private void EventSource_MouseDown(object sender, MouseEventArgs e)
{
// By capturing the mouse, mouse events will still come in even when they are moving the mouse
// outside the element/form
Mouse.Capture(_eventSource, CaptureMode.SubTree); // I had a case where I used the grid as the event source. If they clicked one of the 3D objects, the scene would jerk. But by saying subtree, I still get the event
_previousPosition2D = e.GetPosition(_eventSource);
_previousPosition3D = TrackballTransform.ProjectToTrackball(_eventSource.ActualWidth, _eventSource.ActualHeight, _previousPosition2D);
#region Detect Autoscroll
if (e.LeftButton == MouseButtonState.Pressed)
{
}
else if (e.MiddleButton == MouseButtonState.Pressed)
{
if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
{
}
else if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
{
}
else
{
_autoscroll.StartAutoScroll(_previousPosition2D, UtilityWPF.TransformToScreen(_previousPosition2D, _eventSource));
}
}
#endregion
}
private void EventSource_MouseMove(object sender, MouseEventArgs e)
{
Point currentPosition = e.GetPosition(_eventSource);
// avoid any zero axis conditions
if (currentPosition == _previousPosition2D)
{
return;
}
_autoscroll.MouseMove(currentPosition);
Vector3D currentPosition3D = TrackballTransform.ProjectToTrackball(_eventSource.ActualWidth, _eventSource.ActualHeight, currentPosition);
if (e.LeftButton == MouseButtonState.Pressed)
{
SlideCamera(currentPosition);
}
else if (e.MiddleButton == MouseButtonState.Pressed)
{
if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
{
RotateCameraAroundLookDir(currentPosition, currentPosition3D);
}
else if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
{
ZoomCamera(currentPosition);
}
else
{
// Nothing to do here, this is taken care of in the mouse down and mouse up
//AutoscrollCamera(currentPosition);
}
}
else if (e.RightButton == MouseButtonState.Pressed)
{
if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
{
RotateCamera(currentPosition);
}
else
{
OrbitCamera(currentPosition, currentPosition3D);
}
}
_previousPosition2D = currentPosition;
_previousPosition3D = currentPosition3D;
}
private void radCamera_Checked(object sender, RoutedEventArgs e)
{
if (_camera1 == null || _camera2 == null)
{
// This event is getting invoked from InitializeComponent
return;
}
#region Disable Controls
chkIsActive4.IsEnabled = false;
button1.IsEnabled = false;
#endregion
#region Dispose Current Trackballs
if (_trackball2 != null)
{
_trackball2.EventSource = null;
_trackball2 = null;
}
if (_trackball3 != null)
{
_trackball3.EventSource = null;
_trackball3 = null;
}
if (_trackball4 != null)
{
_trackball4.EventSource = null;
_trackball4 = null;
}
#endregion
if (radCamera1.IsChecked.Value)
{
#region Camera 1
_camera1.Position = new Point3D(0, 0, 25);
_camera1.LookDirection = new Vector3D(0, 0, -10);
_camera1.UpDirection = new Vector3D(0, 1, 0);
_camera1.FieldOfView = 45;
_viewport.Camera = _camera1;
#endregion
}
else if (radCamera2.IsChecked.Value)
{
#region Camera 2
//_camera2.Position = new Point3D(0, 0, 25);
//_camera2.LookDirection = new Vector3D(0, 0, -10);
//_camera2.UpDirection = new Vector3D(0, 1, 0);
//_camera2.FieldOfView = 45;
_camera2.Position = new Point3D(0, 25, 0); // this alternate location is to test placing the camera somewhere other than the z axis
_camera2.LookDirection = new Vector3D(0, -1, 0);
_camera2.UpDirection = new Vector3D(0, 0, -1);
_camera2.FieldOfView = 45;
_trackball2 = new TrackballTransform(_camera2);
_trackball2.EventSource = grdViewPort;
_camera2.Transform = _trackball2.Transform;
_viewport.Camera = _camera2;
#endregion
}
else if (radCamera3.IsChecked.Value)
{
#region Camera 3
//_camera3.Position = new Point3D(0, 0, 25);
//_camera3.LookDirection = new Vector3D(0, 0, -10);
//_camera3.UpDirection = new Vector3D(0, 1, 0);
//_camera3.FieldOfView = 45;
_camera3.Position = new Point3D(0, 25, 0); // this alternate location is to test placing the camera somewhere other than the z axis
_camera3.LookDirection = new Vector3D(0, -1, 0);
_camera3.UpDirection = new Vector3D(0, 0, -1);
_camera3.FieldOfView = 45;
_trackball3 = new TrackBallRoam_local(_camera3);
