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 * This program is free software; you can redistribute it and/or
  15 * modify it under the terms of the GNU General Public License
  16 * as published by the Free Software Foundation; either version 2
  17 * of the License, or (at your option) any later version.
  18 *
  19 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  20 * KIND, either express or implied.
  21 *
  22 ***************************************************************************/
  23 #include "plugin.h"
  24 #include "lib/grey.h"
  25 #include "lib/playergfx.h"
  26 #include "lib/xlcd.h"
  27 #include "lib/fixedpoint.h"
  28
  29 PLUGIN_HEADER
  30
  31 /* Loops that the values are displayed */
  32 #define DISP_TIME 30
  33
  34 /* variable button definitions */
  35 #if CONFIG_KEYPAD == RECORDER_PAD
  36 #define CUBE_QUIT          BUTTON_OFF
  37 #define CUBE_NEXT          BUTTON_RIGHT
  38 #define CUBE_PREV          BUTTON_LEFT
  39 #define CUBE_INC           BUTTON_UP
  40 #define CUBE_DEC           BUTTON_DOWN
  41 #define CUBE_MODE          BUTTON_F1
  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_NEXT          BUTTON_RIGHT
  48 #define CUBE_PREV          BUTTON_LEFT
  49 #define CUBE_INC           BUTTON_UP
  50 #define CUBE_DEC           BUTTON_DOWN
  51 #define CUBE_MODE          BUTTON_F1
  52 #define CUBE_PAUSE         BUTTON_SELECT
  53 #define CUBE_HIGHSPEED     BUTTON_ON
  54
  55 #elif CONFIG_KEYPAD == PLAYER_PAD
  56 #define CUBE_QUIT          BUTTON_STOP
  57 #define CUBE_INC           BUTTON_RIGHT
  58 #define CUBE_DEC           BUTTON_LEFT
  59 #define CUBE_NEXT          (BUTTON_ON | BUTTON_RIGHT)
  60 #define CUBE_PREV          (BUTTON_ON | BUTTON_LEFT)
  61 #define CUBE_MODE          BUTTON_MENU
  62 #define CUBE_PAUSE         BUTTON_PLAY
  63 #define CUBE_HIGHSPEED_PRE BUTTON_ON
  64 #define CUBE_HIGHSPEED     (BUTTON_ON | BUTTON_REL)
  65
  66 #elif CONFIG_KEYPAD == ONDIO_PAD
  67 #define CUBE_QUIT          BUTTON_OFF
  68 #define CUBE_NEXT          BUTTON_RIGHT
  69 #define CUBE_PREV          BUTTON_LEFT
  70 #define CUBE_INC           BUTTON_UP
  71 #define CUBE_DEC           BUTTON_DOWN
  72 #define CUBE_MODE_PRE      BUTTON_MENU
  73 #define CUBE_MODE          (BUTTON_MENU | BUTTON_REL)
  74 #define CUBE_PAUSE         (BUTTON_MENU | BUTTON_LEFT)
  75 #define CUBE_HIGHSPEED     (BUTTON_MENU | BUTTON_RIGHT)
  76
  77 #elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
  78       (CONFIG_KEYPAD == IRIVER_H300_PAD)
  79 #define CUBE_QUIT          BUTTON_OFF
  80 #define CUBE_NEXT          BUTTON_RIGHT
  81 #define CUBE_PREV          BUTTON_LEFT
  82 #define CUBE_INC           BUTTON_UP
  83 #define CUBE_DEC           BUTTON_DOWN
  84 #define CUBE_MODE          BUTTON_MODE
  85 #define CUBE_PAUSE         BUTTON_ON
  86 #define CUBE_HIGHSPEED     BUTTON_SELECT
  87
  88 #define CUBE_RC_QUIT       BUTTON_RC_STOP
  89
  90 #elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
  91       (CONFIG_KEYPAD == IPOD_3G_PAD) || \
  92       (CONFIG_KEYPAD == IPOD_1G2G_PAD)
