declare type TArrowHeadParameters = {
    baseMidX: number;
    baseMidY: number;
    leftX: number;
    leftY: number;
    rightX: number;
    rightY: number;
};
declare function calcArrowHeadParameters(tipX: number, tipY: number, angleRadian: number, headLength: number, headWidth: number, headDepth: number): TArrowHeadParameters;
export declare const geometryHelpers: {
    calcArrowHeadParameters: typeof calcArrowHeadParameters;
};
export {};