summaryrefslogtreecommitdiff
path: root/keyboards/massdrop/alt/keymaps/reywood/rgb_matrix_user.c
blob: 9ea8fbede49ff38aa9cdabc184df36aa812994ae (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
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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
#include "quantum.h"
#include "md_rgb_matrix.h"

extern issi3733_led_t *led_cur;
extern uint8_t led_per_run;
extern issi3733_led_t *lede;
extern issi3733_led_t led_map[];

static uint16_t last_boost_update;
static uint8_t led_boosts[ISSI3733_LED_COUNT];
static uint8_t led_boost_index;
static uint8_t led_cur_index;

#define LED_BOOST_REFRESH_INTERVAL_IN_MS 40
#define LED_BOOST_DECAY 0.7
#define LED_BOOST_PROPAGATE 0.5
#define LED_BOOST_PEAK 100

#define MIN_RGB 0x050008
#define MIN_R (MIN_RGB >> 16 & 0xff)
#define MIN_G (MIN_RGB >> 8 & 0xff)
#define MIN_B (MIN_RGB & 0xff)

#define MAX_RGB 0xc26eff
#define MAX_R (MAX_RGB >> 16 & 0xff)
#define MAX_G (MAX_RGB >> 8 & 0xff)
#define MAX_B (MAX_RGB & 0xff)

#define UNDERGLOW_RGB 0x4f002e
#define UNDERGLOW_R (UNDERGLOW_RGB >> 16 & 0xff)
#define UNDERGLOW_G (UNDERGLOW_RGB >> 8 & 0xff)
#define UNDERGLOW_B (UNDERGLOW_RGB & 0xff)

#define UNDERGLOW_SCAN_CODE 255

#define max(a, b) (((a) > (b)) ? (a) : (b))

#define __ -1
static const uint8_t KEY_TO_LED_MAP[MATRIX_ROWS][MATRIX_COLS] = {
  { 0,  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},
};

#define KEY_LED_COUNT 67
#define KP(c, r) { .col = c, .row = r } // shorthand for keypos_t
static const keypos_t LED_TO_KEY_MAP[KEY_LED_COUNT] = {
  KP(0, 0), KP(1, 0), KP(2, 0), KP(3, 0), KP(4, 0), KP(5, 0), KP(6, 0), KP(7, 0), KP(8, 0), KP(9, 0), KP(10, 0), KP(11, 0), KP(12, 0), KP(13, 0), KP(14, 0),
  KP(0, 1), KP(1, 1), KP(2, 1), KP(3, 1), KP(4, 1), KP(5, 1), KP(6, 1), KP(7, 1), KP(8, 1), KP(9, 1), KP(10, 1), KP(11, 1), KP(12, 1), KP(13, 1), KP(14, 1),
  KP(0, 2), KP(1, 2), KP(2, 2), KP(3, 2), KP(4, 2), KP(5, 2), KP(6, 2), KP(7, 2), KP(8, 2), KP(9, 2), KP(10, 2), KP(11, 2),            KP(13, 2), KP(14, 2),
  KP(0, 3),           KP(2, 3), KP(3, 3), KP(4, 3), KP(5, 3), KP(6, 3), KP(7, 3), KP(8, 3), KP(9, 3), KP(10, 3), KP(11, 3), KP(12, 3), KP(13, 3), KP(14, 3),
  KP(0, 4), KP(1, 4), KP(2, 4),                               KP(6, 4),                               KP(10, 4), KP(11, 4), KP(12, 4), KP(13, 4), KP(14, 4),
};


static void update_led_boosts(void);
static void update_led_cur_rgb_values(void);
static void set_nearest_led_to_max(uint8_t col, uint8_t row);
static uint8_t calculate_new_color_component_value(uint8_t max, uint8_t min);
static void calculate_new_led_boosts(uint8_t new_led_boosts[]);
static uint8_t calculate_new_led_boost_at(int index);
static uint8_t get_propagated_boost_from_neighbors(int led_position);
static uint8_t get_led_boost_at_keypos(uint8_t row, uint8_t col);
static void set_new_led_boosts(uint8_t* new_led_boosts);
static uint8_t map_key_position_to_led_index(uint8_t col, uint8_t row);


void rgb_matrix_init_user(void) {
  for (int i = 0; i < ISSI3733_LED_COUNT; i++) {
    led_boosts[i] = 0;
  }
  last_boost_update = timer_read();
  led_boost_index = 0;
  led_cur_index = 0;
}

void md_rgb_matrix_run(void) {
  uint8_t led_this_run = 0;

