OpenSimulator GForge > Projects > Xenki Viewer > SVN

Diff of /trunk/DefaultRenderer/CameraControl.cs

-revision 23, Tue Sep  9 10:53:57 2008 UTC
+revision 24, Wed Sep 10 09:00:17 2008 UTC
 Line 46
          private PerspectiveCamera _camera;
          private Point3D _cameraLookPoint;
          private RotateTransform3D _rotationTransform = new RotateTransform3D();
-         //ModelVisual3D clickedVisual;
          ModelVisual3D visul3d;
          //rotate and pan object clicked
          private TranslateTransform3D _clickedTranslate = new TranslateTransform3D();
-         private TranslateTransform3D _clickedTranslateOriginal;// = new TranslateTransform3D();
          private RotateTransform3D _clickedRotate = new RotateTransform3D();
          private AxisAngleRotation3D _clickedAxisAngleRotate = new AxisAngleRotation3D();
          Point3D _clickedCenterPosition;
-Line 68
+Line 66
              _transform = new Transform3DGroup();
             // _transform.Children.Add(_translate);
              _transform.Children.Add(_rotationTransform);
-             // _transform.Children.Add(_scale);
              _cameraLookDirection = _camera.LookDirection;
-Line 83
+Line 80
              get { return _transform; }
          }
+         [System.Runtime.InteropServices.DllImportAttribute("user32.dll", EntryPoint = "SetCursorPos")]
+         [return: System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.Bool)]
+         public static extern bool SetCursorPos(int X, int Y);
          #region Event Handling
          /// <summary>
-Line 101
+Line 103
                      _eventSource.MouseMove -= this.OnMouseMove;
                      _eventSource.MouseLeftButtonDown -= _eventSource_MouseLeftButtonDown;
                      _eventSource.MouseRightButtonDown -= _eventSource_MouseRightButtonDown;
                  }
                  _eventSource = value;
                  _eventSource.MouseWheel += _eventSource_MouseWheel;
-Line 111
+Line 110
                  _eventSource.MouseRightButtonDown += _eventSource_MouseRightButtonDown;
                      _eventSource.MouseUp += this.OnMouseUp;
                  _eventSource.MouseMove += this.OnMouseMove;
              }
          }
          void _eventSource_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
          {
-             Mouse.Capture(EventSource, CaptureMode.Element);
+             Mouse.Capture(_eventSource, CaptureMode.Element);
-             Point pclick = e.GetPosition(EventSource);
+             Point pclick = e.GetPosition(_eventSource);
              HitTestResult hitresult = VisualTreeHelper.HitTest(EventSource, pclick);
              RayMeshGeometry3DHitTestResult result3d = hitresult as RayMeshGeometry3DHitTestResult;
              if (result3d == null)
-Line 139
+Line 135
                  {
                      if (tran is RotateTransform3D)
                      {
-                         _clickedRotate = new RotateTransform3D();
                          _clickedRotate = tran as RotateTransform3D;
                          if (_clickedRotate != null)
                          {
-Line 153
+Line 149
              }
              else
                  return;
-             //for pan the object
-             //_clickedTranslateOriginal = _clickedTranslate.Clone();
              //for ALT + MOUSE + ROTATE
-             Petzold.Media3D.LineRange line;
+             VisualTreeHelper.HitTest(_eventSource, null, HitTestCallback, new PointHitTestParameters(pclick));
-             Petzold.Media3D.ViewportInfo.Point2DtoPoint3D(_eventSource as Viewport3D, pclick, out line);
-             _cameraLookPoint = line.PointFromY(visul3d.Content.Bounds.Y);
              _rotationTransform.CenterX = _cameraLookPoint.X;
              _rotationTransform.CenterY = _cameraLookPoint.Y;
-Line 174
+Line 166
              e.Handled = true;
          }
+         Point originalMouseClickPos = new Point();
          void _eventSource_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
          {
              Mouse.Capture(EventSource, CaptureMode.Element);
              Point pclick = e.GetPosition(EventSource);
+             originalMouseClickPos = _eventSource.PointToScreen(pclick);
              HitTestResult hitresult = VisualTreeHelper.HitTest(EventSource, pclick);
              RayMeshGeometry3DHitTestResult result3d = hitresult as RayMeshGeometry3DHitTestResult;
              if (result3d == null)
-Line 189
+Line 183
              if (visul3d == null)
                  return;
              _clickedGroup = visul3d.Transform as Transform3DGroup;
              if (_clickedGroup != null)
              {
-Line 198
+Line 191
                  {
                      if (tran is RotateTransform3D)
                      {
-                         // _clickedRotate = new RotateTransform3D();
                          _clickedRotate = tran as RotateTransform3D;
                          if (_clickedRotate != null)
                          {
-Line 218
+Line 210
              else
                  return;
-             //for pan the object
-             //_clickedTranslateOriginal = _clickedTranslate.Clone();
              //for ALT + MOUSE + ROTATE
-             Petzold.Media3D.LineRange line;
+             VisualTreeHelper.HitTest(_eventSource, null, HitTestCallback, new PointHitTestParameters(pclick));
-             Petzold.Media3D.ViewportInfo.Point2DtoPoint3D(_eventSource as Viewport3D, pclick, out line);
-             _cameraLookPoint = line.PointFromY(visul3d.Content.Bounds.Y);
-             //for test
-             //VisualTreeHelper.HitTest(_eventSource, null, HitTestCallback, new PointHitTestParameters(pclick));
