TLIGHT_PRODUCTS / WS281X

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PixelBuffer.cpp@29:a362df191524, 2016-09-07 (annotated)

Committer:
mutech
Date:
Wed Sep 07 22:21:27 2016 +0000
Revision:
29:a362df191524
Parent:
28:b452e097da53
Child:
32:64c391617f6c
WS2811/WS2812 support Library;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mutech 27:bc79f444883b 1 /* PixelBuffer.cpp
mutech 27:bc79f444883b 2 * mbed Microcontroller Library
mutech 27:bc79f444883b 3 * Copyright (c) 2016 muetch, t.kuroki
mutech 27:bc79f444883b 4 * Allrights reserved.
mutech 27:bc79f444883b 5 *
mutech 27:bc79f444883b 6 * Rev 0.97 2016-09-07
mutech 28:b452e097da53 7 * Rev 0.98 2016-09-08
mutech 27:bc79f444883b 8 */
mutech 27:bc79f444883b 9 #include "PixelBuffer.h"
mutech 27:bc79f444883b 10
mutech 27:bc79f444883b 11 //----------------------------------------------------------------------------
mutech 27:bc79f444883b 12 // 指定されたバッファの先頭からblock_size分をbuf_sizeが満杯になるまで繰り返しコピーする
mutech 27:bc79f444883b 13 template <class T>
mutech 27:bc79f444883b 14 static void repeat_buffer(T *buffer, int buf_size, int block_size = 1)
mutech 27:bc79f444883b 15 {
mutech 27:bc79f444883b 16 if (buffer && block_size > 0 && (uint16_t)block_size < buf_size)
mutech 27:bc79f444883b 17 {
mutech 27:bc79f444883b 18 T *dest = buffer + block_size;
mutech 27:bc79f444883b 19 int left = buf_size - block_size;
mutech 27:bc79f444883b 20 while (left > block_size)
mutech 27:bc79f444883b 21 {
mutech 27:bc79f444883b 22 memcpy(dest, buffer, block_size * sizeof(T));
mutech 27:bc79f444883b 23 dest += block_size;
mutech 27:bc79f444883b 24 left -= block_size;
mutech 27:bc79f444883b 25 block_size <<= 1; // 次回は２倍のサイズの転送
mutech 27:bc79f444883b 26 }
mutech 27:bc79f444883b 27 memcpy(dest, buffer, left * sizeof(T));
mutech 27:bc79f444883b 28 }
mutech 28:b452e097da53 29 }
mutech 27:bc79f444883b 30
mutech 27:bc79f444883b 31 //----------------------------------------------------------------------------
mutech 27:bc79f444883b 32 RGBPixels::RGBPixels(RGBColor *buffer, int maxPixels)
mutech 27:bc79f444883b 33 : _buf_owner(false)
mutech 27:bc79f444883b 34 {
mutech 27:bc79f444883b 35 _dummyPixel = 0;
mutech 27:bc79f444883b 36 setPixelBuffer(buffer, maxPixels);
mutech 27:bc79f444883b 37 }
mutech 27:bc79f444883b 38
mutech 27:bc79f444883b 39 RGBPixels::RGBPixels(int maxPixels)
mutech 27:bc79f444883b 40 : _buf_owner(false)
mutech 27:bc79f444883b 41 {
mutech 27:bc79f444883b 42 _dummyPixel = 0;
mutech 27:bc79f444883b 43 setPixelBuffer(nullptr, maxPixels);
mutech 27:bc79f444883b 44 }
mutech 27:bc79f444883b 45
mutech 27:bc79f444883b 46 RGBPixels::~RGBPixels()
mutech 27:bc79f444883b 47 {
mutech 27:bc79f444883b 48 if (_buf_owner && _pixels)
mutech 27:bc79f444883b 49 delete[] _pixels;
mutech 27:bc79f444883b 50 }
mutech 27:bc79f444883b 51
mutech 27:bc79f444883b 52 void RGBPixels::setPixelBuffer(RGBColor *buffer, int maxPixels)
mutech 27:bc79f444883b 53 {
mutech 27:bc79f444883b 54 if (_buf_owner && _pixels)
