gxc-math/lib/src/functions/index.ts

import { Rectangle, Transform } from "../models";

export const degToRad = (deg: number) => (deg * Math.PI) / 180;
export const radToDeg = (radians: number) => radians * (180 / Math.PI);

export const getBounds = (rectangle: Rectangle, transform: Transform) => {
  const { top, left, bottom, right } = rectangle;

  const matrix2d = transform.toMatrix2D();

  const topLeft = matrix2d.transformPoint({ x: left, y: top });
  const bottomRight = matrix2d.transformPoint({ x: right, y: bottom });

  return Rectangle.fromPoints(topLeft.x, topLeft.y, bottomRight.x, bottomRight.y);
};