export declare const PI: number;
export declare const TAU: number;
export declare const HALF_PI: number;
export declare const THIRD_PI: number;
export declare const QUARTER_PI: number;
export declare const SIXTH_PI: number;
export declare const INV_PI: number;
export declare const INV_TAU: number;
export declare const INV_HALF_PI: number;
export declare const DEG2RAD: number;
export declare const RAD2DEG: number;
export declare const PHI: number;
export declare const SQRT2: number;
export declare const SQRT3: number;
export declare const SQRT2_2: number;
export declare const SQRT3_2: number;
export declare const THIRD: number;
export declare const TWO_THIRD: number;
export declare const SIXTH: number;
export declare let EPS: number;
export type Crossing = 
/**
 * lines A & B are equal
 */
"equal"
/**
 * lines A & B are flat (all same values)
 */
 | "flat"
/**
 * line A crossed under B
 */
 | "under"
/**
 * line A crossed over B
 */
 | "over" | "other";
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