/**
 * Shape geometry
 *
 * Pure functions from a rectangle to SVG path data. Kept free of DOM and
 * reactivity so they can be tested on numbers alone and reused server-side.
 */
import type { ShapeRect } from '@tachui/types/shapes';
/**
 * Format a length for path data: fixed precision with float noise trimmed, so
 * `19.999999999` and `20` produce the same attribute value.
 */
export declare function formatLength(value: number): string;
/**
 * Shrink `rect` by `by` on every side. Matches SwiftUI's `InsettableShape`
 * for the built-in shapes, which are all symmetric about the rect's center.
 * A rect too small to inset collapses to zero size at its center rather than
 * inverting.
 */
export declare function insetRect(rect: ShapeRect, by: number): ShapeRect;
/**
 * A circle inscribed in the short side of `rect`, centered, as SwiftUI's
 * `Circle` draws it. The path starts at the trailing point (3 o'clock) and
 * runs clockwise, which is the start point `trim` will count from.
 */
export declare function circlePath(rect: ShapeRect): string;
/**
 * The rect itself.
 *
 * Starts at the top-left corner and runs clockwise. Every shape here shares
 * that direction, and the start point is what `trim` will count from.
 */
export declare function rectanglePath(rect: ShapeRect): string;
/**
 * The largest corner radius `rect` can carry: half its short side, as SwiftUI
 * clamps `RoundedRectangle`.
 *
 * An SVG `<rect rx ry>` clamps each axis against its own dimension instead, so
 * a radius past the short side draws elliptical corners rather than the
 * capsule SwiftUI gives. That is one of the reasons a shape is drawn as a
 * `<path>`.
 */
export declare function clampCornerRadius(rect: ShapeRect, radius: number): number;
/**
 * A rounded rect with `cornerRadius` on all four corners, clamped to half the
 * short side. Corners are circular arcs, never elliptical.
 *
 * The straight edges are emitted even when a corner radius collapses them to
 * nothing — a capsule's short axis, for instance — so the command sequence is
 * the same whatever the radius.
 */
export declare function roundedRectPath(rect: ShapeRect, cornerRadius: number): string;
/**
 * An ellipse filling `rect` — unlike `circlePath`, which inscribes in the
 * short side. Starts at the trailing point and runs clockwise, as a circle
 * does.
 */
export declare function ellipsePath(rect: ShapeRect): string;
/**
 * A rounded rect whose corners are as round as the rect allows: semicircular
 * caps on the short axis, in either orientation.
 */
export declare function capsulePath(rect: ShapeRect): string;
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