BLOCK_RECT_IT Class Reference

#include <pdblock.h>

Public Member Functions
	BLOCK_RECT_IT (PDBLK *blkptr)
void	set_to_block (PDBLK *blkptr)
	start (new) block More...
void	start_block ()
	start iteration More...
void	forward ()
	next rectangle More...
BOOL8	cycled_rects ()
	test end More...
void	bounding_box (ICOORD &bleft, ICOORD &tright)

Detailed Description

Definition at line 102 of file pdblock.h.

Constructor & Destructor Documentation

BLOCK_RECT_IT()

BLOCK_RECT_IT::BLOCK_RECT_IT

(

PDBLK *

blkptr

)

constructor

Parameters

blkptr

block to iterate

Definition at line 259 of file pdblock.cpp.

 :left_it (&blkptr->leftside), right_it (&blkptr->rightside) {
  block = blkptr;                //remember block
                                 //non empty list
  if (!blkptr->leftside.empty ()) {
    start_block();  //ready for iteration
  }
}

Member Function Documentation

bounding_box()

void BLOCK_RECT_IT::bounding_box ( ICOORD &  bleft, ICOORD &  tright  )

inline

current rectangle

Parameters

bleft	bottom left
tright	top right

Definition at line 127 of file pdblock.h.

                                      {
                                 //bottom left
      bleft = ICOORD (left_it.data ()->x (), ymin);
                                 //top right
      tright = ICOORD (right_it.data ()->x (), ymax);
    }

cycled_rects()

BOOL8 BLOCK_RECT_IT::cycled_rects ( )

inline

test end

Definition at line 120 of file pdblock.h.

                         {
      return left_it.cycled_list () && right_it.cycled_list ();
    }

forward()

void BLOCK_RECT_IT::forward

(

)

next rectangle

Definition at line 313 of file pdblock.cpp.

                            {  //next rectangle
  if (!left_it.empty ()) {       //non-empty list
    if (left_it.data_relative (1)->y () == ymax)
      left_it.forward ();        //move to meet top
    if (right_it.data_relative (1)->y () == ymax)
      right_it.forward ();
                                 //last is special
    if (left_it.at_last () || right_it.at_last ()) {
      left_it.move_to_first ();  //restart
      right_it.move_to_first ();
                                 //now at bottom
      ymin = left_it.data ()->y ();
    }
    else {
      ymin = ymax;               //new bottom
    }
                                 //next point
    ymax = left_it.data_relative (1)->y ();
    if (right_it.data_relative (1)->y () < ymax)
                                 //least step forward
      ymax = right_it.data_relative (1)->y ();
  }
}

set_to_block()

void BLOCK_RECT_IT::set_to_block

(

PDBLK *

blkptr

)

start (new) block

Definition at line 277 of file pdblock.cpp.

                                                {  //block to start
  block = blkptr;                //remember block
                                 //set iterators
  left_it.set_to_list (&blkptr->leftside);
  right_it.set_to_list (&blkptr->rightside);
  if (!blkptr->leftside.empty ())
    start_block();  //ready for iteration
}

start_block()

void BLOCK_RECT_IT::start_block

(

)

start iteration

Definition at line 294 of file pdblock.cpp.

                                {  //start (new) block
  left_it.move_to_first ();
  right_it.move_to_first ();
  left_it.mark_cycle_pt ();
  right_it.mark_cycle_pt ();
  ymin = left_it.data ()->y ();  //bottom of first box
  ymax = left_it.data_relative (1)->y ();
  if (right_it.data_relative (1)->y () < ymax)
                                 //smallest step
    ymax = right_it.data_relative (1)->y ();
}

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

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