Unity 2017 On ubuntu - Orbital Motion

OrbitalMotion.cs

# The sourcce

```
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class OrbitalMoton : MonoBehaviour {

        public Transform oentity;
        public Ellipse opath;

        [Range(0f,1f)]
        public float oprogress = 0f;
        float ominimum = 0.1f;
        public float operiod = 3f; // the time around in seconds
        public bool  oactive = true;

        // Use this for initialization
        void Start () {
                if (operiod < ominimum)
                {
                        operiod = ominimum;
                }
                if (oentity == null)
                {
                        oactive = false;
                        return;
                }
                // start orbit animation
                SetPosition();
                StartCoroutine(AnimateOrbit());

        }
        void SetPosition(){
                // set orbitng object position
                Vector2 position = opath.Evaluate (oprogress);
                oentity.localPosition = new Vector3(position.x, 0, position.y);
        }
        IEnumerator AnimateOrbit() {
                float speed = 1f / operiod;
                while (oactive)
                {
                        oprogress += Time.deltaTime * speed;
                        oprogress %= 1f;
                        SetPosition();
                        // yield trigger next FRAME processing
                        yield return null;
                }
        }

}
```