Rotation









How do I use Rotation
Below are practical examples compiled from projects for learning and reference purposes

Featured Snippets


File name: PickupCamera.cs Copy
94     void Apply( Transform dummyTarget, Vector3 dummyCenter )
95     {
96         // Early out if we don't have a target
97         if( !controller )
98             return;
99
100         Vector3 targetCenter = _target.position + centerOffset;
101         Vector3 targetHead = _target.position + headOffset;
102
103         // DebugDrawStuff();
104
105         // Calculate the current & target rotation angles
106         float originalTargetAngle = _target.eulerAngles.y;
107         float currentAngle = cameraTransform.eulerAngles.y;
108
109         // Adjust real target angle when camera is locked
110         float targetAngle = originalTargetAngle;
111
112         // When pressing Fire2 (alt) the camera will snap to the target direction real quick.
113         // It will stop snapping when it reaches the target
114         if( Input.GetButton( "Fire2" ) )
115             snap = true;
116
117         if( snap )
118         {
119             // We are close to the target, so we can stop snapping now!
120             if( AngleDistance( currentAngle, originalTargetAngle ) < 3.0f )
121                 snap = false;
122
123             currentAngle = Mathf.SmoothDampAngle( currentAngle, targetAngle, ref angleVelocity, snapSmoothLag, snapMaxSpeed );
124         }
125         // Normal camera motion
126         else
127         {
128             if( controller.GetLockCameraTimer() < lockCameraTimeout )
129             {
130                 targetAngle = currentAngle;
131             }
132
133             // Lock the camera when moving backwards!
134             // * It is really confusing to do 180 degree spins when turning around.
135             if( AngleDistance( currentAngle, targetAngle ) > 160 && controller.IsMovingBackwards() )
136                 targetAngle += 180;
137
138             currentAngle = Mathf.SmoothDampAngle( currentAngle, targetAngle, ref angleVelocity, angularSmoothLag, angularMaxSpeed );
139         }
140
141
142         // When jumping don't move camera upwards but only down!
143         if( controller.IsJumping() )
144         {
145             // We'd be moving the camera upwards, do that only if it's really high
146             float newTargetHeight = targetCenter.y + height;
147             if( newTargetHeight < targetHeight || newTargetHeight - targetHeight > 5 )
148                 targetHeight = targetCenter.y + height;
149         }
150         // When walking always update the target height
151         else
152         {
153             targetHeight = targetCenter.y + height;
154         }
155
156         // Damp the height
157         float currentHeight = cameraTransform.position.y;
158         currentHeight = Mathf.SmoothDamp( currentHeight, targetHeight, ref heightVelocity, heightSmoothLag );
159
160         // Convert the angle into a rotation, by which we then reposition the camera
161         Quaternion currentRotation = Quaternion.Euler( 0, currentAngle, 0 );
162
163         // Set the position of the camera on the x-z plane to:
164         // distance meters behind the target
165         cameraTransform.position = targetCenter;
166         cameraTransform.position += currentRotation * Vector3.back * distance;
167
168         // Set the height of the camera
169         cameraTransform.position = new Vector3( cameraTransform.position.x, currentHeight, cameraTransform.position.z );
170
171         // Always look at the target
172         SetUpRotation( targetCenter, targetHead );
173     }
File name: PickupCamera.cs Copy
198     void SetUpRotation( Vector3 centerPos, Vector3 headPos )
199     {
200         // Now it's getting hairy. The devil is in the details here, the big issue is jumping of course.
201         // * When jumping up and down we don't want to center the guy in screen space.
202         // This is important to give a feel for how high you jump and avoiding large camera movements.
203         //
204         // * At the same time we dont want him to ever go out of screen and we want all rotations to be totally smooth.
