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 SHADER_GEOMETRY_HXX
23 #define SHADER_GEOMETRY_HXX 1
24 
25 #include <vector>
26 
27 #include <osg/Array>
28 #include <osg/BoundingBox>
29 #include <osg/CopyOp>
30 #include <osg/Drawable>
31 #include <osg/Geometry>
32 #include <osg/RenderInfo>
33 #include <osg/Vec3>
34 #include <osg/Vec4>
35 #include <osg/Version>
36 
37 namespace simgear
38 {
39 
40 class ShaderGeometry : public osg::Drawable
41 {
42     public:
ShaderGeometry()43         ShaderGeometry() :
44           varieties(1)
45         {
46                 setSupportsDisplayList(false);
47         }
48 
ShaderGeometry(int v)49         ShaderGeometry(int v) :
50           varieties(v)
51         {
52                 setSupportsDisplayList(false);
53         }
54 
55         /** Copy constructor using CopyOp to manage deep vs shallow copy.*/
ShaderGeometry(const ShaderGeometry & ShaderGeometry,const osg::CopyOp & copyop=osg::CopyOp::SHALLOW_COPY)56         ShaderGeometry(const ShaderGeometry& ShaderGeometry,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
57             osg::Drawable(ShaderGeometry,copyop) {}
58 
59         META_Object(flightgear, ShaderGeometry);
60 
61         virtual void drawImplementation(osg::RenderInfo& renderInfo) const;
62 
63         virtual osg::BoundingBox
64 #if OSG_VERSION_LESS_THAN(3,3,2)
65         computeBound()
66 #else
67         computeBoundingBox()
68 #endif
69         const;
70 
setGeometry(osg::Geometry * geometry)71         void setGeometry(osg::Geometry* geometry)
72         {
73             _geometry = geometry;
74         }
75 
76     void addObject(const osg::Vec3& position, float scale, int texture_index);
77 
78         osg::ref_ptr<osg::Geometry> _geometry;
79 
80         int varieties;
81         osg::ref_ptr<osg::Vec4Array> _posScaleArray;
82         osg::ref_ptr<osg::FloatArray> _vertexAttribArray;
83 
84     protected:
85 
~ShaderGeometry()86         virtual ~ShaderGeometry() {}
87 };
88 
89 }
90 #endif
91