private void UpdateModelFromMouse(Vector mousePositionDelta)
{
if (this.cameraElement == null || !(this.cameraElement is ProjectionCameraElement))
{
return;
}
if (this.mouseMovementMode == CameraOrbitToolBehavior.MovementMode.Rotate)
{
this.totalAzimuthDelta += -mousePositionDelta.X / 2.0;
this.totalElevationDelta += -mousePositionDelta.Y / 2.0;
double angle1 = this.totalAzimuthDelta;
if (this.IsShiftDown)
{
angle1 = CameraOrbitToolBehavior.shiftSnapAngle * Math.Round(angle1 / CameraOrbitToolBehavior.shiftSnapAngle);
}
RotateTransform3D rotateTransform3D1 = new RotateTransform3D(Vector3D.DotProduct((Vector3D)this.cameraElement.GetComputedValue(ProjectionCameraElement.UpDirectionProperty), this.cameraInitialUp) >= 0.0 ? (Rotation3D) new AxisAngleRotation3D(this.cameraInitialUp, angle1) : (Rotation3D) new AxisAngleRotation3D(-this.cameraInitialUp, angle1), this.cameraInitialLookAt);
Point3D point = rotateTransform3D1.Transform(this.cameraInitialPosition);
Vector3D vector3D1 = rotateTransform3D1.Transform(this.cameraInitialUp);
Vector3D axis = Vector3D.CrossProduct(this.cameraInitialLookAt - point, vector3D1);
double angle2 = this.totalElevationDelta;
if (this.IsShiftDown)
{
angle2 = CameraOrbitToolBehavior.shiftSnapAngle * Math.Round(angle2 / CameraOrbitToolBehavior.shiftSnapAngle);
}
if (axis.LengthSquared == 0.0)
{
return;
}
RotateTransform3D rotateTransform3D2 = new RotateTransform3D((Rotation3D) new AxisAngleRotation3D(axis, angle2), this.cameraInitialLookAt);
Point3D point3D1 = rotateTransform3D2.Transform(point);
Vector3D vector3D2 = rotateTransform3D2.Transform(vector3D1);
Point3D point3D2 = RoundingHelper.RoundPosition(point3D1);
Vector3D vector3D3 = RoundingHelper.RoundDirection(vector3D2);
Vector3D vector3D4 = RoundingHelper.RoundDirection(this.cameraInitialLookAt - point3D2);
this.cameraElement.SetValue(ProjectionCameraElement.PositionProperty, (object)point3D2);
this.cameraElement.SetValue(ProjectionCameraElement.UpDirectionProperty, (object)vector3D3);
this.cameraElement.SetValue(ProjectionCameraElement.LookDirectionProperty, (object)vector3D4);
}
else
{
Matrix3D matrix3D = Helper3D.CameraRotationMatrix((Camera)this.cameraElement.ViewObject.PlatformSpecificObject);
if (this.mouseMovementMode == CameraOrbitToolBehavior.MovementMode.TranslateXY)
{
Vector3D vector3D1 = new Vector3D(matrix3D.M11, matrix3D.M21, matrix3D.M31);
Vector3D vector3D2 = new Vector3D(matrix3D.M12, matrix3D.M22, matrix3D.M32);
this.cameraInitialPosition += this.scale * (-mousePositionDelta.X * vector3D1 + mousePositionDelta.Y * vector3D2);
}
else
{
Vector3D vector3D1 = new Vector3D(matrix3D.M13, matrix3D.M23, matrix3D.M33);
this.cameraInitialPosition += this.scale * mousePositionDelta.Y * vector3D1;
Vector3D vector3D2 = RoundingHelper.RoundDirection(this.cameraInitialLookAt - this.cameraInitialPosition);
this.cameraElement.SetValue(ProjectionCameraElement.LookDirectionProperty, (object)vector3D2);
}
this.cameraInitialPosition = RoundingHelper.RoundPosition(this.cameraInitialPosition);
this.cameraElement.SetValue(ProjectionCameraElement.PositionProperty, (object)this.cameraInitialPosition);
}
}
protected override void ModifyValue(PropertyReference propertyReference, object valueToSet, SceneNode.Modification modification, int index)
{
bool flag = DesignTimeProperties.EulerAnglesProperty.Equals((object)propertyReference.LastStep);
if (!flag || !this.ViewModel.AnimationEditor.IsKeyFraming || this.ViewModel.IsForcingBaseValue)
{
base.ModifyValue(propertyReference, valueToSet, modification, index);
}
if (!flag)
{
return;
}
propertyReference = propertyReference.Subreference(0, propertyReference.Count - 2);
propertyReference = propertyReference.Append(Base3DElement.RotateTransform3DRotationProperty);
if (valueToSet is Vector3D)
{
Quaternion quaternion = Helper3D.QuaternionFromEulerAngles((Vector3D)valueToSet);
valueToSet = (object)new AxisAngleRotation3D(RoundingHelper.RoundDirection(quaternion.Axis), RoundingHelper.RoundAngle(quaternion.Angle));
}
base.ModifyValue(propertyReference, valueToSet, modification, index);
}