  93 #define CUBE_QUIT          (BUTTON_SELECT | BUTTON_MENU)
  94 #define CUBE_NEXT          BUTTON_RIGHT
  95 #define CUBE_PREV          BUTTON_LEFT
  96 #define CUBE_INC           BUTTON_SCROLL_FWD
  97 #define CUBE_DEC           BUTTON_SCROLL_BACK
  98 #define CUBE_MODE          BUTTON_MENU
  99 #define CUBE_PAUSE         BUTTON_PLAY
 100 #define CUBE_HIGHSPEED_PRE BUTTON_SELECT
 101 #define CUBE_HIGHSPEED     (BUTTON_SELECT | BUTTON_REL)
 102
 103 #elif CONFIG_KEYPAD == IRIVER_IFP7XX_PAD
 104 #define CUBE_QUIT          BUTTON_PLAY
 105 #define CUBE_NEXT          BUTTON_RIGHT
 106 #define CUBE_PREV          BUTTON_LEFT
 107 #define CUBE_INC           BUTTON_UP
 108 #define CUBE_DEC           BUTTON_DOWN
 109 #define CUBE_MODE          BUTTON_MODE
 110 #define CUBE_PAUSE         BUTTON_SELECT
 111 #define CUBE_HIGHSPEED     BUTTON_EQ
 112
 113 #elif (CONFIG_KEYPAD == IAUDIO_X5M5_PAD)
 114 #define CUBE_QUIT          BUTTON_POWER
 115 #define CUBE_NEXT          BUTTON_RIGHT
 116 #define CUBE_PREV          BUTTON_LEFT
 117 #define CUBE_INC           BUTTON_UP
 118 #define CUBE_DEC           BUTTON_DOWN
 119 #define CUBE_MODE          BUTTON_REC
 120 #define CUBE_PAUSE         BUTTON_PLAY
 121 #define CUBE_HIGHSPEED     BUTTON_SELECT
 122
 123 #elif (CONFIG_KEYPAD == GIGABEAT_PAD)
 124 #define CUBE_QUIT          BUTTON_POWER
 125 #define CUBE_NEXT          BUTTON_RIGHT
 126 #define CUBE_PREV          BUTTON_LEFT
 127 #define CUBE_INC           BUTTON_UP
 128 #define CUBE_DEC           BUTTON_DOWN
 129 #define CUBE_MODE          BUTTON_MENU
 130 #define CUBE_PAUSE         BUTTON_SELECT
 131 #define CUBE_HIGHSPEED     BUTTON_A
 132
 133 #elif (CONFIG_KEYPAD == SANSA_E200_PAD)
 134 #define CUBE_QUIT          BUTTON_POWER
 135 #define CUBE_NEXT          BUTTON_RIGHT
 136 #define CUBE_PREV          BUTTON_LEFT
 137 #define CUBE_INC           BUTTON_SCROLL_FWD
 138 #define CUBE_DEC           BUTTON_SCROLL_BACK
 139 #define CUBE_MODE          BUTTON_DOWN
 140 #define CUBE_PAUSE         BUTTON_UP
 141 #define CUBE_HIGHSPEED     BUTTON_SELECT
 142
 143 #elif (CONFIG_KEYPAD == SANSA_FUZE_PAD)
 144 #define CUBE_QUIT          (BUTTON_HOME|BUTTON_REPEAT)
 145 #define CUBE_NEXT          BUTTON_RIGHT
 146 #define CUBE_PREV          BUTTON_LEFT
 147 #define CUBE_INC           BUTTON_SCROLL_FWD
 148 #define CUBE_DEC           BUTTON_SCROLL_BACK
 149 #define CUBE_MODE          BUTTON_DOWN
 150 #define CUBE_PAUSE         BUTTON_UP
 151 #define CUBE_HIGHSPEED     BUTTON_SELECT
 152
 153 #elif (CONFIG_KEYPAD == SANSA_C200_PAD) || \
 154 (CONFIG_KEYPAD == SANSA_CLIP_PAD) || \
 155 (CONFIG_KEYPAD == SANSA_M200_PAD)
 156 #define CUBE_QUIT          BUTTON_POWER
 157 #define CUBE_NEXT          BUTTON_RIGHT
 158 #define CUBE_PREV          BUTTON_LEFT
 159 #define CUBE_INC           BUTTON_VOL_UP
 160 #define CUBE_DEC           BUTTON_VOL_DOWN
 161 #define CUBE_MODE          BUTTON_DOWN
 162 #define CUBE_PAUSE         BUTTON_UP
 163 #define CUBE_HIGHSPEED     BUTTON_SELECT
 164
 165
 166 #elif (CONFIG_KEYPAD == IRIVER_H10_PAD)
 167 #define CUBE_QUIT          BUTTON_POWER
