rdlib_maths Namespace Reference

Name space for maths related utilities. More...

Functions
int	mapValue (int x, int in_min, int in_max, int out_min, int out_max)
	Maps a value from one range to another using linear interpolation. This function takes an input value within a specified range and maps it to a corresponding value in a different output range using std::lerp.
float	sineFromDegrees (float angle)
	Computes the sine of an angle given in degrees. This function converts the input angle from degrees to radians and then calculates the sine of that angle using the standard C++ sin function.
float	cosineFromDegrees (float angle)
	Computes the cosine of an angle given in degrees. This function converts the input angle from degrees to radians and then calculates the cosine of that angle using the standard C++ cos function.
uint16_t	generateColor (uint8_t value)
	This function is designed to return a color in the 16-bit RGB format based on the input value, creating a smooth transition between colors in different stages.
uint16_t	blend565 (uint16_t c1, uint16_t c2, uint8_t amount)
	: Blend two RGB565 colors using 8-bit mix factor

Detailed Description

Name space for maths related utilities.

Function Documentation

blend565()

uint16_t rdlib_maths::blend565	(	uint16_t	c1,
		uint16_t	c2,
		uint8_t	amount
	)

: Blend two RGB565 colors using 8-bit mix factor

Parameters

c1	first 16-bit color (RGB565)
c2	second 16-bit color (RGB565)
amount	blend level (0–255), 0=c1, 255=c2

Returns

mixed 16-bit RGB565 color

Performs channel-wise interpolation in 565 space. c1 blended towardc2 using linear scaling.

cosineFromDegrees()

float rdlib_maths::cosineFromDegrees

(

float

angle

)

Computes the cosine of an angle given in degrees. This function converts the input angle from degrees to radians and then calculates the cosine of that angle using the standard C++ cos function.

Parameters

angle

The angle in degrees.

Returns

The cosine value of the given angle.

generateColor()

uint16_t rdlib_maths::generateColor

(

uint8_t

value

)

This function is designed to return a color in the 16-bit RGB format based on the input value, creating a smooth transition between colors in different stages.

Parameters

value

input value 1-127

Returns

16 bit color

The gradient is calculated by cycling through different color transitions as val increases, allowing for smooth visual effects such as changing hues or creating rainbow-like effects on an LCD. 1-127 will This will create a gradient color between blue and red based on the value.

mapValue()

int rdlib_maths::mapValue	(	int	x,
		int	in_min,
		int	in_max,
		int	out_min,
		int	out_max
	)

Maps a value from one range to another using linear interpolation. This function takes an input value within a specified range and maps it to a corresponding value in a different output range using std::lerp.

Parameters

x	The input value to map.
in_min	The lower bound of the input range.
in_max	The upper bound of the input range.
out_min	The lower bound of the output range.
out_max	The upper bound of the output range.

Returns

The mapped value in the output range.

sineFromDegrees()

float rdlib_maths::sineFromDegrees

(

float

angle

)

Computes the sine of an angle given in degrees. This function converts the input angle from degrees to radians and then calculates the sine of that angle using the standard C++ sin function.

Parameters

angle

The angle in degrees.

Returns

The sine value of the given angle.