Euler









How do I use Euler
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: 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: 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     }
File name: ThirdPersonCamera.cs Copy
190     void SetUpRotation( Vector3 centerPos, Vector3 headPos )
191     {
192         // Now it's getting hairy. The devil is in the details here, the big issue is jumping of course.
193         // * When jumping up and down we don't want to center the guy in screen space.
194         // This is important to give a feel for how high you jump and avoiding large camera movements.
195         //
196         // * At the same time we dont want him to ever go out of screen and we want all rotations to be totally smooth.
197         //
198         // So here is what we will do:
199         //
200         // 1. We first find the rotation around the y axis. Thus he is always centered on the y-axis
201         // 2. When grounded we make him be centered
202         // 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
203         // 4. When landing we smoothly interpolate towards centering him on screen
204         Vector3 cameraPos = cameraTransform.position;
205         Vector3 offsetToCenter = centerPos - cameraPos;
206
207         // Generate base rotation only around y-axis
208         Quaternion yRotation = Quaternion.LookRotation( new Vector3( offsetToCenter.x, 0, offsetToCenter.z ) );
209
210         Vector3 relativeOffset = Vector3.forward * distance + Vector3.down * height;
211         cameraTransform.rotation = yRotation * Quaternion.LookRotation( relativeOffset );
212
213         // Calculate the projected center position and top position in world space
214         Ray centerRay = m_CameraTransformCamera.ViewportPointToRay( new Vector3( 0.5f, 0.5f, 1 ) );
215         Ray topRay = m_CameraTransformCamera.ViewportPointToRay( new Vector3( 0.5f, clampHeadPositionScreenSpace, 1 ) );
216
217         Vector3 centerRayPos = centerRay.GetPoint( distance );
218         Vector3 topRayPos = topRay.GetPoint( distance );
219
220         float centerToTopAngle = Vector3.Angle( centerRay.direction, topRay.direction );
221
222         float heightToAngle = centerToTopAngle / ( centerRayPos.y - topRayPos.y );
223
224         float extraLookAngle = heightToAngle * ( centerRayPos.y - centerPos.y );
225         if( extraLookAngle < centerToTopAngle )
226         {
227             extraLookAngle = 0;
228         }
229         else
230         {
231             extraLookAngle = extraLookAngle - centerToTopAngle;
232             cameraTransform.rotation *= Quaternion.Euler( -extraLookAngle, 0, 0 );
233         }
234     }
File name: PlayerDiamond.cs Copy
79     void UpdateDiamondRotation()
80     {
81         m_Rotation += Time.deltaTime * 180f;
82         m_Rotation = m_Rotation % 360;
83
84         transform.rotation = Quaternion.Euler( 0, m_Rotation, 0 );
85     }
File name: PhotonTransformViewPositionControl.cs Copy
132     public Vector3 GetExtrapolatedPositionOffset()
133     {
134         float timePassed = (float)( PhotonNetwork.time - m_LastSerializeTime );
135
136         if( m_Model.ExtrapolateIncludingRoundTripTime == true )
137         {
138             timePassed += (float)PhotonNetwork.GetPing() / 1000f;
139         }
140
141         Vector3 extrapolatePosition = Vector3.zero;
142
143         switch( m_Model.ExtrapolateOption )
144         {
145         case PhotonTransformViewPositionModel.ExtrapolateOptions.SynchronizeValues:
146             Quaternion turnRotation = Quaternion.Euler( 0, m_SynchronizedTurnSpeed * timePassed, 0 );
147             extrapolatePosition = turnRotation * ( m_SynchronizedSpeed * timePassed );
148             break;
149         case PhotonTransformViewPositionModel.ExtrapolateOptions.FixedSpeed:
150             Vector3 moveDirection = ( m_NetworkPosition - GetOldestStoredNetworkPosition() ).normalized;
151
152             extrapolatePosition = moveDirection * m_Model.ExtrapolateSpeed * timePassed;
153             break;
154         case PhotonTransformViewPositionModel.ExtrapolateOptions.EstimateSpeedAndTurn:
155             Vector3 moveDelta = ( m_NetworkPosition - GetOldestStoredNetworkPosition() ) * PhotonNetwork.sendRateOnSerialize;
156             extrapolatePosition = moveDelta * timePassed;
157             break;
158         }
159
160         return extrapolatePosition;
161     }
File name: RotateCamera.cs Copy
30  void Start() {
31   pivotEulers = pivotTransform.rotation.eulerAngles;
32   EnableInput();
33   inputManager = InputManager.Instance;
34  }
File name: RotateCamera.cs Copy
48  protected void Update() {
49   if (!rotate) return;
50   lookAngleY += inputManager.MouseAxis.x * horizAngleMove;
51   newRotY = Quaternion.Euler(0f,lookAngleY,0f);
52
53   lookAngleX += inputManager.MouseAxis.y * vertAngleMove;
54   lookAngleX = Mathf.Clamp(lookAngleX, -xAngleMin, xAngleMax);
55   newRotX = Quaternion.Euler(lookAngleX, pivotEulers.y, pivotEulers.z);
56
57   if (turnSmoothing > 0) {
58    pivotTransform.localRotation = Quaternion.Slerp(pivotTransform.localRotation, newRotX, turnSmoothing * Time.deltaTime);
59    transform.localRotation = Quaternion.Slerp(transform.localRotation, newRotY, turnSmoothing * Time.deltaTime);
60   } else {
61    transform.localRotation = newRotY;
62    pivotTransform.localRotation = newRotX;
63   }
64  }
File name: SwitchAngle.cs Copy
85  private void SetCameraPosRot(Vector3 pos, Vector3 rot) {
86   rotateCamera.transform.position = pos;
87   rotateCamera.transform.eulerAngles = rot;
88  }

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