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