i80_controller sample
PI
is only used within i80_controller sample.
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ESP-IDF Framework and Examples
i80_controller sample
PI
PI macro
Syntax
Show:
Summary
Declaration
from
lvgl_demo_ui.c:12
#define
PI
(
3.14159f
)
Examples
References
from
examples
Code
Location
#define
PI
(
3.14159f
)
lvgl_demo_ui.c:12
lv_coord_t
arc_start
=
count
>
0
?
(
1
-
cosf
(
count
/
180.0f
*
PI
)
)
*
270
:
0
;
lvgl_demo_ui.c:44
lv_coord_t
arc_len
=
(
sinf
(
count
/
180.0f
*
PI
)
+
1
)
*
135
;
lvgl_demo_ui.c:45
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