olutil.cpp File Reference

#include "olutil.h"
#include "structures.h"
#include "blobs.h"
#include "const.h"

Go to the source code of this file.

Functions
void	correct_blob_order (TBLOB *blob1, TBLOB *blob2)
void	eliminate_duplicate_outlines (TBLOB *blob)
void	setup_blob_outlines (TBLOB *blob)

Function Documentation

void correct_blob_order	(	TBLOB *	blob1,
		TBLOB *	blob2
	)

Definition at line 46 of file olutil.cpp.

                                                    { 
  TPOINT origin1;
  TPOINT origin2;
  TESSLINE *temp;

  blob_origin(blob1, &origin1); 
  blob_origin(blob2, &origin2); 

  if (origin1.x > origin2.x) {
    temp = blob2->outlines;
    blob2->outlines = blob1->outlines;
    blob1->outlines = temp;
  }
}

void eliminate_duplicate_outlines

(

TBLOB *

blob

)

Definition at line 67 of file olutil.cpp.

                                               { 
  TESSLINE *outline;
  TESSLINE *other_outline;
  TESSLINE *last_outline;

  for (outline = blob->outlines; outline; outline = outline->next) {

    for (last_outline = outline, other_outline = outline->next;
      other_outline;
    last_outline = other_outline, other_outline = other_outline->next) {

      if (same_outline_bounds (outline, other_outline)) {
        last_outline->next = other_outline->next;
        // This doesn't leak - the outlines share the EDGEPTs.
        other_outline->loop = NULL;
        delete other_outline;
        other_outline = last_outline;
        // If it is part of a cut, then it can't be a hole any more.
        outline->is_hole = false;
      }
    }
  }
}

void setup_blob_outlines

(

TBLOB *

blob

)

Definition at line 96 of file olutil.cpp.

                                      { 
  TESSLINE *outline;

  for (outline = blob->outlines; outline; outline = outline->next) {
    outline->ComputeBoundingBox();
  }
}