BLOCK_LINE_IT Class Reference

rectangle iterator More...

#include <pdblock.h>

Public Member Functions
	BLOCK_LINE_IT (PDBLK *blkptr)
void	set_to_block (PDBLK *blkptr)
int16_t	get_line (int16_t y, int16_t &xext)

Detailed Description

rectangle iterator

Definition at line 144 of file pdblock.h.

Constructor & Destructor Documentation

BLOCK_LINE_IT()

BLOCK_LINE_IT::BLOCK_LINE_IT ( PDBLK *  blkptr )

inline

constructor

Parameters

blkptr

from block

Definition at line 149 of file pdblock.h.

    :rect_it (blkptr) {
      block = blkptr;            //remember block
    }

Member Function Documentation

get_line()

int16_t BLOCK_LINE_IT::get_line	(	int16_t	y,
		int16_t &	xext
	)

get a line

Parameters

y	line to get
xext	output extent

Definition at line 345 of file pdblock.cpp.

                               {
  ICOORD bleft;                  //bounding box
  ICOORD tright;                 //of block & rect

                                 //get block box
  block->bounding_box (bleft, tright);
  if (y < bleft.y () || y >= tright.y ()) {
    //              block->print(stderr,FALSE);
    BADBLOCKLINE.error ("BLOCK_LINE_IT::get_line", ABORT, "Y=%d", y);
  }

                                 //get rectangle box
  rect_it.bounding_box (bleft, tright);
                                 //inside rectangle
  if (y >= bleft.y () && y < tright.y ()) {
                                 //width of line
    xext = tright.x () - bleft.x ();
    return bleft.x ();           //start of line
  }
  for (rect_it.start_block (); !rect_it.cycled_rects (); rect_it.forward ()) {
                                 //get rectangle box
    rect_it.bounding_box (bleft, tright);
                                 //inside rectangle
    if (y >= bleft.y () && y < tright.y ()) {
                                 //width of line
      xext = tright.x () - bleft.x ();
      return bleft.x ();         //start of line
    }
  }
  LOSTBLOCKLINE.error ("BLOCK_LINE_IT::get_line", ABORT, "Y=%d", y);
  return 0;                      //dummy to stop warning
}

set_to_block()

void BLOCK_LINE_IT::set_to_block ( PDBLK *  blkptr )

inline

start (new) block

Parameters

blkptr

block to start

Definition at line 156 of file pdblock.h.

                                       {
      block = blkptr;            //remember block
                                 //set iterator
      rect_it.set_to_block (blkptr);
    }

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The documentation for this class was generated from the following files:

• /home/stweil/src/github/tesseract-ocr/tesseract/ccstruct/pdblock.h
• /home/stweil/src/github/tesseract-ocr/tesseract/ccstruct/pdblock.cpp