apps/plugins/fractals/fractal_sets.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 Tomer Shalev
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #ifndef _FRACTAL_SETS_H
  22 #define _FRACTAL_SETS_H
  23
  24 #include "plugin.h"
  25
  26 #if (LCD_DEPTH < 8)
  27 #define USEGSLIB
  28 #include "lib/grey.h"
  29 #else
  30 #include "lib/xlcd.h"
  31 #endif
  32
  33 #include "lib/mylcd.h"
  34
  35 #define DELTA 8 /* Panning moves 1/DELTA of screen */
  36
  37 #define LCD_SHIFT_X (LCD_WIDTH / DELTA)
  38 #define LCD_SHIFT_Y (LCD_HEIGHT / DELTA)
  39
  40 #define X_DELTA(x) (((x) * LCD_WIDTH) / DELTA)
  41 #define Y_DELTA(y) (((y) * LCD_HEIGHT) / DELTA)
  42
  43 struct fractal_rect
  44 {
  45     int px_min;
  46     int py_min;
  47     int px_max;
  48     int py_max;
  49     int valid;
  50 };
  51
  52 struct fractal_ops
  53 {
  54     void (*init)(void);
  55     int (*calc)(struct fractal_rect *rect, int (*button_yield_cb)(void *ctx),
  56             void *button_yield_ctx);
  57     void (*move)(int dx, int dy);
  58     int (*zoom)(int factor);
  59     int (*precision)(int d);
  60 };
  61
  62 #endif