Brief description of class still missing. More...

#include <ColorPaletteData.h>

Public Member Functions
void	allocate (int n)
QColor &	color (int i) const
QColor &	color (double val) const
void	colorHSVInterpole (int imin, int imax)
	ColorPaletteData ()
	ColorPaletteData (const ColorPaletteData &o)
void	colorRGBInterpole (int imin, int imax)
int	count () const
void	defaultBW (int n, int transparency)
void	defaultHSVColors (int sat, int value, int n, int transparency)
void	defaultRGBColors (int n, int transparency)
int	index (double val) const
double	lowerValue (int i) const
bool	operator!= (const ColorPaletteData &o) const
bool	operator== (const ColorPaletteData &o) const
void	setColor (int i, const QColor &c) const
void	setUpperValue (int i, double v)
void	setVLinear (double min, double max)
void	setVLinear (int imin, int imax, double min, double max)
void	setVLog (double min, double max)
void	setVLog (int imin, int imax, double min, double max)
double	upperValue (int i) const
	~ColorPaletteData ()

Detailed Description

Brief description of class still missing.

Full description of class still missing

Constructor & Destructor Documentation

QGpGuiTools::ColorPaletteData::ColorPaletteData ( )

Description of constructor still missing

References TRACE.

  : QSharedData()
{
  TRACE;
  _colors=0;
  _upperValues=0;
  _n=0;
}

QGpGuiTools::ColorPaletteData::ColorPaletteData ( const ColorPaletteData & o )

References TRACE.

  : QSharedData(o)
{
  TRACE;
  _n=o._n;
  _n2=o._n2;
  _colors=new QColor[_n];
  int i;
  for(i=0;i < _n;i++ )
    _colors[ i ]=o._colors[ i ];
  int n1=_n - 1;
  _upperValues=new double[ n1 ];
  for(i=0;i < n1;i++ )
    _upperValues[ i ]=o._upperValues[ i ];
}

QGpGuiTools::ColorPaletteData::~ColorPaletteData ( )

Description of destructor still missing

References TRACE.

{
  TRACE;
  if(_colors) delete [] _colors;
  if(_upperValues) delete [] _upperValues;
}

Member Function Documentation

void QGpGuiTools::ColorPaletteData::allocate ( int n )

References TRACE.

Referenced by defaultBW(), defaultHSVColors(), and defaultRGBColors().

{
  TRACE;
  if(n < 2) n=2;
  if( !_colors || n!=_n) {
    if(_colors) delete [] _colors;
    _colors=new QColor[ n ];
    if(_upperValues) delete [] _upperValues;
    _upperValues=new double[ n - 1 ];
    _n=n;
    _n2=1;
    while(_n2 < _n - 1) _n2=_n2 << 1; // multiply by 2
    _n2=_n2 >> 1;
  }
}

QColor& QGpGuiTools::ColorPaletteData::color ( int i ) const [inline]

{return _colors[i];}

QColor& QGpGuiTools::ColorPaletteData::color ( double val ) const [inline]

{return _colors[index(val)];}

void QGpGuiTools::ColorPaletteData::colorHSVInterpole	(	int	imin,
		int	imax
	)

References TRACE.

{
  TRACE;
  double h, h2, dh, s, s2, ds, v, v2, dv, a, a2, da;
  if(_n <= 2) return ;
  if(imin < 0) imin=0;
  if(imax > _n - 1) imax=_n - 1;

  QColor& c1=_colors[ imin ];
  h=c1.hue();
  s=c1.saturation();
  v=c1.value();
  a=c1.alpha();

  QColor& c2=_colors[ imax ];
  h2=c2.hue();
  s2=c2.saturation();
  v2=c2.value();
  a2=c2.alpha();

  dh=(h2 - h)/(double) (imax - imin + 1);
  ds=(s2 - s)/(double) (imax - imin + 1);
  dv=(v2 - v)/(double) (imax - imin + 1);
  da=(a2 - a)/(double) (imax - imin + 1);

  for(int i=imin + 1; i < imax; i++ ) {
    h += dh;
    s += ds;
    v += dv;
    a += da;
    _colors[ i ].setHsv(( int) h, (int) s, (int) v, (int) a);
  }
}

void QGpGuiTools::ColorPaletteData::colorRGBInterpole	(	int	imin,
		int	imax
	)

References TRACE.

