TBLOB *make_tess_blob( //make tess blob
PBLOB *blob, //blob to convert
BOOL8 flatten //flatten outline structure
) {
inT32 index;
TBLOB *tessblob;
tessblob = newblob ();
tessblob->outlines = (struct olinestruct *)
make_tess_outlines (blob->out_list (), flatten);
for (index = 0; index < TBLOBFLAGS; index++)
tessblob->flags[index] = 0; //!!
tessblob->correct = 0;
tessblob->guess = 0;
for (index = 0; index < MAX_WO_CLASSES; index++) {
tessblob->classes[index] = 0;
tessblob->values[index] = 0;
}
tessblob->next = NULL;
return tessblob;
}
/**********************************************************************
* attempt_blob_chop
*
* Try to split the this blob after this one. Check to make sure that
* it was successful.
**********************************************************************/
SEAM *attempt_blob_chop(TWERD *word, INT32 blob_number, SEAMS seam_list) {
TBLOB *blob;
TBLOB *other_blob;
SEAM *seam;
TBLOB *last_blob;
TBLOB *next_blob;
INT16 x;
if (first_pass)
chops_attempted1++;
else
chops_attempted2++;
last_blob = NULL;
blob = word->blobs;
for (x = 0; x < blob_number; x++) {
last_blob = blob;
blob = blob->next;
}
next_blob = blob->next;
if (repair_unchopped_blobs)
preserve_outline_tree (blob->outlines);
other_blob = newblob (); /* Make new blob */
other_blob->next = blob->next;
other_blob->outlines = NULL;
blob->next = other_blob;
seam = pick_good_seam (blob);
if (chop_debug) {
if (seam != NULL) {
print_seam ("Good seam picked=", seam);
}
else
cprintf ("\n** no seam picked *** \n");
}
if (seam) {
apply_seam(blob, other_blob, seam);
}
if ((seam == NULL) ||
(blob->outlines == NULL) ||
(other_blob->outlines == NULL) ||
total_containment (blob, other_blob) ||
check_blob (other_blob) ||
!(check_seam_order (blob, seam) &&
check_seam_order (other_blob, seam)) ||
any_shared_split_points (seam_list, seam) ||
!test_insert_seam(seam_list, blob_number, blob, word->blobs)) {
blob->next = next_blob;
if (seam) {
undo_seam(blob, other_blob, seam);
delete_seam(seam);
#ifndef GRAPHICS_DISABLED
if (chop_debug) {
display_blob(blob, Red);
cprintf ("\n** seam being removed ** \n");
}
#endif
}
else {
oldblob(other_blob);
}
if (repair_unchopped_blobs)
restore_outline_tree (blob->outlines);
return (NULL);
}
return (seam);
}
