apps/plugins/cube.c

   1 /***************************************************************************
   2 *             __________               __   ___.
   3 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 *                     \/            \/     \/    \/            \/
   8 * $Id$
   9 *
  10 * Copyright (C) 2002 Damien Teney
  11 * modified to use int instead of float math by Andreas Zwirtes
  12 * heavily extended by Jens Arnold
  13 *
  14 * All files in this archive are subject to the GNU General Public License.
  15 * See the file COPYING in the source tree root for full license agreement.
  16 *
  17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18 * KIND, either express or implied.
  19 *
  20 ***************************************************************************/
  21 #include "plugin.h"
  22 #include "grey.h"
  23 #include "playergfx.h"
  24 #include "xlcd.h"
  25 #include "fixedpoint.h"
  26
  27 PLUGIN_HEADER
  28
  29 /* Loops that the values are displayed */
  30 #define DISP_TIME 30
  31
  32 /* variable button definitions */
  33 #if CONFIG_KEYPAD == RECORDER_PAD
  34 #define CUBE_QUIT          BUTTON_OFF
  35 #define CUBE_X_INC         BUTTON_RIGHT
  36 #define CUBE_X_DEC         BUTTON_LEFT
  37 #define CUBE_Y_INC         BUTTON_UP
  38 #define CUBE_Y_DEC         BUTTON_DOWN
  39 #define CUBE_Z_INC         BUTTON_F2
  40 #define CUBE_Z_DEC         BUTTON_F1
  41 #define CUBE_MODE          BUTTON_F3
  42 #define CUBE_PAUSE         BUTTON_PLAY
  43 #define CUBE_HIGHSPEED     BUTTON_ON
  44
  45 #elif CONFIG_KEYPAD == ARCHOS_AV300_PAD
  46 #define CUBE_QUIT          BUTTON_OFF
  47 #define CUBE_X_INC         BUTTON_RIGHT
  48 #define CUBE_X_DEC         BUTTON_LEFT
  49 #define CUBE_Y_INC         BUTTON_UP
  50 #define CUBE_Y_DEC         BUTTON_DOWN
  51 #define CUBE_Z_INC         BUTTON_F2
  52 #define CUBE_Z_DEC         BUTTON_F1
  53 #define CUBE_MODE          BUTTON_F3
  54 #define CUBE_PAUSE         BUTTON_SELECT
  55 #define CUBE_HIGHSPEED     BUTTON_ON
  56
  57 #elif CONFIG_KEYPAD == PLAYER_PAD
  58 #define CUBE_QUIT          BUTTON_STOP
  59 #define CUBE_X_INC         BUTTON_RIGHT
  60 #define CUBE_X_DEC         BUTTON_LEFT
  61 #define CUBE_Y_INC         (BUTTON_ON | BUTTON_RIGHT)
  62 #define CUBE_Y_DEC         (BUTTON_ON | BUTTON_LEFT)
  63 #define CUBE_Z_INC         (BUTTON_MENU | BUTTON_RIGHT)
  64 #define CUBE_Z_DEC         (BUTTON_MENU | BUTTON_LEFT)
  65 #define CUBE_MODE_PRE      BUTTON_MENU
  66 #define CUBE_MODE          (BUTTON_MENU | BUTTON_REL)
  67 #define CUBE_PAUSE         BUTTON_PLAY
  68 #define CUBE_HIGHSPEED_PRE BUTTON_ON
  69 #define CUBE_HIGHSPEED     (BUTTON_ON | BUTTON_REL)
  70
  71 #elif CONFIG_KEYPAD == ONDIO_PAD
  72 #define CUBE_QUIT          BUTTON_OFF
  73 #define CUBE_X_INC         BUTTON_RIGHT
  74 #define CUBE_X_DEC         BUTTON_LEFT
  75 #define CUBE_Y_INC         BUTTON_UP
  76 #define CUBE_Y_DEC         BUTTON_DOWN
  77 #define CUBE_Z_INC         (BUTTON_MENU | BUTTON_UP)
  78 #define CUBE_Z_DEC         (BUTTON_MENU | BUTTON_DOWN)
  79 #define CUBE_MODE_PRE      BUTTON_MENU
  80 #define CUBE_MODE          (BUTTON_MENU | BUTTON_REL)
  81 #define CUBE_PAUSE         (BUTTON_MENU | BUTTON_LEFT)
  82 #define CUBE_HIGHSPEED     (BUTTON_MENU | BUTTON_RIGHT)
  83
  84 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
  85       (CONFIG_KEYPAD == IRIVER_H300_PAD)
  86 #define CUBE_QUIT          BUTTON_OFF
  87 #define CUBE_X_INC         BUTTON_RIGHT
  88 #define CUBE_X_DEC         BUTTON_LEFT