 168 #define CUBE_NEXT          BUTTON_RIGHT
 169 #define CUBE_PREV          BUTTON_LEFT
 170 #define CUBE_INC           BUTTON_SCROLL_UP
 171 #define CUBE_DEC           BUTTON_SCROLL_DOWN
 172 #define CUBE_MODE          BUTTON_REW
 173 #define CUBE_PAUSE         BUTTON_PLAY
 174 #define CUBE_HIGHSPEED     BUTTON_FF
 175
 176 #elif CONFIG_KEYPAD == MROBE500_PAD
 177 #define CUBE_QUIT          BUTTON_POWER
 178
 179 #elif CONFIG_KEYPAD == GIGABEAT_S_PAD
 180 #define CUBE_QUIT          BUTTON_BACK
 181 #define CUBE_NEXT          BUTTON_RIGHT
 182 #define CUBE_PREV          BUTTON_LEFT
 183 #define CUBE_INC           BUTTON_UP
 184 #define CUBE_DEC           BUTTON_DOWN
 185 #define CUBE_MODE          BUTTON_MENU
 186 #define CUBE_PAUSE         BUTTON_PLAY
 187 #define CUBE_HIGHSPEED     BUTTON_SELECT
 188
 189 #elif (CONFIG_KEYPAD == MROBE100_PAD)
 190 #define CUBE_QUIT          BUTTON_POWER
 191 #define CUBE_NEXT          BUTTON_RIGHT
 192 #define CUBE_PREV          BUTTON_LEFT
 193 #define CUBE_INC           BUTTON_UP
 194 #define CUBE_DEC           BUTTON_DOWN
 195 #define CUBE_MODE          BUTTON_MENU
 196 #define CUBE_PAUSE         BUTTON_PLAY
 197 #define CUBE_HIGHSPEED     BUTTON_SELECT
 198
 199 #elif (CONFIG_KEYPAD == IAUDIO_M3_PAD)
 200 #define CUBE_QUIT          BUTTON_RC_REC
 201 #define CUBE_NEXT          BUTTON_RC_FF
 202 #define CUBE_PREV          BUTTON_RC_REW
 203 #define CUBE_INC           BUTTON_RC_VOL_UP
 204 #define CUBE_DEC           BUTTON_RC_VOL_DOWN
 205 #define CUBE_MODE          BUTTON_RC_MODE
 206 #define CUBE_PAUSE         BUTTON_RC_PLAY
 207 #define CUBE_HIGHSPEED     BUTTON_RC_MENU
 208
 209 #elif CONFIG_KEYPAD == COWOND2_PAD
 210 #define CUBE_QUIT          BUTTON_POWER
 211
 212 #elif (CONFIG_KEYPAD == IAUDIO67_PAD)
 213 #define CUBE_QUIT          BUTTON_POWER
 214 #define CUBE_NEXT          BUTTON_RIGHT
 215 #define CUBE_PREV          BUTTON_LEFT
 216 #define CUBE_INC           BUTTON_VOLUP
 217 #define CUBE_DEC           BUTTON_VOLDOWN
 218 #define CUBE_MODE          BUTTON_MENU
 219 #define CUBE_PAUSE         BUTTON_PLAY
 220 #define CUBE_HIGHSPEED     BUTTON_STOP
 221
 222 #elif CONFIG_KEYPAD == CREATIVEZVM_PAD
 223 #define CUBE_QUIT          BUTTON_BACK
 224 #define CUBE_NEXT          BUTTON_RIGHT
 225 #define CUBE_PREV          BUTTON_LEFT
 226 #define CUBE_INC           BUTTON_UP
 227 #define CUBE_DEC           BUTTON_DOWN
 228 #define CUBE_MODE          BUTTON_MENU
 229 #define CUBE_PAUSE         BUTTON_PLAY
 230 #define CUBE_HIGHSPEED     BUTTON_SELECT
 231
 232 #elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
 233 #define CUBE_QUIT          BUTTON_POWER
 234 #define CUBE_NEXT          BUTTON_RIGHT
 235 #define CUBE_PREV          BUTTON_LEFT
 236 #define CUBE_INC           BUTTON_UP
 237 #define CUBE_DEC           BUTTON_DOWN
 238 #define CUBE_MODE          BUTTON_MENU
 239 #define CUBE_PAUSE         BUTTON_SELECT
 240 #define CUBE_HIGHSPEED     BUTTON_VIEW
 241
 242 #elif CONFIG_KEYPAD == ONDAVX747_PAD
 243 #define CUBE_QUIT          BUTTON_POWER
 244
 245 #else
 246 #error No keymap defined!
