topic Re: Question about SYMB_MIRRORED ? in Libraries & objects

Question about SYMB_MIRRORED ?

Nader Belal — Mon, 24 Feb 2020 14:30:37 GMT

Hi there,

SYMB_MIRRORED is an Archicad Global Variable to indicate if the object have been mirrored.

My question, how to extract the mirror operation value ??

ie: was it mirrored on the X-axis, Y-axis, arbitrary axis .

Re: Question about SYMB_MIRRORED ?

runxel — Mon, 24 Feb 2020 15:34:35 GMT

Moonlight wrote:
My question, how to extract the mirror operation value ??

You have SYMB_MIRRORED and SYMB_ROTANGLE.
If the rotation angle is 180° (and symb_mirrored is set of course) you can tell it was mirrored a long the x-axis. If no rotation angle is set the mirror axis was the y-axis.

But I don't think you can tell what the very last operation was, since there is no way to compare between states in GDL.

Re: Question about SYMB_MIRRORED ?

Nader Belal — Mon, 24 Feb 2020 19:14:45 GMT

That's why I think there should be a Global variable that can tell us the values

Re: Question about SYMB_MIRRORED ?

Barry Kelly — Tue, 25 Feb 2020 00:57:22 GMT

I think you will find the object is always mirrored about the Y-axis when you look at it in the symbol 2D view of the script editor.
i.e. positive X becomes negative X.

Rotation of the object placed instance does not affect the mirroring, as it will always mirror along the original Y-axis of the object.

Barry.

Re: Question about SYMB_MIRRORED ?

Nader Belal — Tue, 25 Feb 2020 12:14:04 GMT

@Barry Kelly

Is there a way to make the object quasi (self-aware) of the mirrored value ?

Like what happens with rotation and XY position ?

Re: Question about SYMB_MIRRORED ?

Barry Kelly — Tue, 25 Feb 2020 13:14:51 GMT

I”m not quite sure what you mean.
An object either is or isn’t mirrored.

You can always force an object not to mirror.
If it is mirrored you just MUL2 -1,1 in 2D and MULx -1 in 3D.

Barry.

Re: Question about SYMB_MIRRORED ?

Nader Belal — Tue, 25 Feb 2020 13:17:25 GMT

Example,

What if the the correct form to prevent mirror is mul2 1, -1?

Re: Question about SYMB_MIRRORED ?

Barry Kelly — Tue, 25 Feb 2020 13:23:17 GMT

It is always mirrored in the x-axis (about the y-axis) so you only need to MUL the x value at the beginning of your script.

Barry.