function _focal_point_smartcrop_get_best_first_area in Focal Point 7

Calculate the best area to use based on its entropy.

1 call to _focal_point_smartcrop_get_best_first_area()

focal_point_smartcrop_estimation in ./focal_point.smartcrop.inc

Given an image, use smartcrop to estimate a good focal point.

File

./focal_point.smartcrop.inc, line 92

Code

function _focal_point_smartcrop_get_best_first_area($area_entropies, $target_areas_counts) {
  $slices_count = count($area_entropies);
  $best_entropy = -1;
  for ($i = 0; $i <= $slices_count - $target_areas_counts[0]; $i++) {
    for ($j = 0; $j <= $slices_count - $target_areas_counts[1]; $j++) {
      $first_area = array(
        $i,
        $j,
      );
      $entropy = _focal_point_smartcrop_sum_entropies($area_entropies, $first_area, $target_areas_counts);
      if ($entropy > $best_entropy) {
        $best_entropy = $entropy;
        $best_first_area = $first_area;
      }
    }
  }
  return $best_first_area;
}