92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
/*
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PLIB - A Suite of Portable Game Libraries
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Copyright (C) 1998,2002 Steve Baker
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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For further information visit http://plib.sourceforge.net
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*/
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#include "config.h"
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#include "js.h"
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#include <simgear/debug/logstream.hxx>
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float jsJoystick::fudge_axis ( float value, int axis ) const
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{
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if ( value < center[axis] )
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{
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float xx = ( value - center[ axis ] ) /
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( center [ axis ] - min [ axis ] ) ;
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if ( xx < -saturate [ axis ] )
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return -1.0f ;
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if ( xx > -dead_band [ axis ] )
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return 0.0f ;
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xx = ( xx + dead_band [ axis ] ) /
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( saturate [ axis ] - dead_band [ axis ] ) ;
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return ( xx < -1.0f ) ? -1.0f : xx ;
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}
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else
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{
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float xx = ( value - center [ axis ] ) /
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( max [ axis ] - center [ axis ] ) ;
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if ( xx > saturate [ axis ] )
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return 1.0f ;
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if ( xx < dead_band [ axis ] )
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return 0.0f ;
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xx = ( xx - dead_band [ axis ] ) /
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( saturate [ axis ] - dead_band [ axis ] ) ;
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return ( xx > 1.0f ) ? 1.0f : xx ;
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}
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}
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void jsJoystick::read ( int *buttons, float *axes )
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{
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if ( error )
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{
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if ( buttons )
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*buttons = 0 ;
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if ( axes )
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for ( int i = 0 ; i < num_axes ; i++ )
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axes[i] = 0.0f ;
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return ;
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}
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float raw_axes [ _JS_MAX_AXES ] ;
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rawRead ( buttons, raw_axes ) ;
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if ( axes )
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for ( int i = 0 ; i < num_axes ; i++ )
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axes[i] = fudge_axis ( raw_axes[i], i ) ;
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}
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void jsSetError(int level, const std::string& msg)
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{
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SG_LOG(SG_INPUT, static_cast<sgDebugPriority>(level), msg);
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}
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