205         //
206         // So here is what we will do:
207         //
208         // 1. We first find the rotation around the y axis. Thus he is always centered on the y-axis
209         // 2. When grounded we make him be centered
210         // 3. When jumping we keep the camera rotation but rotate the camera to get him back into view if his head is above some threshold
211         // 4. When landing we smoothly interpolate towards centering him on screen
212         Vector3 cameraPos = cameraTransform.position;
213         Vector3 offsetToCenter = centerPos - cameraPos;
214
215         // Generate base rotation only around y-axis
216         Quaternion yRotation = Quaternion.LookRotation( new Vector3( offsetToCenter.x, 0, offsetToCenter.z ) );
217
218         Vector3 relativeOffset = Vector3.forward * distance + Vector3.down * height;
219         cameraTransform.rotation = yRotation * Quaternion.LookRotation( relativeOffset );
220
221         // Calculate the projected center position and top position in world space
222         Ray centerRay = m_CameraTransformCamera.ViewportPointToRay( new Vector3( 0.5f, 0.5f, 1 ) );
223         Ray topRay = m_CameraTransformCamera.ViewportPointToRay( new Vector3( 0.5f, clampHeadPositionScreenSpace, 1 ) );
224
225         Vector3 centerRayPos = centerRay.GetPoint( distance );
226         Vector3 topRayPos = topRay.GetPoint( distance );
227
228         float centerToTopAngle = Vector3.Angle( centerRay.direction, topRay.direction );
229
230         float heightToAngle = centerToTopAngle / ( centerRayPos.y - topRayPos.y );
231
232         float extraLookAngle = heightToAngle * ( centerRayPos.y - centerPos.y );
233         if( extraLookAngle < centerToTopAngle )
234         {
235             extraLookAngle = 0;
236         }
237         else
238         {
239             extraLookAngle = extraLookAngle - centerToTopAngle;
240             cameraTransform.rotation *= Quaternion.Euler( -extraLookAngle, 0, 0 );
241         }
242     }
File name: PickupController.cs Copy
151     void Update()
152     {
153         if (isControllable)
154         {
155             if (Input.GetButtonDown("Jump"))
156             {
157                 lastJumpButtonTime = Time.time;
158             }
159
160             UpdateSmoothedMovementDirection();
161
162             // Apply gravity
163             // - extra power jump modifies gravity
164             // - controlledDescent mode modifies gravity
165             ApplyGravity();
166
167             // Apply jumping logic
168             ApplyJumping();
169
170
171             // Calculate actual motion
172             Vector3 movement = moveDirection * moveSpeed + new Vector3(0, verticalSpeed, 0) + inAirVelocity;
173             movement *= Time.deltaTime;
174
175             //Debug.Log(movement.x.ToString("0.000") + ":" + movement.z.ToString("0.000"));
176
177             // Move the controller
178             CharacterController controller = GetComponent();
179             collisionFlags = controller.Move(movement);
180
181         }
182
183         // PUN: if a remote position is known, we smooth-move to it (being late(r) but smoother)
184         if (this.remotePosition != Vector3.zero)
185         {
186             transform.position = Vector3.Lerp(transform.position, this.remotePosition, Time.deltaTime * this.RemoteSmoothing);
187         }
188
189         velocity = (transform.position - lastPos)*25;
190
191         // ANIMATION sector
192         if (_animation)
193         {
194             if (_characterState == PickupCharacterState.Jumping)
195             {
196                 if (!jumpingReachedApex)
197                 {
198                     _animation[jumpPoseAnimation.name].speed = jumpAnimationSpeed;
199                     _animation[jumpPoseAnimation.name].wrapMode = WrapMode.ClampForever;
200                     _animation.CrossFade(jumpPoseAnimation.name);
201                 }
202                 else
203                 {
204                     _animation[jumpPoseAnimation.name].speed = -landAnimationSpeed;
205                     _animation[jumpPoseAnimation.name].wrapMode = WrapMode.ClampForever;
206                     _animation.CrossFade(jumpPoseAnimation.name);
207                 }
208             }
209             else
210             {
211                 if (_characterState == PickupCharacterState.Idle)
212                 {
213                     _animation.CrossFade(idleAnimation.name);
