Nyaaori/rockbox
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Fractals: Use more colors

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24265 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Tomer Shalev 2010-01-17 21:21:52 +00:00
parent ab450a81ec
commit d812362905
1 changed files with 13 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

26
apps/plugins/fractals/mandelbrot_set.c
View file

@ -30,25 +30,23 @@ static unsigned char imgbuffer[LCD_HEIGHT];
static fb_data imgbuffer[LCD_HEIGHT];
#endif
#define NUM_COLORS 8 /* Must be a power of 2 */
/* NUM_COLORS entries cyclical, last entry is black (convergence) */
#define NUM_COLORS ((unsigned)(1 << LCD_DEPTH))
/*
* Spread iter's colors over color range.
* 345 (=15*26-45) is max_iter maximal value
* This implementation ignores pixel format, thus it is not uniformly spread
*/
#define LCOLOR(iter) ((iter * NUM_COLORS) / 345)
#ifdef HAVE_LCD_COLOR
static const fb_data color[NUM_COLORS] = {
LCD_RGBPACK(255, 0, 159), LCD_RGBPACK(159, 0, 255),
LCD_RGBPACK(0, 0, 255), LCD_RGBPACK(0, 159, 255),
LCD_RGBPACK(0, 255, 128), LCD_RGBPACK(128, 255, 0),
LCD_RGBPACK(255, 191, 0), LCD_RGBPACK(255, 0, 0)
};
#define COLOR(iter) (fb_data)LCOLOR(iter)
#define CONVERGENCE_COLOR LCD_RGBPACK(0, 0, 0)
#else /* greyscale */
static const unsigned char color[NUM_COLORS] = {
255, 223, 191, 159, 128, 96, 64, 32
};
#define COLOR(iter) (unsigned char)LCOLOR(iter)
#define CONVERGENCE_COLOR 0
#endif
#define COLOR(iter) color[(iter) % (NUM_COLORS - 1)]
#if CONFIG_LCD == LCD_SSD1815
/* Recorder, Ondio: pixel_height == 1.25 * pixel_width */
#define MB_HEIGHT (LCD_HEIGHT*5/4)
@ -389,7 +387,9 @@ static int mandelbrot_zoom(int factor)
res = recalc_parameters();
if (res) /* zoom not possible, revert */
{
mandelbrot_zoom(-factor);
}
return res;
}