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Diffstat (limited to 'code/fe310/eos/eve/eve_track.c')
-rw-r--r--code/fe310/eos/eve/eve_track.c77
1 files changed, 0 insertions, 77 deletions
diff --git a/code/fe310/eos/eve/eve_track.c b/code/fe310/eos/eve/eve_track.c
deleted file mode 100644
index 97ef72b..0000000
--- a/code/fe310/eos/eve/eve_track.c
+++ /dev/null
@@ -1,77 +0,0 @@
-#include <stdlib.h>
-#include <math.h>
-
-#include "eve.h"
-
-void eve_track_init(void) {
- eve_etrack_set(eve_track_inert_init, eve_track_inert_tick, NULL, NULL);
-}
-
-void eve_track_set(uint8_t type, void *param) {
- switch (type) {
- case EVE_TRACK_TYPE_INERT:
- eve_etrack_set(eve_track_inert_init, eve_track_inert_tick, NULL, NULL);
- break;
- case EVE_TRACK_TYPE_OSC:
- eve_etrack_set(NULL, eve_track_osc_tick, NULL, param);
- break;
- default:
- break;
- }
-}
-
-void eve_track_inert_init(EVETouchTimer *timer, EVETouch *touch) {
- double d = sqrt(touch->vx * touch->vx + touch->vy * touch->vy);
- int fc = (double)(EVE_RTC_FREQ) * d / EVE_TRACK_FRICTION;
-
- timer->p = (void *)fc;
-}
-
-int eve_track_inert_tick(EVETouchTimer *timer, EVETouch *touch) {
- int dt = eve_time_get_tick() - touch->t;
- int fc = (int)timer->p;
- int more = 1;
-
- if (dt >= fc / 2) {
- dt = fc / 2;
- more = 0;
- }
- touch->x = timer->x0 + (touch->vx * dt - touch->vx * dt / fc * dt) / (int)(EVE_RTC_FREQ);
- touch->y = timer->y0 + (touch->vy * dt - touch->vy * dt / fc * dt) / (int)(EVE_RTC_FREQ);
- return more;
-}
-
-void eve_track_osc_init(EVETrackOsc *p, int x, int y, uint32_t T, double d, uint32_t t_max) {
- double f0 = 2 * M_PI / (T * EVE_RTC_FREQ / 1000);
-
- if (d < 0) d = 0;
- if (d > 1) d = 1;
- p->x = x;
- p->y = y;
- p->f = d ? f0 * sqrt(1 - d * d) : f0;
- p->d = d;
- p->a = -d * f0;
- p->t_max = t_max;
-}
-
-int eve_track_osc_tick(EVETouchTimer *timer, EVETouch *touch) {
- EVETrackOsc *p = (EVETrackOsc *)timer->p;
- int dt = eve_time_get_tick() - touch->t;
- int ax = timer->x0 - p->x;
- int ay = timer->y0 - p->y;
- int more = 1;
-
- if (p->t_max && (dt >= p->t_max)) {
- dt = p->t_max;
- more = 0;
- }
- if (p->d) {
- double e = exp(p->a * dt);
- ax = ax * e;
- ay = ay * e;
- if ((ax == 0) && (ay == 0)) more = 0;
- }
- touch->x = p->x + ax * cos(p->f * dt);
- touch->y = p->y + ay * cos(p->f * dt);
- return more;
-}