export function pointToLine(x1: number, y1: number, x2: number, y2: number, d: number): {
    x: number;
    y: number;
};
export function lineIntersect(x1: number, y1: number, x2: number, y2: number, x3: number, y3: number, x4: number, y4: number): {
    x: number;
    y: number;
};
export function rotate(cx: any, cy: any, x: any, y: any, angle: any, anticlockWise?: boolean): any[];
export function degToRad(deg: any): number;
export function getAngleBetween2Points(x1: any, y1: any, x2: any, y2: any): number;
export function getCentroid(arr: any): any;
export function diff(v1: any, v2: any): number;
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