{
  TRACE;
  double r, r2, dr, g, g2, dg, b, b2, db, a, a2, da;
  if(_n <= 2) return ;
  if(imin < 0) imin=0;
  if(imax > _n - 1) imax=_n - 1;

  QColor& c1=_colors[ imin ];
  r=c1.red();
  g=c1.green();
  b=c1.blue();
  a=c1.alpha();

  QColor& c2=_colors[ imax ];
  r2=c2.red();
  g2=c2.green();
  b2=c2.blue();
  a2=c2.alpha();

  dr=(r2 - r)/(double) (imax - imin + 1);
  dg=(g2 - g)/(double) (imax - imin + 1);
  db=(b2 - b)/(double) (imax - imin + 1);
  da=(a2 - a)/(double) (imax - imin + 1);

  for(int i=imin + 1; i < imax; i++ ) {
    r += dr;
    g += dg;
    b += db;
    a += da;
    _colors[ i ]=QColor(( int) r, (int) g, (int) b, (int) a);
  }
}

int QGpGuiTools::ColorPaletteData::count ( ) const [inline]

{return _n;}

void QGpGuiTools::ColorPaletteData::defaultBW	(	int	n,
		int	transparency
	)

References allocate(), and TRACE.

{
  TRACE;
  allocate(n);
  double truc, g;

  for(int i=0; i < _n; i++ ) {
    truc=(double) i/(double) (n - 1);
    g=1. - truc * truc;
    _colors[ i ]=QColor(( int) (g * 255), (int) (g * 255), (int) (g * 255), transparency);
  }
}

void QGpGuiTools::ColorPaletteData::defaultHSVColors	(	int	sat,
		int	value,
		int	n,
		int	transparency
	)

References allocate(), and TRACE.

{
  TRACE;
  allocate(n);
  for(int i=0; i < _n; i++ ) {
    _colors[ i ]=QColor::fromHsv(( int) (( double) i * 330.0/(double) _n), sat, value, transparency);
  }
}

void QGpGuiTools::ColorPaletteData::defaultRGBColors	(	int	n,
		int	transparency
	)

References allocate(), and TRACE.

{
  TRACE;
  allocate(n);
  int i;
  if(_n==2) {
    _colors[ 0 ]=QColor(0, 0, 255, transparency);
    _colors[ 1 ]=QColor(255, 0, 0, transparency);
  } else if(_n==3) {
    _colors[ 0 ]=QColor(0, 0, 255, transparency);
    _colors[ 1 ]=QColor(0, 255, 0, transparency);
    _colors[ 2 ]=QColor(255, 0, 0, transparency);
  } else {
    double truc, r, g, b;

    int n1=_n/3;
    int n2=n1 + (_n - n1)/2;
    for(i=0; i < n1; i++ ) {
      truc=(double) i/(double) n1;
      r=0.;
      g=pow(truc, 0.3);
      b=1. - truc * truc;
      _colors[ i ]=QColor(( int) (r * 255), (int) (g * 255), (int) (b * 255), transparency);
    }
    for(i=n1; i < n2; i++ ) {
      truc=(double) (i - n1)/(double) (n2 - n1);
      r=pow(truc, 0.3);
      g=1.;
      b=0.;
      _colors[ i ]=QColor(( int) (r * 255), (int) (g * 255), (int) (b * 255), transparency);
    }
    for(i=n2; i < _n; i++ ) {
      truc=(double) (i - n2)/(double) (n - n2 - 1);
      r=1.;
      g=1. - truc * truc;
      b=0.;
      _colors[ i ]=QColor(( int) (r * 255), (int) (g * 255), (int) (b * 255), transparency);
    }
  }
}

int QGpGuiTools::ColorPaletteData::index ( double val ) const

Returns the color index of value val. The palette must at least contain two items.