 247 #endif
 248
 249 #ifdef HAVE_TOUCHSCREEN
 250 #ifndef CUBE_QUIT
 251 #define CUBE_QUIT          BUTTON_TOPLEFT
 252 #endif
 253 #ifndef CUBE_NEXT
 254 #define CUBE_NEXT          BUTTON_MIDRIGHT
 255 #endif
 256 #ifndef CUBE_PREV
 257 #define CUBE_PREV          BUTTON_MIDLEFT
 258 #endif
 259 #ifndef CUBE_INC
 260 #define CUBE_INC           BUTTON_TOPMIDDLE
 261 #endif
 262 #ifndef CUBE_DEC
 263 #define CUBE_DEC           BUTTON_BOTTOMMIDDLE
 264 #endif
 265 #ifndef CUBE_MODE
 266 #define CUBE_MODE          BUTTON_TOPRIGHT
 267 #endif
 268 #ifndef CUBE_PAUSE
 269 #define CUBE_PAUSE         BUTTON_CENTER
 270 #endif
 271 #ifndef CUBE_HIGHSPEED
 272 #define CUBE_HIGHSPEED     BUTTON_BOTTOMRIGHT
 273 #endif
 274 #endif
 275
 276
 277 #ifdef HAVE_LCD_BITMAP
 278
 279 #define DIST (10 * MIN(LCD_HEIGHT, LCD_WIDTH) / 16)
 280 static int x_off = LCD_WIDTH/2;
 281 static int y_off = LCD_HEIGHT/2;
 282
 283 #if LCD_DEPTH == 1
 284 #define USE_GSLIB
 285 GREY_INFO_STRUCT
 286 struct my_lcd {
 287     void (*update)(void);
 288     void (*clear_display)(void);
 289     void (*drawline)(int x1, int y1, int x2, int y2);
 290     void (*putsxy)(int x, int y, const unsigned char *string);
 291 };
 292
 293 static struct my_lcd greyfuncs = {
 294     grey_update, grey_clear_display, grey_drawline, grey_putsxy
 295 };
 296 static struct my_lcd lcdfuncs; /* initialised at runtime */
 297 static struct my_lcd *mylcd = &greyfuncs;
 298
 299 #define MYLCD(fn) mylcd->fn
 300 #define MY_FILLTRIANGLE(x1, y1, x2, y2, x3, y3) grey_filltriangle(x1, y1, x2, y2, x3, y3)
 301 #define MY_SET_FOREGROUND(fg) grey_set_foreground(fg)
 302 #define MY_GET_FOREGROUND() grey_get_foreground()
 303
 304 #else
 305 #define MYLCD(fn) rb->lcd_ ## fn
 306 #define MY_FILLTRIANGLE(x1, y1, x2, y2, x3, y3) xlcd_filltriangle(x1, y1, x2, y2, x3, y3)
 307 #define MY_SET_FOREGROUND(fg) rb->lcd_set_foreground(fg)
 308 #define MY_GET_FOREGROUND() rb->lcd_get_foreground()
 309 #endif
 310
 311 #if CONFIG_LCD == LCD_SSD1815
 312 #define ASPECT 320 /* = 1.25 (fixed point 24.8) */
 313 #else
 314 #define ASPECT 256 /* = 1.00 */
 315 #endif
 316
 317 #else /* !LCD_BITMAP */
 318
 319 #define MYLCD(fn) pgfx_ ## fn
 320 #define DIST 9
 321 static int x_off = 10;
 322 static int y_off = 7;
 323 #define ASPECT 300 /* = 1.175 */
 324
 325 #endif /* !LCD_BITMAP */
 326
 327 struct point_3D {
 328     long x, y, z;
 329 };
 330
 331 struct point_2D {
 332     long x, y;
 333 };
 334
 335 struct line {
 336     int start, end;
 337 };
 338
 339 struct face {
 340     int corner[4];
 341     int line[4];
 342 };
 343
 344 /* initial, unrotated cube corners */
 345 static const struct point_3D sommet[8] =
 346 {
 347     {-DIST, -DIST, -DIST},
 348     { DIST, -DIST, -DIST},
 349     { DIST,  DIST, -DIST},
 350     {-DIST,  DIST, -DIST},
 351     {-DIST, -DIST,  DIST},
 352     { DIST, -DIST,  DIST},
 353     { DIST,  DIST,  DIST},
 354     {-DIST,  DIST,  DIST}
 355 };
 356
 357 /* The 12 lines forming the edges */
 358 static const struct line lines[12] =
 359 {
 360     {0, 1}, {1, 2}, {2, 3}, {3, 0},
 361     {4, 7}, {7, 6}, {6, 5}, {5, 4},
 362     {0, 4}, {1, 5}, {2, 6}, {3, 7}
 363 };
 364
 365 static bool lines_drawn[12];
 366
 367 /* The 6 faces of the cube; points are in clockwise order when viewed
 368    from the outside */
 369 static const struct face faces[6] =
 370 {
 371     {{0, 1, 2, 3}, {0, 1, 2, 3}},
 372     {{4, 7, 6, 5}, {4, 5, 6, 7}},
 373     {{0, 4, 5, 1}, {8, 7, 9, 0}},
 374     {{2, 6, 7, 3}, {10, 5, 11, 2}},
 375     {{0, 3, 7, 4}, {3, 11, 4, 8}},
