forked from patrickjahns/RGBWWLed
/
RGBWWLedColor.cpp
532 lines (471 loc) · 19.6 KB
/
RGBWWLedColor.cpp
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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
/**
* RGBWWLed - simple Library for controlling RGB WarmWhite ColdWhite LEDs via PWM
* @file
* @author Patrick Jahns http://github.com/patrickjahns
*
* All files of this project are provided under the LGPL v3 license.
*/
#include "RGBWWLed.h"
#include "RGBWWLedColor.h"
RGBWWColorUtils::RGBWWColorUtils() {
_colormode = RGBWWCW;
_hsvmodel = RAW;
_WarmWhiteKelvin = RGBWW_WARMWHITEKELVIN;
_ColdWhiteKelvin = RGBWW_COLDWHITEKELVIN;
createHueWheel();
setBrightnessCorrection(100, 100, 100, 100, 100);
}
void RGBWWColorUtils::setColorMode(RGBWW_COLORMODE mode) {
debug_d("COLORMODE %i", mode);
_colormode = mode;
}
RGBWW_COLORMODE RGBWWColorUtils::getColorMode() const {
debug_d("COLORMODE %i", _colormode);
return _colormode;
}
void RGBWWColorUtils::setHSVmodel(RGBWW_HSVMODEL model) {
debug_d("HSVMODE %i", model);
_hsvmodel = model;
}
RGBWW_HSVMODEL RGBWWColorUtils::getHSVmodel() const {
debug_d("HSVMODE %i", _hsvmodel);
return _hsvmodel;
}
void RGBWWColorUtils::setWhiteTemperature(int WarmWhite, int ColdWhite) {
_WarmWhiteKelvin = WarmWhite;
_ColdWhiteKelvin = ColdWhite;
}
void RGBWWColorUtils::getWhiteTemperature(int& WarmWhite, int& ColdWhite) const {
WarmWhite = _WarmWhiteKelvin;
ColdWhite = _ColdWhiteKelvin;
}
void RGBWWColorUtils::setBrightnessCorrection(int r, int g, int b, int ww, int cw) {
_BrightnessFactor[RGBWW_CHANNELS::RED] = (constrain(r, 0, 100) * RGBWW_CALC_MAXVAL) / 100;
_BrightnessFactor[RGBWW_CHANNELS::GREEN] = (constrain(g, 0, 100) * RGBWW_CALC_MAXVAL) / 100;
_BrightnessFactor[RGBWW_CHANNELS::BLUE] = (constrain(b, 0, 100) * RGBWW_CALC_MAXVAL) / 100;
_BrightnessFactor[RGBWW_CHANNELS::WW] = (constrain(ww, 0, 100) * RGBWW_CALC_MAXVAL) / 100;
_BrightnessFactor[RGBWW_CHANNELS::CW] = (constrain(cw, 0, 100) * RGBWW_CALC_MAXVAL) / 100;
}
;
void RGBWWColorUtils::getBrightnessCorrection(int& r, int& g, int& b, int& ww, int& cw) const {
r = (_BrightnessFactor[RGBWW_CHANNELS::RED] * 100) / RGBWW_CALC_MAXVAL;
g = (_BrightnessFactor[RGBWW_CHANNELS::GREEN] * 100) / RGBWW_CALC_MAXVAL;
b = (_BrightnessFactor[RGBWW_CHANNELS::BLUE] * 100) / RGBWW_CALC_MAXVAL;
ww = (_BrightnessFactor[RGBWW_CHANNELS::WW] * 100) / RGBWW_CALC_MAXVAL;
cw = (_BrightnessFactor[RGBWW_CHANNELS::CW] * 100) / RGBWW_CALC_MAXVAL;
}
void RGBWWColorUtils::correctBrightness(ChannelOutput& output) const {
output.red = (output.red * _BrightnessFactor[RGBWW_CHANNELS::RED]) / RGBWW_CALC_MAXVAL;
output.green = (output.green * _BrightnessFactor[RGBWW_CHANNELS::GREEN]) / RGBWW_CALC_MAXVAL;
output.blue = (output.blue * _BrightnessFactor[RGBWW_CHANNELS::BLUE]) / RGBWW_CALC_MAXVAL;
output.warmwhite = (output.warmwhite * _BrightnessFactor[RGBWW_CHANNELS::WW]) / RGBWW_CALC_MAXVAL;
output.coldwhite = (output.coldwhite * _BrightnessFactor[RGBWW_CHANNELS::CW]) / RGBWW_CALC_MAXVAL;
}
void RGBWWColorUtils::setHSVcorrection(float red, float yellow, float green, float cyan, float blue, float magenta) {
// reset color wheel before applying any changes
// otherwise we apply changes to any previous colorwheel
createHueWheel();
//correct sector 1
_HueWheelSectorWidth[0] -= parseColorCorrection(red);
_HueWheelSectorWidth[0] += parseColorCorrection(yellow);
