ColorFilterStrategyForeground Class Reference

Leaf class for foreground strategy for ColorFilter. More...

#include <ColorFilterStrategyForeground.h>

Inheritance diagram for ColorFilterStrategyForeground:

Collaboration diagram for ColorFilterStrategyForeground:

Public Member Functions
	ColorFilterStrategyForeground ()
	Single constructor. More...
virtual	~ColorFilterStrategyForeground ()
virtual double	pixelToZeroToOne (const QColor &pixel, QRgb rgbBackground) const
	Return a normalized value of 0 to 1 given input pixel. More...
virtual int	zeroToOneToValue (double s) const
	Return the low value normalized to 0 to 1. More...
Public Member Functions inherited from ColorFilterStrategyAbstractBase
	ColorFilterStrategyAbstractBase ()
	Single constructor. More...
virtual	~ColorFilterStrategyAbstractBase ()

Detailed Description

Leaf class for foreground strategy for ColorFilter.

Definition at line 13 of file ColorFilterStrategyForeground.h.

Constructor & Destructor Documentation

ColorFilterStrategyForeground()

ColorFilterStrategyForeground::ColorFilterStrategyForeground

(

)

Single constructor.

Definition at line 12 of file ColorFilterStrategyForeground.cpp.

{
}

~ColorFilterStrategyForeground()

ColorFilterStrategyForeground::~ColorFilterStrategyForeground ( )

virtual

Definition at line 16 of file ColorFilterStrategyForeground.cpp.

{
}

Member Function Documentation

pixelToZeroToOne()

double ColorFilterStrategyForeground::pixelToZeroToOne ( const QColor &  pixel, QRgb  rgbBackground  ) const

virtual

Return a normalized value of 0 to 1 given input pixel.

Implements ColorFilterStrategyAbstractBase.

Definition at line 20 of file ColorFilterStrategyForeground.cpp.

{
  double distance = qSqrt (pow (double (pixel.red())   - qRed   (rgbBackground), 2) +
                           pow (double (pixel.green()) - qGreen (rgbBackground), 2) +
                           pow (double (pixel.blue())  - qBlue  (rgbBackground), 2));
  return distance / qSqrt (255.0 * 255.0 + 255.0 * 255.0 + 255.0 * 255.0);
}

zeroToOneToValue()

int ColorFilterStrategyForeground::zeroToOneToValue ( double  s ) const

virtual

Return the low value normalized to 0 to 1.

Implements ColorFilterStrategyAbstractBase.

Definition at line 29 of file ColorFilterStrategyForeground.cpp.

{
  return qFloor (FOREGROUND_MIN + s * (FOREGROUND_MAX - FOREGROUND_MIN));
}

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

• Color/ColorFilterStrategyForeground.h
• Color/ColorFilterStrategyForeground.cpp