/**
 * Type + parameter schema for the planet-shaders library.
 *
 * Each parameter is a {@link ParamDef} carrying its **type, range and
 * default** — the schema needed to drive shader uniforms and to back
 * a control panel. Display strings (labels, group names, select-option
 * names, type icons) are deliberately absent: they are i18n / UI
 * concerns owned by the caller. A reference dictionary lives in the
 * playground (`playground/src/lib/paramLabels.ts`).
 *
 * Numeric `min/max/step` come from `shaderRanges.ts` (single source of
 * truth across shader code, schema and tests).
 */
/**
 * Shader-side body-type identifier. Same string set as
 * `BodyConfig['type']` — the two types are kept structurally distinct so
 * the shader catalogue can evolve independently from the public config
 * surface (e.g. add a render-only `'preview'` type without touching
 * `BodyConfig`).
 */
export type LibBodyType = 'rocky' | 'gaseous' | 'metallic' | 'star';
/**
 * Definition of a single shader parameter — either a numeric slider
 * (`min/max/step`), a colour picker (`type: 'color'`) or an enum select
 * (`type: 'select'` + `optionCount`). Display strings (`label`, option
 * names) are NOT carried by the schema; callers map `paramKey` to a
 * label of their choosing.
 */
export interface ParamDef {
    /**
     * Editor widget hint:
     *   - `'color'`  → hex picker (default is `'#rrggbb'`)
     *   - `'select'` → enum dropdown (default is the index, requires `optionCount`)
     *   - `'toggle'` → checkbox storing `0` or `1`. The shader uniform stays a
     *                  float so it can multiply into a layer expression with
     *                  no GLSL branching cost.
     *   - omitted    → numeric slider (`default` is a number, `min`/`max`/`step`
     *                  drive the bounds)
     */
    type?: 'color' | 'select' | 'toggle';
    min?: number;
    max?: number;
    step?: number;
    default: number | string | number[];
    /**
     * Number of valid options for a `type: 'select'` parameter. The shader
     * receives the selected index in `[0, optionCount - 1]`. Caller-side
     * UIs map each index to a display string (see playground's
     * `SELECT_OPTION_LABELS`).
     */
    optionCount?: number;
}
/**
 * Full shader-parameter catalogue keyed by body type. Each body type maps
 * to a flat record of `paramName → {@link ParamDef}`. Authoritative
 * schema for any external control panel.
 */
export type BodyParamsMap = Record<LibBodyType, Record<string, ParamDef>>;
/**
 * Shader parameter catalogue for every supported body type. The
 * structure mirrors {@link BodyParamsMap}; it is the single source of
 * truth for default values and UI bounds across the library.
 */
export declare const BODY_PARAMS: BodyParamsMap;
/**
 * Returns a `{ key: defaultValue }` map for every parameter of a planet type.
 */
export declare function getDefaultParams(type: LibBodyType): Record<string, number | string | number[]>;
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