export interface Gaze {
    x: number;
    y: number;
}
export interface PointerLook extends Gaze {
    weight: number;
}
export interface EyeGazes {
    left: Gaze;
    right: Gaze;
}
export declare const centeredGaze: () => Gaze;
export declare const inactivePointer: () => PointerLook;
/** Geometric canvas coordinates retain the target's position, even outside the canvas. */
export declare function pointerLook(pointer: {
    clientX: number;
    clientY: number;
}, bounds: {
    left: number;
    top: number;
    width: number;
    height: number;
}): PointerLook;
export declare function easePointer(current: PointerLook, target: PointerLook, seconds: number, immediate?: boolean): PointerLook;
/** Solve in the projected eye's own axes, then gently saturate travel with distance. */
export declare function gazeAtPoint(pointer: Gaze, center: Gaze, right: Gaze, up: Gaze): Gaze;
export declare function localGaze(gaze: Gaze, rotation: number): Gaze;
export declare function clampGaze({ x, y }: Gaze): Gaze;
export declare function pointerGaze(pointer: {
    clientX: number;
    clientY: number;
}, bounds: {
    left: number;
    top: number;
    width: number;
    height: number;
}): Gaze;
/** Time-based easing, shared by the studio and paused or playing app characters. */
export declare function easeGaze(current: Gaze, target: Gaze, seconds: number, immediate?: boolean): Gaze;
/** Keep the complete white dot inside the eye, with a small margin at every angle. */
export declare function irisOffset(radius: number, gaze: Gaze, eyeRotation?: number, cheeks?: boolean | number): Gaze;
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