Arduino library that implement easing functions for smoothing variable changes. (For example, for changing a motor speed smoothly)

Just create a new Easing instance, and use = operator to set the new SetPoint. Then, use GetValue() function to get the smooth value.

Easing interval can be set in the Easing constructor, or change with SetMillisInterval() or SetMicrosInterval() methods. Aditionally, can use Init() to inmediately change both Setpoint and variable.

LINEAR
EASE_IN_QUAD
EASE_OUT_QUAD
EASE_IN_OUT_QUAD
EASE_IN_CUBIC
EASE_OUT_CUBIC
EASE_IN_OUT_CUBIC
EASE_IN_QUART
EASE_OUT_QUART
EASE_IN_OUT_QUART
EASE_IN_QUINT
EASE_OUT_QUINT
EASE_IN_OUT_QUINT

Five function orders available (LINEAR, QUAD, CUBIC, QUART, QUINT). The higher order, the smoother the response transition (but high slope in the mid transition). Default CUBIC.

Three transitions available (IN, OT and IN-OUT)

#include "EasingLib.h"

int values[8] = { 0, 1000, 4000, 2000, 1000, 3000, 5000, 1000 };

// Default constructor (EASE_IN_OUT_CUBIC, 1000ms)
Easing easing();

// Full constructor
// Easing easing(ease_mode::LINEAR, 500);

void setup() 
{
	while (!Serial){};

	Serial.begin(115200);

	for(auto i = 0; i < 240; i++)
	{
		auto index = i / 30;
		float newValue = values[index];
		
		Serial.print(newValue);
		Serial.print(',');
		Serial.println(easing.SetSetpoint(newValue));

		delay(50);
	}
}

void loop()
{ 
}