OptionalcapOptionaldistancePlane offset in world units: dot(pointOnPlane, normal).
OptionalflippedOptionalidKeys this plane's cap among the cutting planes beyond the first (#7545); unused on the primary plane.
OptionalmaxOptionalminOptionalnormalOptional world-space plane normal (unit vector). When provided
together with distance, the shader clip uses them verbatim and
ignores axis, position, min, max, and any buildingRotation.
Used for face-pick / arbitrary slice planes (issue #243).
OptionalshowIf true (default), render filled cap surfaces with a screen-space hatch.
OptionalshowFalse hides the preview quad of the primary plane (the plane still clips and caps). Default true (#7545).
OptionalshowIf true (default), draw polygon outlines on the cut surfaces. Users can turn surfaces and outlines on/off independently from the UI.
Override the default cap appearance.