mutech 27:bc79f444883b 55 delete[] _pixels;
mutech 27:bc79f444883b 56
mutech 27:bc79f444883b 57 _buf_owner = false;
mutech 27:bc79f444883b 58 _pixels = buffer;
mutech 27:bc79f444883b 59
mutech 27:bc79f444883b 60 _maxPixels = (maxPixels < 0) ? 0 : (maxPixels > MAX_PIXELS) ? MAX_PIXELS : maxPixels;
mutech 27:bc79f444883b 61 if (!_pixels && _maxPixels > 0)
mutech 27:bc79f444883b 62 {
mutech 27:bc79f444883b 63 _pixels = new RGBColor[_maxPixels];
mutech 28:b452e097da53 64 _buf_owner = true;
mutech 27:bc79f444883b 65 }
mutech 27:bc79f444883b 66 _numPixels = _maxPixels;
mutech 27:bc79f444883b 67 clear();
mutech 27:bc79f444883b 68 }
mutech 27:bc79f444883b 69
mutech 27:bc79f444883b 70 int RGBPixels::numPixels(int value)
mutech 27:bc79f444883b 71 {
mutech 27:bc79f444883b 72 if (value >= 0)
mutech 27:bc79f444883b 73 _numPixels = (value > _maxPixels) ? _maxPixels : value;
mutech 27:bc79f444883b 74 return _numPixels;
mutech 27:bc79f444883b 75 }
mutech 27:bc79f444883b 76
mutech 27:bc79f444883b 77 // 指定位置のピクセルへ色配列を指定サイズ分をコピーする
mutech 27:bc79f444883b 78 void RGBPixels::setPixels(int index, RGBColor *color, int len)
mutech 27:bc79f444883b 79 {
mutech 27:bc79f444883b 80 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 27:bc79f444883b 81 {
mutech 27:bc79f444883b 82 if (index + len > _numPixels)
mutech 27:bc79f444883b 83 len = _numPixels - index;
mutech 27:bc79f444883b 84 memcpy(&_pixels[index], color, len * sizeof(_pixels[0]));
mutech 27:bc79f444883b 85 }
mutech 27:bc79f444883b 86 }
mutech 27:bc79f444883b 87
mutech 27:bc79f444883b 88 void RGBPixels::setPixels(int index, HSVColor *color, int len)
mutech 27:bc79f444883b 89 {
mutech 27:bc79f444883b 90 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 27:bc79f444883b 91 {
mutech 27:bc79f444883b 92 if (index + len > _numPixels)
mutech 27:bc79f444883b 93 len = _numPixels - index;
mutech 27:bc79f444883b 94 RGBColor *dest = &_pixels[index];
mutech 27:bc79f444883b 95 do
mutech 27:bc79f444883b 96 {
mutech 27:bc79f444883b 97 *dest++ = *color++;
mutech 27:bc79f444883b 98 } while (--len);
mutech 27:bc79f444883b 99 }
mutech 27:bc79f444883b 100 }
mutech 27:bc79f444883b 101
mutech 27:bc79f444883b 102 // 指定色を指定位置のピクセルから指定サイズ分書き込む
mutech 28:b452e097da53 103 void RGBPixels::fillPixels(int index, const RGBColor color, int len)
mutech 27:bc79f444883b 104 {
mutech 27:bc79f444883b 105 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 27:bc79f444883b 106 {
mutech 27:bc79f444883b 107 if (index + len > _numPixels)
mutech 27:bc79f444883b 108 len = _numPixels - index;
mutech 27:bc79f444883b 109 _pixels[index] = color;
mutech 27:bc79f444883b 110 repeat_buffer<RGBColor>(_pixels + index, len, 1);
mutech 27:bc79f444883b 111 }
mutech 27:bc79f444883b 112 }
mutech 27:bc79f444883b 113
mutech 28:b452e097da53 114 void RGBPixels::fillPixels(int index, const HSVColor color, int len)
mutech 27:bc79f444883b 115 {
mutech 29:a362df191524 116 fillPixels(index, RGBColor(color), len);