  if (led_cur == 0) { //Denotes start of new processing cycle in the case of chunked processing
    led_cur = led_map;
    led_cur_index = 0;
  }
  update_led_boosts();

  while (led_cur < lede && led_this_run < led_per_run) {
    update_led_cur_rgb_values();

    led_cur++;
    led_cur_index++;
    led_this_run++;
  }
}

void rgb_matrix_record_key_press(keyrecord_t *record) {
  if (record->event.pressed) {
    keypos_t key = record->event.key;
    set_nearest_led_to_max(key.col, key.row);
  }
}


static void update_led_boosts(void) {
  if (timer_elapsed(last_boost_update) > LED_BOOST_REFRESH_INTERVAL_IN_MS) {
    last_boost_update = timer_read();

    uint8_t new_led_boosts[ISSI3733_LED_COUNT];
    calculate_new_led_boosts(new_led_boosts);
    set_new_led_boosts(new_led_boosts);
  }
}

static void update_led_cur_rgb_values(void) {
  if (led_cur->scan == UNDERGLOW_SCAN_CODE) {
    *led_cur->rgb.r = UNDERGLOW_R;
    *led_cur->rgb.g = UNDERGLOW_G;
    *led_cur->rgb.b = UNDERGLOW_B;
  } else {
    *led_cur->rgb.r = calculate_new_color_component_value(MAX_R, MIN_R);
    *led_cur->rgb.g = calculate_new_color_component_value(MAX_G, MIN_G);
    *led_cur->rgb.b = calculate_new_color_component_value(MAX_B, MIN_B);
  }
}

static void set_nearest_led_to_max(uint8_t col, uint8_t row) {
  uint8_t led_index = map_key_position_to_led_index(col, row);
  if (led_index >= 0 && led_index < ISSI3733_LED_COUNT) {
    led_boosts[led_index] = LED_BOOST_PEAK;
  }
}

static uint8_t calculate_new_color_component_value(uint8_t max, uint8_t min) {
  uint8_t current_boost = led_boosts[led_cur_index];
  return (float)(max - min) * current_boost / LED_BOOST_PEAK + min;
}

static void calculate_new_led_boosts(uint8_t new_led_boosts[]) {
  for (int i = 0; i < ISSI3733_LED_COUNT; i++) {
    new_led_boosts[i] = calculate_new_led_boost_at(i);
  }
}

static uint8_t calculate_new_led_boost_at(int index) {
  uint8_t decayed_boost = led_boosts[index] * LED_BOOST_DECAY;
  uint8_t propagated_boost = get_propagated_boost_from_neighbors(index);
  uint8_t new_boost = (propagated_boost > decayed_boost) ? propagated_boost : decayed_boost;
  if (new_boost > LED_BOOST_PEAK) {
    new_boost = LED_BOOST_PEAK;
  }
  return new_boost;
}

static uint8_t get_propagated_boost_from_neighbors(int led_position) {
  if (led_position < 0 || led_position >= KEY_LED_COUNT) {
    return 0;
  }
  keypos_t led_keypos = LED_TO_KEY_MAP[led_position];
  uint8_t top_boost    = get_led_boost_at_keypos(led_keypos.row - 1, led_keypos.col);
  uint8_t bottom_boost = get_led_boost_at_keypos(led_keypos.row + 1, led_keypos.col);
  uint8_t left_boost   = get_led_boost_at_keypos(led_keypos.row, led_keypos.col - 1);
  uint8_t right_boost  = get_led_boost_at_keypos(led_keypos.row, led_keypos.col + 1);
  uint8_t max_boost = max(max(top_boost, bottom_boost), max(left_boost, right_boost));
  if (max_boost > LED_BOOST_PEAK) {
    max_boost = LED_BOOST_PEAK;
  }
  return max_boost * LED_BOOST_PROPAGATE;
}

static uint8_t get_led_boost_at_keypos(uint8_t row, uint8_t col) {
  if (row < 0 || row >= MATRIX_ROWS || col < 0 || col >= MATRIX_COLS) {
    return 0;
  }
  uint8_t led_index = KEY_TO_LED_MAP[row][col];
  if (led_index < 0) {
    return 0;
  }
  return led_boosts[led_index];
}

static void set_new_led_boosts(uint8_t* new_led_boosts) {
  for (int i = 0; i < ISSI3733_LED_COUNT; i++) {
    led_boosts[i] = new_led_boosts[i];
  }
}

static uint8_t map_key_position_to_led_index(uint8_t col, uint8_t row) {
  if (row >= 0 && row < MATRIX_ROWS && col >= 0 && col < MATRIX_COLS) {
    return KEY_TO_LED_MAP[row][col];
  }
  return -1;
}