1 /* -*-c++-*-
2  *
3  * Copyright (C) 2008 Stuart Buchanan
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License as
7  * published by the Free Software Foundation; either version 2 of the
8  * License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
18  * MA 02110-1301, USA.
19  *
20  */
21 
22 #ifndef TREE_BIN_HXX
23 #define TREE_BIN_HXX
24 
25 #include <vector>
26 #include <string>
27 
28 #include <osg/Geometry>
29 #include <osg/Group>
30 #include <osg/Matrix>
31 
32 #include <simgear/scene/util/OsgMath.hxx>
33 
34 namespace simgear
35 {
36 class TreeBin {
37 public:
38     ~TreeBin() = default;
39 
40     struct Tree {
41         SGVec3f position;
42         SGVec3f tnormal;
Treesimgear::TreeBin::Tree43         Tree(const SGVec3f& p, const SGVec3f& t) : position(p), tnormal(t)
44         {
45         }
46   };
47 
48     typedef std::vector<Tree> TreeList;
49 
50     int texture_varieties;
51     double range;
52     float height;
53     float width;
54     std::string texture;
55     std::string teffect;
56 
insert(const Tree & t)57     void insert(const Tree& t)
58     { _trees.push_back(t); }
59 
insert(const SGVec3f & p,const SGVec3f & tnorm)60     void insert(const SGVec3f& p, const SGVec3f& tnorm)
61     {
62         _trees.emplace_back(p, tnorm);
63     }
64 
getNumTrees() const65     unsigned getNumTrees() const
66     { return _trees.size(); }
67 
getTree(unsigned i) const68     const Tree& getTree(unsigned i) const
69     {
70         assert(i < _trees.size());
71         return _trees.at(i);
72     }
73 
74     TreeList _trees;
75 
76 };
77 
78 void clearSharedTreeGeometry();
79 
80 typedef std::list<TreeBin*> SGTreeBinList;
81 
82 osg::Group* createForest(SGTreeBinList& forestList, const osg::Matrix& transform,
83                          const SGReaderWriterOptions* options);
84 }
85 #endif
86