mutech 27:bc79f444883b 117 }
mutech 27:bc79f444883b 118
mutech 27:bc79f444883b 119 // 先頭から指定サイズ分のブロックをバッファの最後までコピーする
mutech 27:bc79f444883b 120 void RGBPixels::repeatPixels(int block_size)
mutech 27:bc79f444883b 121 {
mutech 27:bc79f444883b 122 if (_pixels && block_size > 0 && block_size < _numPixels)
mutech 27:bc79f444883b 123 {
mutech 27:bc79f444883b 124 repeat_buffer<RGBColor>(_pixels, _numPixels, block_size);
mutech 27:bc79f444883b 125 }
mutech 27:bc79f444883b 126 }
mutech 27:bc79f444883b 127
mutech 27:bc79f444883b 128 void RGBPixels::repeatPixels(RGBColor *source, int size)
mutech 27:bc79f444883b 129 {
mutech 27:bc79f444883b 130 if (_pixels && source && size > 0)
mutech 27:bc79f444883b 131 {
mutech 27:bc79f444883b 132 if (size > _numPixels)
mutech 27:bc79f444883b 133 size = _numPixels;
mutech 27:bc79f444883b 134 memcpy(_pixels, source, size * sizeof(_pixels[0]));
mutech 27:bc79f444883b 135 repeat_buffer<RGBColor>(_pixels, _numPixels, size);
mutech 27:bc79f444883b 136 }
mutech 27:bc79f444883b 137 }
mutech 27:bc79f444883b 138
mutech 27:bc79f444883b 139 void RGBPixels::repeatPixels(HSVColor *source, int size)
mutech 27:bc79f444883b 140 {
mutech 27:bc79f444883b 141 if (_pixels && source && size > 0)
mutech 27:bc79f444883b 142 {
mutech 27:bc79f444883b 143 if (size > _numPixels)
mutech 27:bc79f444883b 144 size = _numPixels;
mutech 27:bc79f444883b 145 for (int i = 0; i < size; ++i)
mutech 27:bc79f444883b 146 _pixels[i] = *source++;
mutech 27:bc79f444883b 147 repeat_buffer<RGBColor>(_pixels, _numPixels, size);
mutech 27:bc79f444883b 148 }
mutech 27:bc79f444883b 149 }
mutech 27:bc79f444883b 150
mutech 27:bc79f444883b 151 RGBPixels& RGBPixels::operator=(const RGBPixels& rhs)
mutech 27:bc79f444883b 152 {
mutech 27:bc79f444883b 153 if (!rhs._pixels || !rhs._maxPixels)
mutech 27:bc79f444883b 154 {
mutech 27:bc79f444883b 155 // 右辺が空の場合何もしない
mutech 27:bc79f444883b 156 return *this;
mutech 27:bc79f444883b 157 }
mutech 27:bc79f444883b 158 if (!_pixels || !_maxPixels)
mutech 27:bc79f444883b 159 {
mutech 27:bc79f444883b 160 // 自分のバッファなしの場合、、新規確保
mutech 27:bc79f444883b 161 setPixelBuffer(nullptr, rhs._maxPixels);
mutech 27:bc79f444883b 162 }
mutech 27:bc79f444883b 163
mutech 27:bc79f444883b 164 if (_pixels && _maxPixels)
mutech 27:bc79f444883b 165 {
mutech 27:bc79f444883b 166 _numPixels = rhs._numPixels;
mutech 27:bc79f444883b 167 if (_numPixels > rhs._maxPixels)
mutech 27:bc79f444883b 168 _numPixels = rhs._maxPixels;
mutech 27:bc79f444883b 169 if (_numPixels > _maxPixels)
mutech 27:bc79f444883b 170 _numPixels = _maxPixels;
mutech 27:bc79f444883b 171 memcpy(_pixels, rhs._pixels, sizeof(_pixels[0]) * _numPixels);
mutech 27:bc79f444883b 172 }
mutech 27:bc79f444883b 173
mutech 27:bc79f444883b 174 return *this;
mutech 27:bc79f444883b 175 }
mutech 27:bc79f444883b 176
mutech 27:bc79f444883b 177 //----------------------------------------------------------------------------