  89 #define CUBE_Y_INC         BUTTON_UP
  90 #define CUBE_Y_DEC         BUTTON_DOWN
  91 #define CUBE_Z_INC         (BUTTON_ON | BUTTON_UP)
  92 #define CUBE_Z_DEC         (BUTTON_ON | BUTTON_DOWN)
  93 #define CUBE_MODE          BUTTON_MODE
  94 #define CUBE_PAUSE_PRE     BUTTON_ON
  95 #define CUBE_PAUSE         (BUTTON_ON | BUTTON_REL)
  96 #define CUBE_HIGHSPEED     BUTTON_SELECT
  97
  98 #define CUBE_RC_QUIT       BUTTON_RC_STOP
  99
 100 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
 101       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
 102       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
 103 #define CUBE_QUIT          BUTTON_MENU
 104 #define CUBE_X_INC         BUTTON_RIGHT
 105 #define CUBE_X_DEC         BUTTON_LEFT
 106 #define CUBE_Y_INC         BUTTON_SCROLL_FWD
 107 #define CUBE_Y_DEC         BUTTON_SCROLL_BACK
 108 #define CUBE_Z_INC         (BUTTON_SELECT | BUTTON_RIGHT)
 109 #define CUBE_Z_DEC         (BUTTON_SELECT | BUTTON_LEFT)
 110 #define CUBE_MODE          (BUTTON_SELECT | BUTTON_MENU)
 111 #define CUBE_PAUSE_PRE     BUTTON_PLAY
 112 #define CUBE_PAUSE         (BUTTON_PLAY | BUTTON_REL)
 113 #define CUBE_HIGHSPEED     (BUTTON_SELECT | BUTTON_PLAY)
 114
 115 #elif CONFIG_KEYPAD == IRIVER_IFP7XX_PAD
 116 #define CUBE_QUIT          BUTTON_PLAY
 117 #define CUBE_X_INC         BUTTON_RIGHT
 118 #define CUBE_X_DEC         BUTTON_LEFT
 119 #define CUBE_Y_INC         BUTTON_UP
 120 #define CUBE_Y_DEC         BUTTON_DOWN
 121 #define CUBE_Z_INC         BUTTON_MODE
 122 #define CUBE_Z_DEC         BUTTON_EQ
 123 #define CUBE_MODE          (BUTTON_SELECT | BUTTON_REPEAT)
 124 #define CUBE_PAUSE         (BUTTON_SELECT | BUTTON_REL)
 125 #define CUBE_HIGHSPEED     (BUTTON_MODE | BUTTON_EQ) /* TODO: this is impossible */
 126
 127 #elif (CONFIG_KEYPAD == IAUDIO_X5M5_PAD)
 128 #define CUBE_QUIT          BUTTON_POWER
 129 #define CUBE_X_INC         BUTTON_LEFT
 130 #define CUBE_X_DEC         BUTTON_RIGHT
 131 #define CUBE_Y_INC         BUTTON_UP
 132 #define CUBE_Y_DEC         BUTTON_DOWN
 133 #define CUBE_Z_INC         (BUTTON_PLAY | BUTTON_UP)
 134 #define CUBE_Z_DEC         (BUTTON_PLAY | BUTTON_DOWN)
 135 #define CUBE_MODE          BUTTON_SELECT
 136 #define CUBE_PAUSE_PRE     BUTTON_PLAY
 137 #define CUBE_PAUSE         (BUTTON_PLAY | BUTTON_REL)
 138 #define CUBE_HIGHSPEED     (BUTTON_REC | BUTTON_REL)
 139
 140 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
 141 #define CUBE_QUIT          BUTTON_POWER
 142 #define CUBE_X_INC         BUTTON_LEFT
 143 #define CUBE_X_DEC         BUTTON_RIGHT
 144 #define CUBE_Y_INC         BUTTON_UP
 145 #define CUBE_Y_DEC         BUTTON_DOWN
 146 #define CUBE_Z_INC         BUTTON_VOL_UP
 147 #define CUBE_Z_DEC         BUTTON_VOL_DOWN
 148 #define CUBE_MODE          BUTTON_MENU
 149 #define CUBE_PAUSE         BUTTON_SELECT
 150 #define CUBE_HIGHSPEED     BUTTON_A
 151
 152 #elif (CONFIG_KEYPAD == SANSA_E200_PAD)
 153 #define CUBE_QUIT          BUTTON_POWER
 154 #define CUBE_X_INC         BUTTON_LEFT
 155 #define CUBE_X_DEC         BUTTON_RIGHT
 156 #define CUBE_Y_INC         BUTTON_SCROLL_FWD
 157 #define CUBE_Y_DEC         BUTTON_SCROLL_BACK
 158 #define CUBE_Z_INC         BUTTON_UP
 159 #define CUBE_Z_DEC         BUTTON_DOWN
 160 #define CUBE_MODE_PRE      BUTTON_SELECT
 161 #define CUBE_MODE          (BUTTON_SELECT|BUTTON_REPEAT)
 162 #define CUBE_PAUSE_PRE     BUTTON_SELECT
 163 #define CUBE_PAUSE         (BUTTON_SELECT|BUTTON_REL)
 164 #define CUBE_HIGHSPEED     BUTTON_REC
