Brush mirroring

You can use this feature to control up to eight brushes in the Scene simultaneously.

Brush Mirroring options on the Polybrush window

Options

Options for Brush Mirroring

Choose which axis or axes to mirror the brush on (X, Y, or Z). You can disable all axes for no mirroring, or enable any number of axes.

Set which coordinate space to use. If you choose World space, Polybrush mirrors the brush across the World axis. This means that the axes are always the same, matching Unity's world coordinates.

If you choose Camera space, Polybrush uses the Scene Camera's Transform:

x = left/right
y = up/down
z = forward/back