void draw_sine()
{
double i = 0.0;
const double factor = 30.0;
const double size = 16.3;
for (; i < size; i += 1/factor) {
draw_xy(i * factor, (int)(sin(i) * factor), 255, 0, 0);
}
}
int mymain(void)
{
char * p = (char *)BMP_ADDR;
char red, blue, green;
int color;
int i, j;
vga_init();
lcd_init();
lcd_clear_screen(0x000000); // black
draw_xy(0, 0, 0xff0000);
draw_xy(0, 200, 0x00ff00);
draw_xy(300, 0, 0x0000ff);
for (i = -320; i < 320; i++)
for (j = -240; j < 240; j++)
{
double x, y;
int color = 0xff0000;
x = (double)i / (double)150;
y = (double)j / (double)150;
color = get_fratal(x, y);
draw_xy(i, j, color);
//printf("i = %d, j = %d, color = %d \n", i, j, color);
}
while(1);
lcd_draw_hline(100, 100, 640-100, 0xff0000); // red
lcd_draw_hline(200, 100, 640-100, 0x00ff00); // green
lcd_draw_hline(300, 100, 640-100, 0x0000ff); // blue
lcd_draw_hline(400, 100, 640-100, 0xffffff); // white
lcd_draw_vline(640/2, 50, 480-50, 0xffffff); // white
#define POS 50
#define HALF 20
lcd_draw_cross(POS, POS, HALF);
lcd_draw_cross(POS, 640-POS, HALF);
lcd_draw_cross(480-POS, POS, HALF);
lcd_draw_cross(480-POS, 640-POS, HALF);
//while (1);
// show BMP file
// read bmp file
// bmp file header is 54 bytes
p += 54;
for (i = 0; i < 272; i++)
for (j = 0; j < 480; j++)
{
blue = *p++;
green = *p++;
red = *p++;
color = red << 16 | green << 8 | blue << 0;
lcd_draw_pixel(272-i, j, color);
}
while (1);
return 0;
}