 165
 166 #elif (CONFIG_KEYPAD == SANSA_C200_PAD)
 167 #define CUBE_QUIT          BUTTON_POWER
 168 #define CUBE_X_INC         BUTTON_LEFT
 169 #define CUBE_X_DEC         BUTTON_RIGHT
 170 #define CUBE_Y_INC         BUTTON_VOL_UP
 171 #define CUBE_Y_DEC         BUTTON_VOL_DOWN
 172 #define CUBE_Z_INC         BUTTON_UP
 173 #define CUBE_Z_DEC         BUTTON_DOWN
 174 #define CUBE_MODE_PRE      BUTTON_SELECT
 175 #define CUBE_MODE          (BUTTON_SELECT|BUTTON_REPEAT)
 176 #define CUBE_PAUSE_PRE     BUTTON_SELECT
 177 #define CUBE_PAUSE         (BUTTON_SELECT|BUTTON_REL)
 178 #define CUBE_HIGHSPEED     BUTTON_REC
 179
 180
 181 #elif (CONFIG_KEYPAD == IRIVER_H10_PAD)
 182 #define CUBE_QUIT          BUTTON_POWER
 183 #define CUBE_X_INC         BUTTON_LEFT
 184 #define CUBE_X_DEC         BUTTON_RIGHT
 185 #define CUBE_Y_INC         BUTTON_SCROLL_UP
 186 #define CUBE_Y_DEC         BUTTON_SCROLL_DOWN
 187 #define CUBE_Z_INC         (BUTTON_PLAY | BUTTON_SCROLL_UP)
 188 #define CUBE_Z_DEC         (BUTTON_PLAY | BUTTON_SCROLL_DOWN)
 189 #define CUBE_MODE          BUTTON_REW
 190 #define CUBE_PAUSE_PRE     BUTTON_PLAY
 191 #define CUBE_PAUSE         (BUTTON_PLAY | BUTTON_REL)
 192 #define CUBE_HIGHSPEED     (BUTTON_FF | BUTTON_REL)
 193
 194 #elif CONFIG_KEYPAD == MROBE500_PAD
 195 #define CUBE_QUIT          BUTTON_POWER
 196 #define CUBE_X_INC         BUTTON_LEFT
 197 #define CUBE_X_DEC         BUTTON_RIGHT
 198 #define CUBE_Y_INC         BUTTON_RC_PLAY
 199 #define CUBE_Y_DEC         BUTTON_RC_DOWN
 200 #define CUBE_Z_INC         BUTTON_RC_VOL_UP
 201 #define CUBE_Z_DEC         BUTTON_RC_VOL_DOWN
 202 #define CUBE_MODE          BUTTON_RC_MODE
 203 #define CUBE_PAUSE_PRE     BUTTON_RC_HEART
 204 #define CUBE_PAUSE         (BUTTON_RC_HEART | BUTTON_REL)
 205 #define CUBE_HIGHSPEED     BUTTON_RC_HEART
 206
 207 #elif CONFIG_KEYPAD == GIGABEAT_S_PAD
 208 #define CUBE_QUIT          BUTTON_BACK
 209 #define CUBE_X_INC         BUTTON_LEFT
 210 #define CUBE_X_DEC         BUTTON_RIGHT
 211 #define CUBE_Y_INC         BUTTON_UP
 212 #define CUBE_Y_DEC         BUTTON_DOWN
 213 #define CUBE_Z_INC         BUTTON_VOL_UP
 214 #define CUBE_Z_DEC         BUTTON_VOL_DOWN
 215 #define CUBE_MODE          BUTTON_PREV
 216 #define CUBE_PAUSE_PRE     BUTTON_PLAY
 217 #define CUBE_PAUSE         (BUTTON_PLAY | BUTTON_REL)
 218 #define CUBE_HIGHSPEED     (BUTTON_NEXT | BUTTON_REL)
 219
 220 #endif
 221
 222 #ifdef HAVE_LCD_BITMAP
 223
 224 #define DIST (10 * MIN(LCD_HEIGHT, LCD_WIDTH) / 16)
 225 static int x_off = LCD_WIDTH/2;
 226 static int y_off = LCD_HEIGHT/2;
 227
 228 #if LCD_DEPTH == 1
 229 #define USE_GSLIB
 230 GREY_INFO_STRUCT
 231 struct my_lcd {
 232     void (*update)(void);
 233     void (*clear_display)(void);
 234     void (*drawline)(int x1, int y1, int x2, int y2);
 235     void (*putsxy)(int x, int y, const unsigned char *string);
 236 };
 237
 238 static struct my_lcd greyfuncs = {
 239     grey_update, grey_clear_display, grey_drawline, grey_putsxy
 240 };
 241 static struct my_lcd lcdfuncs; /* initialised at runtime */
 242 static struct my_lcd *mylcd = &greyfuncs;
 243
 244 #define MYLCD(fn) mylcd->fn
 245 #define MY_FILLTRIANGLE(x1, y1, x2, y2, x3, y3) grey_filltriangle(x1, y1, x2, y2, x3, y3)
 246 #define MY_SET_FOREGROUND(fg) grey_set_foreground(fg)
 247 #define MY_GET_FOREGROUND() grey_get_foreground()
 248
 249 #else
 250 #define MYLCD(fn) rb->lcd_ ## fn
 251 #define MY_FILLTRIANGLE(x1, y1, x2, y2, x3, y3) xlcd_filltriangle(x1, y1, x2, y2, x3, y3)
