1 // Copyright (C) 2008 Tim Moore timoore@redhat.com
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.
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.
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.
19 # include <simgear_config.h>
24 #ifndef NO_OPENSCENEGRAPH_INTERFACE
26 osg::Matrix SGGeod::makeSimulationFrameRelative() const
28 SGQuatd hlOr = SGQuatd::fromLonLat(*this);
29 return osg::Matrix(toOsg(hlOr));
32 osg::Matrix SGGeod::makeSimulationFrame() const
34 osg::Matrix result(makeSimulationFrameRelative());
36 SGGeodesy::SGGeodToCart(*this, coord);
37 result.setTrans(toOsg(coord));
41 osg::Matrix SGGeod::makeZUpFrameRelative() const
43 osg::Matrix result(makeSimulationFrameRelative());
44 // 180 degree rotation around Y axis
45 osg::Quat flip(0.0, 1.0, 0.0, 0.0);
46 result.preMult(osg::Matrix(flip));
50 osg::Matrix SGGeod::makeZUpFrame() const
52 osg::Matrix result(makeZUpFrameRelative());
54 SGGeodesy::SGGeodToCart(*this, coord);
55 result.setTrans(toOsg(coord));