mutech 28:b452e097da53 178 void RGBPixels::makeGradation(int index, RGBColor from, RGBColor to, int len)
mutech 28:b452e097da53 179 {
mutech 28:b452e097da53 180 if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
mutech 28:b452e097da53 181 return;
mutech 28:b452e097da53 182
mutech 28:b452e097da53 183 int end = len;
mutech 28:b452e097da53 184 if (index + end > _numPixels)
mutech 28:b452e097da53 185 end = _numPixels - index;
mutech 28:b452e097da53 186
mutech 28:b452e097da53 187 RGBColor color;
mutech 28:b452e097da53 188 RGBColor *dest = _pixels;
mutech 28:b452e097da53 189 if (index > 0)
mutech 28:b452e097da53 190 dest += index;
mutech 28:b452e097da53 191 for (int i = (index < 0) ? -index : 0; i < end; ++i)
mutech 28:b452e097da53 192 {
mutech 28:b452e097da53 193 int j = len - i;
mutech 28:b452e097da53 194 color.red = ((from.red * j) + (to.red * i)) / len;
mutech 28:b452e097da53 195 color.green = ((from.green * j) + (to.green * i)) / len;
mutech 28:b452e097da53 196 color.blue = ((from.blue * j) + (to.blue * i)) / len;
mutech 28:b452e097da53 197 *dest++ = GammaColor(color);
mutech 28:b452e097da53 198 }
mutech 28:b452e097da53 199 }
mutech 28:b452e097da53 200
mutech 28:b452e097da53 201 void RGBPixels::makeRainbow(int index, HSVColor color, int len, int direction)
mutech 28:b452e097da53 202 {
mutech 28:b452e097da53 203 if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
mutech 28:b452e097da53 204 return;
mutech 28:b452e097da53 205
mutech 28:b452e097da53 206 int end = len;
mutech 28:b452e097da53 207 if (index + end > _numPixels)
mutech 28:b452e097da53 208 end = _numPixels - index;
mutech 28:b452e097da53 209
mutech 28:b452e097da53 210 HSVColor hsv(color);
mutech 28:b452e097da53 211 RGBColor *dest = _pixels;
mutech 28:b452e097da53 212 if (index > 0)
mutech 28:b452e097da53 213 dest += index;
mutech 28:b452e097da53 214 direction = (direction >= 0) ? -3600 : 3600;
mutech 28:b452e097da53 215 for (int i = (index < 0) ? -index : 0; i < end; ++i)
mutech 28:b452e097da53 216 {
mutech 28:b452e097da53 217 hsv.hue = color.hue + direction * i / len;
mutech 28:b452e097da53 218 *dest++ = GammaColor(hsv);
mutech 28:b452e097da53 219 }
mutech 28:b452e097da53 220 }
mutech 28:b452e097da53 221
mutech 28:b452e097da53 222 //----------------------------------------------------------------------------
mutech 27:bc79f444883b 223 //----------------------------------------------------------------------------
mutech 27:bc79f444883b 224 HSVPixels::HSVPixels(HSVColor *buffer, int maxPixels)
mutech 27:bc79f444883b 225 : _buf_owner(false)
mutech 27:bc79f444883b 226 {
mutech 27:bc79f444883b 227 _dummyPixel = 0;
mutech 27:bc79f444883b 228 setPixelBuffer(buffer, maxPixels);
mutech 27:bc79f444883b 229 }
mutech 27:bc79f444883b 230
mutech 27:bc79f444883b 231 HSVPixels::HSVPixels(int maxPixels)
mutech 27:bc79f444883b 232 : _buf_owner(false)
mutech 27:bc79f444883b 233 {
mutech 27:bc79f444883b 234 _dummyPixel = 0;
mutech 27:bc79f444883b 235 setPixelBuffer(nullptr, maxPixels);
