBlockOpacity.h"
00016 #include "lwoInputFile.h"
00017 
00018 #include "dcast.h"
00019 #include "indent.h"
00020 
00021 TypeHandle LwoSurfaceBlockOpacity::_type_handle;
00022 
00023 ////////////////////////////////////////////////////////////////////
00024 //     Function: LwoSurfaceBlockOpacity::read_iff
00025 //       Access: Public, Virtual
00026 //  Description: Reads the data of the chunk in from the given input
00027 //               file, if possible.  The ID and length of the chunk
00028 //               have already been read.  stop_at is the byte position
00029 //               of the file to stop at (based on the current position
00030 //               at in->get_bytes_read()).  Returns true on success,
00031 //               false otherwise.
00032 ////////////////////////////////////////////////////////////////////
00033 bool LwoSurfaceBlockOpacity::
00034 read_iff(IffInputFile *in, size_t stop_at) {
00035   LwoInputFile *lin = DCAST(LwoInputFile, in);
00036 
00037   _type = (Type)lin->get_be_uint16();
00038   _opacity = lin->get_be_float32();
00039   _envelope = lin->get_vx();
00040 
00041   return true;
00042 }
00043 
00044 ////////////////////////////////////////////////////////////////////
00045 //     Function: LwoSurfaceBlockOpacity::write
00046 //       Access: Public, Virtual
00047 //  Description:
00048 ////////////////////////////////////////////////////////////////////
00049 void LwoSurfaceBlockOpacity::
00050 write(ostream &out, int indent_level) const {
00051   indent(out, indent_level)
00052     << get_id() << " { type = " << (int)_type
00053     << ", opacity = " << _opacity * 100.0 << "%, envelope = " << _envelope
00054     << " }\n";
00055 }
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