References TRACE.

{
  TRACE;
  if(val <= _upperValues[ 0 ] ) return 0;
  int lasti=_n - 2;
  if(val > _upperValues[ lasti ] ) return lasti + 1;
  int i=_n2;
  int step2=i >> 1;
  while(step2 > 0) {
    if(i > lasti) i -= step2;
    else if(val <= _upperValues[ i ] ) {
      if(val > _upperValues[ i - 1 ] ) break;
      i -= step2;
    } else
      i += step2;
    step2=step2 >> 1;
  }
  return i;
}

double QGpGuiTools::ColorPaletteData::lowerValue ( int i ) const [inline]

{return i>0 ? _upperValues[i-1] : -1e99;}

bool QGpGuiTools::ColorPaletteData::operator!= ( const ColorPaletteData & o ) const [inline]

{return ! operator==(o);}

bool QGpGuiTools::ColorPaletteData::operator== ( const ColorPaletteData & o ) const

References TRACE.

{
  TRACE;
  if(_n!=o._n) return false;
  int i;
  for(i=0;i < _n;i++ ) {
    if(_colors[ i ]!=o._colors[ i ] ) return false;
  }
  int n1=_n - 1;
  for(i=0;i < n1;i++ ) {
    if(_upperValues[ i ]!=o._upperValues[ i ] ) return false;
  }
  return true;
}

void QGpGuiTools::ColorPaletteData::setColor	(	int	i,
		const QColor &	c
	)		const `[inline]`

{_colors[i]=c;}

void QGpGuiTools::ColorPaletteData::setUpperValue	(	int	i,
		double	v
	)		`[inline]`

{_upperValues[i]=v;}

void QGpGuiTools::ColorPaletteData::setVLinear	(	double	min,
		double	max
	)		`[inline]`

References setVLinear().

Referenced by setVLinear().

{setVLinear(0, _n-2, min, max);}

void QGpGuiTools::ColorPaletteData::setVLinear	(	int	imin,
		int	imax,
		double	min,
		double	max
	)

References TRACE.

{
  TRACE;
  if(_n==2)
    _upperValues[ 0 ]=(min + max) * 0.5;
  else if(_n < 2) return ;
  else {
    if(imin<0) imin=0;
    else if(imin>=_n-1) imin=_n-2;
    if(imax<0) imax=0;
    else if(imax>=_n-1) imax=_n-2;
    double inc=(max - min)/(double) (imax -imin);
    _upperValues[ imin ]=min;
    for(int i=imin+1;i <= imax; i++ ) _upperValues[ i ]=_upperValues[ i - 1 ] + inc;
  }
}

void QGpGuiTools::ColorPaletteData::setVLog	(	double	min,
		double	max
	)		`[inline]`

References setVLog().

Referenced by setVLog().

{setVLog(0, _n-2, min, max);}

void QGpGuiTools::ColorPaletteData::setVLog	(	int	imin,
		int	imax,
		double	min,
		double	max
	)

References TRACE.

{
  TRACE;
  if(_n==2)
    _upperValues[ 0 ]=(min + max) * 0.5;
  else if(_n < 2) return ;
  else {
    if(imin<0) imin=0;
    else if(imin>=_n-1) imin=_n-2;
    if(imax<0) imax=0;
    else if(imax>=_n-1) imax=_n-2;
    double inc=pow(max/min, 1/(double) (imax - imin) );
    _upperValues[ imin ]=min;
    for(int i=imin+1;i <= imax; i++ ) _upperValues[ i ]=_upperValues[ i - 1 ] * inc;
  }
}

double QGpGuiTools::ColorPaletteData::upperValue ( int i ) const [inline]

{return i<_n-1 ? _upperValues[i] : 1e99;}

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

QGpGuiTools/ColorPaletteData.h
QGpGuiTools/ColorPaletteData.cpp

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation