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Initial commit of the bounding volume tree implementation.
[simgear.git] / simgear / scene / bvh / BVHStaticGeometry.cxx
1 // Copyright (C) 2008 - 2009  Mathias Froehlich - Mathias.Froehlich@web.de
2 //
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Library General Public
5 // License as published by the Free Software Foundation; either
6 // version 2 of the License, or (at your option) any later version.
7 //
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11 // Library General Public License for more details.
12 //
13 // You should have received a copy of the GNU General Public License
14 // along with this program; if not, write to the Free Software
15 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
16 //
17
18 #include "BVHStaticGeometry.hxx"
19
20 #include "BVHBoundingBoxVisitor.hxx"
21
22 namespace simgear {
23
24 BVHStaticGeometry::BVHStaticGeometry(const BVHStaticNode* staticNode,
25                                      const BVHStaticData* staticData) :
26     _staticNode(staticNode),
27     _staticData(staticData)
28 {
29 }
30
31 BVHStaticGeometry::~BVHStaticGeometry()
32 {
33 }
34
35 void
36 BVHStaticGeometry::accept(BVHVisitor& visitor)
37 {
38     visitor.apply(*this);
39 }
40
41 SGSphered
42 BVHStaticGeometry::computeBoundingSphere() const
43 {
44     BVHBoundingBoxVisitor bbv;
45     _staticNode->accept(bbv, *_staticData);
46     SGSphered sphere;
47     sphere.expandBy(SGBoxd(bbv.getBox()));
48     return sphere;
49 }
50
51 }