214                 }
215                 else if (_characterState == PickupCharacterState.Running)
216                 {
217                     _animation[runAnimation.name].speed = runMaxAnimationSpeed;
218                     if (this.isControllable)
219                     {
220                         _animation[runAnimation.name].speed = Mathf.Clamp(velocity.magnitude, 0.0f, runMaxAnimationSpeed);
221                     }
222                     _animation.CrossFade(runAnimation.name);
223                 }
224                 else if (_characterState == PickupCharacterState.Trotting)
225                 {
226                     _animation[walkAnimation.name].speed = trotMaxAnimationSpeed;
227                     if (this.isControllable)
228                     {
229                         _animation[walkAnimation.name].speed = Mathf.Clamp(velocity.magnitude, 0.0f, trotMaxAnimationSpeed);
230                     }
231                     _animation.CrossFade(walkAnimation.name);
232                 }
233                 else if (_characterState == PickupCharacterState.Walking)
234                 {
235                     _animation[walkAnimation.name].speed = walkMaxAnimationSpeed;
236                     if (this.isControllable)
237                     {
238                         _animation[walkAnimation.name].speed = Mathf.Clamp(velocity.magnitude, 0.0f, walkMaxAnimationSpeed);
239                     }
240                     _animation.CrossFade(walkAnimation.name);
241                 }
242
243                 if (_characterState != PickupCharacterState.Running)
244                 {
245                     _animation[runAnimation.name].time = 0.0f;
246                 }
247             }
248         }
249         // ANIMATION sector
250
251         // Set rotation to the move direction
252         if (IsGrounded())
253         {
254             // a specialty of this controller: you can disable rotation!
255             if (DoRotate)
256             {
257                 transform.rotation = Quaternion.LookRotation(moveDirection);
258             }
259         }
260         else
261         {
262             /* This causes choppy behaviour when colliding with SIDES
263              * Vector3 xzMove = velocity;
264             xzMove.y = 0;
265             if (xzMove.sqrMagnitude > 0.001f)
266             {
267                 transform.rotation = Quaternion.LookRotation(xzMove);
268             }*/
269         }
270
271         // We are in jump mode but just became grounded
272         if (IsGrounded())
273         {
274             lastGroundedTime = Time.time;
275             inAirVelocity = Vector3.zero;
276             if (jumping)
277             {
278                 jumping = false;
279                 SendMessage("DidLand", SendMessageOptions.DontRequireReceiver);
280             }
281         }
282
283         lastPos = transform.position;
284     }
File name: RPGCamera.cs Copy
30     void LateUpdate()
31     {
32         UpdateDistance();
33         UpdateZoom();
34         UpdatePosition();
35         UpdateRotation();
36     }
File name: RPGCamera.cs Copy
58     void UpdateRotation()
59     {
60         if( Input.GetMouseButton( 0 ) == true || Input.GetMouseButton( 1 ) == true )
61         {
62             transform.Rotate( 0, Input.GetAxis( "Mouse X" ) * TurnModifier, 0 );
63         }
64
65         if( Input.GetMouseButton( 1 ) == true && Target != null )
66         {
67             Target.rotation = Quaternion.Euler( 0, transform.rotation.eulerAngles.y, 0 );
68         }
69     }
File name: CubeExtra.cs Copy
21     // this method is called by PUN when this script is being "observed" by a PhotonView (setup in inspector)
22     public void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
23     {
24         // Always send transform (depending on reliability of the network view)
25         if (stream.isWriting)
26         {
27             Vector3 pos = transform.localPosition;
28             Quaternion rot = transform.localRotation;
29             stream.Serialize(ref pos);
30             stream.Serialize(ref rot);
31         }
32         // When receiving, buffer the information
33         else
34         {
35             // Receive latest state information
36             Vector3 pos = Vector3.zero;
37             Quaternion rot = Quaternion.identity;
38             stream.Serialize(ref pos);
39             stream.Serialize(ref rot);
