1 /*
2 PLIB - A Suite of Portable Game Libraries
3 Copyright (C) 1998,2002 Steve Baker
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19 For further information visit http://plib.sourceforge.net
20
21 */
22
23 #include "config.h"
24
25 #include "FlightGear_js.h"
26
27 #include <simgear/debug/logstream.hxx>
28
fudge_axis(float value,int axis) const29 float jsJoystick::fudge_axis ( float value, int axis ) const
30 {
31 if ( value < center[axis] )
32 {
33 float xx = ( value - center[ axis ] ) /
34 ( center [ axis ] - min [ axis ] ) ;
35
36 if ( xx < -saturate [ axis ] )
37 return -1.0f ;
38
39 if ( xx > -dead_band [ axis ] )
40 return 0.0f ;
41
42 xx = ( xx + dead_band [ axis ] ) /
43 ( saturate [ axis ] - dead_band [ axis ] ) ;
44
45 return ( xx < -1.0f ) ? -1.0f : xx ;
46 }
47 else
48 {
49 float xx = ( value - center [ axis ] ) /
50 ( max [ axis ] - center [ axis ] ) ;
51
52 if ( xx > saturate [ axis ] )
53 return 1.0f ;
54
55 if ( xx < dead_band [ axis ] )
56 return 0.0f ;
57
58 xx = ( xx - dead_band [ axis ] ) /
59 ( saturate [ axis ] - dead_band [ axis ] ) ;
60
61 return ( xx > 1.0f ) ? 1.0f : xx ;
62 }
63 }
64
65
read(int * buttons,float * axes)66 void jsJoystick::read ( int *buttons, float *axes )
67 {
68 if ( error )
69 {
70 if ( buttons )
71 *buttons = 0 ;
72
73 if ( axes )
74 for ( int i = 0 ; i < num_axes ; i++ )
75 axes[i] = 0.0f ;
76
77 return ;
78 }
79
80 float raw_axes [ _JS_MAX_AXES ] ;
81
82 rawRead ( buttons, raw_axes ) ;
83
84 if ( axes )
85 for ( int i = 0 ; i < num_axes ; i++ )
86 axes[i] = fudge_axis ( raw_axes[i], i ) ;
87 }
88
jsSetError(int level,const std::string & msg)89 void jsSetError(int level, const std::string& msg)
90 {
91 SG_LOG(SG_INPUT, static_cast<sgDebugPriority>(level), msg);
92 }
93