1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
#import "JOYAxis.h"
#import "JOYElement.h"
@implementation JOYAxis
{
JOYElement *_element;
double _state;
double _min;
}
+ (NSString *)usageToString: (JOYAxisUsage) usage
{
if (usage < JOYAxisUsageNonGenericMax) {
return inline_const(NSString *[], {
@"None",
@"Analog L1",
@"Analog L2",
@"Analog L3",
@"Analog R1",
@"Analog R2",
@"Analog R3",
@"Slider",
@"Dial",
@"Wheel",
@"Rudder",
@"Throttle",
@"Accelerator",
@"Brake",
})[usage];
}
if (usage >= JOYAxisUsageGeneric0) {
return [NSString stringWithFormat:@"Generic Analog Control %d", usage - JOYAxisUsageGeneric0];
}
return [NSString stringWithFormat:@"Unknown Usage Axis %d", usage];
}
- (NSString *)usageString
{
return [self.class usageToString:_usage];
}
- (uint64_t)uniqueID
{
return _element.uniqueID | (uint64_t)self.combinedIndex << 32;
}
- (NSString *)description
{
return [NSString stringWithFormat:@"<%@: %p, %@ (%llx); State: %f%%>", self.className, self, self.usageString, self.uniqueID, _state * 100];
}
- (instancetype)initWithElement:(JOYElement *)element
{
self = [super init];
if (!self) return self;
_element = element;
if (element.usagePage == kHIDPage_GenericDesktop) {
switch (element.usage) {
case kHIDUsage_GD_Slider: _usage = JOYAxisUsageSlider; break;
case kHIDUsage_GD_Dial: _usage = JOYAxisUsageDial; break;
case kHIDUsage_GD_Wheel: _usage = JOYAxisUsageWheel; break;
default:
_usage = JOYAxisUsageGeneric0 + element.usage - kHIDUsage_GD_X + 1;
break;
}
}
else if (element.usagePage == kHIDPage_Simulation) {
switch (element.usage) {
case kHIDUsage_Sim_Accelerator: _usage = JOYAxisUsageAccelerator; break;
case kHIDUsage_Sim_Brake: _usage = JOYAxisUsageBrake; break;
case kHIDUsage_Sim_Rudder: _usage = JOYAxisUsageRudder; break;
case kHIDUsage_Sim_Throttle: _usage = JOYAxisUsageThrottle; break;
}
}
_min = 1.0;
return self;
}
- (double) value
{
return _state;
}
- (bool)updateState
{
double min = _element.min;
double max = _element.max;
if (min == max) return false;
double old = _state;
double unnormalized = ([_element value] - min) / (max - min);
if (unnormalized < _min) {
_min = unnormalized;
}
if (_min != 1) {
_state = (unnormalized - _min) / (1 - _min);
}
return old != _state;
}
- (JOYButtonUsage)equivalentButtonUsage
{
if (self.usage >= JOYAxisUsageGeneric0) {
return self.usage - JOYAxisUsageGeneric0 + JOYButtonUsageGeneric0;
}
switch (self.usage) {
case JOYAxisUsageL1: return JOYButtonUsageL1;
case JOYAxisUsageL2: return JOYButtonUsageL2;
case JOYAxisUsageL3: return JOYButtonUsageL3;
case JOYAxisUsageR1: return JOYButtonUsageR1;
case JOYAxisUsageR2: return JOYButtonUsageR2;
case JOYAxisUsageR3: return JOYButtonUsageR3;
case JOYAxisUsageSlider: return JOYButtonUsageSlider;
case JOYAxisUsageDial: return JOYButtonUsageDial;
case JOYAxisUsageWheel: return JOYButtonUsageWheel;
case JOYAxisUsageRudder: return JOYButtonUsageRudder;
case JOYAxisUsageThrottle: return JOYButtonUsageThrottle;
case JOYAxisUsageAccelerator: return JOYButtonUsageAccelerator;
case JOYAxisUsageBrake: return JOYButtonUsageBrake;
default: return JOYButtonUsageNone;
}
}
@end
|
