Method increment_step

deps/tesseract/ccstruct/coutln.cpp:1060–1071

* Helper for ComputeBinaryOffsets. Increments pos, dir_counts, pos_totals * by the step, increment, and vertical step ? x : y position * increment * at step s Mod stepcount respectively. Used to add or subtract the * direction and position to/from accumulators of a small neighbourhood. */

 * direction and position to/from accumulators of a small neighbourhood.
 */
void C_OUTLINE::increment_step(int s, int increment, ICOORD* pos,
                               int* dir_counts, int* pos_totals) const {
  int step_index = Modulo(s, stepcount);
  int dir_index = chain_code(step_index);
  dir_counts[dir_index] += increment;
  ICOORD step_vec = step(step_index);
  if (step_vec.x() == 0)
    pos_totals[dir_index] += pos->x() * increment;
  else
    pos_totals[dir_index] += pos->y() * increment;
  *pos += step_vec;
}

ICOORD C_OUTLINE::chain_step(int chaindir) {
  return step_coords[chaindir % 4];