TPOINT Struct Reference

#include <blobs.h>

Public Member Functions
	TPOINT ()
	TPOINT (int16_t vx, int16_t vy)
	TPOINT (const ICOORD &ic)
void	operator+= (const TPOINT &other)
void	operator/= (int divisor)
bool	operator== (const TPOINT &other) const
void	diff (const TPOINT &p1, const TPOINT &p2)
int	cross (const TPOINT &other) const
int	dot (const TPOINT &other) const
int	length () const

Static Public Member Functions
static bool	IsCrossed (const TPOINT &a0, const TPOINT &a1, const TPOINT &b0, const TPOINT &b1)

Public Attributes
int16_t	x
int16_t	y

Detailed Description

Definition at line 49 of file blobs.h.

Constructor & Destructor Documentation

TPOINT() [1/3]

TPOINT::TPOINT ( )

inline

Definition at line 50 of file blobs.h.

{

TPOINT() [2/3]

TPOINT::TPOINT ( int16_t  vx, int16_t  vy  )

inline

Definition at line 51 of file blobs.h.

: x(0), y(0) {}

TPOINT() [3/3]

TPOINT::TPOINT ( const ICOORD &  ic )

inline

Definition at line 52 of file blobs.h.

: x(vx), y(vy) {}

Member Function Documentation

cross()

int TPOINT::cross ( const TPOINT &  other ) const

inline

Definition at line 77 of file blobs.h.

                                       {
    return x * other.y - y * other.x;

diff()

void TPOINT::diff ( const TPOINT &  p1, const TPOINT &  p2  )

inline

Definition at line 71 of file blobs.h.

                                                {
    x = p1.x - p2.x;
    y = p1.y - p2.y;

dot()

int TPOINT::dot ( const TPOINT &  other ) const

inline

Definition at line 82 of file blobs.h.

                                     {
    return x * other.x + y * other.y;

IsCrossed()

bool TPOINT::IsCrossed ( const TPOINT &  a0, const TPOINT &  a1, const TPOINT &  b0, const TPOINT &  b1  )

static

Definition at line 65 of file blobs.cpp.

                                         {
  TPOINT b0a1, b0a0, a1b1, b0b1, a1a0;
 
  b0a1.x = a1.x - b0.x;
  b0a0.x = a0.x - b0.x;
  a1b1.x = b1.x - a1.x;
  b0b1.x = b1.x - b0.x;
  a1a0.x = a0.x - a1.x;
  b0a1.y = a1.y - b0.y;
  b0a0.y = a0.y - b0.y;
  a1b1.y = b1.y - a1.y;
  b0b1.y = b1.y - b0.y;
  a1a0.y = a0.y - a1.y;
 
  int b0a1xb0b1 = b0a1.cross(b0b1);
  int b0b1xb0a0 = b0b1.cross(b0a0);
  int a1b1xa1a0 = a1b1.cross(a1a0);
  // For clarity, we want a1a0.cross(a1b0) here but we have b0a1 instead of a1b0
  // so use -a1b0.cross(b0a1) instead, which is the same.
  int a1a0xa1b0 = -a1a0.cross(b0a1);
 
  return ((b0a1xb0b1 > 0 && b0b1xb0a0 > 0) ||
          (b0a1xb0b1 < 0 && b0b1xb0a0 < 0)) &&
         ((a1b1xa1a0 > 0 && a1a0xa1b0 > 0) || (a1b1xa1a0 < 0 && a1a0xa1b0 < 0));
}

length()

int TPOINT::length ( ) const

inline

Definition at line 87 of file blobs.h.

                     {
    return x * x + y * y;

operator+=()

void TPOINT::operator+= ( const TPOINT &  other )

inline

Definition at line 54 of file blobs.h.

                                       {
    x += other.x;
    y += other.y;

operator/=()

void TPOINT::operator/= ( int  divisor )

inline

Definition at line 58 of file blobs.h.

                               {
    x /= divisor;
    y /= divisor;

operator==()

bool TPOINT::operator== ( const TPOINT &  other ) const

inline

Definition at line 62 of file blobs.h.

                                             {
    return x == other.x && y == other.y;

Member Data Documentation

x

int16_t TPOINT::x

Definition at line 91 of file blobs.h.

y

int16_t TPOINT::y

Definition at line 92 of file blobs.h.

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

• /tesseract/src/ccstruct/blobs.h
• /tesseract/src/ccstruct/blobs.cpp