_HueWheelSector[1] += parseColorCorrection(yellow);
//correct sector 2
_HueWheelSectorWidth[1] -= parseColorCorrection(yellow);
_HueWheelSectorWidth[1] += parseColorCorrection(green);
_HueWheelSector[2] += parseColorCorrection(green);
//correct sector 3
_HueWheelSectorWidth[2] -= parseColorCorrection(green);
_HueWheelSectorWidth[2] += parseColorCorrection(cyan);
_HueWheelSector[3] += parseColorCorrection(cyan);
//correct sector 4
_HueWheelSectorWidth[3] -= parseColorCorrection(cyan);
_HueWheelSectorWidth[3] += parseColorCorrection(blue);
_HueWheelSector[4] += parseColorCorrection(blue);
//correct sector 5
_HueWheelSectorWidth[4] -= parseColorCorrection(blue);
_HueWheelSectorWidth[4] += parseColorCorrection(magenta);
_HueWheelSector[5] += parseColorCorrection(magenta);
//correct sector 6
_HueWheelSectorWidth[5] -= parseColorCorrection(magenta);
_HueWheelSectorWidth[5] += parseColorCorrection(red);
_HueWheelSector[6] += parseColorCorrection(red);
_HueWheelSector[0] += parseColorCorrection(red);
}
void RGBWWColorUtils::getHSVcorrection(float& red, float& yellow, float& green, float& cyan, float& blue, float& magenta) const {
red = -1 * (float(_HueWheelSector[6] - 6 * RGBWW_CALC_MAXVAL) / float(RGBWW_CALC_MAXVAL)) * 60.0;
yellow = -1 * (float(_HueWheelSector[1] - 1 * RGBWW_CALC_MAXVAL) / float(RGBWW_CALC_MAXVAL)) * 60.0;
green = -1 * (float(_HueWheelSector[2] - 2 * RGBWW_CALC_MAXVAL) / float(RGBWW_CALC_MAXVAL)) * 60.0;
cyan = -1 * (float(_HueWheelSector[3] - 3 * RGBWW_CALC_MAXVAL) / float(RGBWW_CALC_MAXVAL)) * 60.0;
blue = -1 * (float(_HueWheelSector[4] - 4 * RGBWW_CALC_MAXVAL) / float(RGBWW_CALC_MAXVAL)) * 60.0;
magenta = -1 * (float(_HueWheelSector[5] - 5 * RGBWW_CALC_MAXVAL) / float(RGBWW_CALC_MAXVAL)) * 60.0;
}
void RGBWWColorUtils::whiteBalance(RGBWCT& rgbw, ChannelOutput& output) const {
/*
* White balance will only be done on the w part
* - a calibration is needed in order to be able to calculate the parts of
* red/green/blue for calculating color temperatur
*
* color temperature will only be calculated for the "white part" in rgb
* due to differences between led types, manufacturers and also different
* (perceived) output levels with pwm and for different colors this is more
* an estimation and should never be taken as a professional calculation
*
*/
output.r = rgbw.r;
output.g = rgbw.g;
output.b = rgbw.b;
switch (_colormode) {
case RGBWWCW:
if (_WarmWhiteKelvin <= rgbw.ct && _ColdWhiteKelvin >= rgbw.ct) {
int wwfactor = ((_ColdWhiteKelvin - rgbw.ct) * RGBWW_CALC_MAXVAL) / (_ColdWhiteKelvin - _WarmWhiteKelvin);
//balance between CW and WW Leds
output.warmwhite = (rgbw.w * wwfactor) / RGBWW_CALC_MAXVAL;
output.coldwhite = rgbw.w - output.warmwhite;
} else {
// if kelvin outside range - different calculation algorithm
// for now we asume a "neutral white" (0.5 CW, 0.5 WW)
output.warmwhite = rgbw.w / 2;
output.coldwhite = rgbw.w / 2;
}
break;
case RGBCW:
//TODO implement valid algorithm
output.warmwhite = 0;
output.coldwhite = rgbw.w;
break;
case RGBWW:
//TODO implement valid algorithm
output.warmwhite = rgbw.w;
output.coldwhite = 0;
break;
case RGB:
//TODO implement valid algorithm
output.r += rgbw.w;
output.g += rgbw.w;
output.b += rgbw.w;
output.coldwhite = 0;
output.warmwhite = 0;
break;
default:
break;
}
}
void RGBWWColorUtils::HSVtoRGB(const HSVCT& hsvk, RGBWCT& rgbwk) const {
HSVtoRGB(hsvk, rgbwk, _hsvmodel);
}