 252 #define MY_SET_FOREGROUND(fg) rb->lcd_set_foreground(fg)
 253 #define MY_GET_FOREGROUND() rb->lcd_get_foreground()
 254 #endif
 255
 256 #if CONFIG_LCD == LCD_SSD1815
 257 #define ASPECT 320 /* = 1.25 (fixed point 24.8) */
 258 #else
 259 #define ASPECT 256 /* = 1.00 */
 260 #endif
 261
 262 #else /* !LCD_BITMAP */
 263
 264 #define MYLCD(fn) pgfx_ ## fn
 265 #define DIST 9
 266 static int x_off = 10;
 267 static int y_off = 7;
 268 #define ASPECT 300 /* = 1.175 */
 269
 270 #endif /* !LCD_BITMAP */
 271
 272 struct point_3D {
 273     long x, y, z;
 274 };
 275
 276 struct point_2D {
 277     long x, y;
 278 };
 279
 280 struct line {
 281     int start, end;
 282 };
 283
 284 struct face {
 285     int corner[4];
 286     int line[4];
 287 };
 288
 289 /* initial, unrotated cube corners */
 290 static const struct point_3D sommet[8] =
 291 {
 292     {-DIST, -DIST, -DIST},
 293     { DIST, -DIST, -DIST},
 294     { DIST,  DIST, -DIST},
 295     {-DIST,  DIST, -DIST},
 296     {-DIST, -DIST,  DIST},
 297     { DIST, -DIST,  DIST},
 298     { DIST,  DIST,  DIST},
 299     {-DIST,  DIST,  DIST}
 300 };
 301
 302 /* The 12 lines forming the edges */
 303 static const struct line lines[12] =
 304 {
 305     {0, 1}, {1, 2}, {2, 3}, {3, 0},
 306     {4, 7}, {7, 6}, {6, 5}, {5, 4},
 307     {0, 4}, {1, 5}, {2, 6}, {3, 7}
 308 };
 309
 310 static bool lines_drawn[12];
 311
 312 /* The 6 faces of the cube; points are in clockwise order when viewed
 313    from the outside */
 314 static const struct face faces[6] =
 315 {
 316     {{0, 1, 2, 3}, {0, 1, 2, 3}},
 317     {{4, 7, 6, 5}, {4, 5, 6, 7}},
 318     {{0, 4, 5, 1}, {8, 7, 9, 0}},
 319     {{2, 6, 7, 3}, {10, 5, 11, 2}},
 320     {{0, 3, 7, 4}, {3, 11, 4, 8}},
 321     {{1, 5, 6, 2}, {9, 6, 10, 1}}
 322 };
 323
 324 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 325 static const unsigned face_colors[6] =
 326 {
 327 #ifdef HAVE_LCD_COLOR
 328     LCD_RGBPACK(255, 0, 0), LCD_RGBPACK(255, 0, 0), LCD_RGBPACK(0, 255, 0),
 329     LCD_RGBPACK(0, 255, 0), LCD_RGBPACK(0, 0, 255), LCD_RGBPACK(0, 0, 255)
 330 #elif defined(USE_GSLIB)
 331     GREY_LIGHTGRAY, GREY_LIGHTGRAY, GREY_DARKGRAY,
 332     GREY_DARKGRAY,  GREY_BLACK,     GREY_BLACK
 333 #else
 334     LCD_LIGHTGRAY, LCD_LIGHTGRAY, LCD_DARKGRAY,
 335     LCD_DARKGRAY,  LCD_BLACK,     LCD_BLACK
 336 #endif
 337 };
 338 #endif
 339
 340 enum {
 341 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 342     SOLID,
 343 #endif
 344     HIDDEN_LINES,
 345     WIREFRAME,
 346     NUM_MODES
 347 };
 348
 349 static int mode = 0;
 350
 351 static struct point_3D point3D[8];
 352 static struct point_2D point2D[8];
 353 static long matrice[3][3];
 354
 355 static const int nb_points = 8;
 356 static long z_off = 600;
 357
 358 static struct plugin_api* rb;
 359
 360 static void cube_rotate(int xa, int ya, int za)
 361 {
 362     int i;
 363     /* Just to prevent unnecessary lookups */
 364     long sxa, cxa, sya, cya, sza, cza;
 365
 366     sxa = sin_int(xa);
 367     cxa = cos_int(xa);
 368     sya = sin_int(ya);
 369     cya = cos_int(ya);
 370     sza = sin_int(za);
 371     cza = cos_int(za);
 372
 373     /* calculate overall translation matrix */
 374     matrice[0][0] = (cza * cya) >> 14;
 375     matrice[1][0] = (sza * cya) >> 14;
 376     matrice[2][0] = -sya;
 377
 378     matrice[0][1] = (((cza * sya) >> 14) * sxa - sza * cxa) >> 14;
 379     matrice[1][1] = (((sza * sya) >> 14) * sxa + cxa * cza) >> 14;
 380     matrice[2][1] = (sxa * cya) >> 14;