40
41             lastMovement = (pos - latestCorrectPos) / (Time.time - lastTime);
42
43             lastTime = Time.time;
44             latestCorrectPos = pos;
45
46             transform.position = latestCorrectPos;
47         }
48     }
File name: CubeInter.cs Copy
34     void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
35     {
36         // Always send transform (depending on reliability of the network view)
37         if (stream.isWriting)
38         {
39             Vector3 pos = transform.localPosition;
40             Quaternion rot = transform.localRotation;
41             stream.Serialize(ref pos);
42             stream.Serialize(ref rot);
43         }
44         // When receiving, buffer the information
45         else
46         {
47    // Receive latest state information
48             Vector3 pos = Vector3.zero;
49             Quaternion rot = Quaternion.identity;
50             stream.Serialize(ref pos);
51             stream.Serialize(ref rot);
52
53             // Shift buffer contents, oldest data erased, 18 becomes 19, ... , 0 becomes 1
54             for (int i = m_BufferedState.Length - 1; i >= 1; i--)
55             {
56                 m_BufferedState[i] = m_BufferedState[i - 1];
57             }
58
59
60             // Save currect received state as 0 in the buffer, safe to overwrite after shifting
61             State state;
62             state.timestamp = info.timestamp;
63             state.pos = pos;
64             state.rot = rot;
65             m_BufferedState[0] = state;
66
67             // Increment state count but never exceed buffer size
68             m_TimestampCount = Mathf.Min(m_TimestampCount + 1, m_BufferedState.Length);
69
70             // Check integrity, lowest numbered state in the buffer is newest and so on
71             for (int i = 0; i < m_TimestampCount - 1; i++)
72             {
73                 if (m_BufferedState[i].timestamp < m_BufferedState[i + 1].timestamp)
74                     Debug.Log("State inconsistent");
75             }
76   }
77     }
File name: CubeInter.cs Copy
79     // This only runs where the component is enabled, which is only on remote peers (server/clients)
80     void Update()
81     {
82         double currentTime = PhotonNetwork.time;
83         double interpolationTime = currentTime - interpolationBackTime;
84         // We have a window of interpolationBackTime where we basically play
85         // By having interpolationBackTime the average ping, you will usually use interpolation.
86         // And only if no more data arrives we will use extrapolation
87
88         // Use interpolation
89         // Check if latest state exceeds interpolation time, if this is the case then
90         // it is too old and extrapolation should be used
91         if (m_BufferedState[0].timestamp > interpolationTime)
92         {
93     for (int i = 0; i < m_TimestampCount; i++)
94             {
95                 // Find the state which matches the interpolation time (time+0.1) or use last state
96                 if (m_BufferedState[i].timestamp <= interpolationTime || i == m_TimestampCount - 1)
97                 {
98                     // The state one slot newer (<100ms) than the best playback state
99                     State rhs = m_BufferedState[Mathf.Max(i - 1, 0)];
100                     // The best playback state (closest to 100 ms old (default time))
101                     State lhs = m_BufferedState[i];
102
103                     // Use the time between the two slots to determine if interpolation is necessary
104                     double length = rhs.timestamp - lhs.timestamp;
105                     float t = 0.0F;
106                     // As the time difference gets closer to 100 ms t gets closer to 1 in
107                     // which case rhs is only used
108                     if (length > 0.0001)
109                         t = (float)((interpolationTime - lhs.timestamp) / length);
110
111                     // if t=0 => lhs is used directly
112                     transform.localPosition = Vector3.Lerp(lhs.pos, rhs.pos, t);
113                     transform.localRotation = Quaternion.Slerp(lhs.rot, rhs.rot, t);
114      return;
115                 }
116             }
117         }
118         // Use extrapolation. Here we do something really simple and just repeat the last
119         // received state. You can do clever stuff with predicting what should happen.