mutech 27:bc79f444883b 236 }
mutech 27:bc79f444883b 237
mutech 27:bc79f444883b 238 HSVPixels::~HSVPixels()
mutech 27:bc79f444883b 239 {
mutech 27:bc79f444883b 240 if (_buf_owner && _pixels)
mutech 27:bc79f444883b 241 delete[] _pixels;
mutech 27:bc79f444883b 242 }
mutech 27:bc79f444883b 243
mutech 27:bc79f444883b 244 void HSVPixels::setPixelBuffer(HSVColor *buffer, int maxPixels)
mutech 27:bc79f444883b 245 {
mutech 27:bc79f444883b 246 if (_buf_owner && _pixels)
mutech 27:bc79f444883b 247 delete[] _pixels;
mutech 27:bc79f444883b 248
mutech 27:bc79f444883b 249 _buf_owner = false;
mutech 27:bc79f444883b 250 _pixels = buffer;
mutech 27:bc79f444883b 251
mutech 27:bc79f444883b 252 _maxPixels = (maxPixels < 0) ? 0 : (maxPixels > MAX_PIXELS) ? MAX_PIXELS : maxPixels;
mutech 27:bc79f444883b 253 if (!_pixels && _maxPixels > 0)
mutech 27:bc79f444883b 254 {
mutech 27:bc79f444883b 255 _pixels = new HSVColor[_maxPixels];
mutech 28:b452e097da53 256 _buf_owner = true;
mutech 27:bc79f444883b 257 }
mutech 27:bc79f444883b 258 _numPixels = _maxPixels;
mutech 27:bc79f444883b 259 clear();
mutech 27:bc79f444883b 260 }
mutech 27:bc79f444883b 261
mutech 27:bc79f444883b 262 int HSVPixels::numPixels(int value)
mutech 27:bc79f444883b 263 {
mutech 27:bc79f444883b 264 if (value >= 0)
mutech 27:bc79f444883b 265 _numPixels = (value > _maxPixels) ? _maxPixels : value;
mutech 27:bc79f444883b 266 return _numPixels;
mutech 27:bc79f444883b 267 }
mutech 27:bc79f444883b 268
mutech 27:bc79f444883b 269 // 指定位置のピクセルへ色配列を指定サイズ分をコピーする
mutech 27:bc79f444883b 270 void HSVPixels::setPixels(int index, HSVColor *color, int len)
mutech 27:bc79f444883b 271 {
mutech 27:bc79f444883b 272 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 27:bc79f444883b 273 {
mutech 27:bc79f444883b 274 if (index + len > _numPixels)
mutech 27:bc79f444883b 275 len = _numPixels - index;
mutech 27:bc79f444883b 276 memcpy(&_pixels[index], color, len * sizeof(_pixels[0]));
mutech 27:bc79f444883b 277 }
mutech 27:bc79f444883b 278 }
mutech 27:bc79f444883b 279
mutech 27:bc79f444883b 280 void HSVPixels::setPixels(int index, RGBColor *color, int len)
mutech 27:bc79f444883b 281 {
mutech 27:bc79f444883b 282 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 27:bc79f444883b 283 {
mutech 27:bc79f444883b 284 if (index + len > _numPixels)
mutech 27:bc79f444883b 285 len = _numPixels - index;
mutech 27:bc79f444883b 286 HSVColor *dest = &_pixels[index];
mutech 27:bc79f444883b 287 do
mutech 27:bc79f444883b 288 {
mutech 27:bc79f444883b 289 *dest++ = *color++;
mutech 27:bc79f444883b 290 } while (--len);
mutech 27:bc79f444883b 291 }
mutech 27:bc79f444883b 292 }
mutech 27:bc79f444883b 293
mutech 27:bc79f444883b 294 // 指定色を指定位置のピクセルから指定サイズ分書き込む
mutech 29:a362df191524 295 void HSVPixels::fillPixels(int index, const HSVColor color, int len)
mutech 27:bc79f444883b 296 {
mutech 27:bc79f444883b 297 if (_pixels && len > 0 && (uint16_t)index < _numPixels)
