Guide — a horizontal or vertical world-space line used as a snap target
and an optional rendered overlay.
axis === 'x' means a vertical line at world x = offset (snaps the X
coordinate); axis === 'y' means a horizontal line at world y = offset
(snaps the Y coordinate). This matches "the X axis snaps along X."
Guide — a horizontal or vertical world-space line used as a snap target and an optional rendered overlay.
axis === 'x'means a vertical line at worldx = offset(snaps the X coordinate);axis === 'y'means a horizontal line at worldy = offset(snaps the Y coordinate). This matches "the X axis snaps along X."