void RGBWWColorUtils::HSVtoRGB(const HSVCT& hsvk, RGBWCT& rgbwk, RGBWW_HSVMODEL mode) const {
switch (mode) {
case SPEKTRUM: {
HSVtoRGBspektrum(hsvk, rgbwk);
break;
}
case RAINBOW: {
// TODO: transform normal HUE range to rainbowHue range
// map 0 - 60 to 0-90
// map 60 - 120 to 90 - 135
// map 120 - 180 to 135 - 180
// map 180 - 240 to 180 - 225
// map 240 - 300 to 225 - 270
// map 300 - 360 to 270 - 360
HSVtoRGBrainbow(hsvk, rgbwk);
break;
}
default: {
HSVtoRGBraw(hsvk, rgbwk);
break;
}
}
}
// Method is based one the method from FASTLed
// https://github.com/FastLED/FastLED/wiki/FastLED-HSV-Colors#color-map-rainbow-vs-spectrum
// https://github.com/FastLED/FastLED/blob/master/colorutils.h
//
#define rainbow_third int(RGBWW_CALC_MAXVAL / 3)
#define rainbow_two_third int(rainbow_third *2)
#define rainbow_sector_width int (RGBWW_CALC_HUEWHEELMAX / 8)
void RGBWWColorUtils::HSVtoRGBrainbow(const HSVCT& hsvk, RGBWCT& rgbwk) const {
int val, hue, sat, r, g, b, chroma, m, sector;
hue = hsvk.h;
val = hsvk.v;
sat = hsvk.s;
//gamma correction
//val = RGBWW_dim_curve[hsvk.v];
//sat = RGBWW_PWMMAXVAL - RGBWW_dim_curve[RGBWW_PWMMAXVAL-sat];
if (sat == 0) {
// color is grayscale
rgbwk.r = 0;
rgbwk.g = 0;
rgbwk.b = 0;
rgbwk.w = val;
} else {
chroma = (sat * val) / RGBWW_CALC_MAXVAL;
m = val - chroma;
sector = hue / rainbow_sector_width;
hue = hue - sector * rainbow_sector_width;
if (sector < 4) {
//sector 0 - 3
if (sector < 1) {
// red - > orange
debug_d("HSVtoRGBrainbow sector 0");
r = (chroma * (RGBWW_CALC_MAXVAL - (rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
g = (chroma * ((rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
b = 0;
} else if (sector < 2) {
// orange -> yellow
debug_d("HSVtoRGBrainbow sector 1");
r = (chroma * (rainbow_two_third)) / RGBWW_CALC_MAXVAL;
g = (chroma * (rainbow_third + (rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
b = 0;
} else if (sector < 3) {
// yellow -> green
debug_d("HSVtoRGBrainbow sector 2");
r = (chroma * (rainbow_two_third - (rainbow_two_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
g = (chroma * (rainbow_two_third + (rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
b = 0;
} else {
// green -> aqua
debug_d("HSVtoRGBrainbow sector 3");
r = 0;
g = (chroma * (RGBWW_CALC_MAXVAL - (rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
b = (chroma * ((rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
}
} else {
//sector 4 - 7
if (sector < 5) {
// aqua -> blue
debug_d("HSVtoRGBrainbow sector 4");
r = 0;
g = (chroma * (rainbow_two_third - (rainbow_two_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
b = (chroma * (rainbow_third + (rainbow_two_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
} else if (sector < 6) {
// blue -> purple
debug_d("HSVtoRGBrainbow sector 5");
r = (chroma * ((rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
g = 0;
b = (chroma * (RGBWW_CALC_MAXVAL - (rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
} else if (sector < 7) {
// purple -> pink
debug_d("HSVtoRGBrainbow sector 6");
r = (chroma * (rainbow_third + (rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
g = 0;
b = (chroma * (rainbow_two_third - (rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
} else {
// pink -> red
debug_d("HSVtoRGBrainbow sector 7");
r = (chroma * (rainbow_two_third + (rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
