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/*
* animation.h
*
* Created by buzzert <buzzert@buzzert.net> 2019-01-20
*/
#pragma once
#include <stdbool.h>
#include <time.h>
typedef double anim_time_interval_t;
struct animation_t;
typedef void(*AnimationCompletion)(struct animation_t *anim, void *context);
typedef enum {
_EmptyAnimationType,
ACursorAnimation,
ALogoAnimation,
} AnimationType;
typedef struct {
AnimationType type;
bool cursor_animating;
double cursor_fade_direction;
} CursorAnimation;
typedef struct {
AnimationType type;
bool direction; // false: in, true: out
} LogoAnimation;
typedef union {
AnimationType type;
CursorAnimation cursor_anim;
LogoAnimation logo_anim;
} Animation;
typedef struct {
bool completed;
anim_time_interval_t start_time;
AnimationCompletion completion_func;
void *completion_func_context;
Animation anim;
} animation_t;
// Convenience: returns current time as anim_time_interval_t
anim_time_interval_t anim_now();
// Easing functions
double anim_qubic_ease_out(double p);
double anim_quad_ease_out(double p);
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