DGtal::SimpleDistanceColorMap< TValue > Class Template Reference

Aim: simple blue to red colormap for distance information for instance. More...

#include <DGtal/io/colormaps/SimpleDistanceColorMap.h>

Public Types
typedef TValue	Value
	Value type. More...

Public Member Functions
	SimpleDistanceColorMap (const SimpleDistanceColorMap &other)
SimpleDistanceColorMap &	operator= (const SimpleDistanceColorMap &anOther)
	SimpleDistanceColorMap (const Value &amin, const Value &amax, const bool withTick=true)
Color	operator() (const Value &aValue) const
void	selfDisplay (std::ostream &out) const
bool	isValid () const
const Value &	min () const
const Value &	max () const

Protected Member Functions
	SimpleDistanceColorMap ()

Protected Attributes
Value	myMin
	Min value. More...
Value	myMax
	Max value. More...
bool	myTick
	Boolean to activate/desactivate ticks. More...

Detailed Description

template<typename TValue>
class DGtal::SimpleDistanceColorMap< TValue >

Aim: simple blue to red colormap for distance information for instance.

Description of class 'SimpleDistanceColorMap'

Color formula from a fragment shader in https://github.com/dgpdec/course.

Template Parameters

TValue

the value type

Definition at line 64 of file SimpleDistanceColorMap.h.

Member Typedef Documentation

Value

template<typename TValue >

typedef TValue DGtal::SimpleDistanceColorMap< TValue >::Value

Value type.

Definition at line 70 of file SimpleDistanceColorMap.h.

Constructor & Destructor Documentation

SimpleDistanceColorMap() [1/3]

template<typename TValue >

DGtal::SimpleDistanceColorMap< TValue >::SimpleDistanceColorMap

(

const SimpleDistanceColorMap< TValue > &

other

)

Copy constructor.

Parameters

[in]

other

the object to clone. Forbidden by default.

SimpleDistanceColorMap() [2/3]

template<typename TValue >

DGtal::SimpleDistanceColorMap< TValue >::SimpleDistanceColorMap ( const Value &  amin, const Value &  amax, const bool  withTick = true  )

inline

Constructor from two min and max values.

Parameters

[in]	amin	the minimum value of the range.
[in]	amax	the maximum value of the range.
[in]	withTick	if true, white ticks are displayed (default true).

Definition at line 95 of file SimpleDistanceColorMap.h.

                                                    :
    myMin(amin), myMax(amax), myTick(withTick)
    {}

SimpleDistanceColorMap() [3/3]

template<typename TValue >

DGtal::SimpleDistanceColorMap< TValue >::SimpleDistanceColorMap ( )

protected

Constructor. Forbidden by default (protected to avoid g++ warnings).

Member Function Documentation

isValid()

template<typename TValue >

bool DGtal::SimpleDistanceColorMap< TValue >::isValid ( ) const

inline

Checks the validity/consistency of the object.

Returns

'true' if the object is valid, 'false' otherwise.

Definition at line 151 of file SimpleDistanceColorMap.h.

{ return true;}

max()

template<typename TValue >

const Value& DGtal::SimpleDistanceColorMap< TValue >::max ( ) const

inline

Returns the upper bound of the value range.

Returns

The upper bound of the value range.

Definition at line 168 of file SimpleDistanceColorMap.h.

    {
      return myMax;
    }

References DGtal::SimpleDistanceColorMap< TValue >::myMax.

min()

template<typename TValue >

const Value& DGtal::SimpleDistanceColorMap< TValue >::min ( ) const

inline

Returns the lower bound of the value range.

Returns

The lower bound of the value range.

Definition at line 158 of file SimpleDistanceColorMap.h.

    {
      return myMin;
    }

References DGtal::SimpleDistanceColorMap< TValue >::myMin.

operator()()

template<typename TValue >

Color DGtal::SimpleDistanceColorMap< TValue >::operator() ( const Value &  aValue ) const

inline

Computes the color associated with a value.

Parameters

[in]

aValue

A value within the value range.

Returns

A color.

Definition at line 109 of file SimpleDistanceColorMap.h.

    {
      const double val = (NumberTraits<Value>::castToDouble(aValue) - NumberTraits<Value>::castToDouble(myMin))/
      (NumberTraits<Value>::castToDouble(myMax) - NumberTraits<Value>::castToDouble(myMin));
      const double d = 1. - val;
      double r = (1. - d*d) * .8;
      double g = (1. - (2. * (d - .5)) * (2. * (d - .5))) * .7;
      double b = (1. - (1. - d) * (1. - d));
      
      // lines
      if (myTick)
      {
        double h = val;
        h = h * 30.;
        h = h - floor( h );
        h = (1. / (1. + exp(-100.*(h - .55)))) + (1. / (1. + exp(-100.*(-h + .45))));
        h = 1. - h;
        r = h + (1. -h)*r;
        g = h + (1. - h)*g;
        b = h + (1. - h)*b;
      }
      
      return Color(static_cast<unsigned char>(r*255),
                   static_cast<unsigned char>(g*255),
                   static_cast<unsigned char>(b*255));
    }

References DGtal::NumberTraitsImpl< std::decay< T >::type >::castToDouble(), DGtal::SimpleDistanceColorMap< TValue >::myMax, DGtal::SimpleDistanceColorMap< TValue >::myMin, and DGtal::SimpleDistanceColorMap< TValue >::myTick.

operator=()

template<typename TValue >

SimpleDistanceColorMap& DGtal::SimpleDistanceColorMap< TValue >::operator=

(

const SimpleDistanceColorMap< TValue > &

anOther

)

Assignment.

Parameters

[in]

anOther

the object to copy.

Returns

a reference on 'this'. Forbidden by default.

selfDisplay()

template<typename TValue >

void DGtal::SimpleDistanceColorMap< TValue >::selfDisplay

(

std::ostream &

out

)

const

Writes/Displays the object on an output stream.

Parameters

[in,out]

out

the output stream where the object is written.

Field Documentation

myMax

template<typename TValue >

Value DGtal::SimpleDistanceColorMap< TValue >::myMax

protected

Max value.

Definition at line 180 of file SimpleDistanceColorMap.h.

Referenced by DGtal::SimpleDistanceColorMap< TValue >::max(), and DGtal::SimpleDistanceColorMap< TValue >::operator()().

myMin

template<typename TValue >

Value DGtal::SimpleDistanceColorMap< TValue >::myMin

protected

Min value.

Definition at line 177 of file SimpleDistanceColorMap.h.

Referenced by DGtal::SimpleDistanceColorMap< TValue >::min(), and DGtal::SimpleDistanceColorMap< TValue >::operator()().

myTick

template<typename TValue >

bool DGtal::SimpleDistanceColorMap< TValue >::myTick

protected

Boolean to activate/desactivate ticks.

Definition at line 183 of file SimpleDistanceColorMap.h.

Referenced by DGtal::SimpleDistanceColorMap< TValue >::operator()().

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

• SimpleDistanceColorMap.h