g = 0;
b = (chroma * (rainbow_third - (rainbow_third * hue) / rainbow_sector_width)) / RGBWW_CALC_MAXVAL;
}
}
rgbwk.r = r;
rgbwk.g = g;
rgbwk.b = b;
rgbwk.w = m;
}
debug_d("HSVtoRGBrainbow R %i | G %i | B %i | W %i", rgbwk.r, rgbwk.g, rgbwk.b, rgbwk.w);
}
void RGBWWColorUtils::HSVtoRGBspektrum(const HSVCT& hsvk, RGBWCT& rgbwk) const {
int val, hue, sat, r, g, b, fract, chroma, half_chroma, m;
hue = hsvk.h;
val = hsvk.v;
sat = hsvk.s;
//gamma correction
//val = RGBWW_dim_curve[hsvk.v];
//sat = RGBWW_PWMMAXVAL - RGBWW_dim_curve[RGBWW_PWMMAXVAL-sat];
if (sat == 0) {
// color is grayscale
rgbwk.r = 0;
rgbwk.g = 0;
rgbwk.b = 0;
rgbwk.w = val;
} else {
chroma = (sat * val) / RGBWW_CALC_MAXVAL;
half_chroma = chroma >> 1;
m = val - chroma;
if (hue < _HueWheelSector[0] || (hue > _HueWheelSector[5] && hue <= _HueWheelSector[6])) {
debug_d("HSVtoRGBspektrum Sector 6");
if (hue < _HueWheelSector[0]) {
fract = RGBWW_CALC_MAXVAL + hue;
} else {
fract = hue - _HueWheelSector[5];
}
fract = (half_chroma * ((RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[5])) / RGBWW_CALC_MAXVAL;
r = half_chroma + fract;
g = 0;
b = half_chroma - fract;
} else if (hue <= _HueWheelSector[1] || hue > _HueWheelSector[6]) {
// Sector 1
debug_d("HSVtoRGBspektrum Sector 1");
if (hue > _HueWheelSector[6]) {
fract = hue - _HueWheelSector[6];
} else {
fract = hue + (RGBWW_CALC_HUEWHEELMAX - _HueWheelSector[6]);
}
fract = (half_chroma * ((RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[0])) / RGBWW_CALC_MAXVAL;
r = chroma - fract;
g = fract;
b = 0;
} else if (hue <= _HueWheelSector[2]) {
// Sector 2
debug_d("HSVtoRGBspektrum Sector 2");
fract = hue - _HueWheelSector[1];
fract = (half_chroma * ((RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[1])) / RGBWW_CALC_MAXVAL;
r = half_chroma - fract;
g = half_chroma + fract;
b = 0;
} else if (hue <= _HueWheelSector[3]) {
// Sector 3
debug_d("HSVtoRGBspektrum Sector 3");
fract = hue - _HueWheelSector[2];
fract = (half_chroma * ((RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[2])) / RGBWW_CALC_MAXVAL;
r = 0;
g = chroma - fract;
b = fract;
} else if (hue <= _HueWheelSector[4]) {
// Sector 4
debug_d("HSVtoRGBspektrum Sector 4");
fract = hue - _HueWheelSector[3];
fract = (half_chroma * ((RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[3])) / RGBWW_CALC_MAXVAL;
r = 0;
g = half_chroma - fract;
b = half_chroma + fract;
} else {
// Sector 5
debug_d("HSVtoRGBspektrum Sector 5");
fract = hue - _HueWheelSector[4];
fract = (half_chroma * ((RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[4])) / RGBWW_CALC_MAXVAL;
r = fract;
g = 0;
b = chroma - fract;
}
rgbwk.r = r;
rgbwk.g = g;
rgbwk.b = b;
rgbwk.w = m;
}
debug_d("HSVtoRGBspektrum R %i | G %i | B %i | W %i", rgbwk.r, rgbwk.g, rgbwk.b, rgbwk.w);
}
void RGBWWColorUtils::HSVtoRGBraw(const HSVCT& hsvk, RGBWCT& rgbwk) const {
int val, hue, sat, r, g, b, fract, chroma, m;
hue = hsvk.h;
val = hsvk.v;
sat = hsvk.s;
//gamma correction
//val = RGBWW_dim_curve[hsvk.v];
//sat = RGBWW_PWMMAXVAL - RGBWW_dim_curve[RGBWW_PWMMAXVAL-sat];
rgbwk.ct = hsvk.ct;
if (sat == 0) {
/* color is grayscale */
rgbwk.r = 0;
rgbwk.g = 0;
rgbwk.b = 0;
rgbwk.w = val;
} else {
/*
* We have 6 sectors
* We need 7 "borders" to incorporate the shift oft sectors
*
* Example: 8bit values
* Sector 1 is from 0 - 255. We need border 0 as lower border, 255 as upper border.