 381
 382     matrice[0][2] = (((cza * sya) >> 14) * cxa + sza * sxa) >> 14;
 383     matrice[1][2] = (((sza * sya) >> 14) * cxa - cza * sxa) >> 14;
 384     matrice[2][2] = (cxa * cya) >> 14;
 385
 386     /* apply translation matrix to all points */
 387     for (i = 0; i < nb_points; i++)
 388     {
 389         point3D[i].x = matrice[0][0] * sommet[i].x + matrice[1][0] * sommet[i].y
 390                      + matrice[2][0] * sommet[i].z;
 391
 392         point3D[i].y = matrice[0][1] * sommet[i].x + matrice[1][1] * sommet[i].y
 393                      + matrice[2][1] * sommet[i].z;
 394
 395         point3D[i].z = matrice[0][2] * sommet[i].x + matrice[1][2] * sommet[i].y
 396                      + matrice[2][2] * sommet[i].z;
 397     }
 398 }
 399
 400 static void cube_viewport(void)
 401 {
 402     int i;
 403
 404     /* Do viewport transformation for all points */
 405     for (i = 0; i < nb_points; i++)
 406     {
 407 #if ASPECT != 256
 408         point2D[i].x = (point3D[i].x * ASPECT) / (point3D[i].z + (z_off << 14))
 409                      + x_off;
 410 #else
 411         point2D[i].x = (point3D[i].x << 8) / (point3D[i].z + (z_off << 14))
 412                      + x_off;
 413 #endif
 414         point2D[i].y = (point3D[i].y << 8) / (point3D[i].z + (z_off << 14))
 415                      + y_off;
 416     }
 417 }
 418
 419 static void cube_draw(void)
 420 {
 421     int i, j, line;
 422 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 423     unsigned old_foreground;
 424 #endif
 425
 426     switch (mode)
 427     {
 428 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 429       case SOLID:
 430
 431         old_foreground = MY_GET_FOREGROUND();
 432         for (i = 0; i < 6; i++)
 433         {
 434             /* backface culling; if the shape winds counter-clockwise, we are
 435              * looking at the backface, and the (simplified) cross product
 436              * is < 0. Do not draw it. */
 437             if (0 >= (point2D[faces[i].corner[1]].x - point2D[faces[i].corner[0]].x)
 438                    * (point2D[faces[i].corner[2]].y - point2D[faces[i].corner[1]].y)
 439                    - (point2D[faces[i].corner[1]].y - point2D[faces[i].corner[0]].y)
 440                    * (point2D[faces[i].corner[2]].x - point2D[faces[i].corner[1]].x))
 441                 continue;
 442
 443             MY_SET_FOREGROUND(face_colors[i]);
 444             MY_FILLTRIANGLE(point2D[faces[i].corner[0]].x,
 445                             point2D[faces[i].corner[0]].y,
 446                             point2D[faces[i].corner[1]].x,
 447                             point2D[faces[i].corner[1]].y,
 448                             point2D[faces[i].corner[2]].x,
 449                             point2D[faces[i].corner[2]].y);
 450             MY_FILLTRIANGLE(point2D[faces[i].corner[0]].x,
 451                             point2D[faces[i].corner[0]].y,
 452                             point2D[faces[i].corner[2]].x,
 453                             point2D[faces[i].corner[2]].y,
 454                             point2D[faces[i].corner[3]].x,
 455                             point2D[faces[i].corner[3]].y);
 456
 457         }
 458         MY_SET_FOREGROUND(old_foreground);
 459         break;
 460 #endif /* (LCD_DEPTH > 1) || GSLIB */
 461
 462       case HIDDEN_LINES:
 463
 464         rb->memset(lines_drawn, 0, sizeof(lines_drawn));
 465         for (i = 0; i < 6; i++)
 466         {
