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using UnityEngine;
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using System.Collections;
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namespace TMPro.Examples
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{
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public class CameraController : MonoBehaviour
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{
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public enum CameraModes { Follow, Isometric, Free }
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private Transform cameraTransform;
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private Transform dummyTarget;
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public Transform CameraTarget;
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public float FollowDistance = 30.0f;
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public float MaxFollowDistance = 100.0f;
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public float MinFollowDistance = 2.0f;
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public float ElevationAngle = 30.0f;
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public float MaxElevationAngle = 85.0f;
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public float MinElevationAngle = 0f;
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public float OrbitalAngle = 0f;
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public CameraModes CameraMode = CameraModes.Follow;
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public bool MovementSmoothing = true;
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public bool RotationSmoothing = false;
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private bool previousSmoothing;
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public float MovementSmoothingValue = 25f;
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public float RotationSmoothingValue = 5.0f;
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public float MoveSensitivity = 2.0f;
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private Vector3 currentVelocity = Vector3.zero;
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private Vector3 desiredPosition;
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private float mouseX;
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private float mouseY;
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private Vector3 moveVector;
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private float mouseWheel;
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// Controls for Touches on Mobile devices
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//private float prev_ZoomDelta;
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private const string event_SmoothingValue = "Slider - Smoothing Value";
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private const string event_FollowDistance = "Slider - Camera Zoom";
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void Awake()
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{
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if (QualitySettings.vSyncCount > 0)
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Application.targetFrameRate = 60;
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else
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Application.targetFrameRate = -1;
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if (Application.platform == RuntimePlatform.IPhonePlayer || Application.platform == RuntimePlatform.Android)
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Input.simulateMouseWithTouches = false;
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cameraTransform = transform;
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previousSmoothing = MovementSmoothing;
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}
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// Use this for initialization
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void Start()
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{
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if (CameraTarget == null)
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{
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// If we don't have a target (assigned by the player, create a dummy in the center of the scene).
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dummyTarget = new GameObject("Camera Target").transform;
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CameraTarget = dummyTarget;
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}
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}
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// Update is called once per frame
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void LateUpdate()
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{
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GetPlayerInput();
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// Check if we still have a valid target
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if (CameraTarget != null)
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{
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if (CameraMode == CameraModes.Isometric)
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{
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desiredPosition = CameraTarget.position + Quaternion.Euler(ElevationAngle, OrbitalAngle, 0f) * new Vector3(0, 0, -FollowDistance);
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}
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else if (CameraMode == CameraModes.Follow)
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{
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desiredPosition = CameraTarget.position + CameraTarget.TransformDirection(Quaternion.Euler(ElevationAngle, OrbitalAngle, 0f) * (new Vector3(0, 0, -FollowDistance)));
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}
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else
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{
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// Free Camera implementation
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}
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if (MovementSmoothing == true)
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{
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// Using Smoothing
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cameraTransform.position = Vector3.SmoothDamp(cameraTransform.position, desiredPosition, ref currentVelocity, MovementSmoothingValue * Time.fixedDeltaTime);
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//cameraTransform.position = Vector3.Lerp(cameraTransform.position, desiredPosition, Time.deltaTime * 5.0f);
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}
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else
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{
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// Not using Smoothing
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cameraTransform.position = desiredPosition;
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}
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if (RotationSmoothing == true)
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cameraTransform.rotation = Quaternion.Lerp(cameraTransform.rotation, Quaternion.LookRotation(CameraTarget.position - cameraTransform.position), RotationSmoothingValue * Time.deltaTime);
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else
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{
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cameraTransform.LookAt(CameraTarget);
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}
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}
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}
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void GetPlayerInput()
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{
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moveVector = Vector3.zero;
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// Check Mouse Wheel Input prior to Shift Key so we can apply multiplier on Shift for Scrolling
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mouseWheel = Input.GetAxis("Mouse ScrollWheel");
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float touchCount = Input.touchCount;
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if (Input.GetKey(KeyCode.LeftShift) || Input.GetKey(KeyCode.RightShift) || touchCount > 0)
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{
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mouseWheel *= 10;
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if (Input.GetKeyDown(KeyCode.I))
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CameraMode = CameraModes.Isometric;
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if (Input.GetKeyDown(KeyCode.F))
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CameraMode = CameraModes.Follow;
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if (Input.GetKeyDown(KeyCode.S))
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MovementSmoothing = !MovementSmoothing;
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// Check for right mouse button to change camera follow and elevation angle
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if (Input.GetMouseButton(1))
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{
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mouseY = Input.GetAxis("Mouse Y");
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mouseX = Input.GetAxis("Mouse X");
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if (mouseY > 0.01f || mouseY < -0.01f)
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{
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ElevationAngle -= mouseY * MoveSensitivity;
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// Limit Elevation angle between min & max values.