* Sector 6 is from 1275 - 1530. Lower border 1275, upper border 1530
*
* Apply a color correct for red with +10deg (value 25) results in
* Sector 1 from 0 - 255 & 1505 - 1530
* Sector 6 from 1275 - 1505
* Apply a color correct for red with -10deg (value 25) results in
* Sector 1 from 25 - 255
* Sector 6 from 1275 - 1530 && 0 - 25
*/
chroma = (sat * val) / RGBWW_CALC_MAXVAL;
m = val - chroma;
if (hue < _HueWheelSector[0] || (hue > _HueWheelSector[5] && hue <= _HueWheelSector[6])) {
debug_d("HSVtoRGBraw Sector 6");
if (hue < _HueWheelSector[0]) {
fract = RGBWW_CALC_MAXVAL + hue;
} else {
fract = hue - _HueWheelSector[5];
}
r = chroma;
g = 0;
b = (chroma * (RGBWW_CALC_MAXVAL - (RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[5])) / RGBWW_CALC_MAXVAL;
} else if (hue <= _HueWheelSector[1] || hue > _HueWheelSector[6]) {
// Sector 1
debug_d("HSVtoRGBraw Sector 1");
if (hue > _HueWheelSector[6]) {
fract = hue - _HueWheelSector[6];
} else {
fract = hue + (RGBWW_CALC_HUEWHEELMAX - _HueWheelSector[6]);
}
r = chroma;
g = (chroma * ((RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[0])) / RGBWW_CALC_MAXVAL;
b = 0;
} else if (hue <= _HueWheelSector[2]) {
// Sector 2
debug_d("HSVtoRGBraw Sector 2");
fract = hue - _HueWheelSector[1];
r = (chroma * (RGBWW_CALC_MAXVAL - (RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[1])) / RGBWW_CALC_MAXVAL;
g = chroma;
b = 0;
} else if (hue <= _HueWheelSector[3]) {
// Sector 3
debug_d("HSVtoRGBraw Sector 3");
fract = hue - _HueWheelSector[2];
r = 0;
g = chroma;
b = (chroma * ((RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[2])) / RGBWW_CALC_MAXVAL;
} else if (hue <= _HueWheelSector[4]) {
// Sector 4
debug_d("HSVtoRGBraw Sector 4");
fract = hue - _HueWheelSector[3];
r = 0;
g = (chroma * (RGBWW_CALC_MAXVAL - (RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[3])) / RGBWW_CALC_MAXVAL;
b = chroma;
} else {
// Sector 5
debug_d("HSVtoRGBraw Sector 5");
fract = hue - _HueWheelSector[4];
r = (chroma * ((RGBWW_CALC_MAXVAL * fract) / _HueWheelSectorWidth[4])) / RGBWW_CALC_MAXVAL;
g = 0;
b = chroma;
}
// m equals the white part
// for rgbw we use it for the white channels
rgbwk.r = r;
rgbwk.g = g;
rgbwk.b = b;
rgbwk.w = m;
}
debug_d("HSVtoRGBraw R %i | G %i | B %i | W %i", rgbwk.r, rgbwk.g, rgbwk.b, rgbwk.w);
}
void RGBWWColorUtils::RGBtoHSV(const RGBWCT& rgbw, HSVCT& hsv) const {
debug_d("RGBWWColorUtils::RGBtoHSV");
//TODO: needs implementation
}
;
/*
* Helper function to create the 6 sectors for the HUE wheel
*/
void RGBWWColorUtils::createHueWheel() {
_HueWheelSector[0] = 0;
for (int i = 1; i <= 6; ++i) {
_HueWheelSector[i] = i * RGBWW_CALC_MAXVAL;
_HueWheelSectorWidth[i - 1] = RGBWW_CALC_MAXVAL;
}
}
void RGBWWColorUtils::circleHue(int& hue) {
while (hue >= RGBWW_CALC_HUEWHEELMAX)
hue -= RGBWW_CALC_HUEWHEELMAX;
while (hue < 0)
hue += RGBWW_CALC_HUEWHEELMAX;
}
/*
* Helper functions to parse hue,sat,val,colorcorrection
* Converts to the according pwm size (8bit/10bit)
*/
int RGBWWColorUtils::parseColorCorrection(float val) {
if (val >= 30.0)
val = 30.0;
if (val <= -30.0)
val = -30.0;
return int(((val / 60) * (RGBWW_CALC_MAXVAL)) * -1);
}