olutil.h File Reference

#include "blobs.h"

Go to the source code of this file.

Macros
#define	is_inside_angle(pt)   (angle_change ((pt)->prev, (pt), (pt)->next) < chop_inside_angle)
#define	same_outline_bounds(outline, other_outline)
#define	weighted_edgept_dist(p1, p2, chop_x_y_weight)

Functions
void	correct_blob_order (TBLOB *blob1, TBLOB *blob2)
void	eliminate_duplicate_outlines (TBLOB *blob)
void	setup_blob_outlines (TBLOB *blob)

Macro Definition Documentation

#define is_inside_angle

(

pt

)

(angle_change ((pt)->prev, (pt), (pt)->next) < chop_inside_angle)

Definition at line 45 of file olutil.h.

#define same_outline_bounds	(		outline,
			other_outline
	)

Value:

(outline->topleft.x  == other_outline->topleft.x  && \
        outline->topleft.y  == other_outline->topleft.y  && \
        outline->botright.x == other_outline->botright.x && \
        outline->botright.y == other_outline->botright.y)   \

Definition at line 54 of file olutil.h.

#define weighted_edgept_dist	(		p1,
			p2,
			chop_x_y_weight
	)

Value:

(((p1)->pos.x - (p2)->pos.x) *                \
        ((p1)->pos.x - (p2)->pos.x) * chop_x_y_weight +  \
        ((p1)->pos.y - (p2)->pos.y) *               \
        ((p1)->pos.y - (p2)->pos.y))

Definition at line 67 of file olutil.h.

Function Documentation

void correct_blob_order	(	TBLOB *	blob1,
		TBLOB *	blob2
	)

Definition at line 46 of file olutil.cpp.

                                                    { 
  TPOINT origin1;
  TPOINT origin2;
  TESSLINE *temp;

  blob_origin(blob1, &origin1); 
  blob_origin(blob2, &origin2); 

  if (origin1.x > origin2.x) {
    temp = blob2->outlines;
    blob2->outlines = blob1->outlines;
    blob1->outlines = temp;
  }
}

void eliminate_duplicate_outlines

(

TBLOB *

blob

)

Definition at line 67 of file olutil.cpp.

                                               { 
  TESSLINE *outline;
  TESSLINE *other_outline;
  TESSLINE *last_outline;

  for (outline = blob->outlines; outline; outline = outline->next) {

    for (last_outline = outline, other_outline = outline->next;
      other_outline;
    last_outline = other_outline, other_outline = other_outline->next) {

      if (same_outline_bounds (outline, other_outline)) {
        last_outline->next = other_outline->next;
        // This doesn't leak - the outlines share the EDGEPTs.
        other_outline->loop = NULL;
        delete other_outline;
        other_outline = last_outline;
        // If it is part of a cut, then it can't be a hole any more.
        outline->is_hole = false;
      }
    }
  }
}

void setup_blob_outlines

(

TBLOB *

blob

)

Definition at line 96 of file olutil.cpp.

                                      { 
  TESSLINE *outline;

  for (outline = blob->outlines; outline; outline = outline->next) {
    outline->ComputeBoundingBox();
  }
}