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ElevationAngle = Mathf.Clamp(ElevationAngle, MinElevationAngle, MaxElevationAngle);
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}
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if (mouseX > 0.01f || mouseX < -0.01f)
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{
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OrbitalAngle += mouseX * MoveSensitivity;
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if (OrbitalAngle > 360)
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OrbitalAngle -= 360;
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if (OrbitalAngle < 0)
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OrbitalAngle += 360;
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}
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}
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// Get Input from Mobile Device
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if (touchCount == 1 && Input.GetTouch(0).phase == TouchPhase.Moved)
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{
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Vector2 deltaPosition = Input.GetTouch(0).deltaPosition;
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// Handle elevation changes
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if (deltaPosition.y > 0.01f || deltaPosition.y < -0.01f)
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{
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ElevationAngle -= deltaPosition.y * 0.1f;
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// Limit Elevation angle between min & max values.
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ElevationAngle = Mathf.Clamp(ElevationAngle, MinElevationAngle, MaxElevationAngle);
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}
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// Handle left & right
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if (deltaPosition.x > 0.01f || deltaPosition.x < -0.01f)
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{
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OrbitalAngle += deltaPosition.x * 0.1f;
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if (OrbitalAngle > 360)
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OrbitalAngle -= 360;
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if (OrbitalAngle < 0)
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OrbitalAngle += 360;
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}
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}
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// Check for left mouse button to select a new CameraTarget or to reset Follow position
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if (Input.GetMouseButton(0))
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{
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Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
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RaycastHit hit;
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if (Physics.Raycast(ray, out hit, 300, 1 << 10 | 1 << 11 | 1 << 12 | 1 << 14))
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{
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if (hit.transform == CameraTarget)
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{
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// Reset Follow Position
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OrbitalAngle = 0;
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}
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else
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{
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CameraTarget = hit.transform;
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OrbitalAngle = 0;
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MovementSmoothing = previousSmoothing;
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}
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}
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}
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if (Input.GetMouseButton(2))
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{
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if (dummyTarget == null)
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{
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// We need a Dummy Target to anchor the Camera
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dummyTarget = new GameObject("Camera Target").transform;
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dummyTarget.position = CameraTarget.position;
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dummyTarget.rotation = CameraTarget.rotation;
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CameraTarget = dummyTarget;
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previousSmoothing = MovementSmoothing;
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MovementSmoothing = false;
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}
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else if (dummyTarget != CameraTarget)
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{
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// Move DummyTarget to CameraTarget
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dummyTarget.position = CameraTarget.position;
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dummyTarget.rotation = CameraTarget.rotation;
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CameraTarget = dummyTarget;
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previousSmoothing = MovementSmoothing;
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MovementSmoothing = false;
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}
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mouseY = Input.GetAxis("Mouse Y");
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mouseX = Input.GetAxis("Mouse X");
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moveVector = cameraTransform.TransformDirection(mouseX, mouseY, 0);
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dummyTarget.Translate(-moveVector, Space.World);
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}
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}
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// Check Pinching to Zoom in - out on Mobile device
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if (touchCount == 2)
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{
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Touch touch0 = Input.GetTouch(0);
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Touch touch1 = Input.GetTouch(1);
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Vector2 touch0PrevPos = touch0.position - touch0.deltaPosition;
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Vector2 touch1PrevPos = touch1.position - touch1.deltaPosition;
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float prevTouchDelta = (touch0PrevPos - touch1PrevPos).magnitude;
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float touchDelta = (touch0.position - touch1.position).magnitude;
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float zoomDelta = prevTouchDelta - touchDelta;
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if (zoomDelta > 0.01f || zoomDelta < -0.01f)
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{
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FollowDistance += zoomDelta * 0.25f;
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// Limit FollowDistance between min & max values.
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FollowDistance = Mathf.Clamp(FollowDistance, MinFollowDistance, MaxFollowDistance);
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}
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}
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// Check MouseWheel to Zoom in-out
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if (mouseWheel < -0.01f || mouseWheel > 0.01f)
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{
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FollowDistance -= mouseWheel * 5.0f;
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// Limit FollowDistance between min & max values.
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FollowDistance = Mathf.Clamp(FollowDistance, MinFollowDistance, MaxFollowDistance);
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}
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}
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}
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}
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