/* at_splines_new_full modifies its 'bitmap' argument
when it does the thin_image thing.
*/
at_spline_list_array_type *
at_splines_new_full(at_bitmap_type * const bitmap,
at_fitting_opts_type * const opts,
at_msg_func msg_func,
void * const msg_data,
at_progress_func notify_progress,
void * const progress_data,
at_testcancel_func test_cancel,
void * const testcancel_data) {
at_spline_list_array_type * retval;
image_header_type image_header;
pixel_outline_list_type pixelOutlineList;
at_exception_type exp;
distance_map_type distanceMap;
bool haveDistMap;
exp = at_exception_new(msg_func, msg_data);
image_header.width = at_bitmap_get_width(bitmap);
image_header.height = at_bitmap_get_height(bitmap);
if (opts->centerline) {
if (opts->preserve_width) {
/* Preserve line width prior to thinning. */
bool const paddedTrue = true;
distanceMap = new_distance_map(*bitmap, 255, paddedTrue, &exp);
haveDistMap = true;
} else
haveDistMap = false;
thin_image(bitmap, opts->backgroundSpec, opts->background_color, &exp);
} else
haveDistMap = false;
if (at_exception_got_fatal(&exp))
retval = NULL;
else {
if (opts->centerline) {
pixel background_color;
if (opts->backgroundSpec)
background_color = opts->background_color;
else
PPM_ASSIGN(background_color, 255, 255, 255);
pixelOutlineList =
find_centerline_pixels(*bitmap, background_color,
notify_progress, progress_data,
test_cancel, testcancel_data, &exp);
} else
pixelOutlineList =
find_outline_pixels(*bitmap,
opts->backgroundSpec,
opts->background_color,
notify_progress, progress_data,
test_cancel, testcancel_data, &exp);
if (at_exception_got_fatal(&exp) ||
(test_cancel && test_cancel(testcancel_data)))
retval = NULL;
else {
at_spline_list_array_type * splinesP;
MALLOCVAR_NOFAIL(splinesP);
fit_outlines_to_splines(pixelOutlineList, opts,
haveDistMap ? &distanceMap : NULL,
image_header.width,
image_header.height,
&exp,
notify_progress, progress_data,
test_cancel, testcancel_data,
splinesP);
if (at_exception_got_fatal(&exp) ||
(test_cancel && test_cancel(testcancel_data)))
retval = NULL;
else {
if (notify_progress)
notify_progress(1.0, progress_data);
retval = splinesP;
}
free_pixel_outline_list(&pixelOutlineList);
}
if (haveDistMap)
free_distance_map(&distanceMap);
}
return retval;
}
/* at_splines_new_full modify its argument: BITMAP
when despeckle, quantize and/or thin_image are invoked. */
at_splines_type *
at_splines_new_full (at_bitmap * bitmap,
at_fitting_opts_type * opts,
at_msg_func msg_func,
gpointer msg_data,
at_progress_func notify_progress,
gpointer progress_data,
at_testcancel_func test_cancel,
gpointer testcancel_data)
{
image_header_type image_header;
at_splines_type * splines = NULL;
pixel_outline_list_type pixels;
QuantizeObj *myQuant = NULL; /* curently not used */
at_exception_type exp = at_exception_new(msg_func, msg_data);
at_distance_map dist_map, *dist = NULL;
#define CANCELP (test_cancel && test_cancel(testcancel_data))
#define FATALP (at_exception_got_fatal(&exp))
#define FREE_SPLINE() do {if (splines) {at_splines_free(splines); splines = NULL;}} while(0)
#define CANCEL_THEN_CLEANUP_DIST() if (CANCELP) goto cleanup_dist;
#define CANCEL_THEN_CLEANUP_PIXELS() if (CANCELP) {FREE_SPLINE(); goto cleanup_pixels;}
#define FATAL_THEN_RETURN() if (FATALP) return splines;
#define FATAL_THEN_CLEANUP_DIST() if (FATALP) goto cleanup_dist;
#define FATAL_THEN_CLEANUP_PIXELS() if (FATALP) {FREE_SPLINE(); goto cleanup_pixels;}
if (opts->despeckle_level > 0)
{
despeckle (bitmap,
opts->despeckle_level,
opts->despeckle_tightness,
opts->noise_removal,
&exp);
FATAL_THEN_RETURN();
}
image_header.width = at_bitmap_get_width(bitmap);
image_header.height = at_bitmap_get_height(bitmap);
if (opts->color_count > 0)
{
quantize (bitmap, opts->color_count, opts->background_color, &myQuant, &exp);
if (myQuant)
quantize_object_free(myQuant); /* curently not used */
FATAL_THEN_RETURN();
}
if (opts->centerline)
{
if (opts->preserve_width)
{
/* Preserve line width prior to thinning. */
dist_map = new_distance_map(bitmap, 255, /*padded=*/TRUE, &exp);
dist = &dist_map;
FATAL_THEN_RETURN();
}
/* Hereafter, dist is allocated. dist must be freed if
the execution is canceled or exception is raised;
use FATAL_THEN_CLEANUP_DIST. */
thin_image (bitmap, opts->background_color, &exp);
FATAL_THEN_CLEANUP_DIST()
}
/* Hereafter, pixels is allocated. pixels must be freed if
the execution is canceled; use CANCEL_THEN_CLEANUP_PIXELS. */
if (opts->centerline)
{
at_color background_color = { 0xff, 0xff, 0xff };
if (opts->background_color)
background_color = *opts->background_color;
pixels = find_centerline_pixels(bitmap, background_color,
notify_progress, progress_data,
test_cancel, testcancel_data, &exp);
}
else
pixels = find_outline_pixels(bitmap, opts->background_color,
notify_progress, progress_data,
test_cancel, testcancel_data, &exp);
FATAL_THEN_CLEANUP_DIST();
CANCEL_THEN_CLEANUP_DIST();
XMALLOC(splines, sizeof(at_splines_type));
*splines = fitted_splines (pixels, opts, dist,
image_header.width,
image_header.height,
&exp,
notify_progress, progress_data,
test_cancel, testcancel_data);
FATAL_THEN_CLEANUP_PIXELS();
CANCEL_THEN_CLEANUP_PIXELS();
if (notify_progress)
notify_progress(1.0, progress_data);
cleanup_pixels:
free_pixel_outline_list (&pixels);
cleanup_dist:
if (dist)
free_distance_map (dist);
return splines;
#undef CANCELP
#undef FATALP
#undef FREE_SPLINE
#undef CANCEL_THEN_CLEANUP_DIST
#undef CANCEL_THEN_CLEANUP_PIXELS
#undef FATAL_THEN_RETURN
#undef FATAL_THEN_CLEANUP_DIST
#undef FATAL_THEN_CLEANUP_PIXELS
}