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 #elif (CONFIG_KEYPAD == MROBE100_PAD)
 221 #define CUBE_QUIT          BUTTON_POWER
 222 #define CUBE_X_INC         BUTTON_LEFT
 223 #define CUBE_X_DEC         BUTTON_RIGHT
 224 #define CUBE_Y_INC         BUTTON_UP
 225 #define CUBE_Y_DEC         BUTTON_DOWN
 226 #define CUBE_Z_INC         (BUTTON_DISPLAY | BUTTON_UP)
 227 #define CUBE_Z_DEC         (BUTTON_DISPLAY | BUTTON_DOWN)
 228 #define CUBE_MODE          BUTTON_MENU
 229 #define CUBE_PAUSE         BUTTON_PLAY
 230 #define CUBE_HIGHSPEED     BUTTON_SELECT
 231
 232 #else
 233 #error No keymap defined!
 234 #endif
 235
 236 #ifdef HAVE_LCD_BITMAP
 237
 238 #define DIST (10 * MIN(LCD_HEIGHT, LCD_WIDTH) / 16)
 239 static int x_off = LCD_WIDTH/2;
 240 static int y_off = LCD_HEIGHT/2;
 241
 242 #if LCD_DEPTH == 1
 243 #define USE_GSLIB
 244 GREY_INFO_STRUCT
 245 struct my_lcd {
 246     void (*update)(void);
 247     void (*clear_display)(void);
 248     void (*drawline)(int x1, int y1, int x2, int y2);
 249     void (*putsxy)(int x, int y, const unsigned char *string);
 250 };
 251
 252 static struct my_lcd greyfuncs = {
 253     grey_update, grey_clear_display, grey_drawline, grey_putsxy
 254 };
 255 static struct my_lcd lcdfuncs; /* initialised at runtime */
 256 static struct my_lcd *mylcd = &greyfuncs;
 257
 258 #define MYLCD(fn) mylcd->fn
 259 #define MY_FILLTRIANGLE(x1, y1, x2, y2, x3, y3) grey_filltriangle(x1, y1, x2, y2, x3, y3)
 260 #define MY_SET_FOREGROUND(fg) grey_set_foreground(fg)
 261 #define MY_GET_FOREGROUND() grey_get_foreground()
 262
 263 #else
 264 #define MYLCD(fn) rb->lcd_ ## fn
 265 #define MY_FILLTRIANGLE(x1, y1, x2, y2, x3, y3) xlcd_filltriangle(x1, y1, x2, y2, x3, y3)
 266 #define MY_SET_FOREGROUND(fg) rb->lcd_set_foreground(fg)
 267 #define MY_GET_FOREGROUND() rb->lcd_get_foreground()
 268 #endif
 269
 270 #if CONFIG_LCD == LCD_SSD1815
 271 #define ASPECT 320 /* = 1.25 (fixed point 24.8) */
 272 #else
 273 #define ASPECT 256 /* = 1.00 */
 274 #endif
 275
 276 #else /* !LCD_BITMAP */
 277
 278 #define MYLCD(fn) pgfx_ ## fn
 279 #define DIST 9
 280 static int x_off = 10;
 281 static int y_off = 7;
 282 #define ASPECT 300 /* = 1.175 */
 283
 284 #endif /* !LCD_BITMAP */
 285
 286 struct point_3D {
 287     long x, y, z;
 288 };
 289
 290 struct point_2D {
 291     long x, y;
 292 };
 293
 294 struct line {
 295     int start, end;
 296 };
 297
 298 struct face {
 299     int corner[4];
 300     int line[4];
 301 };
 302
 303 /* initial, unrotated cube corners */
 304 static const struct point_3D sommet[8] =
 305 {
 306     {-DIST, -DIST, -DIST},
 307     { DIST, -DIST, -DIST},
 308     { DIST,  DIST, -DIST},
 309     {-DIST,  DIST, -DIST},
 310     {-DIST, -DIST,  DIST},
 311     { DIST, -DIST,  DIST},
 312     { DIST,  DIST,  DIST},
 313     {-DIST,  DIST,  DIST}
 314 };
 315
 316 /* The 12 lines forming the edges */
 317 static const struct line lines[12] =
 318 {
 319     {0, 1}, {1, 2}, {2, 3}, {3, 0},
 320     {4, 7}, {7, 6}, {6, 5}, {5, 4},
 321     {0, 4}, {1, 5}, {2, 6}, {3, 7}
 322 };
 323
 324 static bool lines_drawn[12];
 325
 326 /* The 6 faces of the cube; points are in clockwise order when viewed
 327    from the outside */
 328 static const struct face faces[6] =
 329 {
 330     {{0, 1, 2, 3}, {0, 1, 2, 3}},
 331     {{4, 7, 6, 5}, {4, 5, 6, 7}},
 332     {{0, 4, 5, 1}, {8, 7, 9, 0}},
 333     {{2, 6, 7, 3}, {10, 5, 11, 2}},
 334     {{0, 3, 7, 4}, {3, 11, 4, 8}},
 335     {{1, 5, 6, 2}, {9, 6, 10, 1}}
 336 };
 337
 338 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 339 static const unsigned face_colors[6] =
 340 {
 341 #ifdef HAVE_LCD_COLOR
 342     LCD_RGBPACK(255, 0, 0), LCD_RGBPACK(255, 0, 0), LCD_RGBPACK(0, 255, 0),
 343     LCD_RGBPACK(0, 255, 0), LCD_RGBPACK(0, 0, 255), LCD_RGBPACK(0, 0, 255)
 344 #elif defined(USE_GSLIB)
