private void grdViewPort_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
try
{
if (_isDraggingSelectionBox)
{
#region Selection Box
// Release the mouse capture and stop tracking it.
_isDraggingSelectionBox = false;
grdViewPort.ReleaseMouseCapture();
// Hide the drag selection box.
selectionBox.Visibility = Visibility.Collapsed;
if (Math1D.IsNearZero(selectionBox.Width) || Math1D.IsNearZero(selectionBox.Height))
{
// This is a miss, because the only way to start a selction box is to not click on anything
return;
}
Point mouseUpPos = e.GetPosition(grdViewPort);
// See if the part's centers are inside the rectangular solid. This way they are required to drag the box at least half way thru the part, but minor
// touching will be ignored
// Cast 4 rays
Point topLeft = new Point(Canvas.GetLeft(selectionBox), Canvas.GetTop(selectionBox));
//Point bottomRight = new Point(Canvas.GetRight(selectionBox), Canvas.GetBottom(selectionBox)); // this is just returning NANs for bottom and right
Point bottomRight = new Point(topLeft.X + selectionBox.Width, topLeft.Y + selectionBox.Height);
var rayTopLeft = UtilityWPF.RayFromViewportPoint(_camera, _viewport, topLeft);
var rayTopRight = UtilityWPF.RayFromViewportPoint(_camera, _viewport, new Point(bottomRight.X, topLeft.Y));
var rayBottomLeft = UtilityWPF.RayFromViewportPoint(_camera, _viewport, new Point(topLeft.X, bottomRight.Y));
var rayBottomRight = UtilityWPF.RayFromViewportPoint(_camera, _viewport, bottomRight);
List<ITriangle> planes = new List<ITriangle>(); // visualizing this in sketchup is a life saver
planes.Add(new Triangle(rayTopLeft.Origin, rayTopRight.Origin, rayTopLeft.Origin + rayTopLeft.Direction)); // top
planes.Add(new Triangle(rayTopRight.Origin, rayBottomRight.Origin, rayTopRight.Origin + rayTopRight.Direction)); // right
planes.Add(new Triangle(rayBottomRight.Origin, rayBottomLeft.Origin, rayBottomRight.Origin + rayBottomRight.Direction)); // bottom
planes.Add(new Triangle(rayBottomLeft.Origin, rayTopLeft.Origin, rayBottomLeft.Origin + rayBottomLeft.Direction)); // left
planes.Add(new Triangle(rayTopLeft.Origin, rayBottomRight.Origin, rayTopRight.Origin)); // selection box
// Figure out which layers to look at
IEnumerable<DesignPart> candidates = null;
if (_isAllLayers)
{
candidates = _parts.SelectMany(o => o);
}
else
{
candidates = _parts[_currentLayerIndex];
}
// Find all the parts inside this rectangular cone
List<DesignPart> hitParts = candidates.Where(o => Math3D.IsInside_Planes(planes, o.Part3D.Position)).ToList();
if (_isCtrlDown && _selectedParts != null)
{
#region Ctrl+Select
if (hitParts.Count > 0)
{
// Any of the hit parts that are currently in the selection should be removed. Any that aren't should be added
List<DesignPart> origSelectedParts = _selectedParts.GetParts().ToList();
foreach (DesignPart hitPart in hitParts)
{
if (origSelectedParts.Contains(hitPart))
{
_selectedParts.Remove(hitPart);
}
else
{
_selectedParts.Add(hitPart);
}
}
if (_selectedParts.Count == 0)
{
ClearSelectedParts();
}
}
#endregion
}
else
{
#region Standard Select
ClearSelectedParts(); // doesn't matter if there was a selection or not. A new one is needed
if (hitParts.Count > 0)
{
// Create a selection, and put the hit parts in it
_selectedParts = new SelectedParts(_viewport, _camera, _options);
_selectedParts.AddRange(hitParts);
}
#endregion
}
// Update guidelines
if (_selectedParts != null && chkShowGuideLines.IsChecked.Value)
{
ShowGuideLines(chkShowGuideLinesAllLayers.IsChecked.Value);
}
#endregion
}
else if (_isDraggingParts)
{
#region Finish moving selected parts
_isDraggingParts = false;
if (_selectedParts != null && _selectedParts.IsDraggingModifier)
{
_selectedParts.StopDraggingModifier();
}
if (_selectedParts != null && _isSelectionDragDirty)
{
// They moved the selection, so store it in the undo list