 376     {{1, 5, 6, 2}, {9, 6, 10, 1}}
 377 };
 378
 379 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 380 static const unsigned face_colors[6] =
 381 {
 382 #ifdef HAVE_LCD_COLOR
 383     LCD_RGBPACK(255, 0, 0), LCD_RGBPACK(255, 0, 0), LCD_RGBPACK(0, 255, 0),
 384     LCD_RGBPACK(0, 255, 0), LCD_RGBPACK(0, 0, 255), LCD_RGBPACK(0, 0, 255)
 385 #elif defined(USE_GSLIB)
 386 #ifdef MROBE_100
 387     GREY_LIGHTGRAY, GREY_LIGHTGRAY, GREY_DARKGRAY,
 388     GREY_DARKGRAY,  GREY_WHITE,     GREY_WHITE
 389 #else
 390     GREY_LIGHTGRAY, GREY_LIGHTGRAY, GREY_DARKGRAY,
 391     GREY_DARKGRAY,  GREY_BLACK,     GREY_BLACK
 392 #endif
 393 #else
 394     LCD_LIGHTGRAY, LCD_LIGHTGRAY, LCD_DARKGRAY,
 395     LCD_DARKGRAY,  LCD_BLACK,     LCD_BLACK
 396 #endif
 397 };
 398 #endif
 399
 400 enum {
 401 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 402     SOLID,
 403 #endif
 404     HIDDEN_LINES,
 405     WIREFRAME,
 406     NUM_MODES
 407 };
 408
 409 static int mode = 0;
 410
 411 struct counter {
 412     const char *label;
 413     short speed;
 414     short angle;
 415 };
 416
 417 static struct counter axes[] = {
 418     {"x-axis", 1, 0},
 419     {"y-axis", 3, 0},
 420     {"z-axis", 2, 0}
 421 };
 422
 423 static struct point_3D point3D[8];
 424 static struct point_2D point2D[8];
 425 static long matrice[3][3];
 426
 427 static const int nb_points = 8;
 428 static long z_off = 600;
 429
 430 static void cube_rotate(int xa, int ya, int za)
 431 {
 432     int i;
 433     /* Just to prevent unnecessary lookups */
 434     long sxa, cxa, sya, cya, sza, cza;
 435
 436     sxa = fp14_sin(xa);
 437     cxa = fp14_cos(xa);
 438     sya = fp14_sin(ya);
 439     cya = fp14_cos(ya);
 440     sza = fp14_sin(za);
 441     cza = fp14_cos(za);
 442
 443     /* calculate overall translation matrix */
 444     matrice[0][0] = (cza * cya) >> 14;
 445     matrice[1][0] = (sza * cya) >> 14;
 446     matrice[2][0] = -sya;
 447
 448     matrice[0][1] = (((cza * sya) >> 14) * sxa - sza * cxa) >> 14;
 449     matrice[1][1] = (((sza * sya) >> 14) * sxa + cxa * cza) >> 14;
 450     matrice[2][1] = (sxa * cya) >> 14;
 451
 452     matrice[0][2] = (((cza * sya) >> 14) * cxa + sza * sxa) >> 14;
 453     matrice[1][2] = (((sza * sya) >> 14) * cxa - cza * sxa) >> 14;
 454     matrice[2][2] = (cxa * cya) >> 14;
 455
 456     /* apply translation matrix to all points */
 457     for (i = 0; i < nb_points; i++)
 458     {
 459         point3D[i].x = matrice[0][0] * sommet[i].x + matrice[1][0] * sommet[i].y
 460                      + matrice[2][0] * sommet[i].z;
 461
 462         point3D[i].y = matrice[0][1] * sommet[i].x + matrice[1][1] * sommet[i].y
 463                      + matrice[2][1] * sommet[i].z;
 464
 465         point3D[i].z = matrice[0][2] * sommet[i].x + matrice[1][2] * sommet[i].y
 466                      + matrice[2][2] * sommet[i].z;
 467     }
 468 }
 469
 470 static void cube_viewport(void)
 471 {
 472     int i;
 473
 474     /* Do viewport transformation for all points */
 475     for (i = 0; i < nb_points; i++)
 476     {
 477 #if ASPECT != 256
 478         point2D[i].x = (point3D[i].x * ASPECT) / (point3D[i].z + (z_off << 14))
 479                      + x_off;
 480 #else
 481         point2D[i].x = (point3D[i].x << 8) / (point3D[i].z + (z_off << 14))
 482                      + x_off;
 483 #endif
 484         point2D[i].y = (point3D[i].y << 8) / (point3D[i].z + (z_off << 14))
 485                      + y_off;
 486     }
 487 }
 488
 489 static void cube_draw(void)
 490 {
 491     int i, j, line;
