constants.ts

import type { TMat2D } from './typedefs';
// use this syntax so babel plugin see this import here
import { version } from '../package.json';

export const VERSION = version;
// eslint-disable-next-line @typescript-eslint/no-empty-function
export function noop() {}
export const halfPI = Math.PI / 2;
export const twoMathPi = Math.PI * 2;
export const PiBy180 = Math.PI / 180;
export const iMatrix = Object.freeze([1, 0, 0, 1, 0, 0]) as TMat2D;
export const DEFAULT_SVG_FONT_SIZE = 16;
export const ALIASING_LIMIT = 2;

/* "magic number" for bezier approximations of arcs (http://itc.ktu.lt/itc354/Riskus354.pdf) */
export const kRect = 1 - 0.5522847498;

export const LEFT_CLICK = 1;
export const MIDDLE_CLICK = 2;
export const RIGHT_CLICK = 3;

export const CENTER = 'center';
export const LEFT = 'left';
export const TOP = 'top';
export const BOTTOM = 'bottom';
export const RIGHT = 'right';
export const NONE = 'none';

export const reNewline = /\r?\n/;