 467             /* backface culling; if the shape winds counter-clockwise, we are
 468              * looking at the backface, and the (simplified) cross product
 469              * is < 0. Do not draw it. */
 470             if (0 >= (point2D[faces[i].corner[1]].x - point2D[faces[i].corner[0]].x)
 471                    * (point2D[faces[i].corner[2]].y - point2D[faces[i].corner[1]].y)
 472                    - (point2D[faces[i].corner[1]].y - point2D[faces[i].corner[0]].y)
 473                    * (point2D[faces[i].corner[2]].x - point2D[faces[i].corner[1]].x))
 474                 continue;
 475
 476             for (j = 0; j < 4; j++)
 477             {
 478                 line = faces[i].line[j];
 479                 if (!lines_drawn[line])
 480                 {
 481                     lines_drawn[line] = true;
 482                     MYLCD(drawline)(point2D[lines[line].start].x,
 483                                     point2D[lines[line].start].y,
 484                                     point2D[lines[line].end].x,
 485                                     point2D[lines[line].end].y);
 486                 }
 487             }
 488         }
 489         break;
 490
 491       case WIREFRAME:
 492
 493         for (i = 0; i < 12; i++)
 494             MYLCD(drawline)(point2D[lines[i].start].x,
 495                             point2D[lines[i].start].y,
 496                             point2D[lines[i].end].x,
 497                             point2D[lines[i].end].y);
 498         break;
 499     }
 500 }
 501
 502 void cleanup(void *parameter)
 503 {
 504     (void)parameter;
 505
 506 #ifdef USE_GSLIB
 507     grey_release();
 508 #elif defined HAVE_LCD_CHARCELLS
 509     pgfx_release();
 510 #endif
 511 }
 512
 513 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
 514 {
 515     char buffer[30];
 516     int t_disp = 0;
 517 #ifdef USE_GSLIB
 518     unsigned char *gbuf;
 519     size_t gbuf_size = 0;
 520     bool mode_switch = true;
 521 #endif
 522
 523     int button;
 524     int lastbutton = BUTTON_NONE;
 525     int xa = 0;
 526     int ya = 0;
 527     int za = 0;
 528     int xs = 1;
 529     int ys = 3;
 530     int zs = 1;
 531     bool highspeed = false;
 532     bool paused = false;
 533     bool redraw = true;
 534     bool exit = false;
 535
 536     (void)(parameter);
 537     rb = api;
 538
 539 #ifdef HAVE_LCD_BITMAP
 540 #if LCD_DEPTH > 1
 541     xlcd_init(rb);
 542 #elif defined(USE_GSLIB)
 543     gbuf = (unsigned char *)rb->plugin_get_buffer(&gbuf_size);
 544     if (!grey_init(rb, gbuf, gbuf_size, true, LCD_WIDTH, LCD_HEIGHT, NULL))
 545     {
 546         rb->splash(HZ, "Couldn't init greyscale display");
 547         return PLUGIN_ERROR;
 548     }
 549     /* init lcd_ function pointers */
 550     lcdfuncs.update =        rb->lcd_update;
 551     lcdfuncs.clear_display = rb->lcd_clear_display;
 552     lcdfuncs.drawline =      rb->lcd_drawline;
 553     lcdfuncs.putsxy =        rb->lcd_putsxy;
 554
 555     grey_setfont(FONT_SYSFIXED);
 556 #endif
 557     rb->lcd_setfont(FONT_SYSFIXED);
 558 #else /* LCD_CHARCELLS */
 559     if (!pgfx_init(rb, 4, 2))
 560     {
 561         rb->splash(HZ*2, "Old LCD :(");
 562         return PLUGIN_OK;
 563     }
 564     pgfx_display(3, 0);
 565 #endif
 566
 567     while(!exit)
 568     {
 569         if (highspeed)
 570             rb->yield();
 571         else
 572             rb->sleep(4);
 573
 574         if (redraw)
 575         {
 576             MYLCD(clear_display)();
 577             cube_rotate(xa, ya, za);
