export declare const SQRT_2: number;
export declare const SQRT_3: number;
export declare const ISO_NONE = 0;
export declare const ISO_LEFT = 1;
export declare const ISO_RIGHT = 2;
export declare const ISO_VERTICAL = 4;
export declare const ISO_HORIZONTAL = 8;
export declare const ISO_DEFAULT_SPACING = 40;
export declare const ISO_DEFAULT_ORIENTATION: number;
export declare const ISO_DEFAULT_SIDE_COLOR = "grey";
export declare const ISO_DEFAULT_TOP_COLOR = "lightgrey";