Types - Hatch#

type ExpandHatchOptions
// = {
    /** NurbsCurve sampling tolerance in uv units for clip operations. */
    tolerance: number;
    /** Hard cap on lattice instances — REQUIRED from the caller. Exceeding
     *  throws with the computed count (no silent default / truncate). */
    maxCellInstances: number;
}

type Hatch
// = {
    /** Pattern content in the unit-cell frame [0,1]² (content MAY overflow).
     *  Only point / curve / face entities. */
    cell: HatchCellEntity[];
    /** Lattice basis columns (uv units). Default [[1,0],[0,1]].
     *  Validation: |det| > 0. All Bravais lattices are expressed here. */
    basis?: [Vector2d, Vector2d];
    /** Pattern origin in uv. Default [0,0]. */
    origin?: [number, number];
    /** Pattern rotation in **degrees** (DXF / .pat convention; scene has no
     *  prior angle field on entity geometry — INHERITED from interchange). */
    angle?: number;
    /** Uniform scale in uv. Anisotropy belongs in `basis`. Default 1;
     *  scale=1 with default basis ⇒ whole-face, no-repeat mode. */
    scale?: number;
    /** The uv domain: one trimmed face (tables with exactly one face).
     *  Trim loops = hatch boundary. Runtime still checks face count for io. */
    face: TrimmedFace;
}

type HatchEvent
// = {
    t: number;
    type: "seg" | "pt";
    end?: number;
}

type LatticeRange
// = {
    iMin: number;
    iMax: number;
    jMin: number;
    jMax: number;
}

type PatLineFamily
// = {
    /** Angle in degrees (DXF/.pat). */
    angleDeg: number;
    /** Base point of the family (uv). */
    base: [number, number];
    /** Offset vector between parallel lines (uv). */
    offset: Vector2d;
    /** Dash items: >0 draw, 0 point, <0 gap. Empty ⇒ continuous. */
    dashItems: number[];
}

type UvFace
// = {
    outer: Point2d[];
    holes: Point2d[][];
}

type UvPolyline
// = {
    points: Point2d[];
}