import { PointLike } from '@antv/g-lite';
export declare function isInvalidRect(p: PointLike, q: PointLike, threshold: number): boolean;
export declare function isNearPoint(p: PointLike, q: PointLike, threshold: number): boolean;
/**
 * {\displaystyle \operatorname {distance} (P,\theta ,(x_{0},y_{0}))=|\cos(\theta )(P_{y}-y_{0})-\sin(\theta )(P_{x}-x_{0})|}
 */
export declare function distanceFromPointToLine(p: PointLike, rad: number, t: PointLike): number;
export declare function getABC(p1: PointLike, p2: PointLike): {
    A: number;
    B: number;
    C: number;
};
export declare function getFootOfPerpendicular(p: PointLike, A: number, B: number, C: number): {
    x: number;
    y: number;
};
export declare function lineIntersect(p1: PointLike, p2: PointLike, p3: PointLike, p4: PointLike): {
    x: number;
    y: number;
    seg1: boolean;
    seg2: boolean;
};
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