JImageMask Class Reference

#include <JImageMask.h>

Inheritance diagram for JImageMask:

Public Member Functions
	JImageMask ()
virtual	~JImageMask ()
virtual bool	ContainsPixel (const JCoordinate x, const JCoordinate y) const =0
virtual void	AddPixel (const JCoordinate x, const JCoordinate y)=0
virtual void	RemovePixel (const JCoordinate x, const JCoordinate y)=0

Protected Member Functions
	JImageMask (const JImageMask &source)
void	CalcMask (const JImage &image, const JColorID color)

Detailed Description

Pure virtual base class to represent a mask for an offscreen picture.

Constructor & Destructor Documentation

JImageMask() [1/2]

JImageMask::JImageMask

(

)

~JImageMask()

JImageMask::~JImageMask ( )

virtual

JImageMask() [2/2]

JImageMask::JImageMask ( const JImageMask &  source )

protected

Member Function Documentation

AddPixel()

virtual void JImageMask::AddPixel ( const JCoordinate  x, const JCoordinate  y  )

pure virtual

Implemented in JXImageMask.

CalcMask()

void JImageMask::CalcMask ( const JImage &  image, const JColorID  color  )

protected

We must be the same size as the image.

Note that by comparing system dependent colors instead of JColorIndices, we run in O(W H) instead of O(W H C), where C is the number of colors in the colorManager. The disadvantage is that system colors may be approximate so two colors close together will have the same system value, but different JColorIndices. For masking, this should not be a problem, however, because one usually masks out a color that is very different from the other colors in the image.

ContainsPixel()

virtual bool JImageMask::ContainsPixel ( const JCoordinate  x, const JCoordinate  y  ) const

pure virtual

Implemented in JXImageMask.

RemovePixel()

virtual void JImageMask::RemovePixel ( const JCoordinate  x, const JCoordinate  y  )

pure virtual

Implemented in JXImageMask.

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

• libjcore/code/JImageMask.h
• libjcore/code/JImageMask.cpp