PBLOB *rotate_cblob( //rotate it
C_BLOB *blob, //blob to search
float xheight, //for poly approx
FCOORD rotation //for landscape
) {
PBLOB *copy; //copy of blob
POLYPT *polypt; //current point
OUTLINE_IT out_it;
POLYPT_IT poly_it; //outline pts
copy = new PBLOB (blob, xheight);
out_it.set_to_list (copy->out_list ());
for (out_it.mark_cycle_pt (); !out_it.cycled_list (); out_it.forward ()) {
//get points
poly_it.set_to_list (out_it.data ()->polypts ());
for (poly_it.mark_cycle_pt (); !poly_it.cycled_list ();
poly_it.forward ()) {
polypt = poly_it.data ();
//rotate it
polypt->pos.rotate (rotation);
polypt->vec.rotate (rotation);
}
out_it.data ()->compute_bb ();
}
return copy;
}
PBLOB *rotate_blob( //get y limits
PBLOB *blob, //blob to search
FCOORD rotation //vector to rotate by
) {
PBLOB *copy; //copy of blob
POLYPT *polypt; //current point
OUTLINE_IT out_it;
POLYPT_IT poly_it; //outline pts
copy = new PBLOB;
*copy = *blob; //deep copy
out_it.set_to_list (copy->out_list ());
for (out_it.mark_cycle_pt (); !out_it.cycled_list (); out_it.forward ()) {
//get points
poly_it.set_to_list (out_it.data ()->polypts ());
for (poly_it.mark_cycle_pt (); !poly_it.cycled_list ();
poly_it.forward ()) {
polypt = poly_it.data ();
//rotate it
polypt->pos.rotate (rotation);
polypt->vec.rotate (rotation);
}
out_it.data ()->compute_bb ();
}
return copy;
}