 492 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 493     unsigned old_foreground;
 494 #endif
 495
 496     switch (mode)
 497     {
 498 #if LCD_DEPTH > 1 || defined(USE_GSLIB)
 499       case SOLID:
 500
 501         old_foreground = MY_GET_FOREGROUND();
 502         for (i = 0; i < 6; i++)
 503         {
 504             /* backface culling; if the shape winds counter-clockwise, we are
 505              * looking at the backface, and the (simplified) cross product
 506              * is < 0. Do not draw it. */
 507             if (0 >= (point2D[faces[i].corner[1]].x - point2D[faces[i].corner[0]].x)
 508                    * (point2D[faces[i].corner[2]].y - point2D[faces[i].corner[1]].y)
 509                    - (point2D[faces[i].corner[1]].y - point2D[faces[i].corner[0]].y)
 510                    * (point2D[faces[i].corner[2]].x - point2D[faces[i].corner[1]].x))
 511                 continue;
 512
 513             MY_SET_FOREGROUND(face_colors[i]);
 514             MY_FILLTRIANGLE(point2D[faces[i].corner[0]].x,
 515                             point2D[faces[i].corner[0]].y,
 516                             point2D[faces[i].corner[1]].x,
 517                             point2D[faces[i].corner[1]].y,
 518                             point2D[faces[i].corner[2]].x,
 519                             point2D[faces[i].corner[2]].y);
 520             MY_FILLTRIANGLE(point2D[faces[i].corner[0]].x,
 521                             point2D[faces[i].corner[0]].y,
 522                             point2D[faces[i].corner[2]].x,
 523                             point2D[faces[i].corner[2]].y,
 524                             point2D[faces[i].corner[3]].x,
 525                             point2D[faces[i].corner[3]].y);
 526
 527         }
 528         MY_SET_FOREGROUND(old_foreground);
 529         break;
 530 #endif /* (LCD_DEPTH > 1) || GSLIB */
 531
 532       case HIDDEN_LINES:
 533
 534         rb->memset(lines_drawn, 0, sizeof(lines_drawn));
 535         for (i = 0; i < 6; i++)
 536         {
 537             /* backface culling; if the shape winds counter-clockwise, we are
 538              * looking at the backface, and the (simplified) cross product
 539              * is < 0. Do not draw it. */
 540             if (0 >= (point2D[faces[i].corner[1]].x - point2D[faces[i].corner[0]].x)
 541                    * (point2D[faces[i].corner[2]].y - point2D[faces[i].corner[1]].y)
 542                    - (point2D[faces[i].corner[1]].y - point2D[faces[i].corner[0]].y)
 543                    * (point2D[faces[i].corner[2]].x - point2D[faces[i].corner[1]].x))
 544                 continue;
 545
 546             for (j = 0; j < 4; j++)
 547             {
 548                 line = faces[i].line[j];
 549                 if (!lines_drawn[line])
 550                 {
 551                     lines_drawn[line] = true;
 552                     MYLCD(drawline)(point2D[lines[line].start].x,
 553                                     point2D[lines[line].start].y,
 554                                     point2D[lines[line].end].x,
 555                                     point2D[lines[line].end].y);
 556                 }
 557             }
 558         }
 559         break;
 560
 561       case WIREFRAME:
 562
 563         for (i = 0; i < 12; i++)
 564             MYLCD(drawline)(point2D[lines[i].start].x,
 565                             point2D[lines[i].start].y,
 566                             point2D[lines[i].end].x,
 567                             point2D[lines[i].end].y);
 568         break;
 569     }
 570 }
 571
 572 void cleanup(void *parameter)
 573 {
