friz::EaseIn Class Reference

A slew-based ease in curve – accelerates quickly, then decelerates as it approaches the end value. More...

#include <easing.h>

Inheritance diagram for friz::EaseIn:

Public Member Functions
	EaseIn (float startVal, float endVal, float tolerance, float slewRate)
Public Member Functions inherited from friz::EasingCurve
	EasingCurve (float startVal, float endVal, float tolerance, float slewRate_)
Public Member Functions inherited from friz::ToleranceValue
	ToleranceValue (float startVal, float endVal, float tolerance)
float	getNextValue (int, int msSinceLastUpdate) override
	Calculate the next value in the sequence based on the delta time since last updated. Internally, we use an update rate of 1 kHz to recalculate values so that we can remain consistent as the actual animation frame rate changes.
bool	isFinished () override
	Test to see if this value has reached its end state.
Public Member Functions inherited from friz::AnimatedValue
	AnimatedValue (float startVal_, float endVal_)
	Base class init for the animated value classes.
virtual float	getNextValue (int msElapsed, int msSinceLastUpdate)=0
float	getEndValue () const
	get the ending state of this value object. When we cancel an in-progress animation, we may need to snap to the end value, and this gives a way to get there immediately.
virtual bool	isFinished ()=0
virtual bool	updateTarget (float)
	Attempt to change the end value of an animation that's currently in process.
void	cancel (bool moveToEndPosition)
	Cancel an in-progress animation.

Private Member Functions
float	generateNextValue () override
	Execute a single step of this curve's function.

Additional Inherited Members
Protected Attributes inherited from friz::EasingCurve
float	slewRate
Protected Attributes inherited from friz::ToleranceValue
float	tolerance
Protected Attributes inherited from friz::AnimatedValue
float	startVal
float	endVal
float	currentVal
bool	canceled { false }
bool	finished { false }

Detailed Description

A slew-based ease in curve – accelerates quickly, then decelerates as it approaches the end value.

Constructor & Destructor Documentation

EaseIn()

friz::EaseIn::EaseIn	(	float	startVal,
		float	endVal,
		float	tolerance,
		float	slewRate
	)

Decelerate into the end value.

Parameters

startVal	start value
endVal	end value
tolerance	Tolerance for stopping.
slewRate	slew rate, must be 0 < rate < 1

Member Function Documentation

generateNextValue()

float friz::EaseIn::generateNextValue ( )

overrideprivatevirtual

Execute a single step of this curve's function.

Returns

next value.

Implements friz::ToleranceValue.

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

• Source/friz/curves/easing.h
• Source/friz/curves/easing.cpp