Tesseract  3.02
QUAD_COEFFS Class Reference

#include <quadratc.h>

List of all members.

Public Member Functions

 QUAD_COEFFS ()
 QUAD_COEFFS (double xsq, float x, float constant)
float y (float x) const
void move (ICOORD vec)

Public Attributes

double a
float b
float c

Detailed Description

Definition at line 25 of file quadratc.h.


Constructor & Destructor Documentation

QUAD_COEFFS::QUAD_COEFFS ( ) [inline]

Definition at line 28 of file quadratc.h.

                  {
    }                            //empty constructor
QUAD_COEFFS::QUAD_COEFFS ( double  xsq,
float  x,
float  constant 
) [inline]

Definition at line 30 of file quadratc.h.

                                {
      a = xsq;
      b = x;
      c = constant;
    }

Member Function Documentation

void QUAD_COEFFS::move ( ICOORD  vec) [inline]

Definition at line 44 of file quadratc.h.

                          {  // by vector
      /************************************************************
        y - q = a (x - p)^2 + b (x - p) + c
        y - q = ax^2 - 2apx + ap^2 + bx - bp + c
          y = ax^2 + (b - 2ap)x + (c - bp + ap^2 + q)
      ************************************************************/
      inT16 p = vec.x ();
      inT16 q = vec.y ();

      c = (float) (c - b * p + a * p * p + q);
      b = (float) (b - 2 * a * p);
    }
float QUAD_COEFFS::y ( float  x) const [inline]

Definition at line 39 of file quadratc.h.

                           {  //at x
      return (float) ((a * x + b) * x + c);
    }

Member Data Documentation

Definition at line 58 of file quadratc.h.

Definition at line 59 of file quadratc.h.

Definition at line 60 of file quadratc.h.


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