-              //end of test
              _rotationTransform.CenterX = _cameraLookPoint.X;
              _rotationTransform.CenterY = _cameraLookPoint.Y;
-Line 259
+Line 241
          {
              Mouse.Capture(EventSource, CaptureMode.None);
              isTracking = false;
+             //set the mouse to the original position when clicked the object.
+             SetCursorPos((int)originalMouseClickPos.X, (int)originalMouseClickPos.Y);
              _eventSource.ReleaseMouseCapture();
              _eventSource.Cursor = Cursors.Arrow;
-Line 287
+Line 271
              }
              else if (e.RightButton == MouseButtonState.Pressed && Keyboard.IsKeyDown(Key.A))
              {
                  if (isTracking)
                  {
                      _eventSource.Cursor = Cursors.None;
-Line 318
+Line 301
                  LookAround(currentPosition);
              }
              _previousPosition2D = currentPosition;
          }
          private void LookAround(Point currentPosition)
-Line 359
+Line 344
          void _eventSource_MouseWheel(object sender, MouseWheelEventArgs e)
          {
-             Point3D PreCameraPos = _camera.Position;
+             double scale = -e.Delta / 1200.000;
-             double scale = e.Delta / 1200.000;
-             _camera.Position = new Point3D(_camera.Position.X + scale * _cameraLookDirection.X,
-                _camera.Position.Y + scale * _cameraLookDirection.Y,
-                _camera.Position.Z + scale * _cameraLookDirection.Z);
+             AdjustCameraPosition(_camera, _cameraLookDirection, scale);
-             double distance = Point3D.Subtract(_cameraLookPoint, _camera.Position).Length;
-             if (distance > 524 || distance <= 5)
-             {
-                 _camera.Position = PreCameraPos;
-             }
-             _camera.LookDirection = Point3D.Subtract(_cameraLookPoint, _camera.Position);
          }
          private void RotateObject(Point currentPosition)
-Line 432
+Line 403
              scalex = Math.Abs( scalex);
              Vector3D vector3D = GetTranslationVector3D(visul3d, _previousPosition2D, currentPosition);
              _clickedTranslate.OffsetX += scalex * vector3D.X;// _clickedTranslateOriginal.OffsetX + vector3D.X;
-Line 474
+Line 444
          private void Focus(Point currentPosition)
          {
              //zoom
              double yDelta = currentPosition.Y - _previousPosition2D.Y;
-             double scale = yDelta / 80.00000;
+             double scale = yDelta / 100.000000;
+             AdjustCameraPosition(_camera,_cameraLookDirection,scale);
-             Point3D cameraPos = new Point3D(_camera.Position.X - scale * _cameraLookDirection.X,
-                 _camera.Position.Y - scale * _cameraLookDirection.Y,
-                 _camera.Position.Z - scale * _cameraLookDirection.Z);
-             //Maybe this part need replaced by collision detection method
-             double distance = Point3D.Subtract(_cameraLookPoint, cameraPos).Length;
-             if (distance > 524 || distance <= 1.000000)
-             {
-             }
-             else
-                 _camera.Position = cameraPos;
              //rotate the camera
              double axisAngle = currentPosition.X - _previousPosition2D.X;
-             if (axisAngle > 360 || axisAngle < -360)
-                 return;
-             //if (_rotation.Angle - axisAngle <= -360)
-             //    _rotation.Angle = 0;
              _rotation.Axis = new Vector3D(0, 0, 1);
              _rotation.Angle -= axisAngle;
              _camera.LookDirection = Point3D.Subtract(_cameraLookPoint, _camera.Position);
+         }
-             //_translate.OffsetX -= scale * _cameraLookDirection.X;// _camera.LookDirection.X;
+         private void AdjustCameraPosition(PerspectiveCamera camera,Vector3D lookDirection, double scale )
-             //_translate.OffsetY -= scale * _cameraLookDirection.Y;//_camera.LookDirection.Y;
+         {
-             //_translate.OffsetZ -= scale * _cameraLookDirection.Z;//_camera.LookDirection.Z;
+             Point3D cameraPos = new Point3D(camera.Position.X - scale * lookDirection.X,
+                 camera.Position.Y - scale * lookDirection.Y,
+                 camera.Position.Z - scale * lookDirection.Z);
+             //too fast
+             if (Point3D.Subtract(cameraPos, camera.Position).Length > 1.000000000)
+                 cameraPos = new Point3D(camera.Position.X - scale / 10 * lookDirection.X,
+                  camera.Position.Y - scale / 10 * lookDirection.Y,
+                  camera.Position.Z - scale / 10 * lookDirection.Z);
-         }
+             double distance = Point3D.Subtract(_cameraLookPoint, cameraPos).Length;
+             if (distance > 524 || distance <= 1.000000)
+             {
+             }
+             else
+                 camera.Position = cameraPos;
+         }
+         //get the clicked 3d position
          public HitTestResultBehavior HitTestCallback(HitTestResult result)
          {
              if (result.VisualHit != null)
-Line 519
+Line 487
                  {
                      RayMeshGeometry3DHitTestResult t = r as RayMeshGeometry3DHitTestResult;
                     _cameraLookPoint = t.PointHit;
+                    return HitTestResultBehavior.Stop;
                  }
              }
              return HitTestResultBehavior.Continue;

 Legend:



Removed from v.23
 


changed lines


 
Added in v.24
 Legend:



Removed from v.23
 


changed lines


 
Added in v.24
-Removed from v.23
+Added in v.24

	ViewVC Help
Powered by ViewVC 1.0.0

MyGforge Home

Xenki Viewer

Diff of /trunk/DefaultRenderer/CameraControl.cs