120         else
121         {
122             State latest = m_BufferedState[0];
123
124             transform.localPosition = Vector3.Lerp(transform.localPosition, latest.pos, Time.deltaTime * 20 );
125             transform.localRotation = latest.rot;
126         }
127     }
File name: CubeLerp.cs Copy
35     public void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
36     {
37         if (stream.isWriting)
38         {
39             Vector3 pos = transform.localPosition;
40             Quaternion rot = transform.localRotation;
41             stream.Serialize(ref pos);
42             stream.Serialize(ref rot);
43         }
44         else
45         {
46             // Receive latest state information
47             Vector3 pos = Vector3.zero;
48             Quaternion rot = Quaternion.identity;
49
50             stream.Serialize(ref pos);
51             stream.Serialize(ref rot);
52
53             latestCorrectPos = pos; // save this to move towards it in FixedUpdate()
54             onUpdatePos = transform.localPosition; // we interpolate from here to latestCorrectPos
55             fraction = 0; // reset the fraction we alreay moved. see Update()
56
57             transform.localRotation = rot; // this sample doesn't smooth rotation
58         }
59     }
File name: ThirdPersonCamera.cs Copy
86     void Apply( Transform dummyTarget, Vector3 dummyCenter )
87     {
88         // Early out if we don't have a target
89         if( !controller )
90             return;
91
92         Vector3 targetCenter = _target.position + centerOffset;
93         Vector3 targetHead = _target.position + headOffset;
94
95         // DebugDrawStuff();
96
97         // Calculate the current & target rotation angles
98         float originalTargetAngle = _target.eulerAngles.y;
99         float currentAngle = cameraTransform.eulerAngles.y;
100
101         // Adjust real target angle when camera is locked
102         float targetAngle = originalTargetAngle;
103
104         // When pressing Fire2 (alt) the camera will snap to the target direction real quick.
105         // It will stop snapping when it reaches the target
106         if( Input.GetButton( "Fire2" ) )
107             snap = true;
108
109         if( snap )
110         {
111             // We are close to the target, so we can stop snapping now!
112             if( AngleDistance( currentAngle, originalTargetAngle ) < 3.0f )
113                 snap = false;
114
115             currentAngle = Mathf.SmoothDampAngle( currentAngle, targetAngle, ref angleVelocity, snapSmoothLag, snapMaxSpeed );
116         }
117         // Normal camera motion
118         else
119         {
120             if( controller.GetLockCameraTimer() < lockCameraTimeout )
121             {
122                 targetAngle = currentAngle;
123             }
124
125             // Lock the camera when moving backwards!
126             // * It is really confusing to do 180 degree spins when turning around.
127             if( AngleDistance( currentAngle, targetAngle ) > 160 && controller.IsMovingBackwards() )
128                 targetAngle += 180;
129
130             currentAngle = Mathf.SmoothDampAngle( currentAngle, targetAngle, ref angleVelocity, angularSmoothLag, angularMaxSpeed );
131         }
132
133
134         // When jumping don't move camera upwards but only down!
135         if( controller.IsJumping() )
136         {
137             // We'd be moving the camera upwards, do that only if it's really high
138             float newTargetHeight = targetCenter.y + height;
139             if( newTargetHeight < targetHeight || newTargetHeight - targetHeight > 5 )
140                 targetHeight = targetCenter.y + height;
141         }
142         // When walking always update the target height
143         else
144         {
145             targetHeight = targetCenter.y + height;
146         }
147
148         // Damp the height
149         float currentHeight = cameraTransform.position.y;
150         currentHeight = Mathf.SmoothDamp( currentHeight, targetHeight, ref heightVelocity, heightSmoothLag );
151
152         // Convert the angle into a rotation, by which we then reposition the camera
153         Quaternion currentRotation = Quaternion.Euler( 0, currentAngle, 0 );
154
155         // Set the position of the camera on the x-z plane to:
156         // distance meters behind the target
157         cameraTransform.position = targetCenter;
158         cameraTransform.position += currentRotation * Vector3.back * distance;
159
160         // Set the height of the camera
161         cameraTransform.position = new Vector3( cameraTransform.position.x, currentHeight, cameraTransform.position.z );
162
163         // Always look at the target
164         SetUpRotation( targetCenter, targetHead );
165     }

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