private void Viewport_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
Point mousePos = e.GetPosition(_Viewport);
PointHitTestParameters pointparams = new PointHitTestParameters(mousePos);
_PieceRightClicked = null;
VisualTreeHelper.HitTest(_Viewport, null, HTResult, pointparams);
_PieceRightClicked = _PieceHit;
}
private void Viewport_MouseRightButtonUp(object sender, MouseButtonEventArgs e)
{
if (_PieceRightClicked != null)
{
Point mousePos = e.GetPosition(_Viewport);
PointHitTestParameters pointparams = new PointHitTestParameters(mousePos);
VisualTreeHelper.HitTest(_Viewport, null, HTResult, pointparams);
if (_PieceRightClicked.Equals(_PieceHit))
OnRightClick(_PieceRightClicked);
_PieceRightClicked = null;
}
}
/// <summary>
/// Determines which model was hit and stores the result in the _PieceHit field.
/// </summary>
/// <param name="raw"></param>
/// <returns></returns>
private HitTestResultBehavior HTResult(System.Windows.Media.HitTestResult raw)
{
RayMeshGeometry3DHitTestResult rayResult = raw as RayMeshGeometry3DHitTestResult;
if (rayResult != null && rayResult.DistanceToRayOrigin < _RayDistance)
{
if (rayResult.ModelHit is GeometryModel3D)
{
GeometryModel3D hitgeo = rayResult.ModelHit as GeometryModel3D;
foreach (BaseGraphPiece piece in _Pieces)
{
if (hitgeo.Equals(piece.Geometry))
{
_RayDistance = rayResult.DistanceToRayOrigin;
_PieceHit = piece;
break;
}
}
}
}
return HitTestResultBehavior.Continue;
}
private void Viewport_MouseMove(object obj, MouseEventArgs e)
{
Point mousePos = e.GetPosition(_Viewport);
PointHitTestParameters pointparams = new PointHitTestParameters(mousePos);
_RayDistance = double.MaxValue;
_PieceHit = null;
VisualTreeHelper.HitTest(_Viewport, null, HTResult, pointparams);
if (_PieceHit != null)
OnMouseOver(_PieceHit);
}
/// <summary>
/// When a user right-clicks on a piece, this method is called. Typically it fires the
/// <see cref="RightClicked"/> event. Override this to change this default behavior.
/// </summary>
/// <param name="piece"></param>
protected virtual void OnRightClick(BaseGraphPiece piece)
{
if (RightClicked != null)
RightClicked(this, piece.Key, piece.Value);
}
/// <summary>
/// When a user mouses over a piece, this method is called. Typically it fires the
/// <see cref="MouseOver"/> event. Override this to change this default behavior.
/// </summary>
/// <param name="piece"></param>
protected virtual void OnMouseOver(BaseGraphPiece piece)
{
if (MouseOver != null)
MouseOver(this, piece.Key, piece.Value);
}
/// <summary>
/// Handles the right click.
/// </summary>
/// <param name="piece"></param>
protected override void OnRightClick(BaseGraphPiece piece)
{
base.OnRightClick(piece);
HandleAction(_RightClickAction, piece as PiePiece);
}
/// <summary>
/// Handles the mouse over.
/// </summary>
/// <param name="piece"></param>
protected override void OnMouseOver(BaseGraphPiece piece)
{
base.OnMouseOver(piece);
HandleAction(_MouseOverAction, piece as PiePiece);
}
/// <summary>
/// Handles the left click.
/// </summary>
/// <param name="piece"></param>
protected override void OnLeftClick(BaseGraphPiece piece)
{
base.OnLeftClick(piece);
HandleAction(_LeftClickAction, piece as Bar);
}
