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Move work on animation implementation

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Kovid Goyal
2024-07-16 22:05:45 +05:30
parent cd320e05c1
commit 0a707b5c33
6 changed files with 144 additions and 39 deletions
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27
kitty/animation.h
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@@ -8,21 +8,16 @@
#pragma once
#include <stddef.h>
#include <stdbool.h>
typedef struct easing_curve_parameters {
size_t count;
const double *params, *positions;
} easing_curve_parameters;
typedef double(*easing_curve)(easing_curve_parameters, double);
typedef struct Animation {
struct {
easing_curve_parameters params;
easing_curve curve;
} first_half, second_half;
} Animation;
double linear_easing_curve(easing_curve_parameters, double);
double cubic_bezier_easing_curve(easing_curve_parameters, double);
typedef enum { EASING_STEP_START, EASING_STEP_END, EASING_STEP_NONE, EASING_STEP_BOTH } EasingStep;
#ifndef ANIMATION_INTERNAL_API
typedef struct {int x;} *Animation;
#endif
Animation* alloc_animation(void);
double apply_easing_curve(const Animation *a, double t /* must be between 0 and 1*/);
bool animation_is_valid(const Animation *a);
void add_cubic_bezier_animation(Animation *a, double y_at_start, double y_at_end, double start, double p1, double p2, double end);
void add_linear_animation(Animation *a, double y_at_start, double y_at_end, size_t count, const double *params, const double *positions);
void add_steps_animation(Animation *a, double y_at_start, double y_at_end, size_t count, EasingStep step);
Animation* free_animation(Animation *a);