 574     (void)parameter;
 575
 576 #ifdef USE_GSLIB
 577     grey_release();
 578 #elif defined HAVE_LCD_CHARCELLS
 579     pgfx_release();
 580 #endif
 581 }
 582
 583 enum plugin_status plugin_start(const void* parameter)
 584 {
 585     char buffer[30];
 586     int t_disp = 0;
 587 #ifdef USE_GSLIB
 588     unsigned char *gbuf;
 589     size_t gbuf_size = 0;
 590     bool mode_switch = true;
 591 #endif
 592
 593     int button;
 594     int lastbutton = BUTTON_NONE;
 595     int curr = 0;
 596     bool highspeed = false;
 597     bool paused = false;
 598     bool redraw = true;
 599     bool exit = false;
 600
 601     (void)(parameter);
 602
 603 #ifdef HAVE_LCD_BITMAP
 604 #if defined(USE_GSLIB)
 605     gbuf = (unsigned char *)rb->plugin_get_buffer(&gbuf_size);
 606     if (!grey_init(gbuf, gbuf_size, GREY_BUFFERED,
 607                    LCD_WIDTH, LCD_HEIGHT, NULL))
 608     {
 609         rb->splash(HZ, "Couldn't init greyscale display");
 610         return PLUGIN_ERROR;
 611     }
 612     /* init lcd_ function pointers */
 613     lcdfuncs.update =        rb->lcd_update;
 614     lcdfuncs.clear_display = rb->lcd_clear_display;
 615     lcdfuncs.drawline =      rb->lcd_drawline;
 616     lcdfuncs.putsxy =        rb->lcd_putsxy;
 617
 618 #ifdef MROBE_100
 619     grey_set_background(GREY_BLACK);
 620 #endif
 621
 622     grey_setfont(FONT_SYSFIXED);
 623 #endif
 624     rb->lcd_setfont(FONT_SYSFIXED);
 625 #else /* LCD_CHARCELLS */
 626     if (!pgfx_init(4, 2))
 627     {
 628         rb->splash(HZ*2, "Old LCD :(");
 629         return PLUGIN_OK;
 630     }
 631     pgfx_display(0, 0);
 632 #endif
 633
 634     while(!exit)
 635     {
 636         if (redraw)
 637         {
 638             MYLCD(clear_display)();
 639             cube_rotate(axes[0].angle, axes[1].angle, axes[2].angle);
 640             cube_viewport();
 641             cube_draw();
 642             redraw = false;
 643         }
 644
 645 #ifdef HAVE_LCD_BITMAP
 646         if (t_disp > 0)
 647         {
 648             t_disp--;
 649             rb->snprintf(buffer, sizeof(buffer), "%s: %d %s",
 650                          axes[curr].label,
 651                          paused ? axes[curr].angle : axes[curr].speed,
 652                          highspeed ? "(hs)" : "");
 653             MYLCD(putsxy)(0, LCD_HEIGHT-8, buffer);
 654             if (t_disp == 0)
 655                 redraw = true;
 656         }
 657 #else
 658         if (t_disp > 0)
 659         {
 660             if (t_disp == DISP_TIME)
 661             {
 662                 rb->lcd_puts(5, 0, axes[curr].label);
 663                 rb->snprintf(buffer, sizeof(buffer), "%d %c",
 664                              paused ? axes[curr].angle : axes[curr].speed,
 665                              highspeed ? 'H' : ' ');
 666                 rb->lcd_puts(5, 1, buffer);
 667             }
 668             t_disp--;
 669             if (t_disp == 0)
 670             {
 671                 rb->lcd_clear_display();
 672                 pgfx_display(0, 0);
 673             }
 674         }
 675 #endif
 676 #ifdef USE_GSLIB
 677         if (mode_switch)
 678         {
 679             grey_show(mode == SOLID);
 680             mode_switch = false;
 681         }
 682 #endif
 683         MYLCD(update)();
 684
 685         if (!paused)
 686         {
 687             int i;
 688
 689             for (i = 0; i < 3; i++)
 690             {
 691                 axes[i].angle += axes[i].speed;
 692                 if (axes[i].angle > 359)
 693                     axes[i].angle -= 360;
