CColorScaleBiLog Class Reference

#include <CColorScale.h>

Inheritance diagram for CColorScaleBiLog:

Collaboration diagram for CColorScaleBiLog:

Public Member Functions
	CColorScaleBiLog ()
virtual void	finishAutomaticParameterCalculation ()
virtual QColor	getColor (const C_FLOAT64 &number)
virtual void	passValue (const C_FLOAT64 &number)
void	setMaxIntensityPoint (const C_FLOAT64 &n)
void	setWhitepoint (const C_FLOAT64 &n)
virtual void	startAutomaticParameterCalculation ()
Public Member Functions inherited from CColorScale
	CColorScale ()
bool	isUsed () const
void	setIsUsed (bool f)
virtual	~CColorScale ()

Protected Attributes
C_FLOAT64	m1
C_FLOAT64	m2
C_FLOAT64	mFloat
C_INT32	mInt

Detailed Description

Definition at line 183 of file CColorScale.h.

Constructor & Destructor Documentation

CColorScaleBiLog::CColorScaleBiLog

(

)

Definition at line 206 of file CColorScale.cpp.

    : m1(-6.0),
    m2(2.0),
    mFloat(0.0),
    mInt(0)
{}

Member Function Documentation

void CColorScaleBiLog::finishAutomaticParameterCalculation ( )

virtual

this finishes the calculation of the scaling parameters.

Reimplemented from CColorScale.

Definition at line 287 of file CColorScale.cpp.

References m1, m2, mFloat, and mInt.

{
  if (mInt != 0)
    m1 = (mFloat / mInt) - 4;
  else
    m1 = -4.0;

  m2 -= 1.0;
}

QColor CColorScaleBiLog::getColor ( const C_FLOAT64 &  number )

virtual

this method maps a number to a color.

Implements CColorScale.

Definition at line 214 of file CColorScale.cpp.

References C_FLOAT64, m1, and m2.

{
  C_FLOAT64 logtmp = log(fabs(number));

  C_FLOAT64 tmp = (logtmp - m1) / (m2 - m1); //scale to 0..1

  if (tmp > 1) tmp = 1;

  if (tmp < 0) tmp = 0;

  if (number > 0)
    tmp = 0.5 + tmp * 0.5;
  else
    tmp = 0.5 - tmp * 0.5;

  int r = 0;
  int g = 0;
  int b = 0;

  if (tmp != tmp)
    {
      r = 85;
      g = 85;
      b = 135;
    }
  else if (tmp < 0.5)
    {
      r = 255;
      g = (int)(255 + (tmp - 0.5) * 260);
      b = (int)(255 + (tmp - 0.5) * 260);
    }
  else
    {
      r = (int)(255 - (tmp - 0.5) * 260);
      g = 255;
      b = (int)(255 - (tmp - 0.5) * 260);
    }

  QColor color(r, g, b);
  return color;
}

void CColorScaleBiLog::passValue ( const C_FLOAT64 &  )

virtual

with this method numbers are passed to the automatic scaling algorithm.

Reimplemented from CColorScale.

Definition at line 266 of file CColorScale.cpp.

References C_FLOAT64, m1, m2, max, mFloat, and mInt.

{
  if (number != number) return; //NaN

  if (fabs(number) >= std::numeric_limits< C_FLOAT64 >::max()) return; //Inf

  if (number == 0.0) return;

  C_FLOAT64 tmp = log(fabs(number));

  //minmax
  if (tmp > m2) m2 = tmp;

  if (tmp < m1) m1 = tmp;

  //average
  ++mInt;
  mFloat += tmp;
}

void CColorScaleBiLog::setMaxIntensityPoint

(

const C_FLOAT64 &

n

)

Definition at line 299 of file CColorScale.cpp.

References m2.

{m2 = log(n);}

void CColorScaleBiLog::setWhitepoint

(

const C_FLOAT64 &

n

)

Definition at line 297 of file CColorScale.cpp.

References m1.

{m1 = log(n);}

void CColorScaleBiLog::startAutomaticParameterCalculation ( )

virtual

this method starts the calculation of the scaling parameters.

Reimplemented from CColorScale.

Definition at line 257 of file CColorScale.cpp.

References m1, m2, max, mFloat, and mInt.

{
  m1 = std::numeric_limits< C_FLOAT64 >::max();
  m2 = -std::numeric_limits< C_FLOAT64 >::max();
  mFloat = 0.0;
  mInt = 0;
}

Member Data Documentation

C_FLOAT64 CColorScaleBiLog::m1

protected

Definition at line 205 of file CColorScale.h.

Referenced by finishAutomaticParameterCalculation(), getColor(), passValue(), setWhitepoint(), and startAutomaticParameterCalculation().

C_FLOAT64 CColorScaleBiLog::m2

protected

Definition at line 206 of file CColorScale.h.

Referenced by finishAutomaticParameterCalculation(), getColor(), passValue(), setMaxIntensityPoint(), and startAutomaticParameterCalculation().

C_FLOAT64 CColorScaleBiLog::mFloat

protected

Definition at line 208 of file CColorScale.h.

Referenced by finishAutomaticParameterCalculation(), passValue(), and startAutomaticParameterCalculation().

C_INT32 CColorScaleBiLog::mInt

protected

Definition at line 209 of file CColorScale.h.

Referenced by finishAutomaticParameterCalculation(), passValue(), and startAutomaticParameterCalculation().

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

• CColorScale.h
• CColorScale.cpp