Panda3D
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fisheyeMaker.h
00001 // Filename: fisheyeMaker.h
00002 // Created by:  drose (3Oct05)
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 FISHEYEMAKER_H
00016 #define FISHEYEMAKER_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "pandaNode.h"
00021 #include "pointerTo.h"
00022 #include "namable.h"
00023 
00024 class GeomVertexWriter;
00025 
00026 ////////////////////////////////////////////////////////////////////
00027 //       Class : FisheyeMaker
00028 // Description : This class is similar to CardMaker, but instead of
00029 //               generating ordinary cards, it generates a circular
00030 //               rose that represents the projection of a 3-D scene
00031 //               through a fisheye lens.  The texture coordinates of
00032 //               the rose are defined so that each 2-D vertex has a
00033 //               3-D UVW that reflects the corresponding position in
00034 //               3-D space of that particular vertex.
00035 //
00036 //               This class is particularly suited for converting cube
00037 //               maps to sphere maps.
00038 ////////////////////////////////////////////////////////////////////
00039 class EXPCL_PANDA_GRUTIL FisheyeMaker : public Namable {
00040 PUBLISHED:
00041   INLINE FisheyeMaker(const string &name);
00042   INLINE ~FisheyeMaker();
00043 
00044   void reset();
00045   void set_fov(PN_stdfloat fov);
00046   INLINE void set_num_vertices(int num_vertices);
00047   INLINE void set_square_inscribed(bool square_inscribed, PN_stdfloat square_radius);
00048   INLINE void set_reflection(bool reflection);
00049 
00050   PT(PandaNode) generate();
00051 
00052 private:
00053   void add_vertex(GeomVertexWriter &vertex, GeomVertexWriter &texcoord,
00054                   PN_stdfloat r, PN_stdfloat a);
00055 
00056   void add_square_vertex(GeomVertexWriter &vertex, GeomVertexWriter &texcoord,
00057                          PN_stdfloat a);
00058 
00059   PN_stdfloat _fov;
00060   PN_stdfloat _half_fov_rad;
00061   int _num_vertices;
00062   bool _square_inscribed;
00063   PN_stdfloat _square_radius;
00064   PN_stdfloat _reflect;
00065 };
00066 
00067 #include "fisheyeMaker.I"
00068 
00069 #endif
00070 
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