mutech 27:bc79f444883b 298 {
mutech 27:bc79f444883b 299 if (index + len > _numPixels)
mutech 27:bc79f444883b 300 len = _numPixels - index;
mutech 27:bc79f444883b 301 _pixels[index] = color;
mutech 27:bc79f444883b 302 repeat_buffer<HSVColor>(_pixels + index, len, 1);
mutech 27:bc79f444883b 303 }
mutech 27:bc79f444883b 304 }
mutech 27:bc79f444883b 305
mutech 29:a362df191524 306 void HSVPixels::fillPixels(int index, const RGBColor color, int len)
mutech 27:bc79f444883b 307 {
mutech 29:a362df191524 308 fillPixels(index, HSVColor(color), len);
mutech 27:bc79f444883b 309 }
mutech 27:bc79f444883b 310
mutech 27:bc79f444883b 311 // 先頭から指定サイズ分のブロックをバッファの最後までコピーする
mutech 27:bc79f444883b 312 void HSVPixels::repeatPixels(int block_size)
mutech 27:bc79f444883b 313 {
mutech 27:bc79f444883b 314 if (_pixels && block_size > 0 && block_size < _numPixels)
mutech 27:bc79f444883b 315 {
mutech 27:bc79f444883b 316 repeat_buffer<HSVColor>(_pixels, _numPixels, block_size);
mutech 27:bc79f444883b 317 }
mutech 27:bc79f444883b 318 }
mutech 27:bc79f444883b 319
mutech 27:bc79f444883b 320 void HSVPixels::repeatPixels(HSVColor *source, int size)
mutech 27:bc79f444883b 321 {
mutech 27:bc79f444883b 322 if (_pixels && source && size > 0)
mutech 27:bc79f444883b 323 {
mutech 27:bc79f444883b 324 if (size > _numPixels)
mutech 27:bc79f444883b 325 size = _numPixels;
mutech 27:bc79f444883b 326 memcpy(_pixels, source, size * sizeof(_pixels[0]));
mutech 27:bc79f444883b 327 repeat_buffer<HSVColor>(_pixels, _numPixels, size);
mutech 27:bc79f444883b 328 }
mutech 27:bc79f444883b 329 }
mutech 27:bc79f444883b 330
mutech 27:bc79f444883b 331 void HSVPixels::repeatPixels(RGBColor *source, int size)
mutech 27:bc79f444883b 332 {
mutech 27:bc79f444883b 333 if (_pixels && source && size > 0)
mutech 27:bc79f444883b 334 {
mutech 27:bc79f444883b 335 if (size > _numPixels)
mutech 27:bc79f444883b 336 size = _numPixels;
mutech 27:bc79f444883b 337 for (int i = 0; i < size; ++i)
mutech 27:bc79f444883b 338 _pixels[i] = *source++;
mutech 27:bc79f444883b 339 repeat_buffer<HSVColor>(_pixels, _numPixels, size);
mutech 27:bc79f444883b 340 }
mutech 27:bc79f444883b 341 }
mutech 27:bc79f444883b 342
mutech 27:bc79f444883b 343 HSVPixels& HSVPixels::operator=(const HSVPixels& rhs)
mutech 27:bc79f444883b 344 {
mutech 27:bc79f444883b 345 if (!rhs._pixels || !rhs._maxPixels)
mutech 27:bc79f444883b 346 {
mutech 27:bc79f444883b 347 // 右辺が空の場合何もしない
mutech 27:bc79f444883b 348 return *this;
mutech 27:bc79f444883b 349 }
mutech 27:bc79f444883b 350 if (!_pixels || !_maxPixels)
mutech 27:bc79f444883b 351 {
mutech 27:bc79f444883b 352 // 自分のバッファなしの場合、、新規確保
mutech 27:bc79f444883b 353 setPixelBuffer(nullptr, rhs._maxPixels);
mutech 27:bc79f444883b 354 }
mutech 27:bc79f444883b 355
mutech 27:bc79f444883b 356 if (_pixels && _maxPixels)
mutech 27:bc79f444883b 357 {
mutech 27:bc79f444883b 358 _numPixels = rhs._numPixels;
mutech 27:bc79f444883b 359 if (_numPixels > rhs._maxPixels)
