import { max, min } from '@antv/util';
import { BBox } from './types';

/**
 * 两点之间的距离
 * @param {number} x1 起始点 x
 * @param {number} y1 起始点 y
 * @param {number} x2 结束点 x
 * @param {number} y2 结束点 y
 * @return {number} 距离
 */
export function distance(x1: number, y1: number, x2: number, y2: number) {
  const dx = x1 - x2;
  const dy = y1 - y2;
  return Math.sqrt(dx * dx + dy * dy);
}

export function isNumberEqual(v1: number, v2: number) {
  return Math.abs(v1 - v2) < 0.001;
}

export function getBBoxByArray(xArr: number[], yArr: number[]): BBox {
  const minX = min(xArr);
  const minY = min(yArr);
  const maxX = max(xArr);
  const maxY = max(yArr);
  return {
    x: minX,
    y: minY,
    width: maxX - minX,
    height: maxY - minY,
  };
}

export function getBBoxRange(x1: number, y1: number, x2: number, y2: number) {
  return {
    minX: min([x1, x2]),
    maxX: max([x1, x2]),
    minY: min([y1, y2]),
    maxY: max([y1, y2]),
  };
}

export function piMod(angle: number) {
  return (angle + Math.PI * 2) % (Math.PI * 2);
}