// Group the parts by layer
SortedList<int, List<DesignPart>> selectedPartsByLayer = GetPartsByLayer(_selectedParts.GetParts().ToList());
// Build the undo items
List<UndoRedoTransformChange> undoItems = new List<UndoRedoTransformChange>();
foreach (int layerIndex in selectedPartsByLayer.Keys)
{
undoItems.AddRange(selectedPartsByLayer[layerIndex].Select(o => new UndoRedoTransformChange(o.Part3D.Token, layerIndex)
{
Orientation = o.Part3D.Orientation,
Position = o.Part3D.Position,
Scale = o.Part3D.Scale
}));
}
AddNewUndoRedoItem(undoItems.ToArray());
}
#endregion
}
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), _msgboxCaption, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
private void grdViewPort_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
try
{
_isDraggingParts = false;
_isDraggingSelectionBox = false;
// Fire a ray at the mouse point
Point clickPoint = e.GetPosition(grdViewPort);
RayHitTestParameters clickRay;
List<MyHitTestResult> hits = UtilityWPF.CastRay(out clickRay, clickPoint, grdViewPort, _camera, _viewport, true, null);
// See if they clicked on an existing part
DesignPart clickedItem = null;
foreach (MyHitTestResult hit in hits.Where(o => o.ModelHit != null)) // skipping the dragshape hit
{
#region Detect model hit
if (_selectedParts != null && !_selectedParts.IsLocked)
{
if (_selectedParts.IsModifierHit(hit.ModelHit.VisualHit))
{
// This is a modifier of the selected item (scale arrow or rotate ring)
_selectedParts.StartDraggingModifier(hit.ModelHit.VisualHit, clickPoint); // if alt is pressed, I don't want to copy this, only when they drag the part around
_isDraggingParts = true;
return;
}
}
IEnumerable<DesignPart> candidates = null;
if (_isAllLayers)
{
candidates = _parts.SelectMany(o => o);
}
else
{
candidates = _parts[_currentLayerIndex];
}
var matches = candidates.Where(o => o.Model == hit.ModelHit.VisualHit);
if (matches.Count() == 1)
{
clickedItem = matches.First();
break;
}
#endregion
}
#region Update selected item
// Update the currently selected item
if (clickedItem != null && _selectedParts != null && _selectedParts.GetParts().Any(o => o == clickedItem))
{
if (_isCtrlDown)
{
#region Deselect from selected parts
// Ctrl clicking a selected part will deselect it
_selectedParts.Remove(clickedItem);
if (_selectedParts.Count == 0)
{
ClearSelectedParts();
}
#endregion
}
else
{
#region Update click point
// They clicked on the same part, just update the points
_dragMouseDownClickRay = clickRay;
_dragMouseDownCenterRay = new RayHitTestParameters(_selectedParts.Position, clickRay.Direction); //TODO: the ray through the center of the part really isn't parallel to the click ray (since the perspective camera sees in a cone)
#endregion
}
}
else if (clickedItem != null && _selectedParts != null && _isCtrlDown)
{
#region Add to current selection
_selectedParts.Add(clickedItem);
// Remember the click location in case they start dragging
_dragMouseDownClickRay = clickRay;
_dragMouseDownCenterRay = new RayHitTestParameters(_selectedParts.Position, clickRay.Direction); //TODO: the ray through the center of the part really isn't parallel to the click ray (since the perspective camera sees in a cone)
#endregion
}
else if (clickedItem == null && _isCtrlDown)
{
// They missed any parts, but are making a ctrl+selectionbox. Do nothing here and let mouseup take care of things
}
else
{
#region Changing selection, or unselecting everything
ClearSelectedParts();
if (clickedItem != null)
{
// Select this part
_selectedParts = new SelectedParts(_viewport, _camera, _options);
_selectedParts.Add(clickedItem);
// Remember where they clicked
_dragMouseDownClickRay = clickRay;
_dragMouseDownCenterRay = new RayHitTestParameters(_selectedParts.Position, clickRay.Direction); //TODO: the ray through the center of the part really isn't parallel to the click ray (since the perspective camera sees in a cone)
