Panda3D
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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