/**
 * JS-side signed-distance evaluator for SDFNode trees. This mirrors the
 * SDFRayMarchCompiler node shape but evaluates distances directly, so
 * conjecture probes can sample SDFs without compiling GLSL.
 */
export type SDFPrimitive = 'sphere' | 'box' | 'rounded_box' | 'torus' | 'cylinder' | 'cone' | 'capsule' | 'ellipsoid' | 'plane' | 'hex_prism' | 'tri_prism' | 'octahedron' | 'pyramid' | 'link' | 'capped_torus' | 'round_cone' | 'vesica' | 'rhombus' | 'gyroid' | 'heart' | 'mandelbulb' | 'menger';
export type SDFCSGOperation = 'union' | 'intersect' | 'difference' | 'subtract' | 'smooth_union' | 'smooth_intersect' | 'smooth_difference' | 'smooth_subtract';
export type SDFDomainOperation = 'repeat' | 'twist' | 'bend';
export type SDFPoint = readonly [number, number, number];
export interface SDFNode {
    type: 'primitive' | 'csg' | 'domain';
    primitive?: SDFPrimitive;
    params?: Readonly<Record<string, number>>;
    operation?: SDFCSGOperation | SDFDomainOperation;
    smoothness?: number;
    children?: ReadonlyArray<SDFNode>;
    translate?: SDFPoint;
    rotate?: SDFPoint;
    scale?: SDFPoint;
}
export interface SDFEvaluation {
    distance: number;
    point: SDFPoint;
    rootType: SDFNode['type'];
    primitive?: SDFPrimitive;
    operation?: SDFCSGOperation | SDFDomainOperation;
}
export type SDFSampleResolution = readonly [number, number, number];
export interface SDFSampleBounds {
    min: SDFPoint;
    max: SDFPoint;
    resolution: SDFSampleResolution;
}
export interface SDFDistanceField {
    bounds: {
        min: SDFPoint;
        max: SDFPoint;
    };
    resolution: SDFSampleResolution;
    spacing: SDFPoint;
    distances: ReadonlyArray<number>;
    samples: ReadonlyArray<SDFEvaluation>;
}
export declare function evaluateSDFNode(root: SDFNode, samplePoint: SDFPoint): number;
export declare function sampleSDFDistanceField(root: SDFNode, bounds: SDFSampleBounds): SDFDistanceField;
export declare class SDFPointEvaluator {
    readonly root: SDFNode;
    constructor(root: SDFNode);
    evaluate(samplePoint: SDFPoint): SDFEvaluation;
    sample(points: ReadonlyArray<SDFPoint>): ReadonlyArray<SDFEvaluation>;
    sampleField(bounds: SDFSampleBounds): SDFDistanceField;
}
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