import { Vector3 } from 'three';

export const X_AXIS = new Vector3(1, 0, 0);
export const Y_AXIS = new Vector3(0, 1, 0);
export const Z_AXIS = new Vector3(0, 0, 1);

export function degreesToRadians(degrees: number): number {
  return degrees * (Math.PI / 180);
}

export const calculateVec3FromLatLon = (lat: number, lon: number, radius: number): Vector3 => {
  const phi = degreesToRadians(90 - lat);
  const theta = degreesToRadians(lon + 90);
  const rho = radius;

  const x = -(Math.sin(phi) * Math.cos(theta) * rho);
  const y = Math.cos(phi) * rho;
  const z = Math.sin(phi) * Math.sin(theta) * rho;

  return new Vector3(x, y, z);
};