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
130
131
132
133
134
135
136
137
138
139
140
141
142
|
use std::time::{Duration, Instant};
use gilrs::{Axis, GamepadId, Gilrs};
use tracing::level_filters::LevelFilter;
use tracing_subscriber::EnvFilter;
use winit::{
application::ApplicationHandler,
event::{DeviceEvent, WindowEvent},
event_loop::{ControlFlow, EventLoop},
window::Window,
};
fn main() {
setup_logging();
let el = EventLoop::new().unwrap();
// We NEED poll here because of how gilrs does events
el.set_control_flow(ControlFlow::Poll);
let mut etch = Etch {
window: None,
gilrs: Gilrs::new().unwrap(),
dial: DialState::default(),
left_angle: 0.0,
next_check: Instant::now(),
};
el.run_app(&mut etch);
}
fn setup_logging() {
let env_filter =
EnvFilter::builder().with_default_directive(LevelFilter::INFO.into()).from_env().unwrap();
tracing_subscriber::fmt().with_env_filter(env_filter).init();
}
#[derive(Copy, Clone, Debug, Default)]
struct DialState {
left_x: f32,
left_y: f32,
right_x: f32,
right_y: f32,
}
#[derive(Debug)]
struct Etch {
window: Option<Window>,
gilrs: Gilrs,
dial: DialState,
left_angle: f32,
next_check: Instant,
}
const DIAL_SENSETIVITY: f32 = 2.0;
impl ApplicationHandler for Etch {
fn resumed(&mut self, event_loop: &winit::event_loop::ActiveEventLoop) {
self.window = Some(event_loop.create_window(Window::default_attributes()).unwrap());
}
fn window_event(
&mut self,
event_loop: &winit::event_loop::ActiveEventLoop,
window_id: winit::window::WindowId,
event: winit::event::WindowEvent,
) {
match event {
WindowEvent::CloseRequested => {
tracing::info!("close requested! shutting down.");
event_loop.exit();
}
WindowEvent::RedrawRequested => {
let previous_dial = self.dial;
while let Some(gilrs::Event {
id, event, time, ..
}) = self.gilrs.next_event()
{
match event {
gilrs::EventType::AxisChanged(axis, value, _code) => {
tracing::trace!("{axis:?} value={value}");
match axis {
Axis::LeftStickX => self.dial.left_x = value * 100.0,
Axis::LeftStickY => self.dial.left_y = value * 100.0,
Axis::RightStickX => self.dial.right_x = value * 100.0,
Axis::RightStickY => self.dial.right_y = value * 100.0,
_ => (),
}
}
_ => (),
}
}
if self.next_check.elapsed() > Duration::from_millis(50) {
let left_angle = xy_to_deg(self.dial.left_x, self.dial.left_y);
let left_delta = angle_delta(left_angle, self.left_angle);
self.left_angle = left_angle;
tracing::info!("ANGLE {left_angle} // {left_delta}v");
self.next_check = Instant::now();
}
self.window.as_ref().map(|w| w.request_redraw());
}
_ => (),
}
}
}
fn xy_to_deg(x: f32, y: f32) -> f32 {
let neg_x = x < 0.0;
let neg_y = y < 0.0;
let raw_angle = (y.abs() / x.abs()).atan().to_degrees();
let raw_angle2 = (x.abs() / y.abs()).atan().to_degrees();
match (neg_x, neg_y) {
(false, false) => raw_angle2 + 270.0,
(false, true) => raw_angle,
(true, true) => raw_angle2 + 90.0,
(true, false) => raw_angle + 180.0,
}
}
/// Compute the difference in angle between the right-hand side
/// and the left-hand side. Intelligently handles the zero-crossing.
/// lhs should be the newer value, rhs the older.
fn angle_delta(lhs: f32, rhs: f32) -> f32 {
if rhs >= 270.0 && lhs < 90.0 {
// It is likely we crossed zero in the clockwise direction
(lhs + 360.0) - rhs
} else if rhs < 90.0 && lhs > 270.0 {
// It is likely we crossed zero in the anti-clockwise direction
lhs - (rhs + 360.0)
} else {
lhs - rhs
}
}
|
