private SceneElement GroupElements()
{
ReadOnlyCollection <SceneElement> selection = this.SceneViewModel.ElementSelectionSet.Selection;
if (selection[0] is BaseFrameworkElement)
{
return((SceneElement)null);
}
if (!(selection[0] is Base3DElement))
{
return((SceneElement)null);
}
SceneElement primarySelection = this.SceneViewModel.ElementSelectionSet.PrimarySelection;
this.SceneViewModel.ElementSelectionSet.Clear();
List <SceneElement> list = new List <SceneElement>((IEnumerable <SceneElement>)selection);
Base3DElement base3Delement1 = (Base3DElement)null;
int num = int.MaxValue;
Viewport3DElement viewport = ((Base3DElement)list[0]).Viewport;
foreach (Base3DElement base3Delement2 in list)
{
if (base3Delement2.Viewport == viewport)
{
int depthFromViewport3D = base3Delement2.DepthFromViewport3D;
if (depthFromViewport3D < num)
{
base3Delement1 = base3Delement2;
num = depthFromViewport3D;
}
}
}
SceneElement parentElement = base3Delement1.ParentElement;
Matrix3D matrix3D = Matrix3D.Identity;
if (parentElement is Base3DElement)
{
matrix3D = ((Base3DElement)parentElement).GetComputedTransformFromViewport3DToElement();
matrix3D.Invert();
}
Base3DElement parent = (Base3DElement)null;
if (list[0] is Model3DElement)
{
Model3DGroup model3Dgroup = new Model3DGroup();
Model3DCollection model3Dcollection = new Model3DCollection();
model3Dgroup.Children = model3Dcollection;
parent = (Base3DElement)this.SceneViewModel.CreateSceneNode((object)model3Dgroup);
}
else if (list[0] is Visual3DElement)
{
parent = (Base3DElement)this.SceneViewModel.CreateSceneNode((object)new ModelVisual3D());
}
SceneNodeIDHelper sceneNodeIdHelper = new SceneNodeIDHelper(this.SceneViewModel, (SceneNode)this.SceneViewModel.ActiveSceneInsertionPoint.SceneElement.StoryboardContainer);
string validElementId = sceneNodeIdHelper.GetValidElementID((SceneNode)parent, "group3D");
sceneNodeIdHelper.SetLocalName((SceneNode)parent, validElementId);
using (this.SceneViewModel.ForceBaseValue())
{
Matrix3D[] matrix3DArray = new Matrix3D[list.Count];
for (int index = 0; index < list.Count; ++index)
{
matrix3DArray[index] = ((Base3DElement)list[index]).GetComputedTransformFromViewport3DToElement();
}
foreach (Base3DElement base3Delement2 in list)
{
if (base3Delement2 != primarySelection)
{
base3Delement2.Remove();
}
}
int insertAt = primarySelection.GetCollectionContainer().IndexOf((SceneNode)primarySelection);
primarySelection.Remove();
if (parentElement is Viewport3DElement)
{
GroupCommandHelpers.InsertElement(parentElement, (SceneNode)parent, insertAt);
}
else
{
GroupCommandHelpers.InsertElement(this.SceneViewModel, (Base3DElement)parentElement, (SceneNode)parent, new int?(insertAt));
}
for (int index = 0; index < list.Count; ++index)
{
GroupCommandHelpers.InsertElement(this.SceneViewModel, parent, (SceneNode)list[index], new int?());
((Base3DElement)list[index]).Transform = (Transform3D) new CanonicalTransform3D(matrix3DArray[index] * matrix3D);
}
}
return((SceneElement)parent);
}
private static SceneElement PasteElement(SceneViewModel viewModel, SceneElement element, List <PasteCommand.DelayedElementTranslationInfo> elementsToTranslateLater, ISceneInsertionPoint insertionPoint)
{
SceneNodeIDHelper sceneNodeIdHelper = new SceneNodeIDHelper(viewModel, (SceneNode)insertionPoint.SceneNode.StoryboardContainer);
SceneElement element1 = (SceneElement)null;
using (viewModel.ForceBaseValue())
{
PasteCommand.StripStoryboardsAndTriggers(element);
PasteCommand.StripExtraNamespaces(element);
BaseFrameworkElement frameworkElement = element as BaseFrameworkElement;
if (frameworkElement != null || element is DataGridColumnNode)
{
if (!(insertionPoint.SceneElement is Viewport3DElement) && !(insertionPoint.SceneElement is Base3DElement))
{
if (insertionPoint.CanInsert((ITypeId)element.Type))
{
if (!PlatformTypes.FrameworkTemplate.IsAssignableFrom((ITypeId)insertionPoint.SceneElement.Type) && (!PlatformTypes.UserControl.Equals((object)insertionPoint.SceneElement.Type) || insertionPoint.SceneElement.DocumentNode.DocumentRoot.RootNode != insertionPoint.SceneElement.DocumentNode))
{
if (element.Name != null)
{
string validCopiedElementId = sceneNodeIdHelper.GetValidCopiedElementID((SceneNode)element, element.Name);
sceneNodeIdHelper.SetLocalName((SceneNode)element, validCopiedElementId);
}
sceneNodeIdHelper.FixNameConflicts((SceneNode)element);
}
if (viewModel.DesignerContext.PrototypingService != null)
{
viewModel.DesignerContext.PrototypingService.ProcessElementBeforeInsertion(insertionPoint, element);
}
insertionPoint.Insert((SceneNode)element);
if (element.GetLocalValue(DesignTimeProperties.LayoutRectProperty) != null && frameworkElement != null)
{
elementsToTranslateLater.Add(new PasteCommand.DelayedElementTranslationInfo(frameworkElement));
}
element1 = element;
}
}
else if (element.TargetType == typeof(Image))
{
GeometryModel3DElement geometryModel3Delement = GeometryCreationHelper3D.ConvertImageTo3D(viewModel, frameworkElement, element.Name);
IChildContainer3D childContainer3D = insertionPoint.SceneElement as IChildContainer3D;
if (childContainer3D != null)
{
childContainer3D.AddChild(viewModel, (Base3DElement)geometryModel3Delement);
element1 = (SceneElement)geometryModel3Delement;
}
}
}
else
{
Base3DElement child;
if ((child = element as Base3DElement) != null)
{
if (child.Name != null)
{
string validCopiedElementId = sceneNodeIdHelper.GetValidCopiedElementID((SceneNode)child, child.Name);
sceneNodeIdHelper.SetLocalName((SceneNode)child, validCopiedElementId);
}
DependencyPropertyReferenceStep propertyReferenceStep = insertionPoint.Property as DependencyPropertyReferenceStep;
if (propertyReferenceStep != null && propertyReferenceStep.DependencyProperty == ModelVisual3D.ContentProperty)
{
Model3DElement model3Delement = BaseElement3DCoercionHelper.CoerceToModel3D(viewModel, (SceneElement)child);
if (model3Delement != null)
{
insertionPoint.Insert((SceneNode)model3Delement);
element1 = (SceneElement)model3Delement;
}
}
else
{
IChildContainer3D childContainer3D = insertionPoint.SceneElement as IChildContainer3D;
if (childContainer3D != null)
{
element1 = childContainer3D.AddChild(viewModel, child);
}
}
}
}
if (element1 != null)
{
if (!(viewModel.ActiveEditingContainer is FrameworkTemplateElement))
{
PasteCommand.StripTemplateBindings(element1);
}
}
}
return(element1);
}