//******************************************************************************************************//  MouseOrbit.cs - Gbtc////  Copyright © 2015, Grid Protection Alliance.  All Rights Reserved.////  Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See//  the NOTICE file distributed with this work for additional information regarding copyright ownership.//  The GPA licenses this file to you under the MIT License (MIT), the "License"; you may not use this//  file except in compliance with the License. You may obtain a copy of the License at:////      http://www.opensource.org/licenses/MIT////  Unless agreed to in writing, the subject software distributed under the License is distributed on an//  "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the//  License for the specific language governing permissions and limitations.////  Code Modification History://  ----------------------------------------------------------------------------------------------------//  11/29/2012 - J. Ritchie Carroll//       Generated original version of source code.////****************************************************************************************************** using UnityEngine; // ReSharper disable once CheckNamespacepublic class MouseOrbit : MonoBehaviour{    public Transform target;    public float distance = 50.0F;    public float xSpeed = 300.0F;    public float ySpeed = 300.0F;    public int zoomRate = 50;    public int mouseDownFrames = 10;    public float minX = -9999.0F;    public float arrowSpeed = 0.15F;    public bool isActive = true;     private float x;    private float y;    private float xOffset;    private float yOffset;    private bool buttonDown;    private bool rotate;    private int downCount;     public MouseOrbit()    {        yOffset = 0.0F;        xOffset = 0.0F;    }     // Use this for initialization    protected void Start()    {        Vector3 angles = transform.eulerAngles;        x = angles.y;        y = angles.x;    }     // Update is called once per frame    protected void Update()    {        if (target && isActive)        {            // Handle pinch gesture            if (Input.touchCount >= 2)            {                Touch touch0 = Input.GetTouch(0);                Touch touch1 = Input.GetTouch(1);                 Vector2 curDist = touch0.position - touch1.position;                Vector2 prevDist = (touch0.position - touch0.deltaPosition) - (touch1.position - touch1.deltaPosition);                 float delta = (curDist.magnitude - prevDist.magnitude) / (zoomRate / 5.0F);                distance -= delta;            }            else            {                // Mouse button functions also work for touch input on Android                if (Input.GetMouseButtonDown(0))                {                    buttonDown = true;                }                else if (Input.GetMouseButtonUp(0))                {                    buttonDown = false;                }                 // Only start rotation after a few frames - this allows human                // mutitouch interaction a moment to enage since it's rare that                // two fingers will actually hit the screen at the exact same time                if (buttonDown)                {                    downCount++;                    rotate = (downCount >= mouseDownFrames);                }                else                {                    downCount = 0;                    rotate = false;                }                 if (rotate)                {                    if (Input.mousePosition.x > minX)                    {                        x += Input.GetAxis("Mouse X") * xSpeed * Time.deltaTime;                        y -= Input.GetAxis("Mouse Y") * ySpeed * Time.deltaTime;                    }                }                 distance += -Input.GetAxis("Mouse ScrollWheel") * Time.deltaTime * zoomRate * Mathf.Abs(distance);            }             Quaternion rotation = Quaternion.Euler(y, x, 0);            Vector3 distance3 = new Vector3(0.0F, 0.0F, -distance);            Vector3 position = rotation * distance3 + target.position;             // Handle X/Y camera offset movement based on arrow keys            if (Input.GetKey(KeyCode.RightArrow))                xOffset -= arrowSpeed;            else if (Input.GetKey(KeyCode.LeftArrow))                xOffset += arrowSpeed;             if (Input.GetKey(KeyCode.UpArrow))                yOffset -= arrowSpeed;            else if (Input.GetKey(KeyCode.DownArrow))                yOffset += arrowSpeed;             position.x += xOffset;            position.y += yOffset;             transform.rotation = rotation;            transform.position = position;        }    }}