Description
Have a set of cascaded animations that are consistent (1 > 2 > 3)
What MCU/Processor/Board and compiler are you using?
ESP32 / Platform IO
What LVGL version are you using?
v7.7 with tft_eSPI
What do you want to achieve?
I have to sets of three chevrons ("< < < > > >") that I want to animate. I want them to “flash” in an outward direction, so the inner ones first, then the middle, then the outer. This requires a pair of identical, syncronised starts and then cascaded animation.
What have you tried so far?
Different timings, but they never seem to start/end at the same time, the flashing always ends up fairly random.
Code to reproduce
//location on the screen
int x = -100;
int d = 250;
for (int i = 0; i < 6; i++) {
//select correct arrow
const char* text = "<";
if (i > 2) { text = ">"; }
//create the arrow
hp.chevrons[i] = lv_label_create(scr, NULL);
lv_obj_set_style_local_opa_scale(hp.chevrons[i], LV_OBJ_PART_MAIN, LV_STATE_DEFAULT, 0);
lv_label_set_text(hp.chevrons[i], text);
lv_obj_align(hp.chevrons[i], scr, LV_ALIGN_CENTER, x, -30);
//select the next "x" coordinate
x = x + 20;
if (x < 0) {
d = d - 125;
} else {
d = d + 125;
}
if (x == -40) { x = 60; }
lv_anim_t a;
lv_anim_init(&a);
lv_anim_set_exec_cb(&a, (lv_anim_exec_xcb_t) anim_opacity_cb);
lv_anim_set_var(&a, hp.chevrons[i]);
lv_anim_set_time(&a, 125);
lv_anim_set_values(&a, LV_OPA_COVER, LV_OPA_TRANSP);
lv_anim_set_playback_time(&a, 125);
lv_anim_set_playback_delay(&a, d);
lv_anim_set_repeat_count(&a, LV_ANIM_REPEAT_INFINITE);
lv_anim_set_repeat_delay(&a, 500);
lv_anim_start(&a);
}
Screenshot and/or video
If possible, add screenshots and/or videos about the current state.
