Module environment 

Extended Environment (EEP) value types: the colour, glow, and cloud parameters carried by a region’s or parcel’s sky and water settings.

These are distinct named types (rather than bare [f32; N]) so a colour cannot be transposed with a position, a direction, a scale, or a rotation — all of which are also arrays of f32.

Structs

CloudPosDensity

A windlight cloud layer’s scroll position (X, Y) packed with its density (Z) in one wire 3-vector (the viewer’s cloud_pos_density*). The three components are semantically distinct — two are a 2-D scroll offset, one is a density — so they get named accessors rather than x/y/z, and this type cannot be confused with a position or direction.

Color

An RGB colour — three f32 channels (normally 0.0..=1.0, but HDR environment colours can exceed 1.0). A named type so a colour cannot be transposed with a position, direction, or scale.

ColorAlpha

An RGBA colour — four f32 channels (RGB plus an alpha channel). The alpha-carrying sibling of Color; a distinct type so it can’t be transposed with a 3-channel colour, a position, or a rotation quaternion (all of which are also arrays of f32). Its one wire user is the windlight sunlight_color. Channels are normally 0.0..=1.0 but HDR values can exceed 1.0.

Glow

A windlight sun/moon glow parameter. The wire packs it as a 3-vector (size, reserved, focus) whose middle component is unused/reserved (the viewer always sends 0); it is preserved verbatim so a decode/encode round trip is byte-identical. The meaningful channels are size and focus.