I am trying to study the flip application code at door. Where should I look?

[LeeJaeYoung]

I made a door, but Flip doesn't work.
What should I study?

I did the following things and later found out that it was this.

if WIDO_REVEAL_SIDE then
mul2 -1, 1
rot2 180
add2 0, WIDO_FRAME_THICKNESS
endif

Where is the door flip used below?

ac_wido_flip_once boolean
Flips the window or door once after the execution of the migration script if the parameter is present and its value is true.

ac_wido_flip_disable integer
This parameter can disable the "Flip" button on the user interface. The default value affects only the placing of the object.
-1: Flip is enabled.
0: Flip is disabled. The default is not flipped.
1: Flip is disabled. The default is flipped.

[Peter Baksa · Accepted solution]

Hi,

ac_wido_flip_once: use it to flip placed openings during migration. This is only needed if there was some bug in the previous version of an object.

ac_wido_flip_disable: disabling flip, the user can't change the direction of the opening relative to the reveal. During placement the first click determines the outside/reveal side, the second click the opening direction. It can be used to make openings that can open only inside or only outside (eg. a sectional garage door's structure is always on the inside).

[LeeJaeYoung]

thank you so much ^^