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#include <stdint.h>
#define EVE_VTRACK_FRICTION 500
typedef void (*eve_vtrack_start_t) (EVETouch *, void *);
typedef int (*eve_vtrack_tick_t) (EVETouch *, void *);
typedef void (*eve_vtrack_stop_t) (EVETouch *, void *);
typedef struct EVEVTrack {
eve_vtrack_start_t start;
eve_vtrack_tick_t tick;
eve_vtrack_stop_t stop;
void *param;
} EVEVTrack;
void eve_vtrack_init(void);
EVEVTrack *eve_vtrack_get(void);
void eve_vtrack_set(eve_vtrack_start_t start, eve_vtrack_tick_t tick, eve_vtrack_stop_t stop, void *param);
void eve_vtrack_reset(void);
void eve_vtrack_start(uint8_t tag0, int i);
void eve_vtrack_stop(void);
typedef struct EVEVTrackInert {
int fc;
int f;
int x0;
int y0;
} EVEVTrackInert;
EVEVTrackInert *eve_vtrack_inert_get_param(void);
void eve_vtrack_inert_init(EVEVTrackInert *param, int fc);
void eve_vtrack_inert_start(EVETouch *touch, void *p);
int eve_vtrack_inert_tick(EVETouch *touch, void *p);
void eve_vtrack_inert_stop(EVETouch *touch, void *p);
typedef struct EVEVTrackOsc {
int x;
int y;
double f;
double d;
double a;
uint32_t t_max;
int x0;
int y0;
} EVEVTrackOsc;
EVEVTrackOsc *eve_vtrack_osc_get_param(void);
void eve_vtrack_osc_init(EVEVTrackOsc *param, int x, int y, uint32_t T, double d, uint32_t t_max);
void eve_vtrack_osc_start(EVETouch *touch, void *p);
int eve_vtrack_osc_tick(EVETouch *touch, void *p);
void eve_vtrack_osc_stop(EVETouch *touch, void *p);
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