if (chkShowGuideLines.IsChecked.Value)
{
ShowGuideLines(chkShowGuideLinesAllLayers.IsChecked.Value);
}
}
#endregion
}
#endregion
if (_isAltDown && _selectedParts != null)
{
#region Clone part
List<UndoRedoAddRemove> undoItems = new List<UndoRedoAddRemove>();
// Make a copies of the selected parts
int partIndex = -1;
foreach (DesignPart clonedPart in _selectedParts.CloneParts())
{
partIndex++;
_viewport.Children.Add(clonedPart.Model);
if (clonedPart.GuideLines != null)
{
_viewport.Children.Add(clonedPart.GuideLines);
}
int layerIndex = _currentLayerIndex;
if (_isAllLayers)
{
List<DesignPart> origParts = _selectedParts.GetParts().ToList();
for (int cntr = 0; cntr < _parts.Count; cntr++)
{
if (_parts[cntr].Contains(origParts[partIndex]))
{
layerIndex = cntr;
break;
}
}
}
_parts[layerIndex].Add(clonedPart);
// Build undo item
undoItems.Add(new UndoRedoAddRemove(true, clonedPart, layerIndex));
}
// Store the undo items
if (undoItems.Count > 0) // parts that need to be unique can't be cloned
{
AddNewUndoRedoItem(undoItems.ToArray());
}
else
{
ShowErrorMsg("Can't copy this part");
}
#endregion
}
if ((_selectedParts == null) || (clickedItem == null && _isCtrlDown))
{
#region Start selection rectangle
if (!_isDraggingSelectionBox)
{
_isDraggingSelectionBox = true;
_selectionBoxMouseDownPos = e.GetPosition(grdViewPort);
grdViewPort.CaptureMouse();
// Initial placement of the drag selection box
Canvas.SetLeft(selectionBox, _selectionBoxMouseDownPos.X);
Canvas.SetTop(selectionBox, _selectionBoxMouseDownPos.Y);
selectionBox.Width = 0;
selectionBox.Height = 0;
// Make the drag selection box visible.
selectionBox.Visibility = Visibility.Visible;
}
#endregion
}
else if (clickedItem != null && _isCtrlDown)
{
// They just deselected a part. Don't drag, don't make a selection box
}
else
{
_isDraggingParts = true;
_mouseDownDragPos = _selectedParts.Position;
_mouseDownDragOrientation = _selectedParts.Orientation.ToUnit();
_isSelectionDragDirty = false;
}
// Make sure the drag shape is current
ChangeDragHitShape();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString(), _msgboxCaption, MessageBoxButton.OK, MessageBoxImage.Error);
}
}
private void SelectAllParts()
{
ClearSelectedParts(); // doesn't matter if there was a selection or not. A new one is needed
if (!_isAllLayers && (_parts[_currentLayerIndex].Count == 0 || !((LayerRow)pnlLayers.Children[_currentLayerIndex + 1]).IsLayerVisible))
{
// There are no parts in this layer
return;
}
// Create a selection, and put the hit parts in it
_selectedParts = new SelectedParts(_viewport, _camera, _options);
if (_isAllLayers)
{
_selectedParts.AddRange(_parts.SelectMany(o => o));
}
else
{
_selectedParts.AddRange(_parts[_currentLayerIndex]);
}
}
private void Paste()
{
if (_clipboard == null || _clipboard.Length == 0)
{
return;
}
ClearSelectedParts();
List<DesignPart> pastedParts = new List<DesignPart>();
List<UndoRedoAddRemove> undoItems = new List<UndoRedoAddRemove>();
// Paste the parts
foreach (DesignPart clipPart in _clipboard)
{
// Clone it
DesignPart part = clipPart.Clone();
// Add it
_viewport.Children.Add(part.Model);
_parts[_currentLayerIndex].Add(part);
// Remember this part
undoItems.Add(new UndoRedoAddRemove(true, part, _currentLayerIndex));
pastedParts.Add(part);
}
// Store the undo items
AddNewUndoRedoItem(undoItems.ToArray());
// Select the newly pasted parts
_selectedParts = new SelectedParts(_viewport, _camera, _options);
_selectedParts.AddRange(pastedParts);
if (chkShowGuideLines.IsChecked.Value)
{
ShowGuideLines(chkShowGuideLinesAllLayers.IsChecked.Value);
}
}
private void ClearSelectedParts()
{
HideGuideLines();
if (_selectedParts != null)
{
// Wipe out any selection visuals
_selectedParts.Clear();
}
_selectedParts = null;
}