/** * the author: D2og * date: 2019-03-06 * what it does: lens control (mimic the Unity editor) * how to use it: just put the script on the camera * operation method: 1. Right click and press + mouse to move so that the lens to rotate * 2. Press the mouse wheel + mouse to move so that the lens to translation * 3. Right mouse button + keyboard w s a d (+leftShift) so that the lens to move * 4. the mouse wheel rolling so that the lens forward and backward * * 作用:镜头控制（模仿Unity编辑器的操作进行控制） * 使用方法: 将该脚本放到摄像机上即可 * 操作方法: 1、右键按下+鼠标移动 镜头旋转 * 2、鼠标滚轮按下+鼠标移动 镜头平移 * 3、鼠标右键按下+键盘wsad (+leftShift) 镜头前进，后退，向左，向右（2倍速） * 4、鼠标滚轮滚动 镜头前进，后退 */ using System.Collections; using System.Collections.Generic; using UnityEngine; public class CameraOperate : MonoBehaviour { [Tooltip("Mouse wheel rolling control lens please enter, the speed of the back")] [Range(0.5f, 10f)] public float scrollSpeed = 10f; [Tooltip("Right mouse button control lens X axis rotation speed")] [Range(0.5f, 2f)] public float rotateXSpeed = 1f; [Tooltip("Right mouse button control lens Y axis rotation speed")] [Range(0.5f, 2f)] public float rotateYSpeed = 1f; [Tooltip("Mouse wheel press, lens translation speed")] [Range(0.5f, 2f)] public float moveSpeed = 1f; [Tooltip("The keyboard controls how fast the camera moves")] [Range(0.5f, 2f)] public float keyMoveSpeed = 1f; //Whether the lens control operation is performed //是否进行镜头控制操作 public bool operate = true; //Whether keyboard control lens operation is performed //是否进行键盘控制镜头操作 public bool isKeyOperate = true; //Whether currently in rotation //目前是否在轮换 private bool isRotate = false; //Is currently in panning //目前在平移吗 private bool isMove = false; //Camera transform component cache //摄像机转换组件缓存 private Transform m_transform; //The initial position of the camera at the beginning of the operation //摄像机在开始进行操作时摄像机初始的位置 private Vector3 traStart; //The initial position of the mouse as the camera begins to operate //摄像机在开始进行操作时鼠标初始的位置 private Vector3 mouseStart; //Is the camera facing down //摄像机是否镜头朝下 private bool isDown = false; // Start is called before the first frame update void Start() { m_transform = transform; } // Update is called once per frame void Update() { if (operate) { //When in the rotation state, and the right mouse button is released, then exit the rotation state //当处于旋转状态，且鼠标右键放开，则退出旋转状态 if (isRotate && Input.GetMouseButtonUp(1)) { isRotate = false; } //When it is in the translation state, and the mouse wheel is released, it will exit the translation state //当处于平移状态，且鼠标滚轮放开，则退出平移状态 if (isMove && Input.GetMouseButtonUp(2)) { isMove = false; } //Whether it's in a rotational state //是否处于旋转状态 if (isRotate) { //Gets the offset of the mouse on the screen //获取鼠标在屏幕上的偏移量 Vector3 offset = Input.mousePosition - mouseStart; // whether the lens is facing down //是否镜头朝下 if (isDown) { // the final rotation Angle = initial Angle + offset, 0.3f coefficient makes the rotation speed normal when rotateYSpeed, rotateXSpeed is 1 //最后的旋转角度 = 初始角度 + 偏移量，0.3f系数使得当rotateYSpeed，rotateXSpeed为1的时候，旋转速度正常 m_transform.rotation = Quaternion.Euler(traStart + new Vector3(offset.y * 0.3f * rotateYSpeed, -offset.x * 0.3f * rotateXSpeed, 0)); } else { // final rotation Angle = initial Angle + offset //最后的旋转角度 = 初始角度 + 偏移量 m_transform.rotation = Quaternion.Euler(traStart + new Vector3(-offset.y * 0.3f * rotateYSpeed, offset.x * 0.3f * rotateXSpeed, 0)); } // simulate the unity editor operation: right click, the keyboard can control the lens movement //模仿unity编辑器操作：右键按下，键盘可以控制镜头移动 if (isKeyOperate) { float speed = keyMoveSpeed; // press LeftShift to make speed *2 //按下LeftShift使得速度*2 if (Input.GetKey(KeyCode.LeftShift)) { speed = 2f * speed; } // press W on the keyboard to move the camera forward //键盘W键按下，镜头前进 if (Input.GetKey(KeyCode.W)) { m_transform.position += m_transform.forward * Time.deltaTime * 10f * speed; } // press the S key on the keyboard to back up the camera //键盘S键按下，镜头后退 if (Input.GetKey(KeyCode.S)) { m_transform.position -= m_transform.forward * Time.deltaTime * 10f * speed; } // press A on the keyboard and the camera will turn left //键盘A键按下，镜头向左 if (Input.GetKey(KeyCode.A)) { m_transform.position -= m_transform.right * Time.deltaTime * 10f * speed; } // press D on the keyboard to turn the camera to the right //键盘D键按下，镜头向右 if (Input.GetKey(KeyCode.D)) { m_transform.position += m_transform.right * Time.deltaTime * 10f * speed; } } } // press the right mouse button to enter the rotation state //鼠标右键按下，表示进入旋转状态 else if (Input.GetMouseButtonDown(1)) { // enter the rotation state //进入旋转状态 isRotate = true; // record the initial position of the mouse in order to calculate the offset //记录鼠标初始位置，为了计算偏移量 mouseStart = Input.mousePosition; // record the initial mouse Angle //记录鼠标初始角度 traStart = m_transform.rotation.eulerAngles; // to determine whether the lens is facing down (the Y-axis is <0 according to the position of the object facing up),-0.0001f is a special case when x rotates 90 //判断镜头是否朝下(根据物体朝上的位置的y轴是<0),-0.0001f是x旋转90的时候的特例 isDown = m_transform.up.y < -0.0001f ? true : false; } // whether it is in the translation state //是否处于平移状态 if (isMove) { // mouse offset on the screen //鼠标在屏幕上的偏移量 Vector3 offset = Input.mousePosition - mouseStart; // final position = initial position + offset //最终位置 = 初始位置 + 偏移量 m_transform.position = traStart + m_transform.up * -offset.y * 0.1f * moveSpeed + m_transform.right * -offset.x * 0.1f * moveSpeed; } // click the mouse wheel to enter translation mode //鼠标滚轮按下，进入平移模式 else if (Input.GetMouseButtonDown(2)) { // translation begins //平移开始 isMove = true; // record the initial position of the mouse //记录鼠标初始位置 mouseStart = Input.mousePosition; // record the initial position of the camera //记录摄像机初始位置 traStart = m_transform.position; } // how much did the roller roll //滚轮滚动了多少 float scroll = Input.GetAxis("Mouse ScrollWheel"); // scroll to scroll or not //滚动是否滚动 if (scroll != 0) { // position = current position + scroll amount //位置 = 当前位置 + 滚动量 m_transform.position += m_transform.forward * scroll * 1000f * Time.deltaTime * scrollSpeed; } } } }