 578             cube_viewport();
 579             cube_draw();
 580             redraw = false;
 581         }
 582
 583 #ifdef HAVE_LCD_BITMAP
 584         if (t_disp > 0)
 585         {
 586             t_disp--;
 587             rb->snprintf(buffer, sizeof(buffer), "x:%d y:%d z:%d h:%d",
 588                          xs, ys, zs, highspeed);
 589             MYLCD(putsxy)(0, LCD_HEIGHT-8, buffer);
 590             if (t_disp == 0)
 591                 redraw = true;
 592         }
 593 #else
 594         if (t_disp > 0)
 595         {
 596             if (t_disp == DISP_TIME)
 597             {
 598                 rb->snprintf(buffer, sizeof(buffer), "x%d", xs);
 599                 rb->lcd_puts(0, 0, buffer);
 600                 rb->snprintf(buffer, sizeof(buffer), "y%d", ys);
 601                 rb->lcd_puts(0, 1, buffer);
 602                 pgfx_display(3, 0);
 603                 rb->snprintf(buffer, sizeof(buffer), "z%d", zs);
 604                 rb->lcd_puts(8, 0, buffer);
 605                 rb->snprintf(buffer, sizeof(buffer), "h%d", highspeed);
 606                 rb->lcd_puts(8, 1, buffer);
 607             }
 608             t_disp--;
 609             if (t_disp == 0)
 610             {
 611                 rb->lcd_clear_display();
 612                 pgfx_display(3, 0);
 613             }
 614         }
 615 #endif
 616 #ifdef USE_GSLIB
 617         if (mode_switch)
 618         {
 619             grey_show(mode == SOLID);
 620             mode_switch = false;
 621         }
 622 #endif
 623         MYLCD(update)();
 624
 625         if (!paused)
 626         {
 627             xa += xs;
 628             if (xa > 359)
 629                 xa -= 360;
 630             else if (xa < 0)
 631                 xa += 360;
 632
 633             ya += ys;
 634             if (ya > 359)
 635                 ya -= 360;
 636             else if (ya < 0)
 637                 ya += 360;
 638
 639             za += zs;
 640             if (za > 359)
 641                 za -= 360;
 642             else if (za < 0)
 643                 za += 360;
 644             redraw = true;
 645         }
 646
 647         button = rb->button_get(false);
 648         switch (button)
 649         {
 650             case CUBE_X_INC:
 651             case (CUBE_X_INC|BUTTON_REPEAT):
 652                 if( !paused )
 653                 {
 654                     if( xs < 10)
 655                     xs++;
 656                 }
 657                 else
 658                 {
 659                     xa++;
 660                     if( xa > 359 )
 661                         xa -= 360;
 662                 }
 663                 t_disp = DISP_TIME;
 664                 redraw = true;
 665                 break;
 666
 667             case CUBE_X_DEC:
 668             case (CUBE_X_DEC|BUTTON_REPEAT):
 669                 if( !paused )
 670                 {
 671                 if (xs > -10)
 672                     xs--;
 673                 }
 674                 else
 675                 {
 676                     xa--;
 677                     if( xa < 0 )
 678                         xa += 360;
 679                 }
 680                 t_disp = DISP_TIME;
 681                 redraw = true;
 682                 break;
 683
 684             case CUBE_Y_INC:
 685             case (CUBE_Y_INC|BUTTON_REPEAT):
 686                 if( !paused )
 687                 {
 688                 if (ys < 10)
 689                     ys++;
 690                 }
