private void grdViewPort_Drop(object sender, DragEventArgs e)
{
try
{
if (e.Data.GetDataPresent(TabControlParts.DRAGDROP_FORMAT))
{
// Mousemove already moved it, just leave it committed
if (_draggingDropObject != null && _draggingDropObject.HasAddedToViewport) // just making sure
{
#region Store Part
DesignPart design = new DesignPart(_options)
{
Model = _draggingDropObject.Model,
Part2D = _draggingDropObject.Part2D, // could be null
Part3D = _draggingDropObject.Part3D
};
while (_parts.Count <= _currentLayerIndex)
{
_parts.Add(new List<DesignPart>());
}
_parts[_currentLayerIndex].Add(design);
#endregion
// Store in undo/redo
AddNewUndoRedoItem(new UndoRedoAddRemove[] { new UndoRedoAddRemove(true, design, _currentLayerIndex) });
}
// Let the source know. This is useful for cases when the tab control represents specific inventory (the part is either in inventory, or
// on this surface)
TabControlParts_DragItem dragItem = (TabControlParts_DragItem)e.Data.GetData(TabControlParts.DRAGDROP_FORMAT);
dragItem.Dropped();
_draggingDropObject = null;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), _msgboxCaption, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
private void tabCtrl_DragDropCancelled(object sender, TabControlParts_DragItem e)
{
try
{
// Since the tabcontrol started the dragdrop, it knows when the drop failed
// Get rid of the dragging part
if (_draggingDropObject != null && _draggingDropObject.HasAddedToViewport) // this will be null if they started dragging, but not over the 3D viewport
{
_viewport.Children.Remove(_draggingDropObject.Model);
}
_draggingDropObject = null;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), _msgboxCaption, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
private void grdViewPort_PreviewDragOver(object sender, DragEventArgs e)
{
try
{
if (!e.Data.GetDataPresent(TabControlParts.DRAGDROP_FORMAT))
{
e.Effects = DragDropEffects.None;
}
if (_draggingDropObject == null)
{
TabControlParts_DragItem dragItem = (TabControlParts_DragItem)e.Data.GetData(TabControlParts.DRAGDROP_FORMAT);
// Since they are dragging a new part, make sure nothing is selected
ClearSelectedParts();
// Reset the snap plane
//ChangeDragPlane(_isVertical);
ChangeDragHitShape();
ModelVisual3D model = new ModelVisual3D();
model.Content = dragItem.Part3D.Model;
_draggingDropObject = new DraggingDropPart()
{
Part2D = dragItem.Part2D,
Part3D = dragItem.Part3D,
DragItem = dragItem,
Model = model,
};
}
// Move the object to where the mouse is pointing
RayHitTestParameters clickRay = UtilityWPF.RayFromViewportPoint(_camera, _viewport, e.GetPosition(grdViewPort));
Point3D? dragPoint = _dragHitShape.CastRay(clickRay, clickRay, clickRay, _camera, _viewport);
if (dragPoint == null)
{
_draggingDropObject.Part3D.Position = new Point3D(0, 0, 0);
}
else
{
_draggingDropObject.Part3D.Position = dragPoint.Value;
}
// Since this model is in the active portion of the 3D surface, make sure the model is visible
if (!_draggingDropObject.HasAddedToViewport)
{
_viewport.Children.Add(_draggingDropObject.Model);
_draggingDropObject.HasAddedToViewport = true;
}
e.Handled = true;
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), _msgboxCaption, MessageBoxButton.OK, MessageBoxImage.Error);
}
}