void StepMotor::singleStep(bool fwd) {
if (fwd) {
phase++;
if (phase==8) {
phase=0;
}
}
else {
phase--;
if (phase==-1) {
phase=7;
}
}
energize();
}
int
main (int argc, char *argv[])
{
/* Process command line arguments */
if (argc != 2)
{
fprintf (stderr, "Usage: %s <image path>\n", argv[0]);
return (EXIT_FAILURE);
}
char *image_path = argv[1];
/* Initialize subsystems */
atexit (quit);
if (SDL_Init (SDL_INIT_VIDEO))
{
fprintf (stderr, "Could not initialize SDL: %s\n", SDL_GetError ());
return (EXIT_FAILURE);
}
char title[FILENAME_MAX];
sprintf (title, "seamless - %s", image_path);
SDL_WM_SetCaption (title, title);
if (IMG_Init (0))
{
fprintf (stderr, "Could not initialize SDL_image: %s\n",
IMG_GetError ());
return (EXIT_FAILURE);
}
/* Prepare drawing */
SDL_Surface *image = IMG_Load (image_path);
if (!image)
{
fprintf (stderr, "Could not load image %s: %s\n", image_path,
IMG_GetError ());
return (EXIT_FAILURE);
}
SDL_Surface *screen =
SDL_SetVideoMode (image->w, image->h, image->format->BitsPerPixel,
SDL_SWSURFACE);
if (!screen)
{
fprintf (stderr, "Could not set video mode: %s\n", SDL_GetError ());
return (EXIT_FAILURE);
}
/* Main loop */
bool running = true;
Uint32 black = SDL_MapRGB (screen->format, 0, 0, 0);
SDL_Event event;
float *array;
char *pred;
SDL_Surface *original;
while (running)
{
while (SDL_PollEvent (&event))
{
switch (event.type)
{
case SDL_QUIT:
running = false;
break;
case SDL_KEYDOWN:
switch (event.key.keysym.sym)
{
case SDLK_q:
case SDLK_ESCAPE:
running = 0;
break;
case SDLK_RETURN:
for (int i = 0; i < 50; ++i)
{
array = energize (image, steepest_neighbor);
pred = dynamic_program (array, image->w, image->h);
original = image;
image = remove_seam (original,
min_pixel (array, original->w, original->h), pred);
SDL_FreeSurface (original);
free (array);
free (pred);
}
break;
default:
break;
}
}
}
SDL_FillRect (screen, NULL, black);
SDL_BlitSurface (image, NULL, screen, NULL);
SDL_Flip (screen);
}
return (EXIT_SUCCESS);
}