 691                 else
 692                 {
 693                     ya++;
 694                     if( ya > 359 )
 695                         ya -= 360;
 696                 }
 697                 t_disp = DISP_TIME;
 698                 redraw = true;
 699                 break;
 700
 701             case CUBE_Y_DEC:
 702             case (CUBE_Y_DEC|BUTTON_REPEAT):
 703                 if( !paused )
 704                 {
 705                 if (ys > -10)
 706                     ys--;
 707                 }
 708                 else
 709                 {
 710                     ya--;
 711                     if( ya < 0 )
 712                         ya += 360;
 713                 }
 714                 t_disp = DISP_TIME;
 715                 redraw = true;
 716                 break;
 717
 718             case CUBE_Z_INC:
 719             case (CUBE_Z_INC|BUTTON_REPEAT):
 720                 if( !paused )
 721                 {
 722                 if (zs < 10)
 723                     zs++;
 724                 }
 725                 else
 726                 {
 727                     za++;
 728                     if( za > 359 )
 729                         za -= 360;
 730                 }
 731                 t_disp = DISP_TIME;
 732                 redraw = true;
 733                 break;
 734
 735             case CUBE_Z_DEC:
 736             case (CUBE_Z_DEC|BUTTON_REPEAT):
 737                 if( !paused )
 738                 {
 739                 if (zs > -10)
 740                     zs--;
 741                 }
 742                 else
 743                 {
 744                     za--;
 745                     if( za < 0 )
 746                         za += 360;
 747                 }
 748                 t_disp = DISP_TIME;
 749                 redraw = true;
 750                 break;
 751
 752             case CUBE_MODE:
 753 #ifdef CUBE_MODE_PRE
 754                 if (lastbutton != CUBE_MODE_PRE)
 755                     break;
 756 #endif
 757                 if (++mode >= NUM_MODES)
 758                     mode = 0;
 759 #ifdef USE_GSLIB
 760                 mylcd = (mode == SOLID) ? &greyfuncs : &lcdfuncs;
 761                 mode_switch = true;
 762 #endif
 763                 redraw = true;
 764                 break;
 765
 766             case CUBE_PAUSE:
 767 #ifdef CUBE_PAUSE_PRE
 768                 if (lastbutton != CUBE_PAUSE_PRE)
 769                     break;
 770 #endif
 771                 paused = !paused;
 772                 break;
 773
 774             case CUBE_HIGHSPEED:
 775 #ifdef CUBE_HIGHSPEED_PRE
 776                 if (lastbutton != CUBE_HIGHSPEED_PRE)
 777                     break;
 778 #endif
 779                 highspeed = !highspeed;
 780                 t_disp = DISP_TIME;
 781                 break;
 782
 783 #ifdef CUBE_RC_QUIT
 784             case CUBE_RC_QUIT:
 785 #endif
 786             case CUBE_QUIT:
 787                 exit = true;
 788                 break;
 789
 790             default:
 791                 if (rb->default_event_handler_ex(button, cleanup, NULL)
 792                     == SYS_USB_CONNECTED)
 793                     return PLUGIN_USB_CONNECTED;
 794                 break;
 795         }
 796         if (button != BUTTON_NONE)
 797             lastbutton = button;
 798     }
 799
 800 #ifdef USE_GSLIB
 801     grey_release();
 802 #elif defined(HAVE_LCD_CHARCELLS)
 803     pgfx_release();
 804 #endif
 805     return PLUGIN_OK;
 806 }
 807