mutech 27:bc79f444883b 360 _numPixels = rhs._maxPixels;
mutech 27:bc79f444883b 361 if (_numPixels > _maxPixels)
mutech 27:bc79f444883b 362 _numPixels = _maxPixels;
mutech 27:bc79f444883b 363 memcpy(_pixels, rhs._pixels, sizeof(_pixels[0]) * _numPixels);
mutech 27:bc79f444883b 364 }
mutech 27:bc79f444883b 365
mutech 27:bc79f444883b 366 return *this;
mutech 27:bc79f444883b 367 }
mutech 27:bc79f444883b 368
mutech 27:bc79f444883b 369 //----------------------------------------------------------------------------
mutech 28:b452e097da53 370 void HSVPixels::makeGradation(int index, HSVColor from, HSVColor to, int len)
mutech 28:b452e097da53 371 {
mutech 28:b452e097da53 372 if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
mutech 28:b452e097da53 373 return;
mutech 28:b452e097da53 374
mutech 28:b452e097da53 375 int end = len;
mutech 28:b452e097da53 376 if (index + end > _numPixels)
mutech 28:b452e097da53 377 end = _numPixels - index;
mutech 28:b452e097da53 378
mutech 28:b452e097da53 379 RGBColor rgb_from(from);
mutech 28:b452e097da53 380 RGBColor rgb_to(to);
mutech 28:b452e097da53 381 RGBColor color;
mutech 28:b452e097da53 382 HSVColor *dest = _pixels;
mutech 28:b452e097da53 383 if (index > 0)
mutech 28:b452e097da53 384 dest += index;
mutech 28:b452e097da53 385 for (int i = (index < 0) ? -index : 0; i < end; ++i)
mutech 28:b452e097da53 386 {
mutech 28:b452e097da53 387 int j = len - i;
mutech 28:b452e097da53 388 color.red = ((rgb_from.red * j) + (rgb_to.red * i)) / len;
mutech 28:b452e097da53 389 color.green = ((rgb_from.green * j) + (rgb_to.green * i)) / len;
mutech 28:b452e097da53 390 color.blue = ((rgb_from.blue * j) + (rgb_to.blue * i)) / len;
mutech 28:b452e097da53 391 *dest++ = GammaColor(color);
mutech 28:b452e097da53 392 }
mutech 28:b452e097da53 393 }
mutech 28:b452e097da53 394
mutech 28:b452e097da53 395 void HSVPixels::makeRainbow(int index, HSVColor color, int len, int direction)
mutech 28:b452e097da53 396 {
mutech 28:b452e097da53 397 if (!_pixels || len < 1 || index >= _numPixels || (index + len) < 0)
mutech 28:b452e097da53 398 return;
mutech 28:b452e097da53 399
mutech 28:b452e097da53 400 int end = len;
mutech 28:b452e097da53 401 if (index + end > _numPixels)
mutech 28:b452e097da53 402 end = _numPixels - index;
mutech 28:b452e097da53 403
mutech 28:b452e097da53 404 HSVColor hsv(color);
mutech 28:b452e097da53 405 HSVColor *dest = _pixels;
mutech 28:b452e097da53 406 if (index > 0)
mutech 28:b452e097da53 407 dest += index;
mutech 28:b452e097da53 408 direction = (direction >= 0) ? -3600 : 3600;
mutech 28:b452e097da53 409 for (int i = (index < 0) ? -index : 0; i < end; ++i)
mutech 28:b452e097da53 410 {
mutech 28:b452e097da53 411 hsv.hue = color.hue + direction * i / len;
mutech 29:a362df191524 412 *dest++ = GammaColor(hsv);
mutech 28:b452e097da53 413 }
mutech 28:b452e097da53 414 }
mutech 28:b452e097da53 415
mutech 28:b452e097da53 416 //----------------------------------------------------------------------------