106 lines
3.1 KiB
C++
106 lines
3.1 KiB
C++
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// viewer_rph.hxx -- class for managing a Roll/Pitch/Heading viewer in
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// the flightgear world.
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//
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// Written by Curtis Olson, started August 1997.
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// overhaul started October 2000.
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//
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// Copyright (C) 1997 - 2000 Curtis L. Olson - curt@flightgear.org
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 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, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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#ifndef _VIEWER_RPH_HXX
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#define _VIEWER_RPH_HXX
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#ifndef __cplusplus
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# error This library requires C++
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#endif
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#include "viewer.hxx"
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// Define a structure containing view information
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class FGViewerRPH: public FGViewer {
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private:
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// geodetic view position
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sgdVec3 geod_view_pos;
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// view orientation (roll, pitch, heading)
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sgVec3 rph;
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// up vector for the view (usually point straight up through the
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// top of the aircraft
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sgVec3 view_up;
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// the vector pointing straight out the nose of the aircraft
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sgVec3 view_forward;
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// Transformation matrix for the view direction offset relative to
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// the AIRCRAFT matrix
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sgMat4 VIEW_OFFSET;
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// sg versions of our friendly matrices
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sgMat4 LOCAL, TRANS, LARC_TO_SSG;
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// Update the view volume, position, and orientation
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void update();
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public:
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// Constructor
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FGViewerRPH( void );
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// Destructor
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~FGViewerRPH( void );
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// Initialize a view class
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void init( void );
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//////////////////////////////////////////////////////////////////////
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// setter functions
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//////////////////////////////////////////////////////////////////////
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inline void set_geod_view_pos( double lon, double lat, double alt ) {
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// data should be in radians and meters asl
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set_dirty();
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// cout << "set_geod_view_pos = " << lon << ", " << lat << ", " << alt
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// << endl;
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sgdSetVec3( geod_view_pos, lon, lat, alt );
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}
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inline void set_rph( double r, double p, double h ) {
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// data should be in radians
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set_dirty();
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sgSetVec3( rph, r, p, h );
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}
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//////////////////////////////////////////////////////////////////////
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// accessor functions
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//////////////////////////////////////////////////////////////////////
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inline double *get_geod_view_pos() { return geod_view_pos; }
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inline float *get_rph() { return rph; }
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//////////////////////////////////////////////////////////////////////
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// derived values accessor functions
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//////////////////////////////////////////////////////////////////////
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};
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#endif // _VIEWER_RPH_HXX
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