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61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
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// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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// Includes
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//
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#include <nel/misc/types_nl.h>
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#include "physics.h"
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//
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// Namespaces
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//
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using namespace std;
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using namespace NLMISC;
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namespace SBCLIENT {
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// -- -- this file exists twice
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CVector CTrajectory::eval(NLMISC::TLocalTime t) const
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{
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if (t < _StartTime) return _StartPosition;
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float ft = (float)(t-_StartTime)/(float)(_StopTime-_StartTime);
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ft = min(ft, 1.0f);
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CVector res = _EndPosition*ft + _StartPosition*(1.0f-ft);
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res.z += 0.3f*_Distance*_Distance/90.0f*(float)sin(Pi*ft);
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return res;
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}
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CVector CTrajectory::evalSpeed(NLMISC::TLocalTime t) const
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{
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if (t < _StartTime) return _StartPosition;
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float ft = (float)(t-_StartTime)/(float)(_StopTime-_StartTime);
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ft = min(ft, 1.0f);
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CVector res = (_EndPosition-_StartPosition).normed()*_Speed;
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res.z += 0.3f*_Distance*_Distance/90.0f*(float)Pi*(float)cos(Pi*ft);
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return res;
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}
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} /* namespace SBCLIENT */
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/* end of file */
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