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