 694                 else if (axes[i].angle < 0)
 695                     axes[i].angle += 360;
 696             }
 697             redraw = true;
 698
 699             if (highspeed)
 700                 rb->yield();
 701             else
 702                 rb->sleep(HZ/25);
 703             button = rb->button_get(false);
 704         }
 705         else
 706         {
 707             button = rb->button_get_w_tmo(HZ/25);
 708         }
 709
 710         switch (button)
 711         {
 712             case CUBE_INC:
 713             case CUBE_INC|BUTTON_REPEAT:
 714                 if (!paused)
 715                 {
 716                     if (axes[curr].speed < 10)
 717                         axes[curr].speed++;
 718                 }
 719                 else
 720                 {
 721                     if (++axes[curr].angle > 359)
 722                         axes[curr].angle -= 360;
 723                 }
 724                 t_disp = DISP_TIME;
 725                 redraw = true;
 726                 break;
 727
 728             case CUBE_DEC:
 729             case CUBE_DEC|BUTTON_REPEAT:
 730                 if (!paused)
 731                 {
 732                     if (axes[curr].speed > -10)
 733                         axes[curr].speed--;
 734                 }
 735                 else
 736                 {
 737                     if (--axes[curr].angle < 0)
 738                         axes[curr].angle += 360;
 739                 }
 740                 t_disp = DISP_TIME;
 741                 redraw = true;
 742                 break;
 743
 744             case CUBE_NEXT:
 745                 if (++curr > 2)
 746                     curr = 0;
 747                 t_disp = DISP_TIME;
 748                 break;
 749
 750             case CUBE_PREV:
 751                 if (--curr < 0)
 752                     curr = 2;
 753                 t_disp = DISP_TIME;
 754                 break;
 755
 756             case CUBE_MODE:
 757 #ifdef CUBE_MODE_PRE
 758                 if (lastbutton != CUBE_MODE_PRE)
 759                     break;
 760 #endif
 761                 if (++mode >= NUM_MODES)
 762                     mode = 0;
 763 #ifdef USE_GSLIB
 764                 mylcd = (mode == SOLID) ? &greyfuncs : &lcdfuncs;
 765                 mode_switch = true;
 766 #endif
 767                 redraw = true;
 768                 break;
 769
 770             case CUBE_PAUSE:
 771 #ifdef CUBE_PAUSE_PRE
 772                 if (lastbutton != CUBE_PAUSE_PRE)
 773                     break;
 774 #endif
 775                 paused = !paused;
 776                 break;
 777
 778             case CUBE_HIGHSPEED:
 779 #ifdef CUBE_HIGHSPEED_PRE
 780                 if (lastbutton != CUBE_HIGHSPEED_PRE)
 781                     break;
 782 #endif
 783                 highspeed = !highspeed;
 784                 t_disp = DISP_TIME;
 785                 break;
 786
 787 #ifdef CUBE_RC_QUIT
 788             case CUBE_RC_QUIT:
 789 #endif
 790             case CUBE_QUIT:
 791                 exit = true;
 792                 break;
 793
 794             default:
 795                 if (rb->default_event_handler_ex(button, cleanup, NULL)
 796                     == SYS_USB_CONNECTED)
 797                     return PLUGIN_USB_CONNECTED;
 798                 break;
 799         }
 800         if (button != BUTTON_NONE)
 801             lastbutton = button;
 802     }
 803
 804 #ifdef USE_GSLIB
 805     grey_release();
 806 #elif defined(HAVE_LCD_CHARCELLS)
 807     pgfx_release();
 808 #endif
 809     return PLUGIN_OK;
 810 }
 811
 812