simox::color Namespace Reference

Namespaces
	interpol

Data Structures
struct	Color
	An RGBA color, where each component is a byte in [0, 255]. More...
class	ColorMap
	A color map, mapping scalar values to colors. More...
class	GlasbeyLUT
struct	KellyColor
	An RGBA color, where each component is a byte in [0, 255]. Additionally contains an id denoting its position. More...
class	KellyColorStack
	Stack of 20 distinguishable colors by Kenneth L. Kelly but without black and white, e.g. usable for creating graphs. More...
class	KellyLUT
	20 distinguishable colors by Kenneth L. Kelly but without black and white, e.g. usable for creating graphs More...

Functions
std::ostream &	operator<< (std::ostream &os, const Color &c)
bool	operator== (const Color &lhs, const Color &rhs)
bool	operator!= (const Color &lhs, const Color &rhs)
template<typename Int , std::enable_if_t< std::is_integral_v< Int >, int > = 0>
uint8_t	to_byte (Int value)
	Convert an integral type to a byte in [0, 255]. More...
template<typename Float , std::enable_if_t< std::is_floating_point_v< Float >, int > = 0>
uint8_t	to_byte (Float value)
	Convert a floating point type to a byte in [0, 255]. More...
template<typename Int , std::enable_if_t< std::is_integral_v< Int >, int > = 0>
float	to_float (Int value)
	Convert an integral point type to a float in [0.0, 1.0]. More...
template<typename Float , std::enable_if_t< std::is_floating_point_v< Float >, int > = 0>
float	to_float (Float value)
	Convert a floating pont type to a float in [0.0, 1.0]. More...
template<typename Scalar , int Rows, int Cols>
Eigen::Matrix< int, Rows, Cols >	to_byte (Eigen::Matrix< Scalar, Rows, Cols > vector)
template<typename Scalar , int Rows, int Cols>
Eigen::Matrix< float, Rows, Cols >	to_float (Eigen::Matrix< Scalar, Rows, Cols > vector)
Eigen::Vector3f	rgb_to_hsv (const Eigen::Vector3f &rgb)
	Convert an RGB color to HSV. More...
Eigen::Vector3f	hsv_to_rgb (const Eigen::Vector3f &hsv)
	Convert an HSV color to RGB. More...
Color	linear_hsv (float t, const Color &lhs, const Color &rhs)
	Interpolate linearly in HSV space. (lhs and rhs are expected to be RGB.) More...
void	to_json (nlohmann::json &j, const Color &color)
void	from_json (const nlohmann::json &j, Color &color)

Variables
static const std::vector< uint8_t >	GLASBEY_LUT
	Glasbey lookup table. More...

Function Documentation

from_json()

void simox::color::from_json	(	const nlohmann::json &	j,
		Color &	color
	)

hsv_to_rgb()

Eigen::Vector3f simox::color::hsv_to_rgb

(

const Eigen::Vector3f &

hsv

)

Convert an HSV color to RGB.

See also

simox::color::rgb_to_hsv() for the expected intervals.

Parameters

hsv	The HSV color in [0, 360] x [0, 1] x [0, 1]

Returns

The RGB color with all channels in [0, 1].

linear_hsv()

Color simox::color::linear_hsv	(	float	t,
		const Color &	lhs,
		const Color &	rhs
	)

Interpolate linearly in HSV space. (lhs and rhs are expected to be RGB.)

operator!=()

bool simox::color::operator!= ( const Color &  lhs, const Color &  rhs  )

inline

operator<<()

std::ostream& simox::color::operator<< ( std::ostream &  os, const Color &  c  )

inline

operator==()

bool simox::color::operator== ( const Color &  lhs, const Color &  rhs  )

inline

rgb_to_hsv()

Eigen::Vector3f simox::color::rgb_to_hsv

(

const Eigen::Vector3f &

rgb

)

Convert an RGB color to HSV.

Hue is measured in degrees, i.e. [0, 360]. All other channels (saturation, value, red, green, blue) are in the interval [0, 1].

Parameters

rgb	The RGB color with all channels in range [0, 1].

Returns

The HSV color in [0, 360] x [0, 1] x [0, 1].

to_byte() [1/3]

template<typename Int , std::enable_if_t< std::is_integral_v< Int >, int > = 0>

uint8_t simox::color::to_byte

(

Int

value

)

Convert an integral type to a byte in [0, 255].

to_byte() [2/3]

template<typename Float , std::enable_if_t< std::is_floating_point_v< Float >, int > = 0>

uint8_t simox::color::to_byte

(

Float

value

)

Convert a floating point type to a byte in [0, 255].

to_byte() [3/3]

template<typename Scalar , int Rows, int Cols>

Eigen::Matrix<int, Rows, Cols> simox::color::to_byte

(

Eigen::Matrix< Scalar, Rows, Cols >

vector

)

to_float() [1/3]

template<typename Int , std::enable_if_t< std::is_integral_v< Int >, int > = 0>

float simox::color::to_float

(

Int

value

)

Convert an integral point type to a float in [0.0, 1.0].

to_float() [2/3]

template<typename Float , std::enable_if_t< std::is_floating_point_v< Float >, int > = 0>

float simox::color::to_float

(

Float

value

)

Convert a floating pont type to a float in [0.0, 1.0].

to_float() [3/3]

template<typename Scalar , int Rows, int Cols>

Eigen::Matrix<float, Rows, Cols> simox::color::to_float

(

Eigen::Matrix< Scalar, Rows, Cols >

vector

)

to_json()

void simox::color::to_json	(	nlohmann::json &	j,
		const Color &	color
	)

Variable Documentation

GLASBEY_LUT

const std::vector<uint8_t> simox::color::GLASBEY_LUT

static

Glasbey lookup table.