 345     GREY_LIGHTGRAY, GREY_LIGHTGRAY, GREY_DARKGRAY,
 346     GREY_DARKGRAY,  GREY_BLACK,     GREY_BLACK
 347 #else
 348     LCD_LIGHTGRAY, LCD_LIGHTGRAY, LCD_DARKGRAY,
 349     LCD_DARKGRAY,  LCD_BLACK,     LCD_BLACK
 350 #endif
 351 };
 352 #endif
 353
 354 enum {
 355 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 356     SOLID,
 357 #endif
 358     HIDDEN_LINES,
 359     WIREFRAME,
 360     NUM_MODES
 361 };
 362
 363 static int mode = 0;
 364
 365 static struct point_3D point3D[8];
 366 static struct point_2D point2D[8];
 367 static long matrice[3][3];
 368
 369 static const int nb_points = 8;
 370 static long z_off = 600;
 371
 372 static struct plugin_api* rb;
 373
 374 static void cube_rotate(int xa, int ya, int za)
 375 {
 376     int i;
 377     /* Just to prevent unnecessary lookups */
 378     long sxa, cxa, sya, cya, sza, cza;
 379
 380     sxa = sin_int(xa);
 381     cxa = cos_int(xa);
 382     sya = sin_int(ya);
 383     cya = cos_int(ya);
 384     sza = sin_int(za);
 385     cza = cos_int(za);
 386
 387     /* calculate overall translation matrix */
 388     matrice[0][0] = (cza * cya) >> 14;
 389     matrice[1][0] = (sza * cya) >> 14;
 390     matrice[2][0] = -sya;
 391
 392     matrice[0][1] = (((cza * sya) >> 14) * sxa - sza * cxa) >> 14;
 393     matrice[1][1] = (((sza * sya) >> 14) * sxa + cxa * cza) >> 14;
 394     matrice[2][1] = (sxa * cya) >> 14;
 395
 396     matrice[0][2] = (((cza * sya) >> 14) * cxa + sza * sxa) >> 14;
 397     matrice[1][2] = (((sza * sya) >> 14) * cxa - cza * sxa) >> 14;
 398     matrice[2][2] = (cxa * cya) >> 14;
 399
 400     /* apply translation matrix to all points */
 401     for (i = 0; i < nb_points; i++)
 402     {
 403         point3D[i].x = matrice[0][0] * sommet[i].x + matrice[1][0] * sommet[i].y
 404                      + matrice[2][0] * sommet[i].z;
 405
 406         point3D[i].y = matrice[0][1] * sommet[i].x + matrice[1][1] * sommet[i].y
 407                      + matrice[2][1] * sommet[i].z;
 408
 409         point3D[i].z = matrice[0][2] * sommet[i].x + matrice[1][2] * sommet[i].y
 410                      + matrice[2][2] * sommet[i].z;
 411     }
 412 }
 413
 414 static void cube_viewport(void)
 415 {
 416     int i;
 417
 418     /* Do viewport transformation for all points */
 419     for (i = 0; i < nb_points; i++)
 420     {
 421 #if ASPECT != 256
 422         point2D[i].x = (point3D[i].x * ASPECT) / (point3D[i].z + (z_off << 14))
 423                      + x_off;
 424 #else
 425         point2D[i].x = (point3D[i].x << 8) / (point3D[i].z + (z_off << 14))
 426                      + x_off;
 427 #endif
 428         point2D[i].y = (point3D[i].y << 8) / (point3D[i].z + (z_off << 14))
 429                      + y_off;
 430     }
 431 }
 432
 433 static void cube_draw(void)
 434 {
 435     int i, j, line;
 436 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 437     unsigned old_foreground;
 438 #endif
 439
 440     switch (mode)
 441     {
 442 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 443       case SOLID:
 444
 445         old_foreground = MY_GET_FOREGROUND();
 446         for (i = 0; i < 6; i++)
 447         {
 448             /* backface culling; if the shape winds counter-clockwise, we are
 449              * looking at the backface, and the (simplified) cross product
 450              * is < 0. Do not draw it. */
 451             if (0 >= (point2D[faces[i].corner[1]].x - point2D[faces[i].corner[0]].x)
 452                    * (point2D[faces[i].corner[2]].y - point2D[faces[i].corner[1]].y)
 453                    - (point2D[faces[i].corner[1]].y - point2D[faces[i].corner[0]].y)
 454                    * (point2D[faces[i].corner[2]].x - point2D[faces[i].corner[1]].x))
 455                 continue;
 456
 457             MY_SET_FOREGROUND(face_colors[i]);
 458             MY_FILLTRIANGLE(point2D[faces[i].corner[0]].x,