_trackball3.EventSource = grdViewPort;
_viewport.Camera = _camera3;
#endregion
}
else if (radCamera4.IsChecked.Value)
{
#region Camera 4
chkIsActive4.IsEnabled = true;
button1.IsEnabled = true;
_camera4.Position = new Point3D(0, 0, 25);
_camera4.LookDirection = new Vector3D(0, 0, -10);
_camera4.UpDirection = new Vector3D(0, 1, 0);
_camera4.FieldOfView = 45;
//_camera4.Position = new Point3D(0, 25, 0); // this alternate location is to test placing the camera somewhere other than the z axis
//_camera4.LookDirection = new Vector3D(0, -1, 0);
//_camera4.UpDirection = new Vector3D(0, 0, -1);
//_camera4.FieldOfView = 45;
_trackball4 = new TrackBallRoam(_camera4);
_trackball4.EventSource = grdViewPort;
_trackball4.AllowZoomOnMouseWheel = true;
_trackball4.Mappings.AddRange(TrackBallMapping.GetPrebuilt(TrackBallMapping.PrebuiltMapping.MouseComplete));
_trackball4.IsActive = chkIsActive4.IsChecked.Value;
_viewport.Camera = _camera4;
#endregion
}
else
{
MessageBox.Show("Unknown camera selected", this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
_viewport.Camera = null;
}
}
private void radCamera_Checked(object sender, RoutedEventArgs e)
{
if (_camera1 == null || _camera2 == null)
{
// This event is getting invoked from InitializeComponent
return;
}
#region Disable Controls
chkIsActive4.IsEnabled = false;
button1.IsEnabled = false;
#endregion
#region Dispose Current Trackballs
if (_trackball2 != null)
{
_trackball2.EventSource = null;
_trackball2 = null;
}
if (_trackball3 != null)
{
_trackball3.EventSource = null;
_trackball3 = null;
}
if (_trackball4 != null)
{
_trackball4.EventSource = null;
_trackball4 = null;
}
#endregion
if (radCamera1.IsChecked.Value)
{
#region Camera 1
_camera1.Position = new Point3D(0, 0, 25);
_camera1.LookDirection = new Vector3D(0, 0, -10);
_camera1.UpDirection = new Vector3D(0, 1, 0);
_camera1.FieldOfView = 45;
_viewport.Camera = _camera1;
#endregion
}
else if (radCamera2.IsChecked.Value)
{
#region Camera 2
//_camera2.Position = new Point3D(0, 0, 25);
//_camera2.LookDirection = new Vector3D(0, 0, -10);
//_camera2.UpDirection = new Vector3D(0, 1, 0);
//_camera2.FieldOfView = 45;
_camera2.Position = new Point3D(0, 25, 0); // this alternate location is to test placing the camera somewhere other than the z axis
_camera2.LookDirection = new Vector3D(0, -1, 0);
_camera2.UpDirection = new Vector3D(0, 0, -1);
_camera2.FieldOfView = 45;
_trackball2 = new TrackballTransform(_camera2);
_trackball2.EventSource = grdViewPort;
_camera2.Transform = _trackball2.Transform;
_viewport.Camera = _camera2;
#endregion
}
else if (radCamera3.IsChecked.Value)
{
#region Camera 3
//_camera3.Position = new Point3D(0, 0, 25);
//_camera3.LookDirection = new Vector3D(0, 0, -10);
//_camera3.UpDirection = new Vector3D(0, 1, 0);
//_camera3.FieldOfView = 45;
_camera3.Position = new Point3D(0, 25, 0); // this alternate location is to test placing the camera somewhere other than the z axis
_camera3.LookDirection = new Vector3D(0, -1, 0);
_camera3.UpDirection = new Vector3D(0, 0, -1);
_camera3.FieldOfView = 45;
_trackball3 = new TrackBallRoam_local(_camera3);
_trackball3.EventSource = grdViewPort;
_viewport.Camera = _camera3;
#endregion
}
else if (radCamera4.IsChecked.Value)
{
#region Camera 4
chkIsActive4.IsEnabled = true;
button1.IsEnabled = true;
_camera4.Position = new Point3D(0, 0, 25);
_camera4.LookDirection = new Vector3D(0, 0, -10);
_camera4.UpDirection = new Vector3D(0, 1, 0);
_camera4.FieldOfView = 45;
//_camera4.Position = new Point3D(0, 25, 0); // this alternate location is to test placing the camera somewhere other than the z axis
//_camera4.LookDirection = new Vector3D(0, -1, 0);
//_camera4.UpDirection = new Vector3D(0, 0, -1);
//_camera4.FieldOfView = 45;
_trackball4 = new TrackBallRoam(_camera4);
_trackball4.EventSource = grdViewPort;
_trackball4.AllowZoomOnMouseWheel = true;
_trackball4.Mappings.AddRange(TrackBallMapping.GetPrebuilt(TrackBallMapping.PrebuiltMapping.MouseComplete));
_trackball4.IsActive = chkIsActive4.IsChecked.Value;
_viewport.Camera = _camera4;
#endregion
}
else
{
MessageBox.Show("Unknown camera selected", this.Title, MessageBoxButton.OK, MessageBoxImage.Error);
_viewport.Camera = null;
}
}
