mskalign-canvas/lib/src/utils/calcGraph.d.ts

一个用于图片标注的javascript库，基于canvas，简单轻量，支持矩形、多边形、点、折线、圆形。

import type { Point, OffsetPoint, WH, RememberPointsType } from '../types';
import type { AllShape } from '../index';
export declare function sortByHeightPoint(coorData: AllShape[], isSort?: boolean, dataType?: string): AllShape[];
/**
 * 根据两点求出垂线过第三点的直线的交点
 * @ param pt1 直线上的第一个点
 * @ param pt2 直线上的第二个点
 * @ param pt3 垂线上的点（当前鼠标的点）
 * @ return 返回点到直线的垂直交点坐标的延长线
 */
export declare function crossCor(pt1: Point, pt2: Point, pt3: Point, length: number): number[];
export declare function getMiddlePoint(points: Point[], scale?: number): Point;
/**
 * @description: 计算两条线的夹角
 * @param {*} point1 line1的起点坐标
 * @param {*} point2 line1的终点坐标
 * @param {*} point3 line2的起点坐标
 * @param {*} point4 line2的终点坐标
 * @return {*}
 */
export declare function getTwoLineAngle([point1, point2, point3, point4]: Point[]): number;
/**
 * @description: 获取一个点到一条线的垂直像素距离和垂直点坐标
 * @param {*} point1 直线的起点坐标
 * @param {*} point2 直线的终点坐标
 * @param {*} point3 点的坐标
 * @return {*}
 */
export declare function getDistanceP2L(point1: Point, point2: Point, point3: Point): {
    distance: number;
    pedal: {
        x: number;
        y: number;
    };
};
/**
 * @description: 获取两点之间的像素距离
 * @param {*} point1 点1
 * @param {*} point2 点2
 * @return {*} 像素距离
 */
export declare function getTwoPointDistance(point1: Point, point2: Point): number;
/**
 * @description: 四边形的对角线中心点
 * @param {*} point1
 * @param {*} point3
 * @param {*} point2
 * @param {*} point4
 * @return {*} 对角线中心点
 */
export declare function getQuadrilateralCenter(point1: Point, point2: Point, point4: Point, point3: Point): false | {
    x: number;
    y: number;
};
export declare function adjustBrightnessLinear(imageData: any, brightnessFactor: number): any;
export declare function changeLuminance(imgData: any, value: number): any;
/**
 * 修改亮度
 */
export declare function rgb2hsv(arr: number[]): number[];
export declare function hsv2rgb(hsv: number[]): number[];
export declare function getNewCoor(activeShape: AllShape, { offsetX, offsetY }: OffsetPoint, { w, h }: WH, remember: RememberPointsType): any;
/**
 * 判断是否在椭圆内
 * @param targetPoint 坐标
 * @param centerPoint 圆心
 * @param radiusX 长半径
 * @param radiusY 短半径
 * @param rotation 旋转角度
 * @returns 布尔值
 */
export declare const isPointInRotatedEllipse: (targetPoint: Point, centerPoint: Point, radiusX: number, radiusY: number, rotation: number, { originX, originY, scale, creating }: any) => boolean;
/**
 * 判断是否在圆内
 * @param point 坐标
 * @param center 圆心
 * @param r 半径
 * @param needScale 是否为圆形点击检测
 * @creating 是否为创建中
 * @returns 布尔值
 */
export declare const isPointInCircle: (point: Point, center: Point, r: number, { originX, originY, scale, creating }: any) => boolean;
export declare const calculateRotation: (targetPoint: Point, centerPoint: Point) => number;
export declare const rotatePoint: (centerPoint: Point, theta: number, targetPoint: Point) => Point;
export declare function getEllipseEndpoints(centerPoint: Point, rotation: number, points: Point[]): Point[];
export declare const getRealAngle: (rotation: number) => number;