 459                             point2D[faces[i].corner[0]].y,
 460                             point2D[faces[i].corner[1]].x,
 461                             point2D[faces[i].corner[1]].y,
 462                             point2D[faces[i].corner[2]].x,
 463                             point2D[faces[i].corner[2]].y);
 464             MY_FILLTRIANGLE(point2D[faces[i].corner[0]].x,
 465                             point2D[faces[i].corner[0]].y,
 466                             point2D[faces[i].corner[2]].x,
 467                             point2D[faces[i].corner[2]].y,
 468                             point2D[faces[i].corner[3]].x,
 469                             point2D[faces[i].corner[3]].y);
 470
 471         }
 472         MY_SET_FOREGROUND(old_foreground);
 473         break;
 474 #endif /* (LCD_DEPTH > 1) || GSLIB */
 475
 476       case HIDDEN_LINES:
 477
 478         rb->memset(lines_drawn, 0, sizeof(lines_drawn));
 479         for (i = 0; i < 6; i++)
 480         {
 481             /* backface culling; if the shape winds counter-clockwise, we are
 482              * looking at the backface, and the (simplified) cross product
 483              * is < 0. Do not draw it. */
 484             if (0 >= (point2D[faces[i].corner[1]].x - point2D[faces[i].corner[0]].x)
 485                    * (point2D[faces[i].corner[2]].y - point2D[faces[i].corner[1]].y)
 486                    - (point2D[faces[i].corner[1]].y - point2D[faces[i].corner[0]].y)
 487                    * (point2D[faces[i].corner[2]].x - point2D[faces[i].corner[1]].x))
 488                 continue;
 489
 490             for (j = 0; j < 4; j++)
 491             {
 492                 line = faces[i].line[j];
 493                 if (!lines_drawn[line])
 494                 {
 495                     lines_drawn[line] = true;
 496                     MYLCD(drawline)(point2D[lines[line].start].x,
 497                                     point2D[lines[line].start].y,
 498                                     point2D[lines[line].end].x,
 499                                     point2D[lines[line].end].y);
 500                 }
 501             }
 502         }
 503         break;
 504
 505       case WIREFRAME:
 506
 507         for (i = 0; i < 12; i++)
 508             MYLCD(drawline)(point2D[lines[i].start].x,
 509                             point2D[lines[i].start].y,
 510                             point2D[lines[i].end].x,
 511                             point2D[lines[i].end].y);
 512         break;
 513     }
 514 }
 515
 516 void cleanup(void *parameter)
 517 {
 518     (void)parameter;
 519
 520 #ifdef USE_GSLIB
 521     grey_release();
 522 #elif defined HAVE_LCD_CHARCELLS
 523     pgfx_release();
 524 #endif
 525 }
 526
 527 enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
 528 {
 529     char buffer[30];
 530     int t_disp = 0;
 531 #ifdef USE_GSLIB
 532     unsigned char *gbuf;
 533     size_t gbuf_size = 0;
 534     bool mode_switch = true;
 535 #endif
 536
 537     int button;
 538     int lastbutton = BUTTON_NONE;
 539     int xa = 0;
 540     int ya = 0;
 541     int za = 0;
 542     int xs = 1;
 543     int ys = 3;
 544     int zs = 1;
 545     bool highspeed = false;
 546     bool paused = false;
 547     bool redraw = true;
 548     bool exit = false;
 549
 550     (void)(parameter);
 551     rb = api;
 552
 553 #ifdef HAVE_LCD_BITMAP
 554 #if LCD_DEPTH > 1
 555     xlcd_init(rb);
 556 #elif defined(USE_GSLIB)
 557     gbuf = (unsigned char *)rb->plugin_get_buffer(&gbuf_size);
 558     if (!grey_init(rb, gbuf, gbuf_size, GREY_BUFFERED,
 559                    LCD_WIDTH, LCD_HEIGHT, NULL))
 560     {
 561         rb->splash(HZ, "Couldn't init greyscale display");
 562         return PLUGIN_ERROR;
 563     }
 564     /* init lcd_ function pointers */
 565     lcdfuncs.update =        rb->lcd_update;
