Panda3D

lwoSurfaceBlockOpacity.h

00001 // Filename: lwoSurfaceBlockOpacity.h
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 #ifndef LWOSURFACEBLOCKOPACITY_H
00016 #define LWOSURFACEBLOCKOPACITY_H
00017 
00018 #include "pandatoolbase.h"
00019 
00020 #include "lwoChunk.h"
00021 
00022 ////////////////////////////////////////////////////////////////////
00023 //       Class : LwoSurfaceBlockOpacity
00024 // Description : Indicates how transparent or opaque this particular
00025 //               layer is in relation to the layers beneath it.  This
00026 //               is a subchunk of LwoSurfaceBlockHeader.
00027 ////////////////////////////////////////////////////////////////////
00028 class LwoSurfaceBlockOpacity : public LwoChunk {
00029 public:
00030   enum Type {
00031     T_additive             = 0,
00032     T_subtractive          = 1,
00033     T_difference           = 2,
00034     T_multiply             = 3,
00035     T_divide               = 4,
00036     T_alpha                = 5,
00037     T_texture_displacement = 6
00038   };
00039 
00040   Type _type;
00041   PN_stdfloat _opacity;
00042   int _envelope;
00043 
00044 public:
00045   virtual bool read_iff(IffInputFile *in, size_t stop_at);
00046   virtual void write(ostream &out, int indent_level = 0) const;
00047 
00048 public:
00049   virtual TypeHandle get_type() const {
00050     return get_class_type();
00051   }
00052   virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
00053   static TypeHandle get_class_type() {
00054     return _type_handle;
00055   }
00056   static void init_type() {
00057     LwoChunk::init_type();
00058     register_type(_type_handle, "LwoSurfaceBlockOpacity",
00059                   LwoChunk::get_class_type());
00060   }
00061 
00062 private:
00063   static TypeHandle _type_handle;
00064 };
00065 
00066 #endif
00067 
00068 
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