import { type MlbRules } from "../eras.ts";
import { type FencePoint } from "../geometry.ts";
import { type DiamondSpec } from "../leagues/baseball.ts";
import { type BuildOptions, type Surface } from "./surface.ts";
/** The fence as points on the field: u across (negative to the left), v out from the back of home plate. */
export declare function fenceOutline(points: readonly FencePoint[], step?: number): [number, number][];
/** Home plate as the rules of a season had it: its outline, its half width and where its middle lies out from home. */
export interface PlateShape {
    /** An outline as a path in the field's screen coordinates (y is minus the distance out from home), or an empty string for a circle. */
    d: string;
    circle?: {
        cx: number;
        cy: number;
        r: number;
    };
    /** Half the plate's width across the line from home to the pitcher. */
    halfWidth: number;
    /** The distance of the plate's middle from the foul lines' meeting, out towards the pitcher. */
    centre: number;
}
/**
 * Home plate in a season: a round plate, a square, the square turned, or the pentagon, centred on the foul lines' meeting, wholly
 * behind it, or in front of it as now. `grow` draws it larger than life, as the rest of the field's small things are.
 */
export declare function plateShape(era: Pick<MlbRules, "plateShape" | "platePlacement">, grow: number, plate?: {
    width: number;
    side: number;
}): PlateShape;
/**
 * The baseball field: grass, warning track, infield, bases, lines and the fence of a park, with the markings of a season (today's
 * by default). With a `diamond` (leagues.ts) the field of a league, in feet: Little League's, a softball field.
 */
export declare function baseball(points: readonly FencePoint[], o: BuildOptions, era?: MlbRules, diamond?: DiamondSpec): Surface;