 566     lcdfuncs.clear_display = rb->lcd_clear_display;
 567     lcdfuncs.drawline =      rb->lcd_drawline;
 568     lcdfuncs.putsxy =        rb->lcd_putsxy;
 569
 570     grey_setfont(FONT_SYSFIXED);
 571 #endif
 572     rb->lcd_setfont(FONT_SYSFIXED);
 573 #else /* LCD_CHARCELLS */
 574     if (!pgfx_init(rb, 4, 2))
 575     {
 576         rb->splash(HZ*2, "Old LCD :(");
 577         return PLUGIN_OK;
 578     }
 579     pgfx_display(3, 0);
 580 #endif
 581
 582     while(!exit)
 583     {
 584         if (highspeed)
 585             rb->yield();
 586         else
 587             rb->sleep(4);
 588
 589         if (redraw)
 590         {
 591             MYLCD(clear_display)();
 592             cube_rotate(xa, ya, za);
 593             cube_viewport();
 594             cube_draw();
 595             redraw = false;
 596         }
 597
 598 #ifdef HAVE_LCD_BITMAP
 599         if (t_disp > 0)
 600         {
 601             t_disp--;
 602             rb->snprintf(buffer, sizeof(buffer), "x:%d y:%d z:%d h:%d",
 603                          xs, ys, zs, highspeed);
 604             MYLCD(putsxy)(0, LCD_HEIGHT-8, buffer);
 605             if (t_disp == 0)
 606                 redraw = true;
 607         }
 608 #else
 609         if (t_disp > 0)
 610         {
 611             if (t_disp == DISP_TIME)
 612             {
 613                 rb->snprintf(buffer, sizeof(buffer), "x%d", xs);
 614                 rb->lcd_puts(0, 0, buffer);
 615                 rb->snprintf(buffer, sizeof(buffer), "y%d", ys);
 616                 rb->lcd_puts(0, 1, buffer);
 617                 pgfx_display(3, 0);
 618                 rb->snprintf(buffer, sizeof(buffer), "z%d", zs);
 619                 rb->lcd_puts(8, 0, buffer);
 620                 rb->snprintf(buffer, sizeof(buffer), "h%d", highspeed);
 621                 rb->lcd_puts(8, 1, buffer);
 622             }
 623             t_disp--;
 624             if (t_disp == 0)
 625             {
 626                 rb->lcd_clear_display();
 627                 pgfx_display(3, 0);
 628             }
 629         }
 630 #endif
 631 #ifdef USE_GSLIB
 632         if (mode_switch)
 633         {
 634             grey_show(mode == SOLID);
 635             mode_switch = false;
 636         }
 637 #endif
 638         MYLCD(update)();
 639
 640         if (!paused)
 641         {
 642             xa += xs;
 643             if (xa > 359)
 644                 xa -= 360;
 645             else if (xa < 0)
 646                 xa += 360;
 647
 648             ya += ys;
 649             if (ya > 359)
 650                 ya -= 360;
 651             else if (ya < 0)
 652                 ya += 360;
 653
 654             za += zs;
 655             if (za > 359)
 656                 za -= 360;
 657             else if (za < 0)
 658                 za += 360;
 659             redraw = true;
 660         }
 661
 662         button = rb->button_get(false);
 663         switch (button)
 664         {
 665             case CUBE_X_INC:
 666             case (CUBE_X_INC|BUTTON_REPEAT):
 667                 if( !paused )
 668                 {
 669                     if( xs < 10)
 670                     xs++;
 671                 }
 672                 else
 673                 {
 674                     xa++;
 675                     if( xa > 359 )
 676                         xa -= 360;
 677                 }
 678                 t_disp = DISP_TIME;
 679                 redraw = true;
 680                 break;
 681
 682             case CUBE_X_DEC:
 683             case (CUBE_X_DEC|BUTTON_REPEAT):
 684                 if( !paused )
 685                 {
 686                 if (xs > -10)
 687                     xs--;
 688                 }
 689                 else
 690                 {
 691                     xa--;
 692                     if( xa < 0 )
 693                         xa += 360;
