animate.h File Reference

Functions for animating values with various easing functions. More...

#include "gapi.h"
#include <math.h>
#include <stdio.h>

Go to the source code of this file.

Functions
void	gm_anim_spring (double *value, double target, double t)
	Moves a value towards a target with spring-like motion (exponential ease-out).
void	gm_anim_ease_out_quad (double *value, const double target, double t)
	Starts fast and decelerates quadratically to the target. More pronounced than spring.
void	gm_anim_ease_out_cubic (double *value, double target, double t)
	Starts very fast and decelerates cubically to the target. More pronounced than quad.
void	gm_anim_ease_in_quad (double *value, double target, double t)
	Starts slow and accelerates quadratically towards the target.

Detailed Description

Functions for animating values with various easing functions.

General notes on animation functions:

• value: A pointer to the variable to be animated.
• target: The target value to animate towards.
• t: The approximate time the animation should take (in seconds). It acts as a time constant.

Function Documentation

gm_anim_ease_in_quad()

void gm_anim_ease_in_quad	(	double *	value,
		double	target,
		double	t )

Starts slow and accelerates quadratically towards the target.

Parameters

value	A pointer to the double value to animate.
target	The target value to animate towards.
t	The animation's approximate duration.

gm_anim_ease_out_cubic()

void gm_anim_ease_out_cubic	(	double *	value,
		double	target,
		double	t )

Starts very fast and decelerates cubically to the target. More pronounced than quad.

Parameters

value	A pointer to the double value to animate.
target	The target value to animate towards.
t	The animation's approximate duration.

gm_anim_ease_out_quad()

void gm_anim_ease_out_quad	(	double *	value,
		const double	target,
		double	t )

Starts fast and decelerates quadratically to the target. More pronounced than spring.

Parameters

value	A pointer to the double value to animate.
target	The target value to animate towards.
t	The animation's approximate duration.

gm_anim_spring()

void gm_anim_spring	(	double *	value,
		double	target,
		double	t )

Moves a value towards a target with spring-like motion (exponential ease-out).

Parameters

value	A pointer to the double value to animate.
target	The target value to animate towards.
t	The animation's approximate duration. A smaller 't' results in a faster animation.