How to Mirror Entities in BricsCAD

Quick answer: MIRROR creates a mirrored copy of a selection along a mirror line, defined by two points, with the option to delete or keep the originals. MIRROR3D does the same in 3D space, along a mirror plane instead. Whether text gets mirrored along with everything else is controlled by MIRRTEXT, the same variable covered on this hub’s text system variables page.

Mirroring Entities Along a Line

1. Launch MIRROR. You’re prompted to select entities to mirror.
2. Select one; the count of entities in the set displays, and you’re prompted to select more.
3. Select more, or press Enter to stop. You’re prompted for the start of the mirror line.
4. Specify a point; the selection rotates dynamically as you move the cursor. You’re prompted for the end of the mirror line.
5. Specify a point; the selection mirrors. You’re prompted whether to delete the original entities.
6. Decide whether to keep or delete the originals.

Mirroring Entities Along a Plane

1. Launch MIRROR3D. You’re prompted to select entities to mirror.
2. Select one; the count displays, and you’re prompted to select more.
3. Select more, or press Enter to stop. You’re prompted to define the mirror plane, by Entity, Last, View, Z axis, X-Y plane, Y-Z plane, Z-X plane, or 3 points (the default).
4. Press Enter to accept the 3 points method. You’re prompted for the first point on the plane.
5. Specify a point. You’re prompted for the second point.
6. Specify a point. You’re prompted for the third point.
7. Specify a point. You’re prompted whether to delete the original entities.
8. Decide whether to keep or delete the originals.

Frequently Asked Questions

What controls whether text mirrors correctly, or stays readable, when mirroring a selection? MIRRTEXT.

What are my options for defining a 3D mirror plane besides three points? Entity, Last, View, Z axis, X-Y plane, Y-Z plane, or Z-X plane.

Can I keep the original entities after mirroring, or does it always delete them? You choose, both MIRROR and MIRROR3D prompt you whether to delete or keep the originals.

Does the selection preview its mirrored position before I confirm it? Yes, when mirroring along a line, the selection rotates dynamically as you specify the end of the mirror line.