 694                 }
 695                 t_disp = DISP_TIME;
 696                 redraw = true;
 697                 break;
 698
 699             case CUBE_Y_INC:
 700             case (CUBE_Y_INC|BUTTON_REPEAT):
 701                 if( !paused )
 702                 {
 703                 if (ys < 10)
 704                     ys++;
 705                 }
 706                 else
 707                 {
 708                     ya++;
 709                     if( ya > 359 )
 710                         ya -= 360;
 711                 }
 712                 t_disp = DISP_TIME;
 713                 redraw = true;
 714                 break;
 715
 716             case CUBE_Y_DEC:
 717             case (CUBE_Y_DEC|BUTTON_REPEAT):
 718                 if( !paused )
 719                 {
 720                 if (ys > -10)
 721                     ys--;
 722                 }
 723                 else
 724                 {
 725                     ya--;
 726                     if( ya < 0 )
 727                         ya += 360;
 728                 }
 729                 t_disp = DISP_TIME;
 730                 redraw = true;
 731                 break;
 732
 733             case CUBE_Z_INC:
 734             case (CUBE_Z_INC|BUTTON_REPEAT):
 735                 if( !paused )
 736                 {
 737                 if (zs < 10)
 738                     zs++;
 739                 }
 740                 else
 741                 {
 742                     za++;
 743                     if( za > 359 )
 744                         za -= 360;
 745                 }
 746                 t_disp = DISP_TIME;
 747                 redraw = true;
 748                 break;
 749
 750             case CUBE_Z_DEC:
 751             case (CUBE_Z_DEC|BUTTON_REPEAT):
 752                 if( !paused )
 753                 {
 754                 if (zs > -10)
 755                     zs--;
 756                 }
 757                 else
 758                 {
 759                     za--;
 760                     if( za < 0 )
 761                         za += 360;
 762                 }
 763                 t_disp = DISP_TIME;
 764                 redraw = true;
 765                 break;
 766
 767             case CUBE_MODE:
 768 #ifdef CUBE_MODE_PRE
 769                 if (lastbutton != CUBE_MODE_PRE)
 770                     break;
 771 #endif
 772                 if (++mode >= NUM_MODES)
 773                     mode = 0;
 774 #ifdef USE_GSLIB
 775                 mylcd = (mode == SOLID) ? &greyfuncs : &lcdfuncs;
 776                 mode_switch = true;
 777 #endif
 778                 redraw = true;
 779                 break;
 780
 781             case CUBE_PAUSE:
 782 #ifdef CUBE_PAUSE_PRE
 783                 if (lastbutton != CUBE_PAUSE_PRE)
 784                     break;
 785 #endif
 786                 paused = !paused;
 787                 break;
 788
 789             case CUBE_HIGHSPEED:
 790 #ifdef CUBE_HIGHSPEED_PRE
 791                 if (lastbutton != CUBE_HIGHSPEED_PRE)
 792                     break;
 793 #endif
 794                 highspeed = !highspeed;
 795                 t_disp = DISP_TIME;
 796                 break;
 797
 798 #ifdef CUBE_RC_QUIT
 799             case CUBE_RC_QUIT:
 800 #endif
 801             case CUBE_QUIT:
 802                 exit = true;
 803                 break;
 804
 805             default:
 806                 if (rb->default_event_handler_ex(button, cleanup, NULL)
 807                     == SYS_USB_CONNECTED)
 808                     return PLUGIN_USB_CONNECTED;
 809                 break;
 810         }
 811         if (button != BUTTON_NONE)
 812             lastbutton = button;
 813     }
 814
 815 #ifdef USE_GSLIB
 816     grey_release();
 817 #elif defined(HAVE_LCD_CHARCELLS)
 818     pgfx_release();
 819 #endif
 820     return PLUGIN_OK;
 821 }
 822