/******************************************************************************

 *

 * File:         gradechop.cpp  (Formerly gradechop.c)

 * Description:

 * Author:       Mark Seaman, OCR Technology

 *

 * (c) Copyright 1987, Hewlett-Packard Company.

 ** Licensed under the Apache License, Version 2.0 (the "License");

 ** you may not use this file except in compliance with the License.

 ** You may obtain a copy of the License at

 ** http://www.apache.org/licenses/LICENSE-2.0

 ** Unless required by applicable law or agreed to in writing, software

 ** distributed under the License is distributed on an "AS IS" BASIS,

 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 ** See the License for the specific language governing permissions and

 ** limitations under the License.

 *

 *****************************************************************************/

/*----------------------------------------------------------------------

              I n c l u d e s

----------------------------------------------------------------------*/

#include <algorithm>

#include <cmath>

#include "chop.h"

#include "wordrec.h"

/*----------------------------------------------------------------------

              M a c r o s

----------------------------------------------------------------------*/

namespace tesseract {

/*----------------------------------------------------------------------

              F u n c t i o n s

----------------------------------------------------------------------*/

/**********************************************************************

 * grade_split_length

 *

 * Return a grade for the length of this split.

 *   0    =  "perfect"

 *   100  =  "no way jay"

 **********************************************************************/

PRIORITY Wordrec::grade_split_length(SPLIT *split) {

  PRIORITY grade;

  float split_length;

  split_length = split->point1->WeightedDistance(*split->point2, chop_x_y_weight);

  if (split_length <= 0) {

    grade = 0;

  } else {

    grade = std::sqrt(split_length) * chop_split_dist_knob;

  }

  return (std::max(0.0f, grade));

}

/**********************************************************************

 * grade_sharpness

 *

 * Return a grade for the sharpness of this split.

 *   0    =  "perfect"

 *   100  =  "no way jay"

 **********************************************************************/

PRIORITY Wordrec::grade_sharpness(SPLIT *split) {

  PRIORITY grade;

  grade = point_priority(split->point1) + point_priority(split->point2);

  if (grade < -360.0) {

    grade = 0;

  } else {

    grade += 360.0;

  }

  grade *= chop_sharpness_knob; /* Values 0 to -360 */

  return (grade);

}

} // namespace tesseract