blob: ba982ca40dfe588ae7156fb5982ef5ba9fd68324 (
plain)
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
|
using System;
using System.Linq;
using System.Timers;
namespace NucLedController
{
class FadeColourCyclerControlMode : IControlMode
{
private enum FadeDirection
{
Up,
Down
}
private readonly Timer timer;
private int currentColourIndex;
private readonly int maxColourIndex = LEDColour.AvailableColours.Count - 1;
private readonly byte brightnessStepping = 0x05;
private byte currentBrightness = 0x00;
private byte maxBrightness = 0x64;
private byte minBrightness = 0x00;
private FadeDirection fadeDirection = FadeDirection.Up;
public FadeColourCyclerControlMode(int intervalMs)
{
timer = new Timer();
timer.Elapsed += new ElapsedEventHandler(Tick);
// This should be enforced through the GUI but it causes the sliders input text box to behave weirdly when typing a single number
if (intervalMs < 100)
{
intervalMs = 100;
}
// There are 0x64 (100d) brightness values, so divide the desired interval time by brightness stepping to get the tick rate
timer.Interval = intervalMs / (100/brightnessStepping);
}
private void Tick(object source, ElapsedEventArgs e)
{
LEDController.SetLEDState(LEDTransition.AvailableTransitions.Find(t => t.Identifier.ToString() == "ALWAYS_ON"), LEDColour.AvailableColours.ElementAt(currentColourIndex), currentBrightness);
// TODO more of the fade duration should be spent at the lower brightness levels, since the perceived change in brightness is much more apparent at the bottom end.
// e.g. the perceived difference between 0x10 and 0x20 is much larger than 0x50 and 0x60, so scaling up linearly wastes a lot of time increasing imperceivable brightness changes at the top of the range.
// presumably its logarithmic, like with sound?
if (fadeDirection == FadeDirection.Up)
{
if(currentBrightness == maxBrightness)
{
// Fade up finished, start fading down
fadeDirection = FadeDirection.Down;
}
else
{
// Continue fading up
currentBrightness += brightnessStepping;
}
}
else // Fading down
{
if(currentBrightness == minBrightness)
{
// Fade cycle complete. Change colour and fade up
fadeDirection = FadeDirection.Up;
if (currentColourIndex == maxColourIndex)
{
currentColourIndex = 0;
}
else
{
currentColourIndex++;
}
}
else
{
// Continue fading down
currentBrightness -= brightnessStepping;
}
}
}
public void Start()
{
timer.Start();
}
public void Stop()
{
timer.Stop();
}
}
}
|