threejs-worldgen
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    Interface SnowSurfaceOptions

    Settings of an MPMSnowSurface (plain JSON; everything but detail is live through set).

    interface SnowSurfaceOptions {
        color: string;
        debris: number;
        detail: number;
        edgeCells: number;
        edgeDepth: number;
        glints: number;
        minDepth: number;
        packedColor: string;
        packedJp: number;
        packedRoughness: number;
        relief: number;
        roughness: number;
        translucency: number;
        translucencyColor: string;
    }
    Index
    color debris detail edgeCells edgeDepth glints minDepth packedColor packedJp packedRoughness relief roughness translucency translucencyColor
    color: string

    Albedo of fresh snow (#rrggbb, sRGB).

    debris: number

    Relief of the blocks drawn on debris, in grid cells: debris blocks are about the size of the simulation's cells, so where a column's particles disagree on Jp (chunks of compacted snow among fractured snow) each particle block (buffers.state.z, e.g. Voronoi clusters assigned at emission; 0…255) is drawn at its own height. 0 off.

    detail: number

    Surface samples per grid cell along x and z. 2 (one per particle spacing) is best: other values beat against the particle lattice. Fixed at construction.

    edgeCells: number

    Width of that blend, in grid cells, starting where the particle cover reaches full depth (~2.5 cells in from the walls).

    edgeDepth: number

    Static snow depth just outside the domain, metres: the surface blends to it at the domain edge (0: bare ground).

    glints: number

    Share of ~6 mm ice grains that glint (glossy, tilted facets catching the sun; faded with distance). 0 off.

    minDepth: number

    Depth below which the cover thins out under the terrain, metres (a soft, patchy snow line rather than a seam).

    packedColor: string

    Albedo of fully compacted snow (footprints, tracks, debris).

    packedJp: number

    Plastic volume ratio Jp at which snow looks fully compacted (1 is fresh).

    packedRoughness: number

    Roughness of fully compacted snow (smoother, a soft sheen).

    relief: number

    Height of the faint wind texture (normal detail only, faded by distance), metres.

    roughness: number

    Roughness of fresh snow.

    translucency: number

    Light scattered through the snow (translucency; 0 off): lights faces turned from the sun, strongest at grazing light.

    translucencyColor: string

    Colour of light that has travelled through snow (ice absorbs red: blue-cyan).

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