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Libraries & objects
About Archicad and BIMcloud libraries, their management and migration, objects and other library parts, etc.

Question about SYMB_MIRRORED ?

Nader Belal
Mentor
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 .
A good friend of mine have once told me that I“m so brute that I“m capable of creating a GDL script capable of creating GDLs.
7 REPLIES 7
runxel
Hero
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.
Lucas Becker | AC 29 on Mac (Sequoia) | Graphisoft Insider Panelist | Akroter.io – high-end GDL objects | Author of Runxel's Archicad Wiki | Editor at SelfGDL | Developer of the GDL plugin for Sublime Text

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Nader Belal
Mentor
That's why I think there should be a Global variable that can tell us the values
A good friend of mine have once told me that I“m so brute that I“m capable of creating a GDL script capable of creating GDLs.
Barry Kelly
Moderator
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.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Nader Belal
Mentor
@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 ?
A good friend of mine have once told me that I“m so brute that I“m capable of creating a GDL script capable of creating GDLs.
Barry Kelly
Moderator
Iā€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.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
Nader Belal
Mentor
Example,

What if the the correct form to prevent mirror is mul2 1, -1?
A good friend of mine have once told me that I“m so brute that I“m capable of creating a GDL script